Figure 1From: Housefly larvae hydrolysate: orthogonal optimization of hydrolysis, antioxidant activity, amino acid composition and functional propertiesComparison of the degree of hydrolysis (DH) among several improved test conditions of the first step (the lines) and the second step (the bars) determined by orthogonal experiments. Different small letters for each step indicate significant differences (Duncan’s new multiple-range test, p < 0.05). Five factors and three levels at each factor were listed in Table 2.Back to article page