不同浓度纤维素酶在双红葡萄酿酒中对颜色的影响

Effect of Different Concentrations Cellulases on Color of Shuanghong Vitis in Make Wine

以‘双红’山葡萄为试材,通过用纤维素酶处理,对葡萄进行色素提取。结果表明:红色素最大吸收波长为530 nm。得出0.03 mol/L浓度的纤维素酶水溶液的色素提取效果最好,在料液比为1∶10,浸提温度40℃条件色素浸出率较高。颜色指标稳定后,0.03 mg/L的纤维素酶处理组L*值为26.9,透明度最低;a*值为18.6,红色色调最大;c*值为29.1,颜色最深;H*值为-53.6,红色色调最重。酿酒过程中以0.03 mg/L的纤维素酶处理组的全过程曲线波动最小,颜色最稳定。

Taking ‘Shuanghong’ vitis as material,through the cellulose enzyme treatment to extraction of grape pigments.The results showed the best extraction wavelength of ＇Shuanghong＇vitis pigment was 530 nm.The results showed that the best concentration of cellulase for pigment extraction was 0.03 mol/L.When the material liquid was 1∶10 and the temperature was 40℃ conditions,the rate of pigment extraction was higher.Deal with enzymes of 0.03 mg/L to set the value of L＊ was 26.9,the transparency reaches the lowest level.The value of a＊ was 18.6;the red tone gets the top;The value of c＊ was 29.1,the color gets the bottommost level.The value of H＊ was-53.6,the red tone gets the heaviest level.By dealing with enzymes of 0.03 mg/L,the curve ranges the smallest wave and the color got the most stable level in the whole process.