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.

The Effect of Gum Arabic Encapsulated with Rosemary Extract on the Quality of Minced Silver Carp and Eschershia coli Inoculated in the Mince

Abstract: Quality of minced silver carp (Hypophthalmicthysmolitrix) with gum arabic encapsulated with 1 and 1.5%( w/w) and rosemary extract (RE) (1 and 1.5% w/w) stored at 4˚C was studied chemically (peroxide value and total volatile nitrogen) and microbiologically (total viable count, psychrotrophic count) analyses. The efficacy of the encapsulated extract to control the population of Eschershia coli inoculated in silver carp minces was also investigated. Minced silver carp samples treated with gum arabic encapsulated with 1.5% and samples containing rosemary extract significantly showed (P < 0.05) lower peroxide value and total volatile nitrogen content compared to the control during the storage period. Microbial deterioration of the minced samples was restarted by RE as reflected by lower total viable count and psychrotrophic counts in the samples while the lowest counts was observed at 1.5% encapsulated RE. Although encapsulated RE at 1.5% could reduce the population of E.coli on compared to the control and unencapsulated RE treated samples, but it could not control the population of E. coli or reduce it below the acceptable level (<2 log CFU/g). Generally, gum arabic encapsulation could help to obtain higher antimicrobial activity in minced fish.

Modified powder and formulated cosmetic

Abstract: PROBLEM TO BE SOLVED: To obtain modified powder having soft feel, excellent feeling of application and adhesivity and a cosmetic formulated with the powder. SOLUTION: The modified powder is coated with agar and Gum arabic. The cosmetic comprises the powder formulated therein. The amounts of the agar and the Gum arabic applied to the powder are 0.5-10 mass % and 0.5-30 mass % based on the own weight of the powder. COPYRIGHT: (C)2004,JPO&NCIPI

Aqueous etch composition

Abstract: An aqueous etch composition for paper base planographic printing masters comprises an anionic macromolecular colloidal polyelectrolyte containing a high proportion of dissociable anionic groupgs having a pH of at least 5 but less than 7, containing a humectant and an inert inorganic colloid The humectant may be glycerol, diethylene or triethylene glycol, sorbitol or mannitol and the inert inorganic colloidal material may be colloidal silica, stannic acid, metasilicic acid on fluorosilicic acid which may be in the form of an alkali metal or ammonium salt The polyelectrolyte may be a naturally occurring gum or polysaccharide or a carboxymethyl derivative thereof, eg gum arabic, gum tragacanth, gum karaya, pectin, guar gum and alginic acid and its salts may be used In addition polymers of acrylic acid of the general formula CH2=CRCOOH, where R is a hydrogen or halogen atom or an alkyl group having 1 to 4 carbon atoms, or a salt of said polymer, may also be present In the examples sodium alginate powder, gum tragacanth and gum guar are the polyelectrolytes used when the acrylic polymers are not employedALSO:An aqueous etch composition for paper base planographic printing masters comprises an anionic macromolecular colloidal polyelectrolyte containing a high proportion of dissociable anionic groups having a pH of at least 5 but less than 7, containing a humectant and an inert organic colloid Suitable humectants and inert inorganic colloids are as listed in Specification 1,013,944 The anionic colloidal polyelectrolyte may be a polymer of acrylic acid of the general formula CH2=CRCOOH where R is a hydrogen or a halogen atom or an alkyl group having 1 to 4 carbon atoms, or a salt of said polymer as in Specification 1,013,944 In place of or in addition to said acrylic polymers a naturally occurring gum or polysaccharide or a carboxymethyl derivative thereof may be used, eg gum arabic, gum tragacanth, gum karaya, pectin, guar gum and alginic acid and its salts may be used

Microencapsulation of Polyphenols from Orthosiphon stamineus Leaves Extracts using Polysaccharide and Protein

Abstract: This paper presents the Orthosiphon stamineus polyphenol extraction and microencapsulation study using whey protein isolate, gum arabic and maltodextrin. Polyphenol content was analysed using ultra-performance liquid chromatography. The highest yield of rosmarinic acid (38.70 mg RA/g DW) was obtained using 70% aqueous methanol, whereas the highest yield of sinensetin (261.21 µg Sin/g DW) and eupatorin (2.71 mg Eup/g DW) was obtained using isopropanol. Aqueous solvent such as 70% ethanol provide a broader range of polarity than the pure solvent, and hence enhances a simultaneous extraction of both methoxylated and hydroxylated compounds. It was found that microwave assisted extraction is capable to perform an efficient and very fast extraction of polyphenols within 2 minutes, compared to the ultrasonic assisted extraction which require 90 minutes. Microencapsulation of polyphenols from O. stamineus using WPI, maltodextrin and gum arabic has successfully reduced polyphenol degradation during spray drying. The highest polyphenol retention of rosmarinic acid (84.25%), sinensetin (83.96%) and eupatorin (85.61%) was achieved by microencapsulation using gum arabic. The gum arabic derived microcapsule has a smooth spherical surface which enhance particle flowability.