Topic
Gum arabic
About: Gum arabic is a research topic. Over the lifetime, 2197 publications have been published within this topic receiving 47782 citations. The topic is also known as: acacia gum.
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TL;DR: In this article, a new approach for the microencapsulation of curcumin from turmeric oleoresin (in alcoholic solutions) by a spray drying process using different biopolymers such as gum arabic, sodium alginate and modified chitosan as wall materials.
52 citations
TL;DR: An artificial gum-tree was made of wooden dowel and filled with Acacia Senegal exudate dissolved in water, showing all of the behavioral patterns described in nature.
Abstract: Marmosets (Callithrix, Cebuella) in the wild gouge wells in trees and eat the exudates that accumulate there. An artificial gum-tree was made of wooden dowel and filled with Acacia Senegal exudate (gum arabic) dissolved in water. Three families of marmosets avidly gouged and consumed gum from this device, showing all of the behavioral patterns described in nature. The gum-tree cost little and was easy to make.
51 citations
TL;DR: During the oxidative stability study, carbohydrate-based microencapsulation was the wall material that best protected the active materials against lipid oxidation.
51 citations
TL;DR: In this paper, an anomalous role of oxygen was observed, i.e., oxygen may act simultaneously as an inhibitor, comonomer and indirect initiator, depending on the type of polysaccharide.
Abstract: Acrylonitrile (AN) was grafted onto various natural and modified polysaccharides (i.e., gum arabic, gum tragacanth, xanthan gum, sodium alginate, chitosan, sodium carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose) by using ceric-carbohydrate redox initiating system. After overcoming practical problems, mainly from the high viscosity of the aqueous solutions of the different substrates, the graft copolymerization reactions were run either in air or in N 2 atmosphere under similar conditions. Grafting was confirmed using chemical and spectral (FTIR) proofs. The reactions were kinetically investigated using semi-empirical expressions and time-temperature profiles. An anomalous role of oxygen was observed, i.e., oxygen may act simultaneously as an inhibitor, comonomer and indirect initiator, depending on the type of polysaccharide. Measured grafting parameters, in most cases, showed a higher grafting yield and efficiency when the polymerization had been run under N 2 . However, medium to high grafting percentages were also achieved in air.
51 citations