以工业生产中鲜榨柠檬原汁为试材,研究了不同商业树脂对鲜榨柠檬汁脱苦效果的影响。结果表明:大孔吸附树脂对柚皮苷和柠檬苦素的吸附率优于离子交换树脂,且对营养成分的影响较小;优选出的大孔吸附树脂R6在达到吸附平衡时对柚皮苷和柠檬苦素的吸附率最大,分别达82.87%和69.13%,且吸附时间较短,其对柚皮苷和柠檬苦素的吸附等温线分别与Langmuir经典方程式和Freundlich经典方程式拟合度最好,具有良好的静态吸附性能。

This experiment used 8 kinds of macroporous adsorption resins and 5 kinds of ion exchange resins to test the debittering effect on freshly squeezed lemon juice. The adsorption and elution of naringin、limonins and the loss rate of nutrition in juice were the valuation indexes. The results showed that the macroporous adsorption resins for adsorption rate of naringin and limonins were better than the ion exchange resins and effect on nutrient content was less than ion exchange resins. R6 macroporous adsorption resin was the best at adsorption rate of naringin and limonins with 82. 87% and 69. 13% respectively,and its adsorption time was shorter. Besides,it best fit with the classical langmuir and freundlich equation,and had a good adsorption performance.