本丈就新生柠檬酸钙沉淀对赤砂糖回溶糖浆澄清脱色效果进行了研究,通过正交试验,研究了氢氧化钙用量、柠檬酸用量、反应温度,反应时间以及聚丙烯酰胺用量等因素对赤砂糖回溶糖浆澄清脱色效果的影响,确定了澄清脱色的最佳工艺条件以及柠檬酸在制糖工业的应用前景。研究表明:当固体氢氧化钙与回溶糖浆(10°Bx)重量比为0.5:100,柠檬酸(1mol/L)与回溶糖浆体积比为1.9:100、反应时间25min、反应温度65℃、PAM用量7ppm时,脱色率可达80%。
In this paper, the mixed brown sugar juice was decoloured by citric acid. The effects of citric acid dosage, reaction temperature, reaction time and PAM dosage were discussed, and the optimum conditions were obtained as the following: citric dosage 1.9 mL, time 25 rain, temperature 65℃ and PAM dosage 7 ppm. The largest decolouring rate is 80%.