Near Infrared Spectroscopy Based on Supervised Pattern Recognition Methods for Rapid Identification of Adulterated Edible Gelatin

Table 3

Predicting results of SIMCA model in the training set and validation set when the significance level is 0.05 and 0.1, respectively.

Category	PCs	α = 0.05				α = 0.1
		Training set		Validation set		Training set		Validation set
		Recognition rate (%)	Rejection rate (%)	Recognition rate (%)	Rejection rate (%)	Recognition rate (%)	Rejection rate (%)	Recognition rate (%)	Rejection rate (%)
Pure edible gelatin	2	100	91	100	82	100	98	100	100
4 : 1 adulterated gelatin	7	100	100	100	100	100	100	100	100
3 : 2 adulterated gelatin	2	100	100	100	100	100	100	100	100
2 : 3 adulterated gelatin	4	100	100	100	100	100	100	100	100
1 : 4 adulterated gelatin	2	100	100	100	100	100	100	100	100
Pure industrial gelatin	4	100	100	100	100	100	100	100	100