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Dissertations / Theses on the topic 'Essential oils'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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1

Slaughter, Leeann L. "Antilisterial Characteristics of Volatile Essential Oils." UKnowledge, 2013. http://uknowledge.uky.edu/animalsci_etds/16.

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This study explored the in vitro and in situ antilisterial inhibitory activity of 16 essential oils during indirect exposure: Spanish Basil oil (Ocimum basilicum), Bay oil (Pimenta racemosa), Italian Bergamot oil (Citrus bergamia), Roman Chamomile oil (Anthemis nobilis), Sir Lanka Cinnamon oil (Cinnamomum zeylanicum), Citral, Clove Bud oil (Syzygium aromaticum), Cumin Seed oil (cuminum cyminum), Eucalyptus oil (Eucalyptus globulus), Eugenol, Geranium extract (Pelargonium graveolens), Marjoram oil (Origanum majorana), Neroli extract (Citrus aurantium), Peppermint oil (Mentha piperita L.), Rosem
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2

Gersbach, Paul Vincent, University of Western Sydney, and of Science Technology and Environment College. "Aspects of essential oil secretion in vascular plants." THESIS_CSTE_XXX_Gersbach_P.xml, 2001. http://handle.uws.edu.au:8081/1959.7/775.

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A study of some aspects of essential oil secretion in plants was conducted. The first part of the study involved analysis of the volatile terpenoid content and composition of leaf extracts from a range of Australian native plants by gas chromatography and mass spectrometry. Secretory structures were studied by several microscopic imaging techniques including conventional bright and dark field optical microscopy, confocal microscopy, and scanning (SEM) and transmission (TEM) electron microscopy. Three methods were employed for scanning electron microscopy. Sample material was prepared for conve
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3

Rahman, S. M. Ashrafur. "Experimental investigation of essential oils in a diesel engine." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/121763/2/__qut.edu.au_Documents_StaffHome_StaffGroupH%24_halla_Desktop_S.%20M.%20Ashrafur%20Rahman%20Thesis.pdf.

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The potential use of waste stream essential oils were evaluated as fuel supplements for diesel vehicle/machinery used by producers of these oils. Orange, eucalyptus and tea tree oils were selected; which are native to and/or extensively cultivated throughout Australia. These essential oils are mainly used in the medical and natural therapy sector as well as fragrance and flavouring industry. The high quality of the final product leads to a significant very low value waste stream. Engine performance and emissions evaluation showed that essential oils are comparable to diesel fuel. Their use wil
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4

Mam, Rashid Sirwan Ahmed. "Encapsulation of essential oils in food grade materials." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/15702/.

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The objective of this study was firstly to assess the ability of liquid skimmed milk in combination with different concentrations of maltodextrin (MD) to emulsify 5% w/w thyme essential oils (EOs). Secondly, to analyse the chemical composition of the used thyme EOs and further examine the physical properties of some EOs components such as solubility, surface activity and partitioning coefficient. Moreover, assessing the antibacterial activity of free and encapsulated EOs in vivo and in vitro mediums. From the results of thyme EOs analysis, 29 compounds were identified that containing different
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5

Low, Wan Li. "Lipsome encapsulated antimicrobial metal ions and essential oils." Thesis, University of Wolverhampton, 2012. http://hdl.handle.net/2436/219012.

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This study investigates the feasibility of using TTO and Ag+ alone and in combination either as free or liposome encapsulated agents. Based on the minimum lethal concentration (MLC), the fractional lethal concentration index (FLCI) showed that treatment with unencapsulated combinations of TTO and Ag+ exerted a synergistic effect against P. aeruginosa (FLCI = 0.263) and indifferent effects against S. aureus and C. albicans (0.663 and 0.880, respectively). Using polyvinyl alcohol (PVA) emulsified agents in combination, showed synergistic effects against P. aeruginosa and S. aureus (FLCI = 0.325
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6

Nunes, Maria João Correia. "Evaluation of minimal inhibitory concentrations of essential oils." Master's thesis, ISA/UTL, 2012. http://hdl.handle.net/10400.5/5268.

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Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia<br>Essential oils of Origanum vulgare, Salvia lavandulaefolia, Salvia officinalis, Salvia sclarea and Rosmarinus officinalis were evaluated for their antimicrobial activity against Listeria monocytogenes, Pseudomonas aeruginosa and Yarrowia lipolytica using the microdilution method. The most promising essential oil showed to be the Origunum vulgare with an inhibition range of 0,006 to 0,352% (v/v) for the yeasts and from 0,003 to 0,011% (v/v) for the bacteria species, with no significant differences between Gram positive
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7

Бабенко, Наталія Олександрівна. "Aromatherapy: essential oils as an alternative to treatment." Thesis, Київський національний університет технологій та дизайну, 2020. https://er.knutd.edu.ua/handle/123456789/15260.

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8

Bruno, Flores Josue Manuel, García Alejandra Gabriela Castillo, Yañez Natalie Escudero, Bonilla Camila Jimena Hernández, and Villacorta Erika Valeria Lopez. "Make it essential." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626527.

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“Make it essential” es el nombre de nuestro proyecto de negocio que plantea poner fin a una necesidad y problemática que permanece en la sociedad y que, en los últimos años, se ha incrementado de manera significativa en los sectores de educación y laboral como es el estrés, a través de una solución innovadora que les permita llevar una vida más plena. El proyecto se basa en la venta de joyas difusoras de aceites esenciales que cumplen el propósito de aliviar el estrés que es originado por los estudios, el trabajo y también problemas por los que pueda estar pasando la persona. A lo largo de
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9

Turek, Claudia [Verfasser]. "Investigations into the Stability of Essential Oils / Claudia Turek." Aachen : Shaker, 2013. http://d-nb.info/1051574048/34.

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10

Andersson, Karin. "Mosquito repellency of essential oils derived from Lao plants." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-123717.

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Essential oils or extracts obtained from four plant species growing in Laos were tested foranti-mosquito activity in the field. Solutions of alcohol or acetone containing differentconcentrations of essential oil; 5, 10 or 19 v/v %, were prepared and tested. Mosquitoes werecollected by human baits wearing oil impregnated mosquito nets around their shanks. Thenumber of attracted mosquitoes was compared to the number attracted to positive andnegative controls, i.e., human baits wearing nets impregnated with 19 % N,N-diethyl-metatoluamide (DEET, NN-diethyl-methyl-benzamide) or untreated nets, resp
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11

Kiwanuka, Pauline. "The authentication of citrus essential oils by chromatographic methods." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390612.

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12

BALLESTEROS, LARA Jose Luis. "CHEMICAL FINGERPRINTING AND BIOACTIVITY PROFILE OF ECUADORIAN ESSENTIAL OILS." Doctoral thesis, Università degli studi di Ferrara, 2018. http://hdl.handle.net/11392/2488237.

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13

Salvesen, Gregory John. "The effects of inhaled bergamot and geranium essential oils on rat behaviour." The University of Waikato, 2009. http://hdl.handle.net/10289/2784.

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The aim of this study was to evaluate the behavioural effects of inhaled bergamot, geranium and a combination of these oils in three novelty evoked tests of anxiety. Sixty adult Hooded Rats (Rattus norvegicus), with 10 rats randomly assigned to one of the 6 test groups; three essential oil treated groups, and three control groups. The essential oil groups consisted of bergamot, geranium and a combined group, i.e. the combination of bergamot and geranium oil. The control groups consisted of the odour and vehicle control, with the anxiolytic drug diazepam as a positive control. The behaviour of
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14

Olleveant, Nicola Alaine. "Physiological and psychological effects of aromatherapy massage on critically ill patients." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275050.

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15

Riley, C. J. "Numerical modelling of supercritical fluid extraction." Thesis, Cranfield University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241841.

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16

Gersbach, Paul V. "Aspects of essential oil secretion in vascular plants /." View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20031223.143208/index.html.

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Thesis (Ph.D.) -- University of Western Sydney, 2001.<br>"This thesis is presented in fulfilment of the degree of Doctor of Philosophy in Science at the University of Western Sydney, Richmond, New South Wales, Australia" Bibliography : p. 145-163.
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17

Smith-Palmer, Mary Alison. "The antimicrobial properties of plant essential oils against foodborne pathogens." Thesis, Queen Margaret University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327082.

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18

Serra, Elisa. "A hydrogel in combination with essential oils for oral therapy." Thesis, Manchester Metropolitan University, 2018. http://e-space.mmu.ac.uk/622355/.

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Oral diseases such as periodontal diseases and oral candidiasis are significant health problems in humans. Periodontal disease is a common disease of the oral cavity and the major cause of tooth loss in adults. Four clinical forms of primary oral candidiasis are recognised, and the management of such infections is limited due to the low number of antifungal drugs available, their relatively high toxicity and the emergence of antifungal resistance. The use of hydrogels in delivery of biocides has been explored due to their biocompatibility, ease with which they can be charged with drugs, and po
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19

Azad, Mohammad Fallah, Andreas Schwiertz, and Holger F. R. Jentsch. "Adjunctive use of essential oils following scaling and root planing." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-204927.

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Background: Hitherto no study has been published on the effect of the adjunctive administration of essential oils following scaling and root planing (SRP). This study describes the effect of a mouthrinse consisting of essential oils (Cymbopogon flexuosus, Thymus zygis and Rosmarinus officinalis) following SRP by clinical and microbiological variables in patients with generalized moderate chronic periodontitis. Methods: Forty-six patients (aged 40–65 years) with moderate chronic periodontitis were randomized in a double-blind study and rinsed their oral cavity following SRP with an essential oi
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20

Pardede, Joseph Jupiter. "The separation and analysis of essential oils from wax flowers." Thesis, Pardede, Joseph Jupiter (1994) The separation and analysis of essential oils from wax flowers. PhD thesis, Murdoch University, 1994. https://researchrepository.murdoch.edu.au/id/eprint/51881/.

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The botanical genus Chamelaucium, commoiily called Geraldton wax, contains a number of species which are highly valued in the cut-flower industry. The coloured flowers and green foliage together with the fragrant odour of cuttings from Chamelaucium shrubs have contributed to the significant growth in demand (both local and export) for attractive flower arrangements. Despite the economic interest in the Chamelaucia there has been little scientific research focused on the members of this genus which is native to a small area within the state of Western Australia. Information about the taxonomy o
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21

ANTONINI, STEFANO. "Interference of Essential Oils on the Motility of Anisakis Larvae." Doctoral thesis, Università degli Studi di Camerino, 2014. http://hdl.handle.net/11581/401768.

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A variety of essential oils have been used since antiquity in the treatment of different infectious diseases. Several nematicidal compounds have been isolated from plants and some essential oils and their components have been evaluated for their nematicidal activity, such as essential oils of Pelargonium graveolens, Ocinum sanctum, Ocimum basilicum, Mentha piperita, and M. spicata and their main components (citronellol, eugenol, geraniol, and linalool). The lack of compounds for the effective treatment of anisakiasis combined with reports on the biocidal activity of different products of natur
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22

Lale, N. E. S. "Insecticidal activity of plant essential oils on Callosobruchus maculatus (F.) : (Coleoptera:Bruchidae)." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379315.

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23

Hili, Pauline. "Essential oils : antimicrobial activity and the effects on membrane lipid activity." Thesis, University of Westminster, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263926.

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24

Williams, Brittney E. "Essential Oils in Combination and Their Effect on E. coli Growth." Ohio University Art and Sciences Honors Theses / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ouashonors1524752078918456.

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25

Miller, Andrew B. "Antimicrobial and Anticancer Activity of Essential Oils from Guatemalan Medicinal Plants." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2411.

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Guatemalan medicinal plants were collected and screened for the presence of essential oils using steam distillation. Oil was found in 63 species from 24 families and was tested in tube dilution assays for activity against Escherichia coli, Staphylococcus aureus, Streptococcus mutans, Lactobacillus acidophilus and Candida albicans. Several essential oils were highly active with 20 instances of oils inhibiting the microbes at an MIC of 0.31 µl/ml. Oils were also tested against cancerous and established cell lines using a 15% (v/v) agar-media which was developed to improve essential oil solubilit
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26

Nyiramana, Lunianga Marie. "Stratégies de mise en marché des huiles essentielles québécoises /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1991. http://theses.uqac.ca.

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27

Clark, Amanda. "Melaleuca Alternifolia Concentrate (MAC): A Plant-Derived Anticancer Agent." Thesis, Griffith University, 2013. http://hdl.handle.net/10072/367678.

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Natural products historically represent a source of clinically approved drugs that have contributed significantly to anticancer drug development. In particular, essential oils represent a group of advantageous anticancer candidates as not only can they be produced in large quantities in a cost-effect manner but they also exhibit minimal toxicity. Melaleuca alternifolia Concentrate (MAC) is an extract prepared from the native Australian plant M. alternifolia (also a common source of Tea Tree Oil). Melaleuca oils are commonly used products, primarily utilised and investigated for their antimicro
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28

Oddo, Martina. "Effects of different weed control practices on soil quality in Mediterranean crops." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/90655.

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Effects of different weed control practices on soil quality in mediterranean crops This research approaches the question of weed control sustainability, from the point of view of soil quality maintenance and enhancing. A big choice of practices and products for weed control are available nowadays, but the actual definition of "sustainable practice" not always considers soil fertility. Soil processes timescale is wider than the productive, commercial and legislative ones. Also the definition of survey protocols is a process slower than the evolution of weed control methods. The faster reactio
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29

Phillips, Alicia Kyser Appel Arthur G. "Toxicity and repellency of essential oils to the German cockroach (Dictyoptera: Blattellidae)." Auburn, Ala., 2009. http://hdl.handle.net/10415/1942.

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30

Rahman, Yosra Ahmed Soltan Abd El. "Effect of tanniniferous plants and essential oils on methane emission in ruminants." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/64/64134/tde-26092012-134451/.

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Tannins and essential oils are secondary metabolites that may be used as natural modifiers of rumen fermentation to reduce the ruminants\' methane (CH4) emission. To study the application of tannin-rich plants from Egypt and Brazil, as well as essential oils that are available in international trade, three studies were conducted at Animal Nutrition Laboratory of Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, at Piracicaba, Brazil. The first study was aimed to assess the potential of tanniniferous plants prosopis (Prosopis juliflora), acacia (Acasia saligna), atriplex (Atr
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31

Jouini, Amira. "Herbicidal activity of Mediterranean essential oils and their effects on soil bioindicators." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/159914.

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[ES] Las preocupaciones ambientales y de salud han estimulado el interés en estrategias alternativas para el manejo de las malas hierbas. En todo el mundo se están haciendo esfuerzos para reducir la gran dependencia de los herbicidas sintéticos que se utilizan como principal método para el control de las plantas arvenses. Los herbicidas naturales basados en sustancias alelopáticas, como los aceites esenciales (AEs) extraídos de plantas, se han sugerido como una de las posibles alternativas para lograr un manejo sostenible de las arvenses. Por un lado, los AEs han mostrado capacidad para inhibi
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Perdones, Montero Ángela. "ANTIFUNGAL CHITOSAN-BASED FILMS AND COATINGS CONTAINING ESSENTIAL OILS FOR FRUIT APPLICATIONS." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/59413.

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[EN] Chitosan films and coatings have been obtained, by incorporating different essential oils (EO) and using different homogenization conditions of the film forming emulsions, in order to obtain antifungal materials for fruit preservation. The effect of oleic acid (OA) on the stability of the initial emulsions and on the film properties was analysed. Coatings were applied to control fungal decay in strawberries. The blending of chitosan with methylcellulose (MC) was also used in coating applications to tomato plants and fruits to prevent fungal infections. The films' functional properties as
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33

JOUINI, AMIRA. "Herbicidal activity of Mediterranean essential oils and their effects on soil bioindicators." Doctoral thesis, Università degli Studi di Palermo, 2020. http://hdl.handle.net/10447/434529.

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Environmental and health concerns caused for traditional crop protection systems have stimulated interest in alternative weed management strategies. Worldwide, efforts are being made to reduce the heavy reliance on synthetic herbicides that are used to control weeds. Natural herbicides based on allelopathic substances, such as volatile essential oils (EOs) extracted from plants, has been suggested to be one of the possible alternatives for achieving sustainable weed management. From one hand, EOs have shown ability to inhibit weeds seed germination and growth, on the other hand there is a lack
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34

Ishlak, Adel. "ALTERING THE FORMATION OF TRANS FATTY ACIDS IN CONTINUOUS CULTURES THROUGH OILS AND NATURAL DIETARY SUPPLEMENTATIONS." OpenSIUC, 2013. https://opensiuc.lib.siu.edu/dissertations/711.

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35

Lee, Pei-Hua, and 李沛鏵. "The Correlations between Aromatherapy Essential Oils and the Meridians with focus on Labiatae Essential Oils." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/12854751606276544735.

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碩士<br>臺北城市科技大學<br>運動健康與休閒所<br>101<br>The Correlations between Aromatherapy Essential Oils and the Meridians with focus on Labiatae Essential Oils Abstract There are many theories on how the essential oils affect the human meridians, without consistent empirical proofs. Therefore, this research uses consistent methods to assess the effects of Labiatae essential oils on the meridians. Eight species: thyme, clary sage, rosemary, marjoram, patchouli, spearmint, lavender, and basil, were used as the Labiatae essential oils in the experiment. The research was conducted on 80 voluntary subje
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Chun, Chen-Yen, and 陳燕君. "The Correlations between Essential Oils and Meridians with Focus on the Rutaceae Essential Oil." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/53053174080335333888.

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碩士<br>臺北城市科技大學<br>運動健康與休閒所<br>101<br>This research established the proof between the Rutaceae essential oil and human meridians. The research is conducted with consistent empirical methods on 70 subjects for data collection. The resulting analysis shows that there are significant correlations between the Rutaceae essential oils and the 12 human meridians. The experiment used 7 essential oils from the Rutaceae family of bergamot, mandarin, sweet orange, petitgrain, lemon, lime, and grape fruit. Ryodoraku machine is used to measure the values of subjects’ 12 meridians before the applications of
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SHEN, LI-YAN, and 沈立言. "STUDIES ON MICROCAPSULES OF ESSENTIAL OILS." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/82177093976608686077.

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博士<br>國立中興大學<br>食品科技研究所<br>79<br>Basil, garlic, and ginger essential oil were extracted by steam distillation, and analyzed by GC and GC-ms. The major components of basil essential oil were methyl chavicol (about 86%) and 1, 8-cineole (6%); those of garlic essential oil were diallyl disulfide (39%) and diallyl trisulfide (31%) etc.; and those of ginger essential oil were camphene (16%) and geranial (19%) etc.. In terms of charater-impact compounds, methyl chavicol which gave fragrance, sweet, fresh, and
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Karra, Eirini. "Aromatherapy and its favourite essential oils." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-306571.

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AROMATHERAPY AND ITS FAVOURITE ESSENTIAL OILS Student: Karra, E. Tutor: Marešová, H. Department of Social and Clinical Pharmacy, Faculty of Pharmacy in Hradec Králové, Charles University in Prague, Czech Republic Background: This thesis was made because I wanted to work on something different from what we are being taught at the Faculty of Pharmacy. But the topic should be near to the worlwide pharmacy practice. Nowadays many people are interested in Complementarey and Alternative Medicine (CAM). I decided to visit Dr. Marešová (a teaching practitioner at our Faculty) to ask her for a topic. S
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Chin-Hsuan, Chang, and 張雂媗. "Natural essential oils as preservatives in cosmetics." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/4ty89z.

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碩士<br>嘉南藥理大學<br>化粧品應用與管理系<br>102<br>This study from 19 kinds of essential oils antibacterial effects of werescreened, based on synergistic combinations of different essential oils, determine the appropriate combination of essential oils antimicrobial agent formulations,And microbiological testing of cosmetics preservative systems impact assessment, as well as product stability testing irritation and further evaluation. Use of paper disk-diffusion method on 19 kinds of essential oils and four commercially available, for detection of the inhibitory activity of Escherichia coli .The results showe
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Lin, Pei-Ju, and 林佩儒. "The applications of essential oils on mending acnecondition." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/99999341515534568983.

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碩士<br>嘉南藥理科技大學<br>化妝品科技研究所<br>94<br>Propionibacterium acnes (P. acnes) is one of the factors of acne. P. acnes increase by several orders of magnitude in the environment created by abnormally keratinization in the sebaceous follicle. The organism produces a variety of exocellulan enzymes and molecules with chemoattractant activity, and it has also been shown to stimulate cells of nonspeafic immune system to produce proinflammatory cytokines which initiate inflammation. Antibiotics have been widely used to treat the acne in the part. This resulted in the development of bacterial resistance. Fin
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CHEN, CHIU-WAN, and 陳秋婉. "Essential Oils Industry-A Company Management Strategy Analysis." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/drv5e7.

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碩士<br>國立雲林科技大學<br>企業管理系<br>104<br>The Taiwan's essential oil products market development and the industry competition is rapidly increasing. The competitive strategy is important to manage the essential oil industry. Cosmetics industry has low entry barriers, low investment in R&D, high value-added and unlimited business opportunities. The previous researches were mostly focused on cosmetics. However, the relevant research on essential oil products industry is rather lacking. Therefore, the research is worth studying. The purpose of this study is to discuss the subject of essential oil indu
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Sousa, Rose Marie Oliveira Ferreira de. "Plant-based pesticides: Potential of apiaceae essential oils." Doctoral thesis, 2016. http://hdl.handle.net/1822/44970.

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Tese de Doutoramento em Ciências - Especialidade em Biologia<br>The development of biopesticides follows a strong rising trend over the last two decades, and a continued growth of the global biopesticides market is forecasted. This phenomenon is largely supported by the growing awareness to environmentally friendly food production and the introduction of restrictive regulations for pesticides. In light of their multiples advantage over synthetic pesticides, biopesticides appear economical, eco-friendly and less prone to the development of resistance, and hence are expected to provide more
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(8703072), Sudip Gaire. "TOXICOLOGY OF PLANT ESSENTIAL OILS IN BED BUGS." Thesis, 2020.

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<p>Bed bugs (<i>Cimex lectularius</i> L.) are globally important human ectoparasites. Their management necessitates the use of multiple control techniques. Plant-derived essential oils are extracts from aromatic plants that represent one of the alternative control measures for bed bug control, in addition to mechanical options and synthetic pesticides. However, there is limited information available on the efficacy and toxicology of plant essential oils against bed bugs. This project was designed with the aim to provide in-depth information on efficacy, toxicology and mode-of-action of essent
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Hsu, Chih-Chieh, and 許智捷. "Effects of Essential Oils on Candida albicans Biofilms." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/41347518823595630707.

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博士<br>國立陽明大學<br>生化暨分子生物研究所<br>101<br>Biofilms are structured microbial communities in which the cells bind tightly to a surface and become embedded in a matrix of extracellular polymeric substances produced by these cells, and characteristically display a phenotype that is markedly different from that of planktonic cells. Candida albicans, the dimorphic yeast, is a major human fungal pathogen that causes both mucosal and deep tissue infections. Biofilm-associated Candida albicans infections are clinically relevant due to their high levels of resistance to traditional antifungal agents. Essenti
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De, Rapper Stephanie. "Synergistic interactions of lavender essential oil." Thesis, 2014.

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Thesis (M.Pharm.)--University of the Witwatersrand, Faculty of Health Sciences, 2013.<br>Essential oils are not only used singularly but have been used in combination for many years. There is, however, very little scientific evidence to support the claims made for combined antimicrobial efficacy. With this in mind, a study was designed to investigate the antimicrobial activity of Lavender (Lavandula angustifolia) essential oil, in combination with other essential oils with antimicrobial relevance. The micro-dilution minimum inhibitory concentration (MIC) assay was undertaken, whereby the frac
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Montgomery, K. "The effects of Roman chamomile, spike lavender, petitgrain, and rosemary essential oils on psychological, physiological, and psychophysiological processes." Thesis, 2005. https://eprints.utas.edu.au/20941/1/whole_MontgomeryKate2005_thesis.pdf.

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The overriding aim of this series of studies was to investigate the psychological, physiological, and psychophysiological effects of exposure to odours of purportedly sedative (petitgrain and Roman chamomile) and stimulant (rosemary and spike lavender) essential oils. More specifically, the purpose of these studies was to determine whether inhalation of essential oils produces reliable changes in mood, behavioural responding, physiological functioning, psychological functioning, and cognitive processing, as well as whether these changes are consistent with the supposed therapeutic effec
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Saraiva, Carla Sofia da Silva. "Bioherbicidal effect of plant aqueous extracts and essential oils." Master's thesis, 2019. http://hdl.handle.net/10400.26/28202.

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Resumo A População Mundial está a aumentar, prevendo-se 10 biliões de pessoas na terra em 2050. Para obter o maior rendimento de culturas, é crucial controlar as infestantes, pois causam uma perda da produção total anual de aproximadamente 9,7%. Durante muitos anos os herbicidas controlaram eficazmente as infestantes e sem estes a Revolução Verde não aconteceria, mas o seu uso abusivo a nível mundial, levou à emergência de infestantes resistentes a herbicidas e a elevados níveis de resíduos no solo, água e alimentos. Os Bioherbicidas podem ser uma alternativa natural aos herbicidas sintético
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Leite, Bianca. "Extraction of essential oils from vetiver (vetiveria zizanioides) grass." Thesis, 2012. http://hdl.handle.net/10413/9215.

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Vetiver grass is a viable vegetative absorbent and erosion barrier; in addition the valuable oils extracted from its roots are playing an increasing role in the perfume, food and pharmaceutical industries. The quantity and quality of oil extracted from the vetiver grass depends strongly on location of growth, and the extraction and separation techniques adopted. The aim of this research project is to evaluate whether the harvesting and extracting of essential oils from locally grown vetiver grass would be a feasible business idea, as well as, which extraction technique will give the highest yi
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CHEN, YEN-JEN, and 陳妍蓁. "Assessments of preservative efficiency of cosmetics with essential oils." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/2g3mn5.

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碩士<br>嘉南藥理科技大學<br>化妝品科技研究所<br>99<br>Microorganism contamination is one of the most important problems in cosmetic industry, and microorganism lead to product degradation or, in the case of pathogens, constitute a risk for the health of the consumer. Therefore, preservatives inhibiting the growth of microorganisms are added to a product, but allergies after using cosmetics occur more and more frequently, which is quite often associated with the presence of synthetic preservatives. For this reason, this study was to verify the antimicrobial activity of essential oils as the components of preserv
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Chen, Chih-Yu, and 陳治宇. "Studies on the essential oils in some Formosan seaweeds." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/20464189246250216073.

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