Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11093
Title: Molecular properties and antioxidant activities of polysaccharide-protein complexes from selected mushrooms by ultrasound-assisted extraction
Authors: Cheung, YC
Siu, KC
Liu, YS
Wu, JY 
Keywords: Molecular weight
Mushrooms
Polysaccharides
Proteins
Ultrasonic extraction
Issue Date: 2012
Publisher: Elsevier
Source: Process biochemistry, 2012, v. 47, no. 5, p. 892-895 How to cite?
Journal: Process biochemistry 
Abstract: Ultrasound-assisted extraction (UAE) was evaluated for isolation of polysaccharide-protein (PSP) complexes from three important medicinal mushrooms (Grifola frondosa, Coriolus versicolor and Lentinus edodes). Compared with those of conventional hot-water extraction (HWE), the PSP yield of UAE was similar with G. frondosa, notably higher with L. edodes but lower with C. versicolor, and the extraction rate of UAE was notably higher with G. frondosa and L. edodes but much lower with C. versicolor. The PSPs from all three mushrooms by UAE had higher protein but lower carbohydrate contents than those by HWE, and their molecular weight (MW) profiles exhibited an overall shift to lower MW and a major low-MW peak near 1.0 kDa. All PSPs from UAE but none from HWE exhibited 3-4 distinct protein bands between 10 and 130 kDa. The antioxidant activities of PSPs extracted by UAE were generally higher than those by HWE.
URI: http://hdl.handle.net/10397/11093
ISSN: 1359-5113
EISSN: 1873-3298
DOI: 10.1016/j.procbio.2012.02.004
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