Hybrid Electronic Tongues Applied to the Quality Control of Wines

Table 5

Relative errors obtained for the quantification of color parameters using the PLS regression for a set of white wines.

Sample	Intensity of color	Tonality	CIELab
Macabeu	4.67	1.09	0.05
Parellada	4.56	3.66	Not provided
Chardonnay	0.87	2.48	0.46
Xarel·lo	7.29	4.23	0.10
Mean error (%)	4.35	2.86	0.20