Abstract: Xanthan gum is precipitated from its fermentation broth by adding to said raw broth an effective amount of a specified aluminum salt whereby the pH of the solution is lowered to below about 3.5 and thereafter increasing the pH into the range between about 3.5 and 4.5.

Abstract: Water-absorbent crosslinked polymers are improved in their wicking capacity by treatment of their surface with glyoxal. The polymer can be a polysaccharide--acrylamide graft copolymer or a polymer or copolymer of acrylamide and/or sodium acrylate or sodium methacrylate.

Abstract: Thickened aqueous solutions are prepared by crosslinking carboxymethyl hydroxyethyl cellulose solutions in brine via polyvalent metal ions. The CMHEC employed is characterized by specified carboxymethyl and hydroxyethyl substitution levels.

Abstract: Modified polysaccharides having greatly increased water-absorbing and binding capacity are prepared by reacting a polysaccharide such as cellulose or starch in the presence of acrylamide, another vinyl monomer and a divinyl crosslinking monomer using free radical polymerization techniques. The product is believed to be a complex mixture of crosslinked grafted polysaccharide and acrylamide copolymers.

Abstract: The new compound 1,1,2,3,3,5-hexamethylindan-6-nitrile is disclosed. The compound exhibits a very strong musk odor which is greater than its commercially available ketone counterpart from which it is prepared. Its odor intensity is also greater than other known ketone musks.

Abstract: New alicyclic ketoesters having the generic formula ##STR1## wherein R represents a hydrocarbon radical containing from 4 to 8 carbon atoms, and R' represents an alkyl radical containing from 1 to 2 carbon atoms, are prepared, in one embodiment, by condensing the methyl or ethyl ester of propane-1,2,3-tricarboxylic acid with methyl or ethyl esters of 2-bromo acids containing from 6 to 9 carbon atoms, and hydrolyzing, decarboxylating and re-esterifying the resulting cyclic keto-triesters.The new compounds have olfactory properties and are useful in the production of a great variety of perfumes.

Abstract: Gels are prepared from a biologically produced beta-1,3-glucan-type polysaccharide by exposing a basic solution of the polysaccharide to an atmosphere of a gaseous acid anhydride.

Abstract: Sour milk, either chemically or biologically soured, is gelled by the use of electronegative gelling agents when a stabilizer such as a high methoxyl pectin, carboxymethyl cellulose or propylene glycol alginate is added to the milk prior to addition of the gelling agent. The presence of the stabilizer also permits the product to be pasteurized prior to gelling.

Abstract: Compositions, preferably in particulate form, comprising a cellular matrix having oil in the cells thereof in which the matrix comprises polysaccharide and polyhydroxy compounds in such proportions that the oil may constitute up to 80% by volume so stably held in the cells that the extractable oil is not substantially in excess of 5%. This is accomplished by proportioning the ingredients to produce a glassy, preferably water soluble, matrix having a plastic or flowable range that prevents or seals oil escape paths in the wall material such as cracks, fissures, pin holes and deep pits. The polysaccharides are primarily not the sweet, readily soluble saccharides like sugar but rather higher polysaccharides of the non-sweet, colloidally soluble types such as natural gums, e.g., gum arabic, starch derivatives, dextrinized and hydrolyzed starches, and the like. The polyhydroxy compounds may be alcohols, plant-type sugars, lactones, monoethers and acetals.

Abstract: Cold water gellable compositions are prepared based on the sodium salt of kappa-carrageenan and a potassium salt. Gelation is controlled so that good quality gels result by encapsulating the potassium salt in a water-soluble hydroxypropyl cellulose.

Abstract: New alicyclic ketoesters having the generic formula ##SPC1##Wherein R represents a hydrocarbon radical containing from 4 to 8 carbon atoms, and R' represents an alkyl radical containing from 1 to 2 carbon atoms, are prepared, in one embodiment, by condensing the methyl or ethyl ester of propane-1,2,3-tricarboxylic acid with methyl or ethyl esters of 2-bromo acids containing from 6 to 10 carbon atoms, and hydrolyzing, decarboxylating and re-esterifying the resulting cyclic keto-triesters.The new compounds have olfactory properties and are useful in the production of a great variety of perfumes.