Table 3.

Correlation coefficients of total polyphenols, total flavonoids, total proanthocyanins, total triterpenes, total soluble polysaccharides, ascorbic acid, total chlorophyll, abts and dpph scavenging ability, and ferric iron-reducing antioxidant power of wheatgrass on the 21st~27th harvest day^a,b.

D21	TPC	TFC	TPAC	TTC	TSPC	AAC	TChl	ABTS	DPPH	FRAP
TPC	1	0.234	−0.016	−0.064	0.580**	0.617**	0.351*	0.443**	0.588**	0.331*
TFC		1	−0.132	−0.402**	−0.092	−0.014	0.596**	−0.242	0.538**	0.353*
TPAC			1	−0.111	0.365*	0.152	−0.111	0.146	−0.036	−0.077
TTC				1	−0.129	0.097	−0.390**	0.049	−0.169	−0.043
TSPC					1	0.599**	0.068	0.457**	0.099	0.113
AAC						1	0.120	0.123	0.104	0.266
TChl							1	−0.201	0.669**	0.408**
ABTS								1	0.179	−0.166
DPPH									1	0.517**
FRAP										1
D24	TPC	TFC	TPAC	TTC	TSPC	AAC	TChl	ABTS	DPPH	FRAP
TPC	1	0.522**	0.014	0.461**	0.517**	0.519**	−0.050	0.514**	0.248	0.479**
TFC		1	−0.035	−0.096	−0.096	−0.076	0.586**	0.121	0.611**	0.271
TPAC			1	0.042	0.034	0.012	−0.027	0.149	0.128	−0.178
TTC				1	0.734**	0.685**	−0.609**	0.384**	−0.366*	0.384**
TSPC					1	0.793**	−0.652**	0.469**	−0.458**	0.468**
AAC						1	−0.708**	0.417**	−0.518**	0.433**
TChl							1	−0.221	0.854**	−0.168
ABTS								1	0.084	0.088
DPPH									1	−0.076
FRAP										1
D27	TPC	TFC	TPAC	TTC	TSPC	AAC	TChl	ABTS	DPPH	FRAP
TPC	1	0.203	0.221	0.612**	0.741**	0.681**	−0.415**	0.589**	0.097	0.712**
TFC		1	−0.101	0.152	−0.177	−0.319*	0.498**	−0.079	0.492**	0.087
TPAC			1	0.415**	0.293*	0.303*	−0.403**	0.324*	−0.280	0.189
TTC				1	0.677**	0.549**	−0.378**	0.331*	−0.157	0.453**
TSPC					1	0.845**	−0.734**	0.542**	−0.345*	0.577**
AAC						1	−0.690**	0.516**	−0.367*	0.551**
TChl							1	−0.576**	0.555**	−0.343*
ABTS								1	0.044	0.498**
DPPH									1	−0.025
FRAP										1

^aCorrelations between the data obtained were run using a standard Pearson's correlation.

^b**P < 0.01;

^*P < 0.05 (two-tailed).