Document Detail


Comparative studies on the chemical and cell-based antioxidant activities and antitumor cell proliferation properties of soy milk manufactured by conventional and commercial UHT methods.
MedLine Citation:
PMID:  20158254     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aims of this work were to compare antiproliferation, antioxidant activities and total phytochemicals and individual isoflavone profiles in soy milk processed by various methods including traditional stove cooking, direct steam injection, direct ultrahigh temperature (UHT), indirect UHT, and a two-stage simulated industry method, and a selected commercial soy milk product. Various processing methods significantly affected total saponin, phytic acid, and total phenolic content and individual isoflavone distribution. The laboratory UHT and the two-stage processed soy milk exhibited relatively higher total phenolic content, total flavonoid content, saponin and phytic acid than those processed by the traditional and steam processed methods. Thermal processing caused obvious intertransformation but did not cause severe degradation except for breaking down of aglycons. Thermal processing significantly increased antioxidant capacities of soy milk determined by chemical analyses, but decreased cellular antioxidant capacities as compared to the raw soy milk. The raw and all processed soy milk exhibited antipoliferative activities against human HL-60 leukemia cells, AGS gastric tumor cells, and DU145 prostate cancer cells in a dose-dependent manner. The raw soy milk, but not the processed soy milk, exhibited a dose-dependent antiproliferative effect against colorectal adenocarcinoma Caco-2 cells. Taken together, these results indicate that various thermal processing methods change not only phytochemcials but also potential health-promoting effects of soy milk.
Authors:
Baojun Xu; Sam K C Chang; Zhisheng Liu; Shaohong Yuan; Yanping Zou; Yingying Tan
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  58     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-03-17     Completed Date:  2010-07-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3558-66     Citation Subset:  IM    
Affiliation:
Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University-United International College, Zhuhai, China.
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MeSH Terms
Descriptor/Qualifier:
Antineoplastic Agents / chemistry*,  pharmacology
Antioxidants / analysis*,  pharmacology
Cell Line, Tumor
Cell Proliferation / drug effects*
Food-Processing Industry / methods*
Humans
Neoplasms / physiopathology
Soy Milk / chemistry*,  pharmacology*
Grant Support
ID/Acronym/Agency:
2P20RR015566/RR/NCRR NIH HHS; P20RR016741/RR/NCRR NIH HHS
Chemical
Reg. No./Substance:
0/Antineoplastic Agents; 0/Antioxidants

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