Authors: KyongHwa Kang ZhongJi Qian BoMi Ryu SeKwon Kim
Publish Date: 2011/02/28
Volume: 20, Issue: 1, Pages: 183-191
Abstract
Microalgae are major primary producers of organic matters in aquatic environments through their photosynthetic activities Benthic diatom Navicula incerta is the major component of phytoplankton and also relatively easy to cultivate used as live food source in aquaculture The growth characteristics of N incerta were estimated under combinations of temperature salinity and light and also its composition and antioxidant activities were determined The maximum cell density of 87×105cells/mL was reached at 20°C 250 μmol/m2·sec 33‰ salinity pH 83 1212 lightdark and F/2 medium on 2 weeks of the culture period The antioxidant enzymatic hydrolysates efficiently quenched different free radicals 11diphenyl2pycrylhydrazyl DPPH pepsin IC50=1960 μg/mL hydroxyl αchymotrypsin IC50=1020 μg/mL and superoxide neutrase IC50=1690 μg/mL These results suggest that the enzymatic hydrolysate from N incerta acts as a candidate against antioxidant and could be used as a potential functional food ingredient
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