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Table 2 Estimation of plant extraction yield, total phenolics, flavonoids, tannins, antioxidant capacity and reducing power of Brachychiton populneus leaves

From: Estimation of phytochemical constituents and in vitro antioxidant potencies of Brachychiton populneus (Schott & Endl.) R.Br.

Sample Yield (g)g Total phenolic contents expressed as gallic acid equivalents (mg/g of extract) Total flavonoid contents expressed as rutin equivalents (mg/g of extract) Total tannin content expressed as gallic acid equivalents (mg/g of extract) Total antioxidant capacity expressed as ascorbic acid equivalents (mg/g of extract) Total reducing power expressed as ascorbic acid equivalents (mg/g of extract)
BPM 50 156.6 ± 1.17d 99.1 ± 1.05d 280.43 ± 0.5c 685.4 ± 2.05c 885.4 ± 2.06d
BPH 13 139.4 ± 2f 70.9 ± 2f 53.8 ± 0.36f 555.6 ± 1.1e 822.3 ± 1.8f
BPC 7.8 149.2 ± 2.1e 78.6 ± 1.3e 72.5 ± 0.65e 592.5 ± 1.37d 850.19 ± 2.6e
BPE 1.5 174.4 ± 1.2b 119.7 ± 2.1b 383.63 ± 0.8a 759.03 ± 2.28b 956.2 ± 1.71b
BPB 8.5 162.9 ± 0.9c 107.7 ± 1.4c 235.3 ± 0.6d 685.4 ± 1.29c 933.6 ± 3.04c
BPA 17 189.2 ± 1.6a 126.7 ± 1.15a 351.17 ± 0.7b 851.65 ± 2.2a 988.34 ± 2.1a
  1. BPM: B. populneus methanol extract; BPH: B. populneus n-hexane fraction; BPC: B. populneus chloroform fraction; BPE: B. populneus ethyl acetate fraction; BPB: B. populneus butanol fraction; BPA: B. populneus aqueous fraction
  2. Each value is represented as mean ± SD (n = 3). Means with different superscript (a−f) letters in the rows are significantly (p < 0.01) different from one another
  3. gYield of BPM is based on the dry powder; the yield of its fractions is based on the yield of BPM