Antioxidant Capacities of Fruit Extracts of Five Mulberry Genotypes with Different Assays and Principle Components Analysis

Figures & data

Table 1 Two-way ANOVA for TPC, DPPH-SC, FRAP, and ORAC of five genotypes and three maturity stages of mulberry fruit. ^a

Stage	Genotype	TPC ^b	DPPH-SC ^c	FRAP ^d	ORAC ^e
Unripe	Miaoli No. 1	1104±46	442±66	10.4±0.2	16.5±3.2
	73C020	1283±23	993±117	9.5±0.3	20.8±4.4
	46C019	1258±54	785±186	10.4±0.5	17.9±0.8
	74H3023	1582±188	1104±43	10.5±0.7	13.4±1.2
	68H22024	494±35	2094±275	6.9±0.2	14.0±1.2
Medium ripe	Miaoli No. 1	1078±54	927±55	8.5±0.1	16.7±3.1
	73C020	475±22	829±339	9.5±0.3	13.1±1.4
	46C019	860±24	1032±262	6.7±0.1	14.7±0.5
	74H3023	1162±14	550±20	5.5±0.1	16.4±2.4
	68H22024	816±41	570±114	9.1±0.3	14.1±0.1
Fully ripe	Miaoli No. 1	1353±87	2030±768	21.2±0.3	29.1±4.1
	73C020	1743±77	1992±323	21.2±0.2	22.0±1.6
	46C019	2392±103	1769±609	16.8±0.1	22.0±0.3
	74H3023	2247±102	2028±213	15.6±0.3	22.9±2.0
	68H22024	1157±276	1283±42	5.3±0.2	8.4±0.5
LSD0.05 significance
Genotype [G]		*	–	*	*
Stage [S]		*	*	*	*
G × S		*	*	*	*
^aTPC: total phenolic contents; DPPH-SC: DPPH-scavenging activity; FRAP: ferric reducing antioxidant power; ORAC: oxygen radical absorbance capacity. Data are represented as the means ± SD (n = 4).
^bData are expressed as mg gallic acid equivalent (GAE)/100 g FW.
^cData are expressed as μg BHT equivalent/g FW.
^dData are expressed as mM ascorbic acid equivalent/100 g FW.
^eData are expressed as μM Trolox equivalent/g FW. -: Not statistically significant (P > 0.05).

Figure 1 Loadings and scores plots of principle components analysis. (A) Loadings plot for results of four different antioxidant assays. TPC: total phenolic contents; DPPH-SC: DPPH-scavenging activity; FRAP: ferric reducing antioxidant power; ORAC: oxygen radical absorbance capacity. (B) Scores plot for the five genotypes of mulberry. PC1: first principle components; and PC2: second principle components.