Academic literature on the topic 'Hydrodistillation'
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Journal articles on the topic "Hydrodistillation"
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Tran, Thien Hien, Duy Chinh Nguyen, Thuong Nhan Nguyen Phu, Van Thi Thanh Ho, Dai Viet Nguyen Vo, Long Giang Bach, and Trinh Duy Nguyen. "Research on Lemongrass Oil Extraction Technology (Hydrodistillation, Microwave-Assisted Hydrodistillation)." Indonesian Journal of Chemistry 19, no. 4 (August 13, 2019): 1000. http://dx.doi.org/10.22146/ijc.40883.
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Microwave-assisted hydro-distillation (MAHD) is preferred to traditional extraction methods due to shorter extraction time, the inability of volatile components to be damaged or decomposed which in turn improve the efficiency and quality of essential oils. In this research, we investigated the parameters that affect the extraction of lemongrass oil process by MAHD method and compare with those of hydro-distillation (HD) method. Four parameters were identified which are: raw material size, raw material to water ratio, extraction time and microwave power. The results show that the optimum condition for determining the lemongrass essential oil content is 20 mm in the 90 min extraction time with a microwave power of 450 W at raw material to water ratio of 1:3 (g/mL). When compared to the HD method, we found that the yield lemongrass oil of MAHD method is 0.35% on 90 min and the yield of HD method is 0.2% on 360 min. The quality of oil samples at different extraction method was evaluated by determining their chemical constituents through GC-MS. The highest identified component is Citral with 93.28% for MAHD, while the HD was 83.85%. Therefore, MAHD method is highly efficient and shorten the time needed for the extraction of essential oils.
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Kosar, Müberra, Zeynep Tunalier, Temel Özek, Mine Kürkcüoglu, and K. Hüsnü Can Baser. "A Simple Method to Obtain Essential Oils from Salvia triloba L. and Laurus nobilis L. by Using Microwave-assisted Hydrodistillation." Zeitschrift für Naturforschung C 60, no. 5-6 (June 1, 2005): 501–4. http://dx.doi.org/10.1515/znc-2005-5-620.
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A microwave-assisted hydrodistillation protocol was modified to extract essential oils from leaves of Salvia triloba L. and Laurus nobilis L. The essential oils of these plants are generally obtained by hydrodistillation or steam distillation. The volatile compounds obtained by microwave-assisted hydrodistillation and hydrodistillation methods were analyzed by GC and GC/MS. Both distillation methods and analytical results were compared. 1,8-Cineole (46.8-54.2%) was the main component in the leaf oils of both samples. Although the distillation was accomplished in a shorter time, oil yields and 1,8-cineole contents were slightly higher in the microwave- assisted hydrodistillation compared to usual hydrodistillation. Microwave-assisted hydrodistillation appears to be an effective method for the production of essential oils.
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Wainer, Jessie, Adrianne Thomas, Tania Chimhau, and Kevin Harding. "Extraction of Essential Oils from Lavandula × intermedia ‘Margaret Roberts’ Using Steam Distillation, Hydrodistillation, and Cellulase-Assisted Hydrodistillation: Experimentation and Cost Analysis." Plants 11, no. 24 (December 12, 2022): 3479. http://dx.doi.org/10.3390/plants11243479.
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Lavender oil is an important essential oil with many applications. The purpose of this study was to compare different methods of essential oil extraction to determine which method would be the most effective and profitable for commercial-scale production from Lavandula x intermedia (‘Margret Roberts’) flowers and leaves. The lavender from this variety flowers year-round, providing an extended production season compared to some other lavender varieties. Steam distillation, hydrodistillation, and cellulase-assisted hydrodistillation were used to extract oil. The average extraction times for steam distillation, hydrodistillation, and cellulase-assisted hydrodistillation were 57-, 51-, and 49 min, respectively, and the average energy consumption was 15.0-, 13.4-, and 30.8 kJ/g, respectively. Cellulase-assisted hydrodistillation produced the best quality oils, with a lower camphor content and a sweeter, more pleasant smell, while steam-distilled oils had the highest camphor content, as well as a more plant-like smell. Factors affecting scale-up (surface area of cut plants, equipment loading times, energy efficiencies, safety, mixing) have been discussed, while a basic cost analysis of theoretical large-scale processes showed that hydrodistillation and cellulase-assisted hydrodistillation would be the most and least profitable methods, respectively. Overall, hydrodistillation is recommended as the best method for commercial lavender oil production.
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Tyśkiewicz, Katarzyna, Roman Gieysztor, Marcin Konkol, Jan Szałas, and Edward Rój. "Essential Oils from Humulus Lupulus scCO2 Extract by Hydrodistillation and Microwave-Assisted Hydrodistillation." Molecules 23, no. 11 (November 3, 2018): 2866. http://dx.doi.org/10.3390/molecules23112866.
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Two different extraction methods were used for a comparative study of essential oils obtained from the Humulus lupulus scCO2 (sc-supercritical) extract: microwave-assisted hydrodistillation (MAHD) and conventional hydrodistillation (HD). As a result, the best conditions for the maximum essential oil production were determined for the MAHD method at 335 W microwave power for 30 min at water to raw material ratio of 8:3. The obtained essential oils were enriched in β-myrcene in the amount of 74.13%–89.32% (wt%). Moreover, the first application for determination of the above-mentioned volatile compounds by supercritical fluid chromatography (SFC) with photo-diode array detection (PDA) is presented, which in comparison with gas chromatography coupled with mass spectrometry (GC-MS/MS) resulted in similar values for β-myrcene and α-humulene in obtained samples within less than 1 min.
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Rassem, Hesham H. A., Abdurahman H. Nour, Gomaa A. M. Ali, Najat Masood, Amal H. Al-Bagawi, Tahani Y. A. Alanazi, Sami Magam, and Mohammed A. Assiri. "Essential Oil from Hibiscus Flowers through Advanced Microwave-Assisted Hydrodistillation and Conventional Hydrodistillation." Journal of Chemistry 2022 (September 30, 2022): 1–10. http://dx.doi.org/10.1155/2022/2000237.
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Due to the increased demand and importance of essential oils in medicinal applications, advanced essential oil extraction techniques have been employed. Both conventional hydrodistillation (HD) and microwave-assisted hydrodistillation (MAHD) were employed to extract the essential oils from the hibiscus flower. Extraction time and solvent polarity were the most critical factors. Scanning electron microscopy (SEM) was used to investigate the surface morphologies of raw powdered hibiscus flowers (not exposed to any pretreatment) and pretreated powdered hibiscus flowers (exposed to methanol absorption for 60 minutes prior to extraction). Extractive chemistry analysis utilizing Fourier transform infrared (FTIR) spectroscopy was performed on the volatile oil obtained by MAHD. Different peaks in the gas chromatography/mass spectrometry (GC/MS) analysis indicated the presence of thirty-seven different compositions. MAHD was more energy efficient, had higher yield production, and was environmentally friendly, reducing HD’s overall carbon footprint by 40%. Oxygenated monoterpene, sesquiterpene, and sesquiterpene hydrocarbons were found in the hibiscus flower’s crude extract. Moreover, the methanolic extract of Hibiscus rosa-sinensis has potent antioxidant properties. A hibiscus flower extract had scavenging activities of 51.2% at 0.2 mg/mL, 0.3% at 0.6 mg/mL, 0.8% at 1.0 mg/mL, and 68.5% at 1.2 mg/mL against DPPH free radicals. Therefore, the MAHD method is well-suited to extracting essential oils from hibiscus flowers, and the resulting oil has the potential to provide significant therapeutic advantages.
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Jeyaratnam, Nitthiyah, Abdurahman Hamid Nour, Ramesh Kanthasamy, Azhari Hamid Nour, A. R. Yuvaraj, and John Olabode Akindoyo. "Essential oil from Cinnamomum cassia bark through hydrodistillation and advanced microwave assisted hydrodistillation." Industrial Crops and Products 92 (December 2016): 57–66. http://dx.doi.org/10.1016/j.indcrop.2016.07.049.
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Demirci, Betül, Dietrich H. Paper, Fatih Demirci, K. Hüsnü Can Başer, and Gerhard Franz. "Essential Oil ofBetula pendulaRoth. Buds." Evidence-Based Complementary and Alternative Medicine 1, no. 3 (2004): 301–3. http://dx.doi.org/10.1093/ecam/neh041.
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The essential oil ofBetula pendulaRoth. buds was obtained using both hydrodistillation and microdistillation techniques and their chemical compositions were analyzed using both gas chromatography (GC) and gas chromatography–mass spectrometry (GC-MS). Overall, more than 50 compounds were identified representing 80% and 92% for hydrodistillation and microdistillation, respectively. The main components (by hydrodistillation and microdistillation, respectively) found were α-copaene (12% and 10%), germacrene D (11% and 18%) and δ-cadinene (11% and 15%) in the analyzed essential oils. The microdistillation technique proved to be a useful tool and compliant alternative when compared to hydrodistillation.
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Stanojevic, Ljiljana, Mihajlo Stankovic, Milorad Cakic, Vesna Nikolic, Ljubisa Nikolic, Dusica Ilic, and Niko Radulovic. "The effect of hydrodistillation techniques on yield, kinetics, composition and antimicrobial activity of essential oils from flowers of Lavandula officinalis L." Chemical Industry 65, no. 4 (2011): 455–63. http://dx.doi.org/10.2298/hemind110129047s.
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The essential oils from flowers of Lavandula officinalis L. (L. officinalis L. = L. angustifolia Mill.) were obtained by two hydrodistillation techniques: standard (technique I) and modified (technique II) Clevenger hydrodistillation. The yield, hydrodistillation kinetics, composition and antimicrobial activity of essential oils were investigated. The higher yield of oil was obtained by hydrodistillation technique II. The new analytical hydrodistillation kinetics model of essential oil from Lavandulae flowers was defined. The essential oil composition was analyzed by gas chromatography-mass spectroscopy (GC-MS). There are differences in chemical compositions of the oils obtained by different techniques. Antimicrobial activity of essential oil obtained by technique I and II against Salmonella enteritidis, Klebsiella pneumoniae, Staphylococcus aureus, Enterococcus faecalis, Candida albicans and Aspergillus niger is the same, while the activity against Escherichia coli and Pseudomonas aeruginosa is slightly different.
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Elyemni, Majda, Bouchra Louaste, Imane Nechad, Taha Elkamli, Abdelhak Bouia, Mustapha Taleb, Mahdi Chaouch, and Noureddine Eloutassi. "Extraction of Essential Oils of Rosmarinus officinalis L. by Two Different Methods: Hydrodistillation and Microwave Assisted Hydrodistillation." Scientific World Journal 2019 (April 1, 2019): 1–6. http://dx.doi.org/10.1155/2019/3659432.
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The extraction of essential oils is generally carried out by two main techniques: azeotropic distillation (hydrodistillation, hydrodiffusion, and steam distillation) and extraction with solvents. However, these traditional methods are a bit expensive, especially since they are extremely energy and solvent consuming. This work consists in studying two methods of extraction of the essential oils of Rosmarinus officinalis L.: microwave assisted hydrodistillation (MAH) and Clevenger hydrodistillation (CH). Several parameters have been studied: the extraction time, the yield, and the chemical composition of the essential oils as well as the efficiency and cost of each procedure. The results obtained revealed that microwave-assisted hydrodistillation makes it possible to minimize the extraction time of the essential oils in comparison with conventional hydrodistillation. Thus, the same yield of essential oils is obtained for 20 minutes only with MAH while it takes 180 minutes with CH. In addition, the quality of the essential oil is improved thanks to a 1.14% increase in oxygenates. In conclusion, the MAH method offers significant advantages over conventional hydrodistillation and can therefore replace it on a pilot and industrial scale.
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Hashemi-Moghaddam, Hamid, Majid Mohammdhosseini, and Mohammad Salar. "Chemical composition of the essential oils from the hulls of Pistacia vera L. by using magnetic nanoparticle-assisted microwave (MW) distillation: comparison with routine MW and conventional hydrodistillation." Anal. Methods 6, no. 8 (2014): 2572–79. http://dx.doi.org/10.1039/c3ay42180e.
Full textDissertations / Theses on the topic "Hydrodistillation"
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Yii, Ivy Siew Aing. "Microwave-Assisted Hydrodistillation: Garlic Essential Oil Recovery." Thesis, Curtin University, 2017. http://hdl.handle.net/20.500.11937/73545.
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Garlic essential oil possesses several desired pharmacological effects. Microwave-assisted hydrodistillation (MAHD) was adopted as to reduce the extraction period and improve extraction yield. The antimicrobial properties of the extracted essential oils were analysed and a rigorous fundamental model was developed to represent the process. The results showed that the MAHD combined with water-ethanol solvent can increase the extraction rate, shorten the extraction period and maintain the antimicrobial property of the garlic oil.
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Bayramoglu, Beste. "Solvent-free Microwave Extraction And Microwave-assisted Hydrodistillation Of Essential Oils From Spices." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608874/index.pdf.
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ABSTRACT
SOLVENT-FREE MICROWAVE EXTRACTION AND MICROWAVEASSISTED
HYDRODISTILLATION OF ESSENTIAL OILS FROM
SPICES
Bayramoglu, Beste
M.S., Department of Food Engineering
Supervisor: Assoc. Prof. Dr. Serpil Sahin
Co-Supervisor: Assoc. Prof. Dr. S. Gülü
m Sü
mnü
September 2007, 130 pages The undesirable effects of conventional methods generated the need for economical and safe techniques in the extraction of essential oils. Microwave-assisted hydrodistillation (MAHD) and solvent-free microwave extraction (SFME) are recently developed techniques, which are thought to overcome this problem. Oregano (Origanum vulgare L.), laurel (Laurus nobilis L.) and rosemary (Rosmarinus officinalis L.) were chosen in this study since they have high antimicrobial and antioxidant effects and are widely grown and consumed in Turkey. The objectives of this study were to examine the applicability of SFME in the extraction of essential oils from oregano and laurel, and MAHD in the extraction of rosemary essential oil. The effects of microwave power and extraction time on the yield, composition, and other quality parameters of the extracts were also investigated. Hydrodistillation was performed as control. SFME offered significantly higher essential oil yields (0.054 mL oil/g oregano) from oregano as compared to hydrodistillation (0.048 mL oil/g oregano). Conventional process time was reduced by 80%. Main aroma compound was thymol (650-750 mg thymol/mL oil). For laurel, no significant differences were obtained in yields (about 0.022 mL oil/g laurel) obtained by SFME and hydrodistillation. Process time was reduced by 55-60%. Main aroma compound was 1,8-cineole (630-730 mg 1,8-cineole/mL oil). In the case of rosemary, no significant differences were obtained in yields (about 0.026 mL oil/g rosemary) obtained by MAHD at 622 W and hydrodistillation. The process time was reduced by about 65%. Main aroma compounds were 1,8-cineole (430-500 mg 1,8-cineole/mL oil) and camphor (150-210 mg camphor/mL oil). Keywords: Solvent-free microwave extraction (SFME), Microwave-assisted hydrodistillation (MAHD), Origanum vulgare L., Laurus nobilis L., Rosmarinus officinalis L.
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Herzi, Nejia. "Extraction et purification de substances naturelles : comparaison de l’extraction au CO2-supercritique et des techniques conventionnelles." Phd thesis, Toulouse, INPT, 2013. http://oatao.univ-toulouse.fr/9437/1/herzi.pdf.
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Ce travail concerne l'extraction de substances naturelles d'origine végétale en utilisant des procédés « verts » tels que l'extraction au CO2 supercritique (CO2-SC, de 90 à 1000 bar) et l'extraction à l'eau sub-critique (SWE). Ces procédés sont une alternative à l'hydrodistillation (HD) et l'extraction par solvant (SE) traditionnellement utilisés dans l'industrie des produits naturels. La majorité du travail a été réalisée sur l'espèce Tetraclinis articulata où les performances des procédés, CO2-SC , HD, SWE et SE, ont été optimisées puis comparées en termes de rendement, composition chimique, durée…, et en particulier activité antioxydante des extraits (évaluée par les tests ABTS+ and DPPH). La plus forte activité antioxydente a été mise en évidence pour les extraits CO2-SC, ceci étant très probablement dû à une moindre dégradation thermique, comme l'a indiqué la comparaison des compositions chimiques. La CO2-SC basse pression (90 bar) a permis d'obtenir un extrait de bonne qualité et, pour ce cas, une modélisation a été proposée pour comprendre et identifier le mécanisme limitant qui s'est avéré être l'équilibre solide-fluide. La modélisation de l'hydrodistillation a également été proposée, basée sur le modèle de Sovová . Ensuite, l'approche a été étendue à d'autres plantes : Eucalyptus cinerea, Eucalyptus Camaldulensis, Cypres sempervirens et callitris. ABSTRACT : This work has dealt with extraction of natural substances from plants using « green » processes such as supercritical CO2 extraction (CO2-SC from 90 to 1000 bar) and extraction with subcritical water (SWE). These processes are an alternative to hydrodistillation (HD) and solvent extraction (SE) traditionally used in the natural products industry. Main part of the work was done on the species Tetraclinis articulata, and performance of the different processes, CO2-SC, HD,SWE and SE, were optimized and compared in terms of yield, chemical composition, duration ... and especially antioxidant activity of extracts (assessed by the ABTS+ and DPPH tests). CO2-SC extracts exhibited the strongest antioxidant activity and comparison of chemical compositions of the different extracts indicated that this is very probably due to lower thermal degradation of active molecules. For low pressure CO2-SC (90 bar), a model was proposed to understand and identify the limiting mechanism that proved to be solid-fluid equilibrium. For hydrodistillation, modelling, based on the Sovová 's model was also proposed. Then, the approach was extended to other plants: Eucalyptus cinerea and Eucalyptus camaldulensis, Cypres sempervirens and Callitris.
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Mthembu, Zandile Lorraine. "Studies of chemical constituents on the aerial parts of pelargoniumcapitatum." University of the Western Cape, 2017. http://hdl.handle.net/11394/6544.
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>Magister Scientiae - MScPelargonium capitatum is a plant that is popular in essential oils. The isolated essential oil constituents from the flowers and leaves of the plant were obtained by hydrodistillation followed by GC-MS analysis. The following essential constituents were obtained in abundance from flowers and leaves 8, 11-octadecadienoic acid and citronellol, caryophyllen, α-cubebene, copaene, azulene, pentacosane, 9, 12- octadecadienoic acid. Crude extracts from Pelargonium capitatum were fractionated through various chromatographic techniques in order to achieve satisfactory separations. Four compounds were characterized and the structural elucidation were unambiguously confirmed by spectroscopic methods including one and two-dimensional nuclear magnetic resonance and high resolution mass spectroscopy. The compounds were isolated from the ethyl acetate (2) and hexane (2) extracts, respectively. The four isolates were identified as quercetin, quercetin xylopyranoside, β-sitosterol and undecaprenol. The isolate and the different extracts were tested for cytotoxicity using brine shrimp lethality test. The results showed that quercetin and the extracts were active with hexane extract showed the highest cytotoxicity level of 1.5μg/ml. To the best of our knowledge quercetin xylopyranoside, β-sitesterol and undecaprenol compounds are reported for the first time from Pelargonium capitatum.
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Elouma, Ndinga Arnold Murphy. "Inventaire et analyse chimique des exsudats des plantes d'utilisation courante au Congo-Brazzaville." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112023/document.
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Les exsudats des plantes sont des substances naturelles complexes. Ils sont utilisés par plusieurs populations d’Afrique et trouvent de nombreuses applications : en thérapeutique, en pharmacie galénique, en parfumerie, etc. Au Congo, une grande majorité de ces substances est encore mal connue. Ce travail de thèse a consisté à inventorier les plantes à exsudats du Congo et à mettre au point une méthodologie d’analyse physico-chimique permettant la caractérisation des exsudats d’arbres d’origine botanique certifiée.La méthodologie d’inventaire adoptée nous a permis de recenser 135 plantes à exsudats appartenant à 87 genres. Il en ressort de cette étude que les exsudats des plantes inventoriées ont multiples usages (glu, insectifuge, allume-feu, antidouleur, etc.).La stratégie mise en place pour leur caractérisation fait appel à plusieurs techniques analytiques (SPIR, SMIR, CPG-SM, GCxGC-MS) et de traitement d’échantillon (Hs-SPME, hydrodistillation, extraction au Soxhlet, silylation, méthylation, pyrolyse). Dans le cadre de ce travail deux exsudats ont été caractérisés. L’exsudat de D. edulis (G. Don) K.J. Lam qui est constitué de monoterpènes hydrocarbonés et de triterpènes, dont les majeurs sont : 3-épi-α et -β-amyrine. L’exsudat de G. demeusei (Harms) J. Léonard dont la fraction volatile est constituée essentiellement de sesquiterpènes et la fraction peu-volatile d’acides diterpéniques de type labdane (acide éperuique, cativique, copalique, ozique, etc.).Pour exploiter l’efficacité de séparation élevée de la GCxGC-MS, nous nous sommes confronté aux problèmes de la non-répétabilité des cartes chromatographiques obtenues en 2D. Nous avons alors mis en place une méthodologie permettant de vérifier l’épaisseur de film et l’homogénéité des dépôts de phases stationnaires afin de sélectionner des colonnes courtes identiques pour la GCxGC. Cependant, les résultats préliminaires ont montré que même avec des colonnes de deuxième dimension identiques, on pouvait avoir des différences au niveau de carte 2DPlant exudates are natural complex substances. They are used by several populations in Africa and have many applications: in therapeutics, in galenic pharmacy, in perfumery, etc. In Congo, a great majority of these substances are not yet well known. This thesis work aimed to make an inventory of plant exudates from Congo and to develop a methodology for performing physico-chemical analysis which may enable characterization of exudates from botanical certified trees.Through the methodology that we developed, 135 plant exudates belonging 87 genera were registered. It was observed in this study that these exudates are used for many purposes (glue, insect repellent, making fire, anti-pain, etc).The strategy implemented for characterizing the exudates included several analytical (SNIR, SMIR, GC-MS, GCxGC-MS) and sample processing (Hs-SPME, hydrodistillation, extraction using the Soxhlet, silylation, methylation pyrolyse) techniques. With regard to this work, two exudates were characterized. The exudates from D. edulis (G. Don) K.J. Lam which contained monoterpene hydrocarbons and triterpenes, with the major constituents being: 3-epi-α and -β-amyrine. The exudates from G. Demeusei (Harms) J. Léonard was found to have the sesquiterpenes as major constituents of the volatile fraction and the labdane-type diterpenes (eperuique acide, cativique acid, copalique acid, ozique acid, etc) as major constituents of the poor-volatile fraction.To explore the efficacy of elevated separation of the GCxGC-MS, we faced some problems related to the non-repeatability of chromatographic cards obtained in 2D. Therefore, we put in place a methodology which enables us to verify the film thickness and homogeneity of layers of stationary phases in order to select identical short columns for GCxGC. However, the preliminary results have shown that even using second identical dimension columns, we could observed differences in 2D cards
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Vandenbossche, Maréchal Virginie. "Fractionnement des tiges et capitules de tournesol : hydrodistillation d'une huile essentielle odorante, extraction et modification chimique de pectines, et mise en forme d'agromatériaux biodégradables." Toulouse, INPT, 1998. http://www.theses.fr/1998INPT025C.
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La recherche de nouveaux debouches pour les co-produits de culture du tournesol, a ete motivee par les tonnages eleves de residus generes. Dans un premier temps, une etude approfondie des caracteristiques physico-chimiques des differentes parties de la plante, debarrassee de ses graines, nous a permis de cibler deux produits interessants : une huile essentielle fortement odorante utilisable en parfumerie, et des pectines, connues pour leur teneur elevee dans le capitule, mais egalement presentes dans la moelle de la tige. Un approfondissement de cette etude a permis d'identifier les principaux constituants de huile essentielle, jusqu'a present inconnue. Parallelement, l'analyse de l'evolution des pectines de capitule au cours de la croissance de la plante nous a amene a relier leur faible degre de methylation (deja connu), a l'activite accrue des pectines methylesterases (pme) en fin de maturation de la plante. Ceci a conduit a envisager une strategie transgenique, ayant pour but de controler l'action des pme afin d'obtenir des pectines de degre de methylation superieur, utilisables dans le domaine des gelifiants. Une autre voie de valorisation des pectines a egalement ete etudiee a travers leur modification chimique, par esterification, avec des alcools a longue chaine. Cette etude a abouti a la synthese, sous activation micro-ondes, de molecules tensioactives dont les proprietes pourront offrir de nouvelles opportunites dans des domaines tels que les detergents ou les peintures. Enfin, dans une derniere partie, l'ensemble du procede de valorisation est aborde, incluant : les problemes lies a l'organisation de la recolte, les procedes d'obtention des extraits a l'echelle pilote, et la fabrication, suivie de la caracterisation mecanique, de materiaux type carton ondule, ou de materiaux faible densite a base de moelle destines aux domaines du calage et de l'emballage. En conclusion, un schema global de valorisation des co-produits est propose.
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Ferrer, Vincent. "Etude de l’hérédité et des facteurs de variation du rendement, de la composition et des propriétés aromatiques des huiles essentielles d’oranges (Citrus sinensis L. Osbeck) et de bigarades (C. aurantium L.)." Electronic Thesis or Diss., Corte, 2022. http://www.theses.fr/2022CORT0007.
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La présence d’huiles essentielles dans la peau des fruits et des feuilles constitue une spécificité des agrumes tels que l’orange et la bigarade. Cette huile essentielle contient de nombreux composés, variables en quantité et en nombre selon l’espèce ou la variété, et dont certains possèdent des propriétés aromatiques très appréciées par les consommateurs et par l’industrie agroalimentaire et des cosmétiques et des parfums. La quantité des composés aromatiques peut varier en fonction de nombreux facteurs liés aux techniques culturales, à l’environnement (climat, sol), à la maturité des fruits, aux méthodes de séchage de la peau et à la génétique (variétés et hybrides). Cette variation de composition de l’huile peut provoquer une modification de l’arôme et donc changer les caractéristiques du fruit ou d’un produit transformé. La thèse avait donc comme objectif d’évaluer l’impact sur la composition chimique et le profil aromatique : du porte-greffe, de la ploïdie, du stade de développement du fruit, de la variabilité, du séchage et de la conservation de la peau des fruits et la génétique liée à la mutation (diversité variétale) et celle produite par l’hybridation. Les huiles essentielles ont été extraites par hydrodistillation, leur composition déterminée par chromatographie en phase gazeuse couplée avec un détecteur à ionisation de flamme et avec un spectromètre de masse. En parallèle leurs arômes ont été caractérisés par différentes analyses sensorielles. Des marqueurs génétiques ciblant des microsatellites et le polymorphisme nucléotidique ont été utilisés pour évaluer la diversité génétique de la collection variétale des deux espèces d’agrumes et construire une carte génétique de l’oranger via une approche de génotypage par séquençage pour localiser les locus de caractères quantitatifs des composés aromatiques.La composition chimique de l’huile essentielle de zestes des deux agrumes est dominée par le limonène qui représente plus de 90% de l’huile essentielle ce qui gêne l’analyse de la variabilité des autres composés. La composition chimique et le profil aromatique des huiles essentielles sont gouvernés par plusieurs facteurs. L’hybridation est évidemment le facteur le plus perturbant car l’oranger est un hybride interspécifique donc très hétérozygote et très peu d’hybrides clémentinier/oranger reproduisent un profil aromatique semblable à l’orange. A l’opposé, la diversité variétale surtout basée sur la mutation n’engendre que très peu de variation tant aromatique que chimique. Néanmoins, chez les bigaradiers des profils atypiques ont été détectés issus d’hybridations identifiées comme différentes de la phylogénie des bigaradiers classiques. Le stade de développement du fruit a aussi une forte influence mais seulement lorsque les fruits sont petits et immatures (juillet – septembre). Le porte-greffe ainsi que son niveau de ploïdie et celui du scion n’ont qu’une faible influence sur la composition et le profil aromatique. En post-récolte, la méthode de séchage est très influente en induisant sous l’action de la chaleur la dégradation de composés de la famille des monoterpènes oxygénés et des aldéhydes aliphatiques ce qui entraine la détérioration du profil aromatique. En revanche, tous les facteurs étudiés modifient de manière importante le rendement en huile. La cartographie génétique a localisé vingt locus de caractères quantitatifs de quinze composés et du rendement en huile essentielle dont certains positionnés dans les mêmes groupes de liaison.Au cours de cette thèse, les principaux facteurs d’instabilité de l’huile essentielle d’orange et de bigarade ont été quantifiés et des suggestions ont été faites quant aux travaux complémentaires à réaliser pour mieux contrôler la qualité des arômes. Des recommandations de traitements à appliquer sur le séchage des peaux d’orange et de bigarade pour préserver au mieux leur qualité aromatique ont été proposéesThe presence of essential oils in the fruit skin and leaves is a specificity of citrus fruits such as orange and sour orange. This essential oil contains numerous compounds, varying in quantity and number according to the species or variety, and some of which have aromatic properties highly appreciated by consumers and by the agri-food, cosmetics and perfume industries. The quantity of aromatic compounds can vary according to many factors related to cultivation techniques, environment (climate, soil), fruit maturity, skin drying methods and genetics (mutants and hybrids). This variation in the essential oil composition can cause a modification of the aroma and thus change the characteristics of the fruit or of a processed product. The objective of the thesis was therefore to evaluate the impact on the chemical composition and aroma profile of rootstock, ploidy, stage of fruit development, variability, drying and preservation of the fruit skin, and genetics related to mutation (varietal diversity) and that produced by hybridization (progeny). The essential oils were extracted by hydrodistillation, their composition determined by gas chromatography coupled with a flame ionization detector and a mass spectrometer. In parallel, their aromas were characterized by different sensory analyses. Genetic markers such as microsatellites (SSR) and nucleotide polymorphism (SNP) were used to assess the genetic diversity of the varietal collection of sweet and sour oranges and to build a genetic map of orange via a genotyping sequencing approach (GBS) to locate the quantitative trait loci (QTLs) of the aromatic compounds.The chemical composition of the peel essential oil (PEO) of both citrus fruits is dominated by limonene representing more than 90% of the total hindering the analysis of the variability of other compounds. The chemical composition and aromatic profile of essential oils are modified by several factors. Hybridization is obviously the most disturbing factor because the orange tree is an interspecific hybrid and therefore very heterozygous, and very few clementine/orange hybrids reproduce an aromatic profile similar to that of orange. On the other hand, varietal diversity, mainly based on mutation, generates very little variation, either aromatic or chemical. Nevertheless, atypical profiles of few sour orange cultivars have been identified as hybrids originated from a different cross than the regular genotypes. The stage of fruit development has also a strong influence but only when the fruits are small and immature (July - September). The rootstock and the ploidy level have only a weak influence on the composition and aromatic profile of orange PEO. In post-harvest, the drying method induces, under the action of heat, the disappearance of compounds of the family of oxygenated monoterpenes and aliphatic aldehydes, which leads to the deterioration of the aromatic profile. On the other hand, all the factors studied significantly modify the oil yield. Genetic mapping located twenty quantitative trait loci of fifteen compounds and essential oil yield, some of which were positioned in the same linkage groups.During the course of this thesis, the main factors of instability in orange and sour orange essential oil were quantified and suggestions were made for further work to better control flavor quality. Recommendations of treatments to be applied on orange and sour orange peels drying to preserve their aromatic quality were proposed
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Ribeiro, Leticia Gouveia. "Extração assistida por micro-ondas de óleo essencial de folhas de eucalipto (eucalyptus urophylla x globulus)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/181316.
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A celulose das árvores do gênero Eucalyptus é um dos principais elementos de interesse econômico desse vegetal. Suas folhas, apesar de conter óleo essencial (OE), caracterizam-se como um subproduto da indústria de processamento de papel e celulose. Assim, pesquisas com relação à recuperação dessa biomassa tornam-se importantes, principalmente, do ponto de vista ambiental e econômico. Tradicionalmente, a extração de OEs ocorre pelo processo de hidrodestilação (HD), o qual necessita de longos tempos de extração. Visando superar essa restrição, a tecnologia de extração assistida por micro-ondas (Microwave Assisted Extraction - MAE) vem sendo desenvolvida e aplicada. O objetivo principal deste estudo foi avaliar o processo de extração de OE de folhas de eucalipto, empregando os métodos de extração HD e MAE. Para esse processo em escala de bancada, desenvolveu-se um aparato de extração por meio da adaptação de um forno micro-ondas doméstico. Inicialmente, analisou-se o rendimento de OE das matrizes de subprodutos de folhas de eucalipto das espécies Eucalyptus saligna, E. urohpylla e E. urophylla x globulus geradas a partir de uma indústria de celulose. Os resultados apontaram que a espécie E. urophylla x globulus apresentou maior teor de OE (2,16±0,02%), sendo a espécie escolhida para a aplicação da tecnologia MAE. Na segunda etapa do estudo, fez-se uma avaliação dos efeitos dos fatores do processo MAE, avaliando os fatores razão sólido:solvente (1:1; 1:1,5 e 1:2), potência do micro-ondas (680, 850 e 1.020 W) e tempo de extração total (20, 40, 60 min) no rendimento de OE. Desse modo, as condições ideais do processo foram determinadas como: razão sólido:solvente de 1:2, potência de 680 W e tempo de extração total de 60 minutos. Para essas condições, realizou-se o estudo cinético e modelagem matemática com a avaliação dos modelos de primeira ordem, segunda ordem, Peleg e Patricelli. No estudo cinético, o tempo total do processo MAE para a obtenção do rendimento de 1,8±0,1% foi apenas 60 minutos, tempo 57% inferior ao observado no método HD para igual rendimento (140 minutos). Dentre os modelos cinéticos estudados, o modelo de Patricelli foi o que apresentou melhor ajuste aos dados experimentais da extração HD (R² igual 0,9904 e RMSE igual 0,0016) e da extração MAE (R² igual 0,9962 e RMSE igual 0,0006). Por fim, as análises energéticas e de impacto ambiental também indicaram o método MAE como uma tecnologia mais ambientalmente amigável do que a HD, tornando-se atrativa para o setor industrial. Com base nos resultados obtidos, pode-se concluir que a extração de OE da matriz estudada proporcionou a reutilização de um subproduto industrial, sugerindo uma alternativa de exploração e agregando valor ao mesmo.The cellulose from trees of the genus Eucalyptus is the main industrial product of this species. Its leaves, although containing essential oil (EO), are characterized as a by-product from the pulp and paper processing industry. Thus, researches about the recovery of this biomass are important, mainly from the environmental and ecological point of view. Traditionally, the extraction of EO occurs by hydrodistillation (HD), process that requires long extraction times. In order to overcome this restriction, microwave assisted extraction (MAE) has been developed and applied. The main objective of this study was to evaluate the extraction process of eucalyptus EO, using the HD and MAE methods. For this laboratory-scale process, an extraction apparatus was developed through the adaption of a domestic microwave oven. Initially, the yield of EO by-products of eucalyptus leaves of the species Eucalyptus saligna, E. urophylla and E. urophylla x globulus from a cellulose industry were analyzed. The results showed that the species E. urophylla x globulus presented the highest EO content (2.16 ± 0.02%), being the species chosen for the application of the MAE technology. In the second stage of the study, an evaluation of the effects of MAE process factors was performed, analyzing the factors ratio solid:solvent (1:1, 1:1,5 and 1:2), microwave power (680, 850 and 1.020 W) and total extraction time (20, 40, 60 min) in the EO yield. Thus, the ideal process conditions were determined as: ratio solid:solvent of 1:2, power of 680 W and total extraction time of 60 minutes. For these conditions, a kinetic study and a mathematical modeling were performed evaluating the first-order, second-order, Peleg and Patricelli models. In the kinetic study, the total time of the MAE process to obtain the yield of 1.8 ± 0.1% was only 60 minutes, 57% lower than the HD method for the same yield (140 min). Among the kinetic models studied, the Patricelli model presented the best fit to the experimental data of the HD extraction (R² equal to 0.9904 and RMSE equal to 0.0016) and MAE extraction (R² equal to 0.9962 and RMSE equal to 0.0006). Finally, the energy and environmental impact analyzes also indicated the MAE method more environmentally friendly than HD, being attractive for the industrial sector. Based on the results, it is possible to conclude that the extraction of EO from the studied matrix provided the reuse of an industrial by-product, suggesting an exploration alternative adding value to this residue.
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Zaremski, Clara. "Pour une production contrôlée d’agarwood d’Aquilaria crassna Pierre ex Lecomte en Guyane : Approches métagénomique, biochimique et histologique A review of the conditions of worldwide agarwood production and development prospects in French Guiana Caractérisation des communautés fongiques associées à Aquilaria Crassna Pierre ex Lecomte en plantation en Guyane française Composition chimique de l'agarwood d'aquilaria Crassna Pierre Ex. Lecomte des plantations de Guyane, en fonction du mode d'induction Détection rapide de l'agarwood et évaluation de sa composition chimique par spectrométrie proche infrarouge (SPIR) Etude histologique des cals d'aquilaria crassna colonisés par les champignons lignivores pycnoporus sanguineus gloeophyllum trabeum et antrodia vaillantii." Thesis, Guyane, 2020. http://www.theses.fr/2020YANE0002.
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Les arbres du genre Aquilaria Lam. (Thymelaeaceae), en réaction à un stress mécanique, produisent, en interactions avec des micro-organismes, un bois transformé par sa forte teneur en composés secondaires : l’agarwood (AW). Il est apprécié en parfumerie pour son odeur boisée. Face à la forte demande mondiale, des agriculteurs ont réalisé des plantations expérimentales d’Aquilaria en Guyane (projet Aquil@Guyane) afin de produire une huile essentielle de composition chimique contrôlée, respectueuse de la biologie de l’arbre et de l’environnement. Dans ce contexte, nous avons produit des connaissances académiques pour contribuer au développement de la production d’AW d’Aquilaria crassna en Guyane. Après caractérisation des communautés fongiques présentes dans les arbres d’A. crassna en Guyane, révélant le rôle des Basidiomycètes dans la production d’AW, deux méthodes d’induction d’AW ont été comparées : 1- levée d’écorce et application du sol de la plantation sur la blessure ; 2- inoculation de souches guyanaises de Basidiomycètes. Cette dernière est la plus efficace pour obtenir un AW de qualité proche d’un AW de référence. La Spectrométrie Proche Infrarouge (SPIR) a été utilisée pour différencier le bois sain de l’AW et différentes compositions chimiques d’AW. Les résultats obtenus sont cohérents avec ceux de l’analyse biochimique après hydrodistillation : utiliser la SPIR pour trier et contrôler la qualité de l’AW est envisageable. Une méthode de culture de cals d’Aquilaria a été mise au point pour comprendre les mécanismes moléculaires de la production d’AW. Les résultats indiquent une production de terpènes par les cals d’Aquilaria inoculés par des souches fongiquesTrees of the genus Aquilaria Lam. (Thymelaeaceae) in response to mechanical stress produce, in interaction with microorganisms, a wood transformed by its high content of secondary compounds: agarwood (AW). It is appreciated in perfumery for its woody fragrance. Faced with strong global demand, farmers have carried out experimental plantations of Aquilaria in French Guiana (Aquil@Guyane project) in order to produce an essential oil with a controlled chemical composition, respectful of the biology of the tree and the environment. In this context, we have produced academic knowledge to contribute to the development of AW production of Aquilaria crassna in French Guiana. After characterization of the fungal communities present in A. crassna trees in French Guiana, revealing the role of Basidiomycetes in the production of AW, two methods of induction of AW were compared: 1- lifting of bark and application of the soil of the plantation on the wound; 2- inoculation of Guyanese strains of Basidiomycetes. The latter is the most effective for obtaining a quality AW close to a reference AW. Near Infrared Spectrometry (NIRS) has been used to differentiate healthy wood from AW and different chemical compositions of AW. The results obtained are consistent with those of the biochemical analysis after hydrodistillation: using NIRS to sort and control the quality of AW is possible. An Aquilaria callus culture method has been developed to understand the molecular mechanisms of AW production. The results indicate the production of terpenes by Aquilaria callus inoculated with fungal strains
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Oliveira, Lucas Fonseca Menezes. "Controle alternativo da antracnose durante a pós-colheita de goiabas "Paluma" simulando armazenamento e a comercialização." Universidade Federal de Sergipe, 2012. https://ri.ufs.br/handle/riufs/6648.
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Conselho Nacional de Desenvolvimento Científico e TecnológicoBrazil is one of the largest producers of fruit, guava with the culture of great importance in the diet of the population by having large amounts of vitamins, and carbohydrates and carotenoids. The postharvest of guava can be regarded as a problem for the broader participation of Sergipe in the marketing of this fruit in other parts of the country. The alternative control of fungal diseases plays an important role in the search for the most demanding consumer markets for healthy products and known origin. Thus the objective of this study was to develop and refine a technique that allows the storage of guavas for prolonged periods without the use of agrochemicals and excellent post-harvest quality in order to reduce costs and increase food security. Through the process of hydrodistillation essential oil was obtained from seeds of Shinus terebinthifolius from seeds and leaves and it was verified the oil yield in different periods of distillation and a period of 2.5 h distillation recommended for this plant. This had its chemical composition determined by analysis by gas chromatography, the components found in greater quantity in the oil were: ρ-Menth-1-en-9-ol, α-Thujene, β-pinene, Camphene, α - Fenchene , Terpinen-4-ol acetate, Bornyl Acetate, Cariophilene, Terpinen-4-ol, α-Terpineol, Germacrene - D, δ-cadinene, Hedycariol, α - Gurjunene, α-eudesmol, β-eudesmol. Petri dishes containing PDA culture medium supplemented with different concentrations of essential oil of S. terebinthifolius were inoculated with mycelial structures of the fungus Colletotrichum gloeosporioides for determining the lowest inhibitory concentration (MIC) of the oil on the mold where there is an efficiency of approximately 47% for controlling fungus at concentrations of 2%, 3%, 4%, 5% oil in the culture medium, as recommended concentration of 2% of essential oil in vivo tests. Guava fruit harvested at mature were inoculated with the fungus that causes anthracnose and treated with essential oil of aroeira da praia 3% being placed in low temperature (15 °C) and temperature (25 °C) in order to assess the period of storage and marketing guava and the development of the fungus against the essential oil. There was loss of weight in fruit and little variation in the amounts of soluble solids during the storage period. The guavas were already significant loss of firmness on the 5th day of storage. Significant change in the peel and pulp of guava during storage was an expected behavior for this variety of guavas. The essential oil delayed the appearance of characteristics of anthracnose lesions 3 days compared with the fungicide used in the experiment. It was demonstrated the accumulation of proline in the guavas during the post-harvest, indicating that the accumulation of proline may be related to weight loss and the development of anthracnose in guavas.
O Brasil é um dos maiores produtores mundiais de frutas, tendo a cultura da goiabeira grande importância na alimentação da população por apresentar grandes quantidades de vitaminas, além de carboidratos e carotenóides. A pós-colheita da goiaba pode ser considerada como um problema para a ampliação da participação de Sergipe na comercialização desta fruta em outras regiões do país. O controle alternativo de doenças fúngicas assume papel importante na busca de mercados consumidores mais exigentes por produtos saudáveis e de procedência conhecida. Desta forma o objetivo deste trabalho foi desenvolver e aprimorar uma técnica que possibilite o armazenamento de goiabas por períodos prolongados, sem o uso de agroquímicos e com excelente qualidade pós-colheita, de forma a reduzir os custos e aumentar a segurança alimentar. Pelo processo de hidrodestilação foi obtido o óleo essencial de sementes de aroeira da praia sendo verificado o rendimento do óleo em diversos períodos de destilação sendo o período de 2,5h de destilação o recomendado para essa planta. Esse que teve a sua composição química determinada através de análise em cromatógrafo gasoso. Os componentes encontrados em maior quantidade no óleo foram: ρ-Menth-1-em-9-ol, α-Thujene, β-Pinene, Camphene, α Fenchene, Terpinen-4-ol acetate, Bornyl Acetate, Cariophilene, Terpinen-4-ol , α-Terpineol, Germacrene D, δ-Cadinene, Hedycariol, α Gurjunene, α-Eudesmol, β-Eudesmol. Em placas de Petri contendo meio de cultura BDA acrescido de diversas concentrações do óleo essencial de aroeira da praia foram depositadas estruturas miceliais do fungo Colletotrichum gloeosporioides para a determinação da menor concentração inibitória (MCI) do óleo, onde se verificarou uma inibição de aproximadamente 47% no desenvolvimento do fungo nas concentrações de 2%, 3%, 4%, 5% do óleo no meio de cultura, sendo recomendada a concentração de 2% de óleo essencial para testes in vivo. Frutos de goiabeira colhidos fisiologicamente maduros foram inoculados com o fungo causador da antracnose e tratados com óleo essencial de aroeira da praia 3% sendo acondicionados em baixa temperatura (15 °C) e temperatura ambiente (25 °C) com o intuito de avaliar o período de armazenamento e comercialização da goiaba e também o desenvolvimento do fungo frente o óleo essencial. Verificou-se perda de massa fresca nos frutos e pouca variação nos valores de sólidos solúveis durante todo o período de armazenamento. As goiabas apresentaram perda de firmeza significativa já no 5° dia de armazenamento. Houve alteração significativa na coloração da casca e da polpa das goiabas durante o armazenamento, comportamento já esperado para essa variedade de goiaba. O óleo essencial retardou o surgimento de lesões características da antracnose em 3 dias quando comparado com o fungicida utilizado no experimento. Foi comprovado o acúmulo de prolina nas goiabas durante o período de pós-colheita, o que pode ter relação com a perda de massa fresca e com o desenvolvimento da antracnose em goiabas.
Book chapters on the topic "Hydrodistillation"
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Putri, Ditta Kharisma Yolanda, Ardetha Titarnia Aurly, Siti Fatimah, and Boy Arief Fachri. "The Comparison of Essential Oil Extraction from Citronella Grass (Cymbopogon nardus L.) Using Solvent-Free Microwave Extraction and Microwave Hydrodistillation Methods." In Proceedings of the 4th International Conference on Life Sciences and Biotechnology (ICOLIB 2021), 297–302. Dordrecht: Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-062-6_29.
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David Durán-Aranguren, Daniel, Caren Juliana Alméciga Ramírez, Laura Catalina Villabona Díaz, Manuela Ayalde Valderrama, and Rocío Sierra. "Production of Pectin from Citrus Residues: Process Alternatives and Insights on Its Integration under the Biorefinery Concept." In Pectins [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.100153.
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This chapter describes the pectin production process from citrus residues. It discusses the importance of essential oils removal before processing through steam distillation, hydrodistillation, or solvent extraction. Also, it presents different extraction methods (acid hydrolysis, microwave-assisted acid hydrolysis, and hydrodistillation) that have been employed and different solvents that can be used for its purification. Since all these processing parameters can affect the final pectin yield and quality, a discussion is made on which processing options and conditions could be used based on recently reported data. The best operational conditions based on the percentages of pectin recovery and their relationship with quality parameters, such as the galacturonic acid content and degree of esterification are presented. Finally, a discussion is made regarding the opportunities for its integration under the biorefinery concept that could help to enhance several economic and environmental aspects of the process.
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Kumar Mahawer, Sonu, Himani, Sushila Arya, Ravendra Kumar, and Om Prakash. "Extractions Methods and Biological Applications of Essential Oils." In Essential Oils - Advances in Extractions and Biological Applications [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102955.
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Plants produce secondary metabolites for defense and based on the biosynthetic pathway, these chemical compounds are broadly divided into three categories namely nitrogen-containing compounds, phenolic compounds, and terpenes. Essential oils and other such compounds are known for their biological activities. The extraction of essential oils is a challenging aspect for researchers in the field of natural products. Hydrodistillation is a time-consuming and very tedious method. Nowadays, accelerated solvent extraction, supercritical fluid extraction, subcritical water extraction, microwave hydrodiffusion are promising alternatives for conventional methods with several advantages. Essential oils have several biological activities in the field of pharmacological, ethnopharmacological, pesticidal, etc.
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"Application of headspace gas chromatography in essential oil analysis. VII. Hydrodistillation compared with headspace." In Progress in Essential Oil Research, 551–54. De Gruyter, 1986. http://dx.doi.org/10.1515/9783110855449-047.
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Costa, Devyllen Cristina, Camila Fernandes de Jesus, Maria Tereza Faria, Heleno Dias Ferreira, and Pedro Henrique Ferri. "Chemical composition of the essential oil of Hypenia helenoi M.T. Faria." In DEVELOPMENT AND ITS APPLICATIONS IN SCIENTIFIC KNOWLEDGE. Seven Editora, 2023. http://dx.doi.org/10.56238/devopinterscie-012.
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Hypenia has been subject to taxonomic variations, from one botanical section to a genus of Hyptidinae and remaining undivided or divided up into seven infrageneric sections. Essential oils (EOs) constituents of Hypenia were described only recently and supported the division of the genus into two taxonomic sections. In this work, the composition of EOs of H. helenoi was analyzed using gas chromatography coupled with quadrupole mass spectrometry (GC/MS). Hydrodistillation of aerial parts led to 45 compounds, with emphasis on sesquiterpene hydrocarbons (78%) such as b-element (27%), germacrene D (20%), (E)-caryophyllene (7%) and bicyclo germacrene (6%). b-Pinene (4%) was the majority among the monoterpenes (10%), suggesting the mevalonate pathway in EO biosynthesis. Minor constituents such as globular, spathulenol, and humulene epoxide II were rarely identified in the family (Lamiaceae), while other constituents were described for the first time in the genus.
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Ikhiwili Oniha, Margaret, Eze Frank Ahuekwe, and Sharon Oluwatobi Akinpelu. "Phytochemical Contents of Essential Oils from Cymbopogon Species: A Tropical Medicinal Plant." In Tropical Plant Species and Technological Interventions for Improvement. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.105396.
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Natural resources especially medicinal plants possess the potentials to sustain all existence on earth. Cymbopogon, a globally cultivated herb, possesses high contents of diverse essential oils for medicinal and economic purposes including treatment of malaria and candidiasis. Notable species include Cymbopogon citratus and C. flexosus having citral as the main chemical compound. Numerous compounds of these species include limonene, citronella, geranyl acetic derivatives, elemol, among others. Phytochemical analysis of these essential oils is usually done by the gas chromatography-mass spectrometry (GC-MS) method sequel to obtaining them through solvent extraction, hydrodistillation, supercritical CO2 extraction, chromatography among others. Although the supercritical CO2 extraction method gives greater quality yields void of toxic wastes with preserved thermal stability compared with other methods, its high-working pressure generates issues of safety risks and costs. Quantitative determination is done using spectrophotometric, chromatographic, and Folin-Ciocalteu methods. In comparison with other chromatographic techniques employed, gas chromatography exhibits greater efficiency by quantifying and determining the presence of various components at low concentrations. This prominently economical plant with potent ethnobotanical benefits hinged on the essential oils phytochemicals is faced with diverse extraction challenges; thus, improvement in the extraction and quantification techniques is key to the harvest of pure yields of lemon grass essential oils.
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Turchetti, Giovanni, and Diana De Santis. "Hydrolates: Characteristics, Properties, and Potential Uses in the Food Industry." In New Findings from Natural Substances, 183–210. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815051421122010011.
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Hydrodistillation is a traditional method that has long been used to extract essential oils and hydrolates from plant matrices known to be rich in bioactive compounds. The use of water as a solvent in the process does not require the recovery of the solvent, with a saving in terms of time, energy, loss of volatile compounds, and a lower environmental impact. Very often, and for some matrices rich in essential oils, hydrolates are considered a by-product. They contain a variety of organic phytochemicals which can be extracted and used for other medicinal, cosmetic, dermatological, and commercial applications. Extracts derived from different plant parts, such as leaves, roots, stems, bulbs, fruits, flowers, and seeds, vary in characteristics and composition. Many other variables can influence the composition of hydrolates, such as geographic location, cultivation techniques, seasonality, and process variations. Plant hydrolates contain significant quantities of bio compounds with different activities: they can be used as antimicrobial, sanitizing, or antitumor agents for the control of weeds, nematodes, larvae, and various parasites affecting crops of agronomic interest, as well as anesthetizing in aquaculture. These extracts are also used in aromatherapy or as components in cosmetic formulations. The hydrolate represents a matrix of considerable interest due to the greater ease of diffusion on specific substrates and the lower toxicity compared to essential oil.
Conference papers on the topic "Hydrodistillation"
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"Supercritical Fluid Extraction and Hydrodistillation of Cleosia Argentea Essential Oil." In International Conference on Advances in Agricultural, Biological & Environmental Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2014. http://dx.doi.org/10.15242/iicbe.c1014109.
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Larkeche, Ouassila, Ahmed Zermane, Abedeslam Hassen Meniai, Hafida Boubadja, Souad Boulbair, and Hayat Kouis. "Experimental study of hydrodistillation extraction essential oil from Rosemary leaves." In 2017 8th International Renewable Energy Congress (IREC). IEEE, 2017. http://dx.doi.org/10.1109/irec.2017.7926038.
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Miljković, Vojkan, Marko Mladenović, and Niko Radulović. "BOVOLID – CHEMICAL COMPOUND FOR EVALUATING THE AGE OF WHITE MULBERRY LEAVES." In 1st International Symposium on Biotechnology. University of Kragujevac, Faculty of Agronomy, 2023. http://dx.doi.org/10.46793/sbt28.479m.
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Tree Morus species are growing in Serbia, Morus alba, Morus nigra and Morus rubra. Morus leaves are used in traditional medicine, and after collecting them, drying is most practiced method for preservation. Hydrodistillation of 2 fresh and 2 dryed for one month samples of Morus alba and nigraleaves was done by using the original Clevenger-type apparatus. The composition of essential oils was determined by GC-MS aparathus. The yields of essential oils obtained by hydrodistillation were 0.0011 and 0.0012% from the dried plant material (MNL-2 and MAL-2, respectively) and 0.0080% (w/w) from both samples of fresh leaves (MNL-1 and MAL-1). The predominant constituent in all essential oils was trans-phytol. Only the essential oil obtained from dried M. alba leaves contained the chemical compound bovolid (8.1%). Based on results, bovolid can be used as indicator for evaluating the age of white mulberry leaves.
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Ekapratiwi, Yasmin, Ade Rachmawati, Egi Agustian, Rizna Triana Dewi, and Anny Sulaswatty. "Evaluation of antibacterial activity of ultrasound-assisted hydrodistillation of Amomum cardamomum oil." In 2ND INTERNATIONAL CONFERENCE ON ENERGETICS, CIVIL AND AGRICULTURAL ENGINEERING 2021 (ICECAE 2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0110577.
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Kusuma, Heri Septya, and Mahfud Mahfud. "Chemical composition of essential oil of Indonesia sandalwood extracted by microwave-assisted hydrodistillation." In PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION – SRI2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4958484.
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PINTO, R. H. H., M. C. R. FERREIRA, W. A. COSTA, R. M. CORDEIRO, E. H. A. ANDRADE, and R. N. CARVALHO JUNIOR. "CHEMICAL CHARACTERIZATION OF PERPÉTUA-ROXA (Centratherum punctatum Cass.) ESSENTIAL OIL EXTRACTED BY HYDRODISTILLATION." In XXII Congresso Brasileiro de Engenharia Química. São Paulo: Editora Blucher, 2018. http://dx.doi.org/10.5151/cobeq2018-pt.0756.
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Karoutzou, O., D. Michailidis, A. Argyropoulou, N. Adamopoulos, and S. Mitakou. "Development of innovative products based on hydrodistillation by-products of plants of the Greek flora." In GA – 69th Annual Meeting 2021, Virtual conference. Georg Thieme Verlag, 2021. http://dx.doi.org/10.1055/s-0041-1736848.
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Zlatic, Nenad, Vladimir Mihailovic, Gorica Đelic, Marija Ljesevic, Vladimir Beskoski, and Milan Stankovic. "VARIJABILNOST SESKVITERPENA ETARSKIH ULJA VRSTE TEUCRIUM MONTANUM L." In XXVI savetovanje o biotehnologiji sa međunarodnim učešćem. University of Kragujevac, Faculty of Agronomy, 2021. http://dx.doi.org/10.46793/sbt26.453z.
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The aim of this study is to determine the qualitative variability and relative presence of sesquiterpene hydrocarbons in essential oils samples of Teucrium montanum L. collected from two different substrate types. Four samples of essential oils from serpentinite and four from calcareous were obtained by the method of hydrodistillation from aboveground plant parts. Based on the results, it was shown that populations from serpentinite habitats synthesize 2 times more sesquiterpenes than from calcareous ones, while the compound 6-epi-β-cubeben was detected only in populations from calcareous. Edaphic characteristics of habitats affect the qualitative composition and relative presence of sesquiterpenes in essential oils, which has a significant application in biotechnology.
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Kaya, Durmuş Alpaslan, and Musa Türkmen. "Comparing of Eucalyptus (Eucalyptus camaldulensis and Eucalyptus grandis) Essential Oil Compositions Growing in Hatay Ecological Conditions." In The 9th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2022. http://dx.doi.org/10.24264/icams-2022.ii.14.
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Essential oils obtained by hydrodistillation of Eucalyptus camaldulensis and Eucalyptus grandis from Hatay (Turkey), were analyzed by GC/MS. The total ratio of twenty-three components in Eucalyptus camaldulensis volatile components with 98.15%. This ratio is seen as forty-seven components and 99.66% in Eucalyptus grandis. Eucalyptol, limonene and α-pinene were identified as the main components of the essential oils of Eucalyptus camaldulensis. Cymene, α-pinene, isoborneol, trans-pinocarveol and eucalyptol were identified as the main components of the essential oils of Eucalyptus grandis. When compare the components of E. camaldulensis and E. grandis essential oils, the main component was determined as eucalyptol with 74.11% and cymene with 31.67% respectively.
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Kasuan, Nurhani, Megawati Yunus, Mohd Hezri Fazalul Rahiman, Sharipah Ruzaina S. Aris, and Mohd Nasir Taib. "Essential oil composition of Kaffir lime: Comparative analysis between controlled steam distillation and hydrodistillation extraction process." In 2009 IEEE Student Conference on Research and Development (SCOReD). IEEE, 2009. http://dx.doi.org/10.1109/scored.2009.5442958.
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