PT - JOURNAL ARTICLE AU - Walter, R. H. AU - Rao, M. A AU - Cooley, H. J. AU - Sherman, R. M. TI - The Isolation and Characterization of a Hydrocolloidal Fraction from Grape Pomace AID - 10.5344/ajev.1985.36.4.271 DP - 1985 Jan 01 TA - American Journal of Enology and Viticulture PG - 271--274 VI - 36 IP - 4 4099 - http://www.ajevonline.org/content/36/4/271.short 4100 - http://www.ajevonline.org/content/36/4/271.full SO - Am J Enol Vitic.1985 Jan 01; 36 AB - A fraction of the solid phase of grape pomace was extracted using water and dilute solutions of tetra-sodium ethylenediaminetetra-acetate (EDTA), sodium hydroxide, and hydrochloric acid (HCl). The water extract resulted in the highest viscosity numbers, and the HCl extract in the lowest. By characterizing the EDTA extract, the hydrodynamically equivalent dispersions were shown to be pseudoplastic. The viscosity of the dispersions varied logarithmically with reciprocal, absolute temperature and showed a resistance to settling in the presence of electrolytes and ethanol. Thus, the extract may exhibit hydrocolloidal functionality in a wide variety of foods and beverages.