Study on removing peel of chestnut by enzymatic hydrolysis

The processing conditions of chestnut’s peel removed by enzymes were studied.Using chestnut’s peeling rate, sensory evaluation and hardness index as parameters, the optimum hydrolysis conditions by the complex enzymes with pectinase and cellulosease were obtained through the single factor and orthogonal test.It indicated that the peeling rate was 90%, when each enzyme mass concentration of pectinase and cellulosease was 1.0g/L, reaction pH was 4.5, reaction temperature was 50℃, reaction time was 15 minutes and the ratio of solid to liquid was 1∶3 (g/mL) . Under this condition, the peeling rate could reach 90%, the processed chestnut’s hardness was 12029.6g, it kept high quality with natural golden yellow color and popular appearance.