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June 30, 2021MoleculesOpen Access

Examining the Performance of Two Extraction Solvent Systems on Phenolic Constituents from U.S. Southeastern Blackberries

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Randomized trial compares antioxidant properties of blackberry extracts using two solvent systems, indicating potential differences in efficacy.

The study aims to compare the effectiveness of different extraction solvent systems on phenolic constituents in blackberries and their antioxidant properties.
Two extraction methods: acidified aqueous methanol and acidified aqueous acetone.
Phenolic extracts were evaluated using H-ORACFL, FRAP, and CAA assays.
Crude extracts were fractionated by Sephadex LH-20 column chromatography.
Methanol extraction yielded 138.7 ± 9.8 mg C3G eq./100 g f.w. of anthocyanins; acetone yielded 114.6 ± 3.4 mg C3G eq./100 g f.w.
Flavan-3-ols were present in lower concentrations: 42.37 ± 2.44 mg/100 g f.w. with methanol and 51.44 ± 3.15 mg/100 g f.w. with acetone.
Overall antioxidant capacity was superior with the acetonic solvent system.

Liao et al. (2021) studied this question.

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Randomized trial compares antioxidant properties of blackberry extracts using two solvent systems, indicating potential differences in efficacy.