Showing papers on "Gum arabic published in 1978"

Biochemical effects of gum arabic, gum tragacanth, methylcellulose and carboxymethylcellulose-Na in rat heart and liver.

Abstract: Repeated oral administration of commonly used suspending media, gum arabic, gum tragacanth, methylcellulose, and carboxymethylcellulose-Na to rats caused uncoupling of oxidative phosphorylation in liver and heart mitochondria and partial inhibition of mixed function oxidases of liver endoplasmic reticulum, as measured by 2-biphenylhydroxylation and 4-biphenylhydroxylation. There were considerable differences between the compounds with regard to potency and reversibility of these effects. Only methylcellulose at a concentration of 0.5% did not alter mitochondrial function and mixed function oxidases. It is recommended as suspending medium for the use in pharmacological and toxicological experiments.

Effect of stabilizing agents and aspartame on the sensory properties of orange sherbet

Abstract: An orange sherbet incorporating aspartame as a partial sweetener was formulated. Due to a significant reduction of the total solids content, the following stabilizers were used individually and in combination to determine their effectiveness in improving the sherbet quality: arabinogalactan, carrageenan, guar gum, gum arabic, gum tragacanth, locust bean gum, a proprietary ice cream stabilizer, a proprietary sherbet stabilizer, purified wood cellulose, microcrystalline cellulose, and xanthan gum. Preference tests and modified texture profiles were utilized to determine the desirability of the different sherbet formulations. After hardening and after 4 wk of −25°C storage, the formulations with 37.5% of the sweetness as aspartame with either xanthan gum or the combination of carrageenan and locust bean gum were equal in desirability to the control.

Sudan challenges the sand dragon.

Abstract: Formerly productive areas have become wasteland as the desert advances in the Sudan. To understand how desertification is undermining the very survival of the Sahel one ecosystem is reviewed in detail here: the gum arabic zone of Kordofan. After cotton gum arabic is Sudans largest export worth from $14-26 million in recent years. In this zone the ecologically balanced cycle of gum gardens fire grain crops and fallow is now breaking down; the 1968-1973 drought having in many areas delivered the final blow. Because of a growing population the cultivation period is extended and the soil becomes impoverished. Overgrazing in the fallow period and the lopping of gum trees for firewood is producing a low return on the gum trees. Without this gum to harvest for cash farmers must repeatedly replant their subsistence crops until the land becomes useless sand. The Sudanese have recognized the problem earlier than most and a number of imaginative and practicable pilot projects are already in use: 1) waterpoint management; 2) construction of firebreaks; 3) land threatened by shifting dunes has been enclosed by stockproof fence and afforested with local trees; and 4) shelter belts have been planted around town perimeters where old gum tree stumps have started to sprout and the grass is reseeding itself. Out of these pilot projects and with the advice of the U.N. Environment Program the U.N. Development Program and FAO the Sudanese have developed a modest $26 million desert encroachment control and rehabilitation program (DECARP).

Fireproofing composition comprising sodium silicate, gum arabic or other gum, and a water dispersible polymer selected from the class of epoxy polymers, natural latices and synthetic latices

Abstract: Fireproofing composition comprising sodium silicate, gum arabic (or other gum) and a water dispersible polymer

Nutritive seamoss composition and method for preparing same

Abstract: An edible seamoss composition containing water, gum arabic, dry linseed, seamoss, milk sweeteners and flavoring. The composition may be used as a base for stabilized drinks.

Manufacture of microcapsule

Abstract: PURPOSE:To obtain microcapsule which does not adhere to reactor from a high concentration but low viscosity of a capsule solution consisting of malamine and a formaldehyde resin, together with gum arabic and an ammonium salt. CONSTITUTION:Melamine and a formabldehyde resin in a formaldehyde resin/ melamine molal ratio=approx. 2-3 are dissolved in an aqueous solution of gum arabic, containing gum arabic in a gum arabic/melamine ratio=approx. 0.1-4 by weight. The aqueous gum arabic solution so obtained is heated with stirring to separate the melamine-formaldehyde polymer as a liquid solution phase, and then the particles of a core substance, e.g., natural mineral oil, an animal oil, etc., are enclosed by the liquid solution phase and the polycondensation reaction of the liquid sooution phase is continued to form an insoluble capsule wall. The polycondensation reaction is accelerated by the addition of an ammonium salt, e.g., ammonium chloride, etc. This method is most useful in the manufacture of microcapsule for pressure-sensitive recording papers, and can provide a 2-8 micron size of capsules from an enriched but low viscosity capsule solution at lower cost without the use of an exoensive high-molecular electrolyte, as in the conventional methods.

EFFECT OF pH ON VOLATILE RETENTION IN FREEZE-DRIED MODEL SOLUTIONS

Abstract: The retention level of several essential oil components in freeze-dried solutions of sucrose and gum arabic was found to be dependent on the tial pH of the solution. In such carbohydrate solutions the presence of an acid or a base was found to enhance volatile retention. Retention values were found to be lowest near neutral pH values.

Effect of gum Arabic on aminopyrine demethylation in rats

Abstract: Stimulation of aminopyrine demethylation induced in rats by oral or i.p. administration of phenobarbital was partially inhibited in animals receiving daily treatments of 2×200 mg/kg gum Arabic p.o.