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Please use this identifier to cite or link to this item: https://scholars.tari.gov.tw/handle/123456789/6672
Title: Effect of Antioxidant Activity and Functional Properties of Chingshey Purple Sweet Potato Fermented Milk by Lactobacillus acidophilus, L. delbrueckii subsp. lactis, and L. gasseri Strains
Authors: Tsung-Yen Wu 
Cheng-Chih Tsai
Yi-Ting Hwang
Tsai-Hsin Chiu
Keywords: anthocyanin;antioxidant activity;Lactobacillus;ORAC;purple sweet potato
Issue Date: Jan-2012
Publisher: Wiley
Journal Volume: 77
Journal Issue: 1
Start page/Pages: M2-M8
Source: Journal of Food Science 
Abstract: 
In this study, individual selected lactic acid bacteria strains Lactobacillus acidophilus (LA), L. delbrueckii subsp. lactis (LDL), and L. gasseri (LGA) were grown in Chingshey purple sweet potato (CPSP) substrate/media. CPSP is rich in anthocyanin, which possesses antioxidant activity and in vitro cell assay. The antioxidant ability and functional properties of the fermented milk were examined. High-performance liquid chromatographic (HPLC) method was used to analyze the free amino acid, organic acids, and anthocyanin content. Total phenolic compounds, scavenging effects of 1,1-diphenyl-2-picyl-hydrazyl (DPPH) radicals, and scavenging effects of superoxide anion radicals were determined to evaluate the antioxidant ability of the samples. The cell proliferation of the fermented PSP milk was evaluated by 3-(4,5-dimethyldiazol-2-yl)-2,5 diphenyl Tetrazolium Bromide (MTT) assay. The result indicated that the antioxidant ability of the fermented CPSP milk through LA, LDL, and LGA strains was significantly higher than CPSP. The main anthocyanins present in the samples are cyanidin and delphinidin. MTT assay has revealed that incubation with both PSP and fermented CPSP milk prevented the cell death of macrophage-like RAW264.7 cells. The potential health benefit of fermented PSP milk through LA, LDL, and LGA strains makes the further application of CPSP in health food highly worthwhile.
URI: https://scholars.tari.gov.tw/handle/123456789/6672
https://ift.onlinelibrary.wiley.com/doi/10.1111/j.1750-3841.2011.02507.x
ISSN: 0022-1147
DOI: 10.1111/j.1750-3841.2011.02507.x
Appears in Collections:SCI期刊

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