Optimization of Saccharification and Liquefaction of Potato Juice
Concentrated juice,as the remaining liquid after the production of potato oral liquid,contains rich nutrients.Tak-ing it as raw material,the optimal liquefaction and saccharification process conditions of concentrated juice were studied by single factor test and orthogonal test.The results showed that the optimal liquefaction parameters were as follows:α-amylase dosage 0.5％,pH 6.2,temperature 55℃,liquefaction 45 min;The optimum conditions of saccharification were obtained as follows:saccharification enzyme 0.2％,pH value 6.0,temperature 65 ℃,saccharification 75 min.Under the optimized liquefaction and saccharification conditions,the reducing sugar content in potato concentrated juice was higher,which was 20.6 g/L and 37.6 g/L respectively,which could lay a foundation for the further development and utilization of the following concentrated juice.
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