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为开发利用甘薯淀粉生产过程中的废水资源，在不影响甘薯淀粉提取率的条件下，采用高效吸附剂有效地从其中回收了甘薯β－淀粉酶．此法吸附剂用量少、成本低，１ｋｇ鲜薯可制备１１０ｇ酶制剂，每克酶活力达７万单位，总回收率在８０％以上．制备的β－淀粉酶在４０～５０℃下热稳定性好，最适ｐＨ范围６．０～６．５，最适反应温度５５℃，可溶性淀粉水解率５６．４％．应用于饴糖生产试验的结果表明，与用麦芽制备的饴糖相比，产品的组分及风味基本无差异．
In order to develop and utilize the waste water resources during the production of sweet potato starch, the sweet potato β-amylase was effectively recovered from the sweet potato starch without affecting the extraction rate of sweet potato starch. This method adsorbent dosage less, low cost, 1kg fresh potato can be prepared 110g enzyme preparation, enzyme activity per gram up to 70,000 units, the total recovery of more than 80%. The prepared β-amylase has good thermal stability at 40-50 ° C, optimum pH range 6.0-6.5, optimum reaction temperature 55 ° C, and the rate of soluble starch hydrolysis 56.4%. The results of the test used in the production of caramel showed that there was almost no difference in the composition and flavor of the product compared with the caramel prepared from malt.