Relevant bibliographies by topics / Pectic substance

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Pectic substance'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Pectic substance"

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Hildén, Lars, Jing Zhang, Erik Persson, Gunnar Johansson, and Jonas Brändström. "Distribution and characterisation of discolouring substances in Norway spruce (Picea abies L. Karst.) pulp wood stored under water sprinkling." Holzforschung 60, no. 1 (January 1, 2006): 93–98. http://dx.doi.org/10.1515/hf.2006.016.

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Abstract Discolouration of wood raw material during wet storage has a notable negative effect on the quality of the final product. In this study, fluorescence microscopy was used to investigate the spatial distribution of discolouring substances in water-sprinkled Norway spruce pulpwood. Water-sprinkled wood was characterised by the presence of discolouring substances on the pit membranes of wood cells. In vitro model studies on the interaction between a model bark substance (tannic acid) and torus constituents support the hypothesis that pectic structures facilitate the allocation of bark substances on pit membranes. Applied pectinase or tannase could not remove the discolouring substances from pit membranes. Manganese peroxidase had a minor but documented effect. The effect of manganese peroxidase, as well as HCl/vanillin labelling, indicated that the discolouring substance may be condensed tannins.
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KANEKO, Kentaro, Kiyoko OTA, Takeshi SUMINO, and Yasuhiko MAEDA. "Effect of anions on binding between calcium and pectic substance." Nippon Eiyo Shokuryo Gakkaishi 42, no. 5 (1989): 391–95. http://dx.doi.org/10.4327/jsnfs.42.391.

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Nuzzo, Domenico, Pasquale Picone, Costanza Giardina, Miriana Scordino, Giuseppa Mudò, Mario Pagliaro, Antonino Scurria, et al. "New Neuroprotective Effect of Lemon IntegroPectin on Neuronal Cellular Model." Antioxidants 10, no. 5 (April 25, 2021): 669. http://dx.doi.org/10.3390/antiox10050669.

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Lemon IntegroPectin obtained via hydrodynamic cavitation of organic lemon processing waste in water shows significant neuroprotective activity in vitro, as first reported in this study investigating the effects of both lemon IntegroPectin and commercial citrus pectin on cell viability, cell morphology, reactive oxygen species (ROS) production, and mitochondria perturbation induced by treatment of neuronal SH-SY5Y human cells with H2O2. Mediated by ROS, including H2O2 and its derivatives, oxidative stress alters numerous cellular processes, such as mitochondrial regulation and cell signaling, propagating cellular injury that leads to incurable neurodegenerative diseases. These results, and the absence of toxicity of this new pectic substance rich in adsorbed flavonoids and terpenes, suggest further studies to investigate its activity in preventing, retarding, or even curing neurological diseases.
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Fleskova, D., G. Nosalova, Sudipta Saha, Shruti Bandyopadhyay, Ray Bimalendu, and L. Jurecek. "Antitussive Effect of a Pectic Arabinogalactans Isolated from Adhatoda Vasica in Vivo Experimental Conditions." Acta Medica Martiniana 12, Supplement-1 (February 1, 2012): 31–37. http://dx.doi.org/10.2478/v10201-011-0025-5.

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Antitussive Effect of a Pectic Arabinogalactans Isolated from Adhatoda Vasica in Vivo Experimental Conditions The herbal polysaccharides have been the subject of many studies for a very long time, especially because of their physical properties, chemical and physical modification and application. Adhatoda vasica has also been traditionally included in preparations for the relief of cough, asthma and bronchitis recommended by Ayurvedic physicians for the management of various types of respiratory disorders. In this study, we have focused on activities of pectic arabinogalactans isolated from Adhatoda vasica on experimentally induced cough reflex and the changes of specific airway resistance in vivo conditions. The substance from leaves of Adhatoda vasica was marked as P-601 and the substance from stem bark of this shrub as P-602. The aim of presented study was to compare the antitussive activity of isolated arabinogalactans with cough suppressive activity of codeine ("positive" control) and effect acquired after application of water for injection ("negative" control). Conscious male Trik guinea pigs (200-350g) were exposed to citric acid aerosol. Peroral administration of these substances in a dose of 50 mg.kg-1 body weight decreased the number of citric acid induced cough efforts in guinea pigs more effectively than codeine. They did not induce any significant changes in the values of specific airway resistance and did not provoke any observable adverse effects. Our test results confirmed that polysaccharides isolated from Adhatoda vasica in vivo conditions have expressive antitussive effect compared with the oldest and the most effective cough suppressive agent - the codeine. The positive thing is the studied substances, despite strong supressive activity, did not induced any adverse side effects.
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KATO, NORIKO (HYAKUMOTO), AI TERAMOTO, and MICHIKO FUCHIGAMI. "Pectic Substance Degradation and Texture of Carrots as Affected by Pressurization." Journal of Food Science 62, no. 2 (March 1997): 359–62. http://dx.doi.org/10.1111/j.1365-2621.1997.tb04001.x.

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Cserjési, Petra, Katalin Bélafi-Bakó, Zsófia Csanádi, Sándor Beszédes, and Cecilia Hodúr. "Simultaneous recovery of pectin and colorants from solid agro-wastes formed in processing of colorful berries." Progress in Agricultural Engineering Sciences 7, no. 1 (January 1, 2011): 65–80. http://dx.doi.org/10.1556/progress.7.2011.5.

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Extraction of pectic substances from solid agro-wastes and the application of recovered pectin in the food, pharmaceutical and cosmetic industry can significantly contribute to a more economic and environmentally sound agro-industrial production. Thus investigation of the physicochemical properties of extracted pectic substances seems important not only from human health preservation considerations, but their advantageous properties can be confirmed for the possible manufacturers, potential processing, as well. Therefore, in this work pectic substances were extracted from red currant, black currant, raspberry, blackberry and elderberry press residues by hot water and the composition, antioxidant activity, total phenol, anthocyanin content and the color coordinates of pectins were determined. The results show that the pectin colors fall in the range between reddish purple (black currant and elderberry) and yellow (citrus and apple). Moreover some of the pectins in a powder form have different color coordinates than in the form of aqueous solutions or gels. This might be very important when the pectins are selected for different production processes. The anthocyanin content of pectin preparations is lower than the values of fruit juices. It can be concluded that the colorants found in pectin preparations belong to the group of phenolics and have adequate antioxidant capacity, which is extremely beneficial for human health. As a summary it was concluded that the investigated pectins can be easily extracted and successfully used as natural colorants or antioxidants since they have adequate antioxidant activity, total phenol and anthocyanin content and suitable color coordinates.
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Hirose, Katsutoshi, Yasutaka Kosuge, Toshihiko Otomatsu, Keiichiro Endo, and Koji Hasegawa. "Preparation of a growth-promoting substance, lepidimoic acid, from okra pectic polysaccharide." Tetrahedron Letters 44, no. 10 (March 2003): 2171–73. http://dx.doi.org/10.1016/s0040-4039(03)00153-9.

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Pedrolli, Danielle Biscaro, and Eleonora Cano Carmona. "Purification and Characterization of a Unique Pectin Lyase from Aspergillus giganteus Able to Release Unsaturated Monogalacturonate during Pectin Degradation." Enzyme Research 2014 (December 31, 2014): 1–7. http://dx.doi.org/10.1155/2014/353915.

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A pectin lyase, named PLIII, was purified to homogeneity from the culture filtrate of Aspergillus giganteus grown in submerged culture containing orange peel waste as carbon source. PLIII was able to digest apple pectin and citrus pectins with different degrees of methyl esterification. Interestingly, the PLIII activity was stimulated in the presence of some divalent cations including Pb2+ and was not significantly affected by Hg2+. Like other pectin lyases, PLIII is stimulated by but is not dependent on Ca2+. The main soluble product released during the degradation of pectic substances promoted by the PLIII is compatible with an unsaturated monogalacturonate. PLIII is a unique enzyme able to release unsaturated monogalacturonate as the only soluble product during the degradation of pectic substances; therefore, PLIII was classified as an exo-pectin lyase. To our knowledge, this is the first characterization of an exo-pectin lyase. The PLIII described in this work is potentially useful for ethanol production from pectin-rich biomass, besides other common applications for alkaline pectinases like preparation of textile fibers, coffee and tea fermentation, vegetable oil extraction, and the treatment of pulp in papermaking.
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Stratilová, Eva, Emília Breierová, Renáta Vadkertiová, Eva Machová, Anna Malovíková, and Elena Sláviková. "The adaptability of the methylotrophic yeast Candida boidinii on media containing pectic substances." Canadian Journal of Microbiology 44, no. 2 (February 1, 1998): 116–20. http://dx.doi.org/10.1139/w97-142.

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The methylotrophic yeast Candida boidinii is able to utilize pectic substances as the only carbon source. The primary utilization of methanol released from pectin is followed by adaptation to pectate medium. The duration of activation of a secondary pathway was critical for survival of yeast in the absence of other carbon sources. The utilization of pectin-containing media is associated with the production of pectic enzymes. The main polygalacturonase activities were found within the upper layer of the cell wall as shown by the method of gradual ultrasonication.Key words: pectic substances, pectic enzymes, pectin utilization, Candida boidinii, ultrasound.
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Przeszlakowska, Maria. "Chromatograficzna analiza substancji pektynowych źdźbła zbóż [Chromatographic analysis of pectic substances of the corn culms]." Acta Agrobotanica 26, no. 1 (2015): 115–22. http://dx.doi.org/10.5586/aa.1973.009.

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The Chromatographic analysis of the various fractions of pec'tic substances of the wheat, barley and rye culms has been carried out. The content of pectic substances in various fractions was also determined, as well as the quantity of ash and calcium (per cent by dry weight).
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Dissertations / Theses on the topic "Pectic substance"

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Faraj, K. A. "A study of pectic substances and their enzymic degradation." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372091.

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Rihouey, Christophe. "Rôles des composés pectiques dans le développement des jeunes plantes de lin." Rouen, 1994. http://www.theses.fr/1994ROUES059.

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L'allongement de l'hypocotyle de lin résulte de la sommation des élongations des cellules épidermiques. Après 3 jours de culture à l'obscurité, les parois des cellules de l'hypocotyle sont très déformables. L'extensiométrie montre la nature plastique et élastique de la déformation. Les propriétés mécaniques de déformation des parois sont très diminuées quand l'élongation cellulaire est inhibée par la lumière. Même s'il n'y a pas d'évolution significative des surfaces et des compositions globales pariétales pendant la croissance, les liaisons des pectines dans les parois sont modifiées. Après 3 jours de germination à l'obscurité, les trois-quarts des molécules extraites par l'eau bouillante ou le chélateur du calcium CDTA,Na2 sont enchevêtrés. Ces polysaccharides sont majoritairement constitués d'oses neutres contenant des séquences riches en acides galacturoniques neutralisés par le magnésium. Le quart restant, lié de façon covalente et/ou ionique est un mélange de polysaccharides neutres, de rhamnogalacturonanes de type I intensément acétyles et de courts homogalacturonanes non linéaires. Ces polyanions neutralisés par le calcium in vivo présentent une faible affinité pour le calcium in vitro et réagissent avec le rouge de ruthénium et l'hydroxylamine ferrique. Quatre jours après repiquage sur milieu liquide ionique et transfert à la lumière continue, 90% des composés pectiques pariétaux appartiennent aux familles suivantes: 1) des rhamnogalacturonanes de type I porteurs de chaînes latérales arabinanes et galactanes liés de façon covalente ; 2) des acides polygalacturoniques liés aux parois par des ponts calcium localisés principalement dans l'épiderme ; 3) des rhamnogalacturonanes de type I en continuité avec des homogalacturonanes probablement non linéaires neutralisés par le magnésium in vivo. Ces polymères sont moins acétyles que les molécules de composition similaire après trois jours de croissance à l'obscurité
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Jardine, William Gordon. "Pectic substances in the plant cell wall and their role in potato processing." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394923.

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Miesle, Terrence J. "The modification by calcium chloride of the firmness and pectic substances of highbush blueberry fruit." Connect to resource, 1991. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1260552870.

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Lo, Chun-Min. "The effect of blanching and freezing on the distribution and changes of pectic substances in carrots /." free to MU campus, to others for purchase, 2000. http://wwwlib.umi.com/cr/mo/fullcit?p9999306.

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Lin, Ben-lin. "Composition of pectic substances in Selva strawberry (Fragaria x ananassa Duch.)." Thesis, 1986. http://hdl.handle.net/1957/27214.

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Pectic substances in the cell wall have long thought to be responsible for the textural changes in fruit during ripening and senescence. Compositional variation within the pectic macromolecules could affect the external characteristics of the fruit. Strawberries undergo adverse quality changes such as softening and juice loss after freezing and subsequent thawing. To obtain a desirable cultivar that retains sound textural qualities after processing has long been an objective of both strawberry breeders and food processors. The fruit of Selva is exceptionally firm and some may consider it to be too firm. The purpose of this study was to investigate the compositional factors that would account for the unusual textural qualities of the Selva strawberry. Two major Oregon-grown commercial cultivars, Totem and Benton, were also included to facilitate comparisons between pectic substances and textural profiles of strawberry fruits. Fruit firmness was measured by the resistance of berry halves to shear and the amount of juice released after thawing. Very firm characteristic of Selva fruit was documented in that the shear value of thawed Selva was equal to fresh Totems and even greater than that of fresh Bentons. Juice-release after thawing was lowest in Selva samples. The quantity of acetone-insoluble solids obtained from freeze-dried powders of strawberry fruits was high for Selva and Benton, and low for Totem. Selva contained higher amounts of total soluble polyuronides and lower quantities of hemicellulose fraction as compared to Totem and Benton. Elution profiles of water-soluble polyuronides and chelator-soluble polyuronides from DEAE ion-exchange chromatography showed that Selva samples had a longer retention time and wider peak distribution, suggesting that its pectin species were of higher molecular weight and/or charge than Totem or Benton samples. The elution profile of ripe Selva was similar to that of underripe Totem and Benton. Ratios of uronic acid to rhamnose, indicating the extent of kinking and branching, were high for Selva and Totem in the water-soluble fraction and for Selva in the chelator-soluble fraction. Arabinose and galactose levels were relatively high in Selva base soluble polysaccharides, indicating that an arabinogalactan may be present in the hemicellulose fraction. This arabinogalactan may play a role in connecting the rhamnogalactan to the glycoprotein in the cell wall.
Graduation date: 1987
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Books on the topic "Pectic substance"

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Lin, Ben-lin. Composition of pectic substances in Selva strawberry (Fragaria x ananassa Duch.). 1986.

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The World Market for Pectic Substances, Pectinates, and Pectates: A 2004 Global Trade Perspective. Icon Group International, Inc., 2005.

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Parker, Philip M. The World Market for Pectic Substances, Pectinates, and Pectates: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Pectic Substances, Pectinates, and Pectates in United States. ICON Group International, Inc., 2006.

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Book chapters on the topic "Pectic substance"

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Deuel, H., and E. Stutz. "Pectic Substances and Pectic Enzymes." In Advances in Enzymology - and Related Areas of Molecular Biology, 341–82. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/9780470122655.ch11.

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Huisman, M. M. H., H. A. Schols, and A. G. J. Voragen. "Pectic Substances from Soybean Cell Walls Distinguish Themselves from other Plant Cell Walls Pectins." In Advances in Pectin and Pectinase Research, 159–68. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0331-4_12.

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Lutz, M. V., R. Oechslin, and R. Amadò. "Structural features of pectic substances from hemicellulose extracts of apples." In Advances in Pectin and Pectinase Research, 137–45. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0331-4_10.

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Yen, Gow-Chin, and Hsin-Tang Lin. "High Pressure and Heat Treatments Effects on Pectic Substances in Guava Juice." In Advances in Experimental Medicine and Biology, 81–90. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4899-1925-0_8.

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Dézert, M. H., P. Viallier, and D. Wattiez. "The Control of an Enzymatic Treatment on Linen Fabrics To Eliminate Pectic Substances." In ACS Symposium Series, 262–68. Washington, DC: American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1998-0687.ch021.

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Voragen, A. G. J., H. A. Schols, H. A. I. Siliha, and W. Pilnik. "Enzymic Lysis of Pectic Substances in Cell Walls: Some Implications for Fruit Juice Technology." In ACS Symposium Series, 230–47. Washington, DC: American Chemical Society, 1986. http://dx.doi.org/10.1021/bk-1986-0310.ch018.

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Manunza, B., S. Deiana, and C. Gessa. "Molecular dynamics of pectic substances." In Theoretical and Computational Chemistry, 899–932. Elsevier, 1999. http://dx.doi.org/10.1016/s1380-7323(99)80055-7.

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Wechsler, Daniel E., Georg R. Strasser, and Renato Amadò. "Structural features of pectic substances during growth and ripening of apples." In Progress in Biotechnology, 651–56. Elsevier, 1996. http://dx.doi.org/10.1016/s0921-0423(96)80299-1.

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Medjekal, Samir, and Mouloud Ghadbane. "Sheep Digestive Physiology and Constituents of Feeds." In Sheep Farming - An Approach to Feed, Growth and Health. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.92054.

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Sheep have a gastrointestinal tract similar to that of other ruminants. Their stomach is made up of four digestive organs: the rumen, the reticulum, the omasum and the abomasum. The rumen plays a role in storing ingested foods, which are fermented by a complex anaerobic rumen microbiota population with different types of interactions, positive or negative, that can occur between their microbial populations. Sheep feeding is largely based on the use of natural or cultivated fodder, which is exploited in green by grazing during the growth period of the grass and in the form of fodder preserved during the winter period. Ruminant foods are essentially of plant origin, and their constituents belong to two types of structures: intracellular constituents and cell wall components. Cellular carbohydrates play a role of metabolites or energy reserves; soluble carbohydrates account for less than 10% dry matter (DM) of foods. The plant cell wall is multi-layered and consists of primary wall and secondary wall. Fundamentally, the walls are deposited at an early stage of growth. A central blade forms the common boundary layer between two adjacent cells and occupies the location of the cell plate. Most of the plant cell walls consist of polysaccharides (cellulose, hemicellulose and pectic substances) and lignin, these constituents being highly polymerized, as well as proteins and tannins.
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Xuan Hoan, Nguyen, Le Thi Hong Anh, Duong Hong Quan, Dang Xuan Cuong, Hoang Thai Ha, Nguyen Thi Thao Minh, Dao Trong Hieu, Nguyen Dinh Thuat, Pham Duc Thinh, and Dang Thi Thanh Tuyen. "Functional-Antioxidant Food." In Functional Foods [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96619.

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Nowadays, people face many different dangers, such as stress, unsafety food, and environmental pollution, but not everyone suffers. Meanwhile, free radicals are the biggest threat for humans because they lead to over 80 different diseases composed of aging. Free radicals can only be eliminated or minimized with antioxidant foods or antioxidants. The chapter on the functional-antioxidant food presents the antioxidant functional food concept, the classification, the structure, and the extraction process of antioxidant ingredients. Various antioxidant substances such as protein (collagen), polysaccharides (fucoidans, alginates, glucosamines, inulins, laminarins, ulvans, and pectins), and secondary metabolites (polyphenols (phlorotannins, lignins, polyphenols), alkaloids, and flavonoids) also present. The production technology, the mechanism, the opportunity, and the challenge of antioxidants functional food also present in the current chapter. The current chapter also gives the production process of functional-antioxidant food composed of the capsule, the tablet, tube, the pills, the powder, and the effervescent tablet.
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Conference papers on the topic "Pectic substance"

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Krasnoshtanova, Alla, and Anastasiya Bezyeva. "DETERMINATION OF THE OPTIMAL CONCENTRATIONS OF PECTIN AND CALCIUM CHLORIDE FOR THE SYNTHESIS OF CHITOSAN-PECTIN MICROPARTICLES." In GEOLINKS Conference Proceedings. Saima Consult Ltd, 2021. http://dx.doi.org/10.32008/geolinks2021/b1/v3/09.

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"The oral route of drug inclusion is the most convenient for the patient. In addition to ease of use, this method of drug inclusion has such advantages as non-invasiveness of inclusion, absence of complications during injection; comparative safety for the organism due to the passage of the active substance and auxiliary compounds through the gastrointestinal tract; the possibility of introducing larger doses of the drug at one time. However, despite the obvious advantages, the oral route of inclusion has a number of significant disadvantages that significantly limit its use for a number of drugs. Among them are: relatively slow therapeutic action of the drug with this route of inclusion; the aggressive effect of a number of drugs (for example, antibiotics) on the gastrointestinal tract; low bioavailability of a number of substances (especially high molecular weight hydrophilic compounds), caused by poor permeability of the intestinal epithelium for hydrophilic and large molecules, as well as enzymatic and chemical degradation of the active substance in the gastrointestinal tract. There are various approaches used in the development of oral drug delivery systems. In particular, for the targeted delivery of drugs, it is proposed to use nano- and microcapsules with mucoadhesive properties. Among the polymers used for the synthesis of these microparticles, it is preferable to use pH-dependent, gelable biopolymers that change their structure depending on the acidity of the environment. Microcapsules obtained from compounds with the above properties are capable of protecting the active substance (or from the active substance) in the stomach environment and ensuring its release in the intestine. These properties are possessed by such polysaccharides as alginate, pectin, carrageenan, xylan, etc. The listed biopolymers are non-toxic, biocompatible, and biodegradable, which makes microparticles containing these polysaccharides promising as oral drug delivery systems. To impart mucoadhesive properties to nanoparticles, complexes of the listed polymers with chitosan are used. In this research, pectin, a polysaccharide formed mainly by residues of galacturonic acid, was used as a structural polymer. The concentrations of substances in the initial solutions were selected that were optimal for the synthesis of microcapsules. The main parameters for evaluating the resulting microparticles were the size of the capsules (less than 1 μm for oral inclusion), the zeta-potential, showing the tendency of the microparticles to stick together, and the completeness of the binding of the microparticles to chitosan. It was found that the optimal solutions for the synthesis of microparticles are: 15.7 ml of a solution of pectin 0.093% by weight, 3.3 ml of a solution of chitosan 0.07% by weight and 1.0 ml of a solution of CaCl2 20 mM. The diameter of the microparticles obtained by this method was 700-800 nm, and the value of their zetta-potential, equal to - (34 ± 3) mV, does not cross the particle adhesion threshold. It was also found that the synthesis of microparticles at these concentrations of calcium chloride provides the most complete binding of chitosan to their surface, which increases the mucoadhesive properties of microparticles."
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Limareva, Natalia, Lyudmila Donchenko, and Lyudmila Vlaschik. "Comparative Evaluation of Properties of Pectin Substances in Pomace of Grape Varieties for Development of Functional Foods." In IV International Scientific and Practical Conference 'Anthropogenic Transformation of Geospace: Nature, Economy, Society' (ATG 2019). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/aer.k.200202.033.

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Hossain, Mohammad K., Mohammad R. Karim, Mahmudur R. Chowdhury, Muhammad A. Imam, Mahesh Hosur, Shaik Jeelani, and Ramsis Farag. "Tensile Properties Evaluation of Chemically Treated/Untreated Single Sugarcane Fiber." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65664.

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Natural fiber as a reinforcing constituent can play a dominant role in the field of fiber reinforced polymer composites (FRPC) due to its eco-friendliness, renewability, abundance in nature, co2-neutrality, flexibility, low density, and low cost. Hence, sugarcane fiber can be a potential candidate to replace the synthetic FRPC. The objective of this study is to evaluate the effect of chemical treatment on the tensile properties of single sugarcane fiber. Sugarcane collected from the local market was cut into some specific length and fibers were extracted from the juicy section. These fibers were then dried in an oven to remove the moisture. Surface modification was accomplished by performing alkali treatment and neutralizing by acetic acid solution. The fiber was then rinsed with water and dried at 80°C for about twenty four hours using an oven. Untreated and treated fibers were characterized using tensile testing according to the ASTM D 3822-01 standard. Optical microscopy (OM) was employed to measure the diameter of the fiber and scanning electron microscopy (SEM) was used to evaluate the fracture morphology of failed samples. Tensile tests were carried out on the span length of 25 mm of the single fiber. The resultant data showed that maximum improvement in the tensile strength and modulus was observed to be 87% and 29%, respectively, compared to those of untreated ones due to chemical treatments using 5% NaOH solution and 2% acetic acid solution, respectively. Strain to maximum strength was enhanced by about 16% compared to that of the untreated one. A small initial weight loss was observed in the temperature ranging from 25 to 150 °C due to the evaporation of water. However, untreated fiber started to decompose at around 200 °C while treated fiber started to become decomposed at around 250°C. It might be due to the removal of non-cellulosic substances including hemicellulose, lignin, and pectin as a result of the chemical treatment. Fracture morphology of the treated fiber revealed rougher fracture surfaces compared to untreated fiber surfaces. This is an indication of more energy absorption by the treated fibers during the tensile loading.
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