Near-infrared spectral data have been correlated with the viscoelastic property storage modulus, G?, for mixtures of five biopolymers using multivariate analysis. Gels containing Na-?-carrageenan (0.5-1.0%) mixed with locust bean gums with two different mannose to galactose ratios, ?s-casein and/or ?-casein (0.05%, polymer concentration) in 0.25 M NaCl have been studied. Forty-two experiments based on a multivariate, central composite circumscribed design (CCC) were performed. Partial least square, PLS, regression was used to find a model relation between NIR transmittance spectra, recorded at 15°C in the wavelength interval 400-2500nm, and the G? for the biopolymer gels at 15°C. Depending on sample composition, the G? varies between 0 and 3500 Pa. Cross-validation led to a model based on 11 principal components with a correlation coefficient of 0.85 and a root mean square error of prediction of 540 Pa.