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| The inhibiting effect on inhibition of chlorella growth by liverwort aqueous extract |
| LU Shi-huan1, CHEN Bin1, YIN Lu1, HAO Xiao-jing1, DING Jia-feng1, WANG Chang-zhi2, WANG Xiao-min2, MEI Rong-wu2, WU Yu-huan1, ZHANG Hang-jun1 |
1. College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310018, china;
2. Environmental Science Research and Design Institute of Zhejiang Province, Hangzhou 310012, china |
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Abstract The suppressive effect of liverwort aqueous extract on chlorella growth was studied and a cheap, efficient and low-toxic algicide was selected. Thus, the difference in suppression effect of liverwort and extensive straw on chlorella growth was also compared and analyzed. The inhibition of chlorella growth reached 88.17% after culturing 120h in 0.5g/L liverwort aqueous extract, while, the inhibition of the straw aqueous extract only reached 66.28%. The inhibition of liverwort aqueous extract showed better efficacy than straw aqueous extract at the same conditions. The high concentration of liverwort aqueous extract (25g/L) could reduce the photosynthetic activity of chlorella, while low concentration of liverwort aqueous extract (1g/L) revealed insignificant effects on the photosynthetic activity of chlorella. Compared the suppressive effect of ethanol and deionized water extracts on chlorella, the organic allelopathic components of liverwort aqueous extract inhibited the growth of chlorella. Moreover, the algal inhibition effect of liverwort aqueous extract was similar to three single flavonoids, which were myricetin, parsley and lutein.
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Received: 26 July 2019
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