Abstract:
:Trichoderma harzianum NBRI-1055 was used, as fungal candidate to enhance the antioxidant activities of soybean matrix by modulating polyphenolic substances during solid-state fermentation. Trichoderma-fermented soybean (TFS) and unfermented soybean (UFS) products were extracted with water (W) and methanol (M). Total phenolic content of TFS-W and TFS-M extracts were significantly higher than that of UFS-W and UFS-M extracts. The effectiveness of extracts for total flavonoid content, antioxidant activity, free radical scavenging activity, reducing power, lipid peroxidation, metal ions-chelation, hydroxyl and superoxide radicals scavenging properties in descending order was TSF-W>TSF-M>USF-M>UFS-W. TFS extracts demonstrated significant protection against oxidative DNA and protein damages caused by hydroxyl radicals. For the specific phenolics profile, HPLC analysis was performed, which showed that the TFS extracts were also higher in isoflavones, flavonoids and phenolic acids, suggesting that this strategy may help to enhance TFS as potential antioxidants for use in preparation of soy food products.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Singh HB,Singh BN,Singh SP,Nautiyal CSdoi
10.1016/j.biortech.2010.03.057subject
Has Abstractpub_date
2010-08-01 00:00:00pages
6444-53issue
16eissn
0960-8524issn
1873-2976pii
S0960-8524(10)00534-1journal_volume
101pub_type
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