In vitro antioxidant, hypoglycemic and oral glucose tolerance test of banana peels

Peer review under responsibility of Alexandria University Faculty of Medicine.

Available online 25 July 2016

Figures & data

Figure 1 Hypoglycemic effect of Musa species on normoglycemic rats. Values are statistically significant at p < 0.05. Significance determined by ANOVA followed by Dunnett’s test.

Figure 2 Effect of Musa species on glucose loaded normoglycemic rats. Values are statistically significant at p < 0.05. Significance determined by ANOVA followed by Dunnett’s test.

Table 1 In vitro antioxidant activity of ethanolic extracts of Musa cavendish and Musa acuminata fruit peel by DPPH and ferric reducing power assay.

Concentration (μg/ml)	DPPH^· radical scavenging activity			Ferric reducing power activity
	EMC	EMA	Ascorbic acid	EMC	EMA	Ascorbic acid
25	6.05 ± 0.21	12.06 ± 0.25	26.1 ± 0.23	9.25 ± 0.23	12.02 ± 0.22	32.45 ± 0.32
50	16.12 ± 0.14	22.17 ± 0.18	38.3 ± 0.46	14.84 ± 0.28	24.57 ± 0.14	46.78 ± 0.17
100	24.72 ± 0.35	40.19 ± 0.35	59.7 ± 0.19	19.06 ± 0.15	32.08 ± 0.23	59.45 ± 0.45
150	37.08 ± 0.18	53.74 ± 0.21	79.1 ± 0.14	28.06 ± 0.21	45.65 ± 0.28	78.95 ± 0.19
200	48.06 ± 0.19	76.48 ± 0.19	93.5 ± 0.89	37.05 ± 0.14	50.27 ± 0.31	86.82 ± 0.46
250	54.63 ± 0.25	89.14 ± 0.20	97.9 ± 0.45	51.03 ± 0.19	62.14 ± 0.19	98.45 ± 0.17
IC50	232.08	139.50	82.50	247.80	198.80	63.00

Results are Mean ± S.E.M. of three parallel measurements. EMC-Ethanolic extract of Musa cavendish fruit peel. EMA-Ethanolic extract of Musa acuminata fruit peel.

Table 2 In vitro antioxidant activity of ethanolic extracts of Musa cavendish (EMC) and Musa acuminata (EMA) fruit peel using H₂O₂ scavenging activity.

Concentration (μg/ml)	Hydrogen peroxide scavenging activity
	EMC	EMA	Ascorbic acid
10	15.26 ± 0.23	14.34 ± 0.32	21.27 ± 0.22
20	16.03 ± 0.28	31.45 ± 0.34	32.45 ± 0.16
30	18.09 ± 0.15	47.12 ± 0.28	46.12 ± 0.21
40	31.09 ± 0.24	56.02 ± 0.19	59.12 ± 0.18
50	52.03 ± 0.23	71.01 ± 0.26	78.49 ± 0.31
IC50	47.60	35.70	34.60

Results are Mean ± S.E.M. of three parallel measurements.