Separation and Properties of Polysaccharides from Asparagus (Officinalis L) Old Stalks

Abstract:

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The polysaccharides of the asparagus old stalks was seperated by ethanol precipitation and ultrafiltration. The molecular weigh distribution and antioxidative capacity of the extracts of the alcohol precipitation(C-1), ultrafiltration retention(C-2), and ultrafiltration penetrates (C-3) were further evaluated. The polysaccharides yields of the C-1, C-2, and C-3 were 1.53, 1.21, and 0.71%, respectively. The weigh average molecular weight of C-1, C-2, and C-3 were 163900, 135880, and 61063 Da, respectively. C-2 showed the strongest antioxidant capacity in all extracts by the scavenging effect on DPPH, superoxide and hydroxyl radicals. Therefore, the ultrafiltration was an alternative to separate the polysaccharides from the asparagus old stalks and kept their antioxidatant capacity.

Info:

Periodical:

Advanced Materials Research (Volumes 361-363)

Edited by:

Qunjie Xu, Honghua Ge and Junxi Zhang

Pages:

789-793

DOI:

10.4028/www.scientific.net/AMR.361-363.789

Citation:

J. Song et al., "Separation and Properties of Polysaccharides from Asparagus (Officinalis L) Old Stalks", Advanced Materials Research, Vols. 361-363, pp. 789-793, 2012

Online since:

October 2011

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Price:

$35.00

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