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

Table 1

Training set and validation set of gelatin samples with six different adulteration levels.

Category	Training set	Validation set	Total number
Pure edible gelatin	9	11	20
4 : 1 adulterated gelatin	13	7	20
3 : 2 adulterated gelatin	13	5	18
2 : 3 adulterated gelatin	13	7	20
1 : 4 adulterated gelatin	12	6	18
Pure industrial gelatin	15	3	18
Total number	75	39	114