Effect of Low-Frequency Ultrasonic-Assisted Enzymolysis on the Physicochemical and Antioxidant Properties of Corn Protein Hydrolysates

Table 2

Analysis of variance (ANOVA) on indicator parameters obtained from the L₉ (3⁴) orthogonal experiment (, Mean ± SD). , ultrasound powers; , ultrasound on/off time; , ultrasound temperature; , ultrasound time.

Indicators	Source	Sum of squares	df	Mean; square			Sig.
DPPH IC50	Model	170.874	9	18.986		<0.05	significant
		1.260	2	0.630	102.012	<0.05	significant
		0.511	2	0.245	39.902	<0.05	significant
		0.384	2	0.192	31.070	<0.05	significant
		0.604	2	0.302	48.863	<0.05	significant
	Error	159.653	18	8.870
	Total	50178.870	27
DH	Model	50019.217	9	5557.691	626.600	<0.05	significant
		154.079	2	77.040	8.686	<0.05	significant
		11.891	2	5.945	.670	0.524
		76.142	2	38.071	4.292	<0.05	significant
		12.778	2	6.389	.720	0.500
	Error	13.700	18	.761
	Total	13191.364	27
CR	Model	13177.664	9	1464.185		<0.05	significant
		33.400	2	16.700	21.942	<0.05	significant
		0.279	2	.139	.183	0.834
		32.144	2	16.072	21.116	<0.05	significant
		0.905	2	.453	.595	0.562
	Error	13.700	18	.761
	Total	13191.364	27

Note. Differences were considered significant at .