Preliminary Studies of Chemical and Physical Properties of Two Varieties of Avocado Seeds Grown in Chile

Table 3

DPPH (IC50), FRAP antioxidant assay, inhibition positive (+), and minimum inhibitory concentration (MIC) of bacterial development of SH and SNC extracts.

		Antioxidant activity			Antibacterial activity
Seeds	Extract	TP (g·EAG/kg·dw)	IC50 (g·EAG/kg·dw)	FRAP (mmol·Fe^+2/kg·dw)	MIC (mg dw extract/mL)
					S. aureus	B. cereus	L. monocytogenes
SH	E/W	36.41 ± 4.81^a	7.12 + 1.51^a	0.40 ± 0.01^a	(+) 1172 + 20^b	(+) 1172 + 14^b	(+) 1172 + 18^c
	M/W	27.46 ± 2.14^b	7.75 + 1.32^a	0.30 + 0.01^b	(+) 3642 + 21^c	(+) 1821 + 31^c	(+) 910 + 12^b
	EA	10.12 ± 1.02^c	12.01 + 1.71^b	0.09 + 0.00^c	(+) 88 + 13^a	(+) 88 + 10^a	(+) 22 + 3^a
SNC	E/W	21.71 + 3.11^a	4.94 + 0.98^a	0.28 + 0.01^a	(+) 4182 + 51^b	(+) 522 + 17^b	(+) 4182 + 45^c
	M/W	18.66 + 2.53^b	5.97 + 1.05^b	0.22 + 0.00^b	(+) 4137 + 34^b	(+) 1034 + 21^c	(+) 1034 + 14^b
	E/A	5.93 + 1.01^c	9.54 + 1.67^c	0.05 + 0.01^c	(+) 55 + 6^a	(+) 28 + 3^a	(+) 28 + 3^a

SH = avocado seed Hass; SNC = avocado seed Negra de la Cruz; E/W = ethanol/water (50/50% v/v); M/W = methanol/water (50/50% v/v); EA = ethyl acetate; TP = total polyphenols; IC50 = 50% of capacity antiradicalary; FRAP = ferric ion-reducing antioxidant parameter; MIC = minimum inhibitory concentration. Data are expressed as the mean ± standard deviation (n = 4). Different letters (a, b, and c) within columns indicate significant differences () between samples. Values without significant differences are not indicted with letters.