I have solubilized DPPH in methanol and used ascorbic acid as a positive control, and am testing the activity of pectins.
HI Kraifi;
maybe your DPPH went out
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22 February 2021 730 2 View
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21 February 2021 2,558 5 View
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20 February 2021 5,820 4 View
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18 February 2021 371 4 View