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Phytochemical and Antioxidant analysis. (a) Total phenolic (mg GAE/g) and total flavonoid (mg QE/g) contents of stem extract. (b) Berberine in stem extract. BCl, berberine chloride; BBS, B. balochistanica stem. (c) FTIR spectrum of stem extract. (d) Antioxidant activities (DPPH and TAC) of stem extract. (e) Antioxidant activities (DPPH and TAC) of BBS-NiONPs. Numerical data are presented as mean ± standard deviation (n = 3).
