. 2011 Sep 4;51(3):449–457. doi: 10.1007/s13197-011-0512-z

Table 2.

Correlation coefficient (r) between average values of antioxidant activities of shrimp waste protein hydrolysate varied with concentration, temperature, time and pH

	pH	Temperature	Time	Concentration of SWPH
ABTS and DPPH activity	−0.51	0.71^a	0.75	0.97^b
DPPH and FRAP activity	0.758^a	0.93	0.91^a	0.95^b
ABTS and FRAP activity	−0.11	0.72^a	0.85^a	0.98^b

^aCorrelation is significant at the 0.05 level (2-tailed)

^bCorrelation is significant at the 0.01 level (2-tailed)