Table 6. Comparison between predicted and observed values of response variables within the range of the optimum condition

Functional compounds	Fermented black soybean
	Predict value (A)	Experimental value (B)	B/A×100 (%)
Yield (%)	85.44	85.58±0.331)	100.16
Amino nitrogen content (mg%)	269.95	270.02±0.81	100.03
β-Glucan content (%)	4.88	4.80±0.16	98.36
Methionine content (mg%)	379.36	378.98±9.45	99.90
Cystine content (mg%)	545.53	561.52±9.98	102.93

All values are mean±SD (n=3).