Collagen Extraction from Malaysian Cultured Catfish (Hybrid Clarias Sp.): Kinetics and Optimization of Extraction Conditions Using Response Surface Methodology

Table 3

Analysis of variance (ANOVA) for the response surface quadratic model of the yield of PSC from muscles of Clarias  sp.

Source	Degrees of freedom	Sum of squares	Mean square	F value	P value
Model	9	54266.64	6029.63	40.54	<0.0001
Residual	10	1487.16	148.72
Lack of fit	5	1198.49	239.70	4.15	0.0722
Pure error	5	288.67	57.73
Total	19	55753.80

𝑅² = 0.9733; Dependent mean = 172.08; Adj. 𝑅² = 0.9493; CV = 7.09.