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Academic literature on the topic 'Mucilage'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 July 2024

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Journal articles on the topic "Mucilage"

Otálora, María Carolina, Andrea Wilches-Torres, and Jovanny A. Gómez Castaño. "Extraction and Physicochemical Characterization of Dried Powder Mucilage from Opuntia ficus-indica Cladodes and Aloe Vera Leaves: A Comparative Study." Polymers 13, no. 11 (May 22, 2021): 1689. http://dx.doi.org/10.3390/polym13111689.

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Cactaceae and Asphodelaceae are native desert plants known for their high mucilage content, which is a polysaccharide of growing interest in the food, cosmetic, and pharmaceutical industries. In this study, powdered mucilage was obtained from cladodes of Opuntia ficus-indica (OFI) and aloe vera (AV) leaves, and their molecular, morphological, and thermal properties were investigated and compared. Additionally, their dietary fiber content was determined. Three-dimensional molecular models were calculated for both mucilages using ab initio methods. Vibrational spectra (FTIR and Raman) revealed intramolecular interactions and functional groups that were specified with the help of theoretical ab initio and semi-empirical calculations. SEM micrographs measured at magnifications of 500× and 2000× demonstrated significantly different superficial and internal morphologies between these two mucilages. Thermal analysis using DSC/TGA demonstrated superior thermal stability for the OFI mucilage. The dietary fiber content in OFI mucilage was more than double that of AV mucilage. Our results show that both dehydrated mucilages present adequate thermal and nutritional properties to be used as functional ingredients in industrial formulations; however, OFI mucilage exhibited better physicochemical and functional characteristics than AV mucilage as a raw material.

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Van Rooyen, Brandon, Maryna De Wit, Gernot Osthoff, Johan Van Niekerk, and Arno Hugo. "Effect of Native Mucilage on the Mechanical Properties of Pectin-Based and Alginate-Based Polymeric Films." Coatings 13, no. 9 (September 14, 2023): 1611. http://dx.doi.org/10.3390/coatings13091611.

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Although the benefits of polymeric blend films have been well-established, mucilages’ interaction with other commercial bio-based polymers remains greatly unknown. Pectin and alginate were used to develop such polymeric blend films, with the addition of both ‘Algerian’ and ‘Morado’ cultivar freeze-dried, native mucilage precipitate. Mucilage additions at 0.25% and 1% (w/w), together with glycerol at 60% (w/w), influenced the mechanical properties of the 5% (w/w) pectin–mucilage and 5% (w/w) alginate–mucilage blend films differently. ‘Morado’ mucilage positively influenced the pectin film tensile strength (TS) and puncture force (PF) measurements, increasing the overall film strength compared to the homopolymeric pectin films. Calcium chloride (CaCl2) treatment and increasing mucilage concentration further enhanced the composite pectin–mucilage film strength. Contrasting results were obtained for alginate blend films compared to those of pectin. Studying the scanning electron microscope (SEM) images of the microstructures of CaCl2-treated pectin–mucilage and alginate–mucilage films confirmed superior microstructural film networks for pectin–mucilage films, which resulted in enhanced film strength, where the lack of polymer compatibility, as seen with alginate–mucilage, resulted in decreased film strength. These results indicate that native mucilage should be considered when developing such blend polymeric films, as it has the potential to enhance the films’ strength and elasticity.

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Alisi, Chiara, Loretta Bacchetta, Emanuel Bojorquez, Mauro Falconieri, Serena Gagliardi, Mirta Insaurralde, Maria Fernanda Falcon Martinez, et al. "Mucilages from Different Plant Species Affect the Characteristics of Bio-Mortars for Restoration." Coatings 11, no. 1 (January 11, 2021): 75. http://dx.doi.org/10.3390/coatings11010075.

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The need for compatible materials for the preservation of cultural heritage has resulted in the revival of lime-based mortar technology and other applications. This work investigates the cohesion and integrity of lime mortars added with fresh mucilage extracted from five plants and evaluates their bioreceptivity for long-term durability. Specimens of lime mortars added with 2.5% of fresh mucilage extracted from Aloe vera, Cylindropuntia californica, Opuntia engelmannii, Opuntia ficus-indica and Salvia hispanica mucilages were analyzed for color change (colorimetry), cohesion (ultrasound measurements), integrity (X-rays) and bioreceptivity (microbiological tests).The internal structure of the specimens added with Cacti mucilages shows better compactness, and no color change was noticed in the bio-mortars also after aging. The bioreceptivity response of mortars inoculated with bacteria, fungi and a photosynthetic biofilm was quite different. Specimens added with Aloe and Cylindropuntia mucilages showed a higher extent of bioreceptivity than the control; the specimens of bio-mortars added with Opuntia engelmannii, Opuntia ficus-indica and Salvia hispanica mucilages did not appear, up to threemonths after the contamination, any microbial growth. These results indicate that the addition of mucilage improves the mortar qualities, but the choice of the plant mucilage must be carefully evaluated since it can be responsible for changes in the bioreceptivity of the mortar.

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Luna-Sosa, Brenda, Guillermo C. G. Martínez-Ávila, Humberto Rodríguez-Fuentes, Ana G. Azevedo, Lorenzo M. Pastrana, Romeo Rojas, and Miguel A. Cerqueira. "Pectin-Based Films Loaded with Hydroponic Nopal Mucilages: Development and Physicochemical Characterization." Coatings 10, no. 5 (May 10, 2020): 467. http://dx.doi.org/10.3390/coatings10050467.

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Nopal is a potential source of mucilage that can be used in different food applications. One of its potential use is the development of films and coatings where it can act as a packaging material but also as a source of bioactive compounds. Therefore, this work aimed to develop and characterize pectin-based films loaded with mucilage extracted from two species of nopal, Copena F1 (Cop) and Villanueva (Vi). The obtained mucilages were denominated as materials without fibre (Copwtf and Viwtf) and with fibre (Copwf and Viwf), according to the fibre’s size. Films were produced with pectin (2% w/v), mucilage (2.5% w/v) and glycerol (0.5% w/v) by the casting method. The addition of mucilages was shown to influence the visual appearance, optical properties and morphology of the films. The presence of mucilage also changed the moisture content, water contact angle and water vapour permeability of the films. The pectin-based films without mucilage presented the best mechanical properties. Fourier-transform infrared (FTIR) spectroscopy showed similar signals in terms of frequency and intensity, for all the films, not showing any chemical modification. Results show that the mucilage obtained from different nopal fractions can be used in pectin-based films foreseeing their use as films or coatings in food applications.

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Santos, Francislaine Suelia dos, Rossana Maria Feitosa de Figueirêdo, Alexandre José de Melo Queiroz, Yaroslávia Ferreira Paiva, Henrique Valentim Moura, Eugênia Telis de Vilela Silva, João Paulo de Lima Ferreira, et al. "Influence of Dehydration Temperature on Obtaining Chia and Okra Powder Mucilage." Foods 12, no. 3 (January 28, 2023): 569. http://dx.doi.org/10.3390/foods12030569.

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Gum and mucilage from seeds and fruits are objects of study because they have characteristics of high viscosity at low concentrations and gelling properties, which are useful characteristics for modifying the texture and stabilizing products in the food industry. Chia and okra have high concentrations of polysaccharide gums in their composition, which makes them an interesting target for use in the composition of foods that require the use of texture enhancers and stabilizers. The present study investigated the influence of dehydration temperature on the characteristics of chia and okra powder mucilage obtained at different temperatures. The mucilages were extracted using an aqueous process and dehydrated in an air circulation oven at 50, 60, and 70 °C until hydroscopic equilibrium. Then, the powdered chia mucilage (CM) and okra mucilage (OM) were analyzed for chemical and physicochemical characteristics, bioactive compounds, antioxidant activity, and physical properties. It was found that powdered mucilage had low water content and water activity, with CM standing out in terms of ash, pectin, and starch content and OM, along with higher averages of proteins, sugars, total phenolic compounds, anthocyanins, flavonoids, and antioxidant activity. As for the physical parameters, CM stood out in relation to greater solubility and lower hygroscopicity, whereas OM presented higher wettability rates. Both powdered mucilages were classified as having good fluidity and cohesiveness from low to intermediate. In relation to the dehydration temperature, the best mucilage properties were verified at 70 °C. The study revealed that mucilages have good functional properties offering great potential as raw material for industry.

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Schallenberg, Marc, Hugo Borges, Tracey J. Bell, Simon F. R. Hinkley, and Phil M. Novis. "Dynamics of pelagic mucilage produced by the invasive, cyclotelloid diatom, Lindavia intermedia, in oligotrophic lakes of New Zealand." PLOS Water 1, no. 9 (September 8, 2022): e0000028. http://dx.doi.org/10.1371/journal.pwat.0000028.

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Marine pelagic mucilages (e.g., marine snow) have been reported to a greater extent than their lacustrine counterparts. A pelagic mucilage primarily comprised of chitin secretions from the invasive centric diatom, Lindavia intermedia, has been reported since the early 2000s, primarily from large, oligotrophic pre-alpine lakes of the South Island of New Zealand. To better understand the factors related to mucilage abundance, we monitored its abundance as well as factors potentially related to mucilage production over time in four mucilage-afflicted lakes. Temporal mucilage dynamics were episodic, with peaks in abundance occurring during any season, but most often during summer and autumn. Chitin was confirmed to be an important component of the mucilage, but the chitin content varied between 1 and 12% of the mucilage dry mass in the lakes. An RT-qPCR assay for chitin synthase gene overexpression in L. intermedia showed that overexpression occurred in summer and autumn, often when peaks in mucilage abundance also occurred. A correlation between mucilage and phytoplankton abundance was only observed in one of the lakes. Both dissolved reactive and total phosphorus concentrations were often below analytical detection limits in these lakes. Nitrate concentrations were also low and showed negative correlations with mucilage abundance. This suggests either that the secrection of chitinous mucilage by L. intermedia significantly depleted the available N in the water column or that mucilage facilitated N uptake by L. intermedia and/or other microorganisms associated with the mucilage. Pelagic mucilage in New Zealand lakes shares many characteristics of other conspicuous mucilage phenomena, including lake snow and marine snow. While our correlational analyses revealed some relationships and associations with mucilage abundance, the strengths of these were quite variable, indicating that as yet unstudied mucilage loss processes in these lakes (e.g., sedimentation, disintegration, decomposition, assimilation) likely also play important roles in regulating mucilage abundance.

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Mengesha, Yohannes, Abdu Tuha, Yimer Seid, and Admassu Assen Adem. "Evaluation of Aloe weloensis (Aloeacea) Mucilages as a Pharmaceutical Suspending Agent." Advances in Pharmacological and Pharmaceutical Sciences 2021 (May 19, 2021): 1–6. http://dx.doi.org/10.1155/2021/6634275.

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Natural polymers, specifically mucilages, have been used as a suspending agent for a long period of time. Natural excipients can serve as an alternative to synthetic products since they are less expensive, less toxic, and devoid of environmental pollution. There are many species of Aloe found in Ethiopia which can be used as a source of mucilage. In this study, mucilage from Aloe weloensis, which is found in Wollo floristic region, was extracted and tested as a suspending agent at different suspending agent concentrations and compared with standard suspending agents (acacia and sodium carboxy methylcellulose (NaCMC)) by formulating zinc oxide suspension. The mucilage obtained from Aloe weloensis leaves has shown comparable suspending agent ability with acacia. The rate of sedimentation and viscosity was higher at 1% and 4% mucilage concentrations than acacia though the difference was not significant ( p > 0.05 ). The suspension was slightly basic and easily dispersible than NaCMC. Suspensions formulated from NaCMC were superior in terms of viscosity and sedimentation volume which was significantly different ( p < 0.05 ) accompanied by lower flow rates than suspensions formulated from acacia and Aloe weloensis mucilages. The results suggested that Aloe weloensis mucilage could be used as an alternative suspending agent.

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Zhang, Keliang, Yin Zhang, Yusong Ji, Jeffrey L. Walck, and Jun Tao. "Seed Biology of Lepidium apetalum (Brassicaceae), with Particular Reference to Dormancy and Mucilage Development." Plants 9, no. 3 (March 5, 2020): 333. http://dx.doi.org/10.3390/plants9030333.

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Lepidium apetalum (Brassicaceae) is an annual or biennial weed widely distributed in Asia and Europe. The outer surface of L. apetalum seeds produces a large amount of mucilage. The primary aim of this study was to explore the dormancy characteristics and to determine how mucilage develops. The role of mucilage in water absorption/dehydration, the effects of after-ripening, gibberellin acid (GA3), cold stratification and seed coat scarification on germination, the role of mucilage in germination and seedling growth during drought, and the progress of mucilage production during seed development were investigated. The results indicate that the best temperature regime for germination was 10/20 °C. After-ripening, GA3 and seed coat scarification helped to break dormancy. Light promoted germination. Seedling growth of mucilaged seeds were significantly higher than those of demucilaged seeds at −0.606 and −1.027 MPa. Anatomical changes during seed development showed that mucilage was derived from the outer layer of the outer integument cells. Our findings suggest that seeds of L. apetalum exhibited non-deep physiological dormancy. The dormancy characteristics along with mucilage production give seeds of L. apetalum a competitive advantage over other species, and thus contribute to its potential as a weed. Effective control of this weed can be achieved by deep tillage.

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Pasha, Ali Zar, Shazia Anwer Bukhari, Ghulam Mustafa, Fozia Anjum, Mahr-un-Nisa, and Sameer H. Qari. "Evaluation of Modified Date Palm (Phoenix dactylifera L.) Mucilage as a Potential Pharmaceutical Excipient." Journal of Food Quality 2022 (August 19, 2022): 1–12. http://dx.doi.org/10.1155/2022/3923812.

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Investigation on natural sources from plants, animals, and microorganisms that produce gums and mucilages goes on increasing day by day to check their pharmaceutical applications. Different mucilages have been studied for their pharmaceutical effects but the use of date palm (Phoenix dactylifera L.) mucilage as a pharmaceutical excipient is still under the cover. The aim of this study was therefore to evaluate and compare the flow property and binding ability of crude, purified, modified (hydrolyzed and grafted), green synthesized nanoparticles (Zinc oxide (ZnO), cuperic oxide (CuO), silver (Ag), and gold (Au)) of date palm mucilage with hydroxy propyl methyl cellulose (HPMC) and commercially available paracetamol tablets. Previously purified mucilage (with 58.4% yield) was subjected to modification (i.e., acidic, basic, and enzymatic), grafting (polyacrylamide), and green synthesis of nanoparticles. Flow properties of powdered (granular) crude, purified, modified, and nanoparticles were studied and compared with flow properties of HPMC and paracetamol tablet granules. Tablets were made using granules of all types of date palm mucilage (discussed above), HPMC, and granules of paracetamol tablets to study and compare weight uniformity, hardness, friability, dissolution rate, and disintegration time. When 100 mg/kg of mucilage sample was given to mice no oral toxicity was found. The results obtained during this study were within the acceptable ranges given in pharmacopeias. The pseudoplastic flow behavior, hygroscopic nature, increased solubility, and swelling index across the increase in temperature, hardness of the tablets, friability, and drug release behavior were found better than HPMC and the binders used in commercially available paracetamol, hence making the date palm mucilage (crude, purified, and modified) an excellent excipient to be used in pharmaceutical dosage forms.

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Dissertations / Theses on the topic "Mucilage"

Leite, Rildo Araújo [UNESP]. "Mucilagem residual e qualidade da bebida do café cereja descascado." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/101890.

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Made available in DSpace on 2014-06-11T19:31:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-08Bitstream added on 2014-06-13T20:22:36Z : No. of bitstreams: 1 leite_ra_dr_botfca.pdf: 2500405 bytes, checksum: 55b4922dcb1ec7fc7e7e25a07c362a62 (MD5)
O Café Cereja Descascado vem fazendo história ao ganhar a maioria dos prêmios de qualidade nos concursos de Cafés Especiais promovidos pelas empresas e associações do ramo. Semelhante ao Café Despolpado, difere deste no entanto, por ter bebida mais encorpada devido sua tecnologia de produção que mantém a mucilagem natural que envolve o pergaminho. A necessidade da secagem imediata e a dificuldade dos secadores operarem com o produto úmido e impregnado de mucilagem, levou ao desenvolvimento dos Desmuciladores que fazem uma desmucilagem parcial do produto úmido, encurtam o tempo de escorrimento no terreiro e facilitam a operação do secador. Tendo em vista as ponderações anteriores, formulou-se como principal objetivo deste trabalho a análise da relação entre o teor de mucilagem residual do CD® e a bebida e o corpo resultantes. Paralelamente a isso analisou-se a relação entre o perfil do café da roça e o teor de mucilagem no café cereja. As variações nos teores de mucilagem, que resultaram em 4 diferentes combinações de lotes processados, foram obtidas com a variação da altura percorrida pelo café no Desmucilador Vertical e da injeção de água na câmara de desmucilagem. Como testemunhas obteve-se uma amostra despolpada do mesmo café e outra produzida com mucilagem natural do Cereja Descascado. Os cafés assim tratados foram submetidos às provas de xícara por três provadores que analisaram as características: bebida, corpo, acidez, aroma, e sabor. Os resultados obtidos permitiram concluir entre outras coisas, que é possível controlar os teores de mucilagem desejados produzindo diferentes características de corpo sem afetar a qualidade da bebida.
The pulped ripe red coffee berry has become prominent for the most quality prizes it has taken in competitions of the special coffees promoted by companies and associations in the sector. It is similar to the pulped coffee, but differs from this one because it produces a more consistent beverage, since its production technology keeps the natural mucilage involving the pulped coffee. The need for immediate drying and the operational difficult of the dryers when the product is moistened and impregnated with mucilage led to the development of demucilators that partially demucilate the humid product, as well as shorten the time of the water flowing on the ground and facilitate the operation of the dryer. Taking the previous aspects into account, the main objective of this study is to analyze the relationship between the content of the residual mucilage in CD® and the resulting beverage consistence. At the same time, the relationship between the natural rough coffee profile and the mucilage content in the ripe red coffee berry. The variation in mucilage contents resulting into four different combinations of the processed lots were obtained, by varying either the height from which the coffee berries run down the vertical demucilator and the water injection in the demucilaging chamber. A pulped sample of the same coffee and another one produced with natural mucilage of the pulped ripe red coffee cherry were used as control. The treated coffee cherries were submitted to “cupping”, and three tasters analyzed their characteristics: beverage, consistence, acidity , odor, and flavor . According to the results, it may be concluded that it is possible to control the desired mucilage contents, therefore obtaining different consistence characteristics without affecting the quality of the beverage.

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Leite, Rildo Araújo 1968. "Mucilagem residual e qualidade da bebida do café cereja descascado /." Botucatu : [s.n.], 2002. http://hdl.handle.net/11449/101890.

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Orientador: Jayme de Toledo Piza e Almeida Neto
Resumo: O Café Cereja Descascado vem fazendo história ao ganhar a maioria dos prêmios de qualidade nos concursos de Cafés Especiais promovidos pelas empresas e associações do ramo. Semelhante ao Café Despolpado, difere deste no entanto, por ter bebida mais encorpada devido sua tecnologia de produção que mantém a mucilagem natural que envolve o pergaminho. A necessidade da secagem imediata e a dificuldade dos secadores operarem com o produto úmido e impregnado de mucilagem, levou ao desenvolvimento dos Desmuciladores que fazem uma desmucilagem parcial do produto úmido, encurtam o tempo de escorrimento no terreiro e facilitam a operação do secador. Tendo em vista as ponderações anteriores, formulou-se como principal objetivo deste trabalho a análise da relação entre o teor de mucilagem residual do CD® e a bebida e o corpo resultantes. Paralelamente a isso analisou-se a relação entre o perfil do café da roça e o teor de mucilagem no café cereja. As variações nos teores de mucilagem, que resultaram em 4 diferentes combinações de lotes processados, foram obtidas com a variação da altura percorrida pelo café no Desmucilador Vertical e da injeção de água na câmara de desmucilagem. Como testemunhas obteve-se uma amostra despolpada do mesmo café e outra produzida com mucilagem natural do Cereja Descascado. Os cafés assim tratados foram submetidos às provas de xícara por três provadores que analisaram as características: "bebida", "corpo", "acidez", "aroma", e "sabor". Os resultados obtidos permitiram concluir entre outras coisas, que é possível controlar os teores de mucilagem desejados produzindo diferentes características de "corpo" sem afetar a qualidade da "bebida".
Abstract: The pulped ripe red coffee berry has become prominent for the most quality prizes it has taken in competitions of the special coffees promoted by companies and associations in the sector. It is similar to the pulped coffee, but differs from this one because it produces a more consistent beverage, since its production technology keeps the natural mucilage involving the pulped coffee. The need for immediate drying and the operational difficult of the dryers when the product is moistened and impregnated with mucilage led to the development of demucilators that partially demucilate the humid product, as well as shorten the time of the water flowing on the ground and facilitate the operation of the dryer. Taking the previous aspects into account, the main objective of this study is to analyze the relationship between the content of the residual mucilage in CD® and the resulting beverage consistence. At the same time, the relationship between the natural rough coffee profile and the mucilage content in the ripe red coffee berry. The variation in mucilage contents resulting into four different combinations of the processed lots were obtained, by varying either the height from which the coffee berries run down the vertical demucilator and the water injection in the demucilaging chamber. A pulped sample of the same coffee and another one produced with natural mucilage of the pulped ripe red coffee cherry were used as control. The treated coffee cherries were submitted to "cupping", and three tasters analyzed their characteristics: beverage, consistence, acidity , odor, and flavor . According to the results, it may be concluded that it is possible to control the desired mucilage contents, therefore obtaining different consistence characteristics without affecting the quality of the beverage.
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Musa, Corentin. "Élaboration et caractérisation de matériaux composites biosourcés à base de mucilage et de fibres de lin." Thesis, Littoral, 2019. http://www.theses.fr/2019DUNK0535.

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Les travux de thèse ont été menés dans un contexte de développement et de valorisation de la filière lin au travers de l'élaboration de nouveaux matériaux composites biosourcés à base de mucilage et de fibres de lin. Ces travaux ont conduit dans un premier temps à la synthèse de précurseurs d'isosorbide époxy et polyuréthanes comme alternative aux précurseurs toxiques conventionnels. Pour cela nous avons proposé une voie originale d'optimisation de la synthèse de diglycidyle éther d'isosorbide (DGEI) en utilisant un procédé ultrasonique. Par la suite, la comparaison des méthodes de transformation des époxys en carbonates cycliques par l'inclusion de CO₂ nous a servi de base dans l'élaboration d'un protocole efficace de conversion des DGEI en cyclocarbonates d'isosorbide (CCI) dans des conditions douces de pression et de température. Dans une seconde partie, l'extraction de composés hydrosolubles de la graine de lin a permis d'identifier la structure complexe du mucilage et les effets des paramètres d'extraction sur les propriétés physico-chimiques et thermiques du mucilage. Ensuite, pour la première fois, l'oxydation du mucilage au 2,2,6,6-tétraméthylpipéridine-1-oxyle (TEMPO) a été réalisée avec succès. Puis, nous avons pu mettre en évidence l'efficience de l'oxydation assistée par ultrasons comparée à la méthode classique lors de la montée en échelle du procédé. En vue d'améliorer la compatibilité fibre/matrice des composites à fibres végétales, des traitements appliqués sur des fibres courtes de lin ont été effectués amenant à l'individualisation des fibres et à l'amélioration de l'oxydation appliquée sur des fibres sonifiées. Ces différents matériaux ont permis de formuler un panel de nouveaux biocomposites. Les DGEI ont été valorisés par la confection d'une résine réticulée par une amine renforcée par des fibres longues de lin dont les performances sont identiques aux composites pétro-sourcés. Par la suite, la sonicationdes fibres courtes de lin a mené à l'amélioration des propriétés mécaniques de composite PLA/Lin. L'utilisation de mucilage oxydé a démontré les aspects positifs de l'incorporation du mucilage de lin dans les composites légers et résistants en compression
The thesis was carried out in a context of development and valorisation of the flax through the conception of new bio-based composite materials made of mucilage and flax fibres. This work initially led to the synthesis of isosorbide epoxy and polyurethane precursors as an alternative to the conventional toxic precursors. For this, we proposed an original route for optimizing the synthesis of isosorbide diglycidyl ether (DGEI) using an ultrasonic process. Subsequently, the comparison of the conversion methods of epoxies into cyclic carbonates by the inclusion of CO₂ served as a basis for the development of an efficient protocol for converting DGEI into isosorbide cyclic carbonates (CCI) under moderate conditions of temperature and pressure. In the second part, the extraction of water-soluble compounds from the flaxseed allowed us to identify the complex structure of the mucilage and the effects of the extraction parameters on its physicochemical and thermal properties. Then, for the first time, oxidation of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) mucilage was successfully performed. After that, we have highlighted the enhanced efficiency of ultrasonic assisted oxidation over the conventional method when scaling up the process. In order to improve the fibre/matrix compatibility of natural fibre-based composites, different treatments of short flax fibres led to the individualizationof the fibres and to the improvement of the oxidation of sonicated fibres.These new materials allowed to formulate a series of novel biocomposites. The DGEI have been enhanced by making an amine-crosslinked resin reinforced with long flax fibres which have a comparable performance to oil-based composites. Additionally, the sonication of short flax fibres led to the improvement of the mechanical properties of PLA/Flax composite. The use of oxidized mucilage has demonstrated the beneficial aspects of flax mucilage incorporation into lightweight, compression-resistant composites

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蔣高松 and Gaosong Jiang. "The non-starch polysaccharides of taro (Colocasia esculenta)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31238658.

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Jiang, Gaosong. "The non-starch polysaccharides of taro (Colocasia esculenta) /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20456189.

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Fabrissin, Isabelle. "Etude de la production du mucilage séminal dans des populations naturelles d’Arabidopsis et sa contribution à la longévité des graines." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLA043.

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Les polysaccharides sont des composants majeurs des parois cellulaires ayant une structure dynamique et jouant un rôle essentiel dans la croissance des plantes. Les cellules épidermiques du tégument des graines d’Arabidopsis libèrent un halo de mucilage polysaccharidique lors de leur imbibition. Le mucilage séminal s'est avéré être un excellent système modèle pour l’étude de la production, des propriétés des polysaccharides et de leurs interactions. Le premier objectif de ma thèse était de valoriser la variabilité naturelle existant entre accessions d’Arabidopsis pour identifier de nouveaux gènes contrôlant la production de mucilage. Une analyse de génétique d’association a permis l’identification d’une amine oxidase et d’une glycosyltransferase putatives dont j’ai confirmé l’implication dans la biosynthèse des pectines du mucilage.J’ai également associé une famille de protéines aux interactions entre polysaccharides. De part ses propriétés d’hydrogel, le mucilage joue un rôle adaptatif et influence la physiologie de la graine. Il permet la rétention d’eau autour de celle-ci et pourrait ainsi influencer sa longévité. Le deuxième objectif de ma thèse était d’utiliser des mutants impactés dans la production de mucilage pour déterminer si ce dernier influence la longévité des graines après un traitement d’hydratation contrôlée appelé ‘priming’. Les graines ne libérant pas de halo de mucilage à l’imbibition ont une meilleure longévité en lien avec une diminution réduite d’acide salicylique. Mes résultats participent à une compréhension intégrée de la production de mucilage à plusieurs niveaux : écologiques, génétiques et physicochimiques
Polysaccharides are the major component of cell walls that are dynamic structures playing a fundamental role in plant growth. On imbibition, the epidermal cells of the Arabidopsis seed coat release a mucilage hydrogel formed of polysaccharides. This has proved to be an excellent model system for the study of cell wall polysaccharide production, properties and interactions. The first objective of my thesis was to exploit natural variation between Arabidopsis accessions to identify genes controlling mucilage polysaccharide production. A genome wide association study identified genes encoding proteins with putative functions as either an amine oxidase or glycosyltransferase and these were confirmed to contribute to the synthesis of mucilage pectin. I also found that a family of small proteins, whose function is undetermined, are likely to modulate the interaction of mucilage polymers. Mucilage is also an adaptive trait that may influence various aspects of seed physiology. Recent results indicate that this hydrogel plays a role in the retention of water around the seed and could influence their lifespan. A second objective of my thesis was to use mutants showing altered mucilage production to determine its contribution to seed lifespan after a controlled hydration treatment called ‘priming’. Seeds that do not release mucilage on imbibition retained longevity better after priming. I highlighted that the steady state levels of salicylic acid in primed seeds were influenced by mucilage and correlated negatively with their longevity. My results contribute to our genetic, physicochemical and ecophysiological understanding of mucilage production by seeds

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Thornton, Daniel Conrad Ogilvie. "Growth, mucilage production and aggregation of Skeletonema costatum." Thesis, Queen Mary, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338700.

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Abu, Ali Rola. "Micromorphology of extracellular mucilage in wood decay fungi." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300442.

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Pais, Yanay. "Fabrication and Characterization of Electrospun Cactus Mucilage Nanofibers." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3279.

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This work seeks to fabricate, optimize, and characterize nanofibers of cactus Opuntia ficus-indica mucilage and Poly (vinyl alcohol) (PVA) by electrospinning. Mucilage is a neutral mixture of sugars produced by cactus and PVA is a non-toxic, water-soluble, synthetic polymer, which is widely used as a co-spinning agent for polymers. Mucilage was extracted from the cactus pad and prepared for electrospinning by mixing with acetic acid. Two types of PVA were used differentiating in high and low molecular weights. Concentrations of PVA were varied to find an adequate threshold for fiber formation. Changing the ratio of PVA to cactus mucilage produced fibers of different diameter and quality. The optimizations of the parameters used in the electrospinning setup were also a factor in creating quality fibers without deformity. An acceptable PVA to mucilage ratio mixture was reached for the use of the electrospinning process and consistent nanofibers were accomplished with the use of both the low and high molecular weight PVA. The fibers were observed using a Scanning Electron Microscope, Atomic Force Microscopy, and Differential Scanning Calorimetry. In this project we were able to obtain nanofiber meshes made with environmentally friendly materials with fiber diameters raging from 50nm to 7um sized. The produced nanofibers were made in the hope that it can be utilized in the future as an inexpensive, biocompatible, and biodegradable water filtration system.

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Fabre, Jean-François. "Etude in vitro et in silico de l'extraction, modification chimique et assemblage de phospholipides pour la construction de nouvelles vésicules végétales : exemple de la caméline." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0066.

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Dans le cadre de plusieurs projets de recherche impliquant des partenaires académiques, industriels, et centres techniques locaux et nationaux (CLE Région n°14050981 : SMON-FERT, Réseau Carnot 3BCAR : CAMELINOIL, ITE PIVERT n° 2015-GENESYS-WP3P18-063 PROBIORAF, FEDER Convention N°16004168 : CHIA-EASYNOV), des approches d’études génériques de schémas intégrés ont été conçues pour valoriser le mucilage et les phospholipides de graines oléoprotéagineuses à mucilage, prenant ici l’exemple de la caméline. Présent à la surface des graines, le mucilage peut être efficacement extrait par l'utilisation d’une colonne à ultrasons alliée à des conditions de cisaillement adéquates. Sa composition et les propriétés qui peuvent en découler (comportement viscoélastique notamment) dépendent fortement des conditions de son extraction, en particulier du temps de traitement, comme le révèle le suivi continu de plusieurs paramètres (couple moteur, pH, conductivité, indice de réfraction). Riche en omega-3, l’huile est ensuite extraite des graines entières ou démucilaginées par pressage monovis pour les besoins alimentaires et de l’oléochimie dans ces différents programmes. Les phospholipides peuvent ensuite être récupérés par un traitement ultrasonore de l’huile en présence d’une faible quantité d’eau. Selon une méthode colorimétrique mise au point et des analyses chromatographiques, il apparait que si le rendement d’extraction d’huile dépend du taux d’humidité des graines, l’huile extraite contient peu de phospholipides, ceux-ci se retrouvant principalement dans le tourteau. Etant démucilaginé, ce dernier peut se prêter plus facilement à un traitement aqueux. Cependant, l’activation d’enzymes dans ce milieu impose le recours à des solvants organiques. Un couple de solvants comme l’éthanol et l’acétate d’éthyle est utilisé en remplacement du couple traditionnel méthanol/chloroforme, donnant des rendements similaires avec un impact supposé bien moindre sur la santé, l’environnement, de même que sur les possibilités de valorisation du tourteau. La composition des phospholipides détermine en grande partie les propriétés des vésicules qu’ils peuvent former en milieu aqueux. Pour élargir ces propriétés, notamment dans le domaine de l’encapsulation d’éléments nutritifs ou éliciteurs pour les plantes dans le programme SMON-FERT, une modification chimique des phospholipides a été entreprise. L’utilisation de faibles concentrations (<0,1 mM) de bleu de méthylène, en présence d’air et sous illumination (pour la génération de l’oxygène singulet), permet l’obtention d’hydropéroxydes à partir de phospholipides modèles (lécithine de soja) dissous dans l’éthanol. La variation de la concentration en photosensibilisateur et du volume d’air disponible permet de moduler le rendement d’oxydation des phospholipides pour aboutir à des vésicules de différentes tailles, charges et perméabilités ioniques. Si des conditions oxydantes trop poussées aboutissent à la perte des propriétés d’encapsulation, des conditions modérées permettent l’obtention de vésicules plus petites avec une perméabilité accrue de l’eau et de KCl. La dynamique moléculaire en mode « tout atome » et « gros grains » permet de relier cette perméabilité accrue à une diminution de l’épaisseur de la membrane, une augmentation de l’aire occupée par phospholipide et une plus grande hétérogénéité des vésicules formées. La combinaison d’outils in vitro et in silico peut ainsi permettre de comprendre comment adapter la modification chimique des phospholipides aux propriétés fonctionnelles voulues
Within the framework of several research projects involving academic and industrial partners as local and national technical centers (CLE Region n°1405050981 : SMON-FERT, Carnot network 3BCAR : CAMELINOIL, ITE PIVERT n° 2015-GENESYS-WP3P18-063 PROBIORAF, FEDER Convention N°16004168 : CHIA-EASYNOV), generic studies of integrated schemes have been designed to valorise mucilage and phospholipids from mucilaginous oilseeds, taking here the example of camelina. As the outermost surface layer of the seeds, mucilage can be effectively extracted by using an ultrasonic reactor with adequate shear conditions. Its composition and derived properties (as the viscoelastic behaviour) strongly depend on the parameters of its extraction, in particular the processing time, as revealed by the continuous monitoring of several responses (motor torque, pH, conductivity, refractive index). The omega-3 rich oil is then easily extracted from whole or demucilaginated seeds by single screw pressing for food and oleochemical needs in these different programs. According to chromatographic analyses and a specifically developed colorimetric method, it appears that if the oil extraction yield depends on the moisture content of the seeds, the phospholipid extraction yield remains low, these polar compounds being mainly found in the meal. Phospholipids can be recovered from the extracted oil by ultrasound-assisted precipitation with the presence of a small amount of water. Concerning the meal, as it is mucilage-free, it can be easily treated with water. However, the activation of enzymes in this solvent encourages the use of organic ones. A couple of solvents such as ethanol and ethyl acetate is used to replace the traditional methanol/chloroform mixture, giving similar yields with a supposedly much lower impact on health and environment, as well as on the potential further use of the meal. The composition of phospholipids largely determines the properties of the vesicles they can form in an aqueous medium. To extend these properties, particularly in the field of encapsulation of nutrients or elicitors for plants in the SMON-FERT program, a chemical modification of phospholipids has been undertaken. The use of low concentrations (<0.1 mM) of methylene blue, in the presence of air and under illumination (for the generation of singlet oxygen), allows the production of hydroperoxides from model phospholipids (soy lecithin) dissolved in ethanol. Using two variables (photosensitizer concentration and air volume) response surface methodology allows the oxidation to be modulated to produce vesicles of different sizes, charges and ionic permeability. If excessive oxidizing conditions result in the loss of encapsulation properties, moderate conditions allow the production of smaller vesicles with increased water and KCl permeability compared to unoxidized vesicles. Molecular dynamics study in "all atom" and "coarse grain" modes makes it possible to link this increased permeability to a decrease in membrane thickness, an increase in the area per lipid and a greater heterogeneity of the vesicles formed. The combination of in vitro and in silico tools can thus provide a way to adapt the chemical modification of phospholipids to the desired functional properties

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Books on the topic "Mucilage"

Kalin, Margarete A. This report is an addendum to: Nickel and arsenic adsorption onto mucilage producing algal colonies. Toronto, Ont: Boojum Research, 1997.

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Albay, Meriç. Mucilage Problem in the Sea of Marmara. Istanbul University Press, 2023. http://dx.doi.org/10.26650/b/ls32.2023.003.

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SERRANO-ARELLANO, Juan, Juan Carlos RODRÍGUEZ-URIBE, Zaira Betzabeth TREJO-TORRES, Karla María VELÁZQUEZ-LUCHO, Jaqueline MARMOLEJO-QUINTANAR, and Daniel Alejandro PINEDA-PRADO. Arquitectura y Sustentabilidad Handbook T-I. ECORFAN-Mexico, S.C., 2021. http://dx.doi.org/10.35429/h.2021.14.1.1.82.

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This work describes a methodology to evaluate the lighting conditions present in a building (that is, from a theoretical and experimental perspective), as well as proposals for materials used in construction from a sustainable vision with the incorporation of screw caps and Styrofoam. On the other hand, a prototype proposal for a sewage sanitation module is presented as well as a waterproofing based on cactus mucilage is established from a vernacular perspective with the aim of protecting the roofs of houses. This seeks to achieve an improvement from a sustainable perspective in terms of lighting, the use of sustainable materials focused on construction and the reuse of sewage in architectural projects based on a treatment system proposal.

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Legendre, Laurent, and Douglas W. Darnowski. Biotechnology with carnivorous plants. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198779841.003.0020.

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Several carnivorous plant families have been a source of medicine for centuries in many parts of the world. Research into their active ingredients have revealed that they include naphthoquinones, flavonoids, phenolic acid derivatives, goodyerosides, iridoids, and phenylpropanoids. Many aspects of their industrial production have been optimized, including plant elicitation, plant genetic modification, and plant in vitro culture to limit the collect of wild material. The currently most active biotechnological developments are related directly to their carnivorous nature. These include the heterologous production of therapeutic polypeptides by carnivorous plant secretory glands; and the creation of bio-inspired engineered products based on the snap-buckling mechanism of trap closure of the Venus’ fly trap, the internal nano-structures of the Drosera mucilage, and the physical properties of the slippery zone of the Nepenthes pitcher with applications in the textile, automobile, aeronautics, architecture, and medical industries.

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Velasquez, Louis. Rembrandt's Superior Oil and How to Make It: Methods of Using Psyllium Husk to Remove Mucilage from Flaxseed Linseed Oil As Discovered by Louis R. Velasquez. Independently Published, 2021.

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Dawidowsky, Ferdinand. Glue, Gelatine, Animal Charcoal, Phosphorus, Cements, Pastes, and Mucilages. BiblioLife, 2009.

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Glue, Gelatine, Animal Charcoal, Phosphorus, Cements, Pastes, and Mucilages. Franklin Classics, 2018.

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Glue, Gelatine, Animal Charcoal, Phosphorus, Cements, Pastes, and Mucilages. Creative Media Partners, LLC, 2022.

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Glue, Gelatine, Animal Charcoal, Phosphorus, Cements, Pastes, and Mucilages .. Franklin Classics, 2018.

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Book chapters on the topic "Mucilage"

Gooch, Jan W. "Mucilage." In Encyclopedic Dictionary of Polymers, 475. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_7722.

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Salehi, Elnaz, Zahra Emam-Djomeh, Morteza Fathi, and Gholamreza Askari. "Opuntia ficus -indica Mucilage." In Emerging Natural Hydrocolloids, 425–49. Chichester, UK: John Wiley & Sons, Ltd, 2019. http://dx.doi.org/10.1002/9781119418511.ch17.

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Sellner, Kevin G., and Serena Fonda-Umani. "Dinoflagellate blooms and mucilage production." In Ecosystems at the Land‐Sea Margin: Drainage Basin to Coastal Sea, 173–206. Washington, D. C.: American Geophysical Union, 1999. http://dx.doi.org/10.1029/ce055p0173.

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Hussain, Muhammad Ajaz, Gulzar Muhammad, Muhammad Tahir Haseeb, and Muhammad Nawaz Tahir. "Quince Seed Mucilage: A Stimuli-Responsive/Smart Biopolymer." In Polymers and Polymeric Composites: A Reference Series, 127–48. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-95990-0_19.

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Hussain, Muhammad Ajaz, Gulzar Muhammad, Muhammad Tahir Haseeb, and Muhammad Nawaz Tahir. "Quince Seed Mucilage: A Stimuli-Responsive/Smart Biopolymer." In Polymers and Polymeric Composites: A Reference Series, 1–22. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-92066-5_19-1.

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Menzel, Diedrik. "Cell Morphogenesis of the Algae:Cell Coverings and Extracellular Mucilage." In Progress in Botany, 52–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60458-4_3.

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Lu, B., and N. C. Uren. "Estimation of mucilage on maize roots with ruthenium red." In Plant Nutrition for Sustainable Food Production and Environment, 681–82. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0047-9_217.

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Uren, N. C. "Mucilage secretion and its interaction with soil, and contact reduction." In Plant Nutrition — from Genetic Engineering to Field Practice, 83–86. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1880-4_9.

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Kutschera-Mitter, L., K. M. Barmicheva, and M. Sobotik. "The Importance of Root-Cap Mucilage for Plant And Soil." In Root Demographics and Their Efficiencies in Sustainable Agriculture, Grasslands and Forest Ecosystems, 673–83. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5270-9_60.

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Nayak, Amit Kumar, and Md Saquib Hasnain. "Fenugreek Seed Mucilage Based Multiple Units for Oral Drug Delivery." In Plant Polysaccharides-Based Multiple-Unit Systems for Oral Drug Delivery, 93–112. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-10-6784-6_8.

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Conference papers on the topic "Mucilage"

Li, Jinjin, and Jianbin Luo. "Superlubricity Mechanism of Brasenia Schreberi Mucilage." In ASME/STLE 2012 International Joint Tribology Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ijtc2012-61113.

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An eatable aquatic plant, Brasenia schreberi, was found owning excellent lubrication properties with an ultra-low friction coefficient about 0.005 between its surface and a glass surface. The friction coefficient is closely related to the structure of mucilage and the content of water in the mucilage. Many nano-sheets were found in the mucilage surrounding the Brasenia schreberi. The lubrication mechanism is proposed due to forming hydration layer among these nano-sheets with plenty of bond water molecules. The excellent lubrication property has obvious application for the fabrication of glossy pill coated by such kind of mucilage, which would prevent pill lodging in people’s throat, especially for children.

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Murtaza, Mobeen, Zeeshan Tariq, Muhammad Shahzad Kamal, Muhammad Mahmoud, and Dhafer Al Sheri. "Application of Okra Mucilage for the Prevention of Shale Swelling." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207281-ms.

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Abstract Maintain wellbore stability is a very critical aspect of the drilling operation. The unstable wellbore provides severe loss to the drilling operators in terms of time and money. One of the significant reasons for unstable wellbore occurs due to the expansion of shale formation. Several solutions are utilized to tackle the expansion of shales, such as salts, PHPA, silicates, and oil-based drilling fluids. There are limitations associated with these solutions, such as thermal instability, limited supply, unfriendly to the environment and marine life, etc. In this study, Okra mucilage has been introduced as a shale swelling inhibitor in drilling fluids. Okra is widely used in the medical and food industries as a viscosifier as it is abundantly available in tropical and subtropical regions. Okra powder has been used as a fluid loss control additive in the literature. The application of the Okra solution as a shale swelling inhibitor in drilling fluids was not investigated in the past. In this study, Okra mucilage was extracted from the Okra plant and used as shale swelling inhibitor. Three different concentrations (5, 10 & 20) vol% of Okra mucilage mixed solutions were used for linear swell test. The test was performed using a linear swell tester at atmospheric conditions for 24 hours on bentonite wafers. Further zeta potential, particles size and capillary suction timer test (CST) were conducted. The experimental study revealed that Okra mucilage reduced the swelling of bentonite. For instance, 10 and 20% of Okra mucilage solutions reduced the swelling by 36.8% and 50.5%, respectively. The Okra mucilage decreased the zeta potential of clay and increased its particle size. CST time decreased initial at low concentration and increased with concentration. Overall, experimental investigations suggested that Okra mucilage could be an alternate green shale inhibitor in drilling fluids without compromising other drilling fluids' properties.

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López-Ortiz, A., M. J. León,, F. I. Pilatowsky, and L. L. L. Méndez. "Solar drying of strawberry coated with nopal mucilage: It’s effect on phenolic compounds." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7277.

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The objective of this study was to evaluate the effect of indirect solar drying (ISD) and conventional (CD) (40, 50, 60 °C) on the concentration of phenolic compounds of strawberry slices, coated with opuntia mucilage (Opuntia ficus indica), and measured with the spectrophotometric method. The indirect solar dryer uses solar-thermal and photovoltaic technology with temperatures between 40 and 60 °C. The concentration of anthocyanins was higher in the ISD than in CD. The strawberry coated with the nopal mucilage has a preservation of phenolic compounds in CD and IDS. Keywords: strawberry, solar drying, phenolic compounds

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Abaci, Bahri, Murat Dede, Seniha Esen Yüksel Erdem, and Mete Yilmaz. "Mucilage detection from hyperspectral and multispectral satellite data." In Algorithms, Technologies, and Applications for Multispectral and Hyperspectral Imaging XXVIII, edited by David W. Messinger and Miguel Velez-Reyes. SPIE, 2022. http://dx.doi.org/10.1117/12.2622287.

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Esi, Çağatay, Alp Ertürk, and Moussa Sofiane Karoui. "Unmixing With Spectral Variability for Marine Mucilage Analysis." In 2023 13th Workshop on Hyperspectral Imaging and Signal Processing: Evolution in Remote Sensing (WHISPERS). IEEE, 2023. http://dx.doi.org/10.1109/whispers61460.2023.10430638.

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Min Wu, Dong Li, Yuguang Zhou, Mengliang Bai, and Zhihuai Mao. "Removal of Flaxseed Mucilage by Extrusion and Enzyme Treatments." In 2009 Reno, Nevada, June 21 - June 24, 2009. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2009. http://dx.doi.org/10.13031/2013.27136.

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Kucuk, Sefa, Bahri Abaci, Murat Dede, Seniha Esen Yuksel, and Mete Yilmaz. "Analysis and Detection of Mucilage Bloom from Multispectral Satellite Images." In 2022 30th Signal Processing and Communications Applications Conference (SIU). IEEE, 2022. http://dx.doi.org/10.1109/siu55565.2022.9864988.

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Esi, Çağatay, Alp Ertürk, and Moussa Sofiane Karoui. "Generalized Linear Mixing Model Based Environmental Monitoring Of Marine Mucilage." In 2024 IEEE Mediterranean and Middle-East Geoscience and Remote Sensing Symposium (M2GARSS). IEEE, 2024. http://dx.doi.org/10.1109/m2garss57310.2024.10537460.

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Khan, Muhammad Arqam, Muhammad Aashan Sheikh, Muhammad Salman, Shaine Mohammadali Lalji, Syed Imran Ali, Mei-Chun Li, Kaihn Lv, and Jinsheng Sun. "Taro Mucilage as Green Inhibitor in Water-Based Drilling Fluid to Modify the Rheological and Filtration Properties and Mitigating Shale Swelling Characteristics." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216605-ms.

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Abstract Clay bearing shale formations tend to swell upon contact with water-based drilling fluid. The migration of hydrogen ions into the nano-spacing of shale platelets is mainly responsible for its disintegration and swelling. To mitigate the clay swelling problem, various shale stabilization materials are added in the water-based muds (WBMs). Before adding these additives, it is crucial to understand their physical and chemical interactions with clay minerals as well as within fluid. In this study, Taro Root Mucilage (TRM) is used as a green chemical in WBM to decrease the shale swelling characteristics. Taro root was boiled in distilled water at 40°C for 24 h and mucilage was prepared, which was characterized by FTIR and XRD pattern. It was then made part of a mud system, which then interacted with the shale sample collected from the western zone of Pakistan. Moreover, this mucilage was compared with sodium alginate mud system, a biopolymer commonly used in industry. The results of the experimental studies showed that TRM appreciably reduces clay swelling characteristics compared with the distilled water and sodium alginate. Moreover, all the rheological parameters fall under the recommended API range for TRM samples. Furthermore, it was found that the TRM produces a thin filter cake and minimizes fluid loss volume. In addition, during the shale cutting recovery test, 50%, 80% and 100% recoveries were obtained from base mud, whereas 10% and 20% were obtained from TRM based WBM respectively. TRM encapsulates the drilled cutting and preserves it from breaking into smaller fragments. In addition, TRM concentration in drilling mud increases the hydrophobicity of the shale sample. The adsorption of TRM over the surface of shale allows less penetration of water in the nano-spacing of shale structure and improves the shale stability. Hence, the finding in this article implies that TRM can be used as a green and sustainable substitute for traditional clay stabilizers in drilling operations to reduce formation damage. It has all the desired properties that help it to become an alternate solution in the form of a clay swelling inhibitor.

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Pal, Kunal. "Synthesis, characterization of Okra mucilage as a potential new age therapeutic intervention." In MOL2NET 2020, International Conference on Multidisciplinary Sciences, 6th edition. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/mol2net-06-06799.

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Reports on the topic "Mucilage"

Cender, Clinton, Catherine Thomas, Benjamin Greeling, Bradley Sartain, Ashley Gonzalez, and Martin Page. Pilot-scale optimization : Research on Algae Flotation Techniques (RAFT). Engineer Research and Development Center (U.S.), October 2023. http://dx.doi.org/10.21079/11681/47722.

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The impacts of harmful algal blooms (HABs) on US national waterways continue to cause significant economic and environmental damage. Re-searchers at the US Army Engineer Research and Development Center successfully demonstrated the Research on Algae Flotation Techniques (RAFT) project at pilot scale. This study was designed to show that the sur-face concentrations of algal biomass can be effectively increased with near linear scalability utilizing the natural methods by which some algae entrap air within excreted mucilage for flotation. The surface concentration of cyanobacteria measured as phycocyanin pigment increased by six-fold after RAFT flocculation treatment. Further optimization of chemical delivery systems, mixing, and dissolved air exposure will be required before full scale readiness.

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Cender, Clinton, Catherine Thomas, Martin Page, Bradley Sartain, Brianna Fernando, Musa Ibrahim, and Alec Wahl. Rapid algae flotation techniques. Engineer Research and Development Center (U.S.), October 2023. http://dx.doi.org/10.21079/11681/47704.

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Dissolved air flotation (DAF) is an effective technique for algae separation following the application of flocculants and coagulants. Some harmful algae produce mucilage or extracellular polymeric substances useful for flotation. This study evaluated natural polysaccharides to determine effects on algal flotation with DAF. Food-grade gums (xanthan gum, guar gum, gum arabic, gellan gum, and diutan gum) were tested with cyanobacteria cultures singly and in combination with commercial flocculants (including Tramfloc 222 and Tramfloc 300). Gum arabic alone had no effect when evaluated at concentrations between 10 mg/L and 5,000 mg/L. However, the combination of gum arabic and Tramfloc 300 yielded higher algal flocculation than Tramfloc 300 alone. The combination of xanthan gum (anionic) and guar gum (cationic) did not perform at the level of the combined xanthan gum and Tramfloc 222 in either flocculation or flotation of algae. Tramfloc 222 and xanthan gum; however, yielded effective flocculation seemingly resistant to changes in interfering factors such as turbulence, pH, and temperature. Furthermore, the combination of xanthan gum and Tramfloc 222 provided the most effective flotation and flocculation independent of pH effects. The results suggest that anionic polysaccharides can be used to increase the efficacy of cationic coagulants such as Tramfloc 222.

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Academic literature on the topic 'Mucilage'

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