scispace - formally typeset
Search or ask a question
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.


Papers
More filters
Journal ArticleDOI
TL;DR: Graft copolymerization of polyacrylamide onto gum arabic was carried out in aqueous medium at room temperature (30 o C) using various initiator and monomer concentrations as discussed by the authors.
Abstract: Graft copolymerization of polyacrylamide onto gum arabic was carried out in aqueous medium at room temperature (30 o C) using various initiator (ceric ion) and monomer (acrylamide) concentrations. The extent of graft copolymer formation was determined in terms of percentage graft yield. The results obtained showed that the percentage yield of the graft copolymer is a function of both the initiator and monomer concentrations. The grafted copolymer was characterized by infrared (IR) spectroscopy. The IR spectral data for pure Gum Arabic (GA) and that of Gum Arabic-grafted Polyacrylamide (GA-g-PAAM) indicate that grafting actually occurred. The successful grafting of polyacrylamide onto gum arabic will enhance the search for materials transformation through chemical derivatization with attendant expansion of their spectra of application. Keywords : Graft copolymerization, polyacrylamide, monomer, gum arabic, Chemical derivatization

6 citations

Journal ArticleDOI
TL;DR: In this paper , the authors evaluated foam mat drying, spray drying, and freeze-drying for producing powder from coffee silverskin extracts, and the physicochemical properties of powders, such as water activity, moisture, wettability, hygroscopicity, solubility, color, antioxidant activity, and total phenolic were determined.
Abstract: Coffee silverskin is a coproduct that has a rich composition in bioactive compounds. However, most of these compounds are susceptible to the conditions used during food processing and storage. Encapsulation is a process of great interest to increase the stability of these bioactive compounds, and different methods can influence the final characteristics of the product. Therefore, this study aimed to evaluate the encapsulation methods by foam mat drying, spray drying and freeze-drying for producing powder from coffee silverskin extracts. Density, porosity, overrun, and stability foam were evaluated and the physicochemical properties of powders, such as water activity, moisture, wettability, hygroscopicity, solubility, color, antioxidant activity, and total phenolic were determined. The optimal condition required for the feed mixture for foam formation was 7.6% gum arabic, 2% maltodextrin, and 10.4% egg albumin. All methods presented powders with desirable values of water activity, moisture content, and hygroscopicity, being considered stable for storage, and high content of bioactive compounds. Higher temperatures for foam mat drying produced powders with higher encapsulation efficiency (>77%) and longer wettability than lower temperatures (50 and 60°C). Therefore, this study verified that foam mat drying can be considered an efficient and promising method for encapsulating bioactive compounds from coffee silverskin extract. PRACTICAL APPLICATION: Foam mat drying can be considered an alternative method to conventional encapsulation by spray drying and freeze-drying. This method is simple, inexpensive, and generates high-quality products. Optimization of foam properties is necessary to ensure successful drying.

6 citations

Patent
02 Jun 1966
TL;DR: In this article, a method of increasing the heat capacity of a ceramic shell mould comprises spraying the external surface of the mould with a ceramic in the form of flock or fibrous particles and with a binder therefor whereby a cellular coating is formed thereon.
Abstract: A composition for increasing the heat capacity of a ceramic shell mould by spraying the external surface of the mould therewith comprises a ceramic in the form of flock or fibrous particles with a binder therefor. A cellular coating is formed thereby. The particulate material may be silica fibres or fibrous particles of a fused aluminium silicate such as kaolin clay. The binder may be hydrolysed ethyl silicate, an alkali metal silicate solution, solutions of gum acacia or gum arabic or a mixture of gum acacia and silica sol. The mould may be fired to burn off the organic material of the binder and harden the coating.ALSO:A method of increasing the heat capacity of a ceramic shell mould comprises spraying the external surface of the mould with a ceramic in the form of flock or fibrous particles and with a binder therefor whereby a cellular coating is formed thereon. The particulate material may be silica fibres or fibrous particles of a fused aluminium silicate such as kaolin clay. The binder may be hydrolysed ethyl silicate, an alkali metal silicate solution, solutions of gum acacia or gum arabic or a mixture of gum acacia and silica sol. The mould may be fired to burn off the organic material of the binder and harden the coating.

6 citations

Journal ArticleDOI
TL;DR: In this paper, a standard low reactivity phenol-formaldehyde resin prepared according to a formulation already reported was tested freshly prepared and after 3 months ageing for gel time at 100°C.
Abstract: A standard low reactivity phenol-formaldehyde resin prepared according to a formulation already reported was tested freshly prepared and after 3 months ageing for gel time at 100°C, and for laboratory particleboard preparation in presence of 3% acacia gum arabic, of 3% polyvinyl alcohol, of 3% of a liquid soap and of 3% polyethylene glycol, all added to the PF resin predissolved in water.

6 citations

Patent
21 Mar 2008
TL;DR: In this article, a water-in-oil type emulsified composition consisting of methyl cellulose in an amount of 1-10 wt% based on the water in-oil-type emulsification composition was proposed.
Abstract: PROBLEM TO BE SOLVED: To obtain a water-in-oil type emulsified composition such as butter cream having palatability of good melting feel in the mouth and high-temperature shape retention SOLUTION: The water-in-oil type emulsified composition comprises methyl cellulose in an amount of 01-10 wt% based on the water-in-oil type emulsified composition of methyl cellulose The composition further comprises one or more kinds selected from gum arabic, gum ghatti, octenyl succinated starch, sucrose fatty acid ester and glycerin fatty acid ester The water-in-oil type emulsified composition is butter cream or fat spread COPYRIGHT: (C)2008,JPO&INPIT

6 citations


Network Information
Related Topics (5)
DPPH
30.1K papers, 759.9K citations
82% related
Starch
50.2K papers, 1M citations
80% related
Antioxidant
37.9K papers, 1.7M citations
80% related
Chitosan
20K papers, 608.7K citations
78% related
Fermentation
68.8K papers, 1.2M citations
77% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023147
2022285
2021120
2020128
2019137
2018127