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United States Department of Agriculture

Agricultural Research Service

Title: Flash Extraction of Sugar Beet Pectin

Authors
item Fishman, Marshall
item Chau, Hoa
item Hotchkiss, Arland

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: December 12, 2005
Publication Date: December 12, 2005
Citation: Fishman, M.L., Chau, H.K., Hotchkiss, A.T. 2005. Flash extraction of sugar beet pectin. Meeting Abstract, Pacifichem, International Chemical Congress of Pacific Basin Societies. Honolulu, Hawaii, December 15-20, AGRO 44.

Technical Abstract: Unheated sugar beet pulp was extracted under aqueous acidic condition by microwave heating under pressure. Temperature ranged from 45-70 C, time of heating was from 3-20 minutes and pressure from 19-75 psi. Analysis was by HPSEC with online viscosity and light scattering detection. Molar mass, radius of gyration, and intrinsic viscosity changed with the particle size of the column packing. Generally 15 micrometer size particles gave somewhat higher intrinsic viscosity, molar mass and polydispersity than 8 micrometer size particles. For samples analyzed by columns with 15 micrometer size particles, weight average molar mass ranged from 532,000-1.2 million Daltons. Radius of gyration ranged from about 35-51 nm. Polydispersity ranged from 1.78-2.58. Intrinsic viscosity ranged from about 3.00-4.30 dL/g. Recovery ranged from about 8.40-14.81% of dry weight. Log-log plots of intrinsic viscosity revealed that the compactness of sugar beet pectin is less than that of a random coil.

Last Modified: 12/19/2014
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