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Polysaccharide-Based Polymers in Cosmetics
Published in E. Desmond Goddard, James V. Gruber, Principles of Polymer Science and Technology in Cosmetics and Personal Care, 1999
E. Desmond Goddard, James V. Gruber
Gum karaya is not a truly water-soluble material (78,79). It is composed primarily of a highly branched D-galacturonic acid backbone. Many of the acidic monosaccharides are acetylated, which causes the water insolubility. Instead of dissolving, gum karaya swells in water and develops significant viscosity even at low concentration. Stickiness accompanies the swelling, which explains its popularity in denture adhesives.
Biodegradability and Biocompatibility of Natural Polymers
Published in Amit Kumar Nayak, Md Saquib Hasnain, Dilipkumar Pal, Natural Polymers for Pharmaceutical Applications, 2019
Abul K. Mallik, Md Shahruzzaman, Md Sazedul Islam, Papia Haque, Mohammed Mizanur Rahman
Gum karaya, also known as sterculia gum, is a vegetable gum taken from the tree Sterculia urens. People use it to make medicine. Gum karaya is applied as a laxative to relieve constipation, in cosmetics and denture adhesives, and as a thickener and emulsifier in foods. It is used as a bulk-forming laxative to relieve constipation. Gum karaya stimulates the digestive tract by swelling the intestine, which results to push stool through.
Bionanocomposites in Water and Wastewater Treatment
Published in Shakeel Ahmed, Saiqa Ikram, Suvardhan Kanchi, Krishna Bisetty, Biocomposites, 2018
Gulshan Singh, Deepali Sharma, Thor Axel Stenstrom
Gum karaya is an anionic polysaccharide exudate from trees such as Sterculia urens (family Sterculiaceae). This polysaccharide is highly branched and consists of d-galacturonic acid, d-galactose, l-rhamnose, and d-glucuronic acid. Gum karaya is poorly soluble in water but can swell considerably and provide dispersions.
Sustainable plant-based bioactive materials for functional printed textiles
Published in The Journal of The Textile Institute, 2021
Alka Madhukar Thakker, Danmei Sun
Concurrently, to circumvent the environment and human health problems associated with non-renewable and oil-based inks an attempt was made by Shaw, to develop vegetable inks for textile screen printing and paper-based on CMYK color system of modern printers. To obtain cyan, indigo, woad, and Japanese knotweed was utilized. For yellow, weld and buckthorn were considered. To obtain magenta, madder, elder, pokeweed, and brazilwood were utilized. And for black, logwood, walnut hulls, oak galls, sumac, elder and Adler, mixtures were attempted. The author identified traditional naturally occurring gums and starches that were utilized for printing in textile namely, gum tragacanth, gum arabic, maize, wheat, potatoes, alginates, sago, arrowroot, cherry gum, linseed, rice starch, gum karaya, agar, gomma, bassora gum, and gommeline. However, for the study, potatoes starch, seaweed alginates, and gum arabic were utilized (Phil, 1999).
Plant gums for sustainable and eco-friendly synthesis of nanoparticles: recent advances
Published in Inorganic and Nano-Metal Chemistry, 2020
Nanostructures and nanoparticles (NPs) have been successfully applied in various fields, including pharmaceuticals, biomedicines, regenerative medicines, tissue engineering, sustainable energy, and environmental sciences.[1–6] Green chemistry-based nanosciences and technologies can be applied for designing and manufacturing products by applying sustainable and renewable materials (such as natural-based materials, safer solvents, and biodegradable/biocompatible materials) which can eliminate or reduce the application and formation of hazardous, unsafe and toxic substances.[2,7–11] In this regard, plant gum polysaccharides and their nanostructures (as natural and versatile green materials) can be applied in biomedicine, nanotechnology, food sciences, water treatment, biotechnology, environmental sciences, and nanomedicine.[12] For instance, the composite hydrogels have been produced based on gum tragacanth carbohydrate and graphene oxide.[13] Gum tragacanth was sulfonic acid-functionalized and cross-linked by using 2-acrylamido-2-methylpropanesulfonic acid and N,N′-methylenebisacrylamide monomers and ceric ammonium nitrate as an initiator. Consequently, the maximum adsorption capacity was 142.50, 112.50 and 132.12 mg g−1 for Pb(II), Cd(II), and Ag(I), respectively.[13] Additionally, nanofiber membranes composed of polyvinyl alcohol and a natural gum karaya hydrocolloid were fabricated using electrospinning. The electrospun membranes of polyvinyl alcohol/gum karaya were cross-linked with heat treatment and later methane plasma was applied to obtain a hydrophobic membrane. The membrane was applied for the extraction of NPs from water.[14]