以淀粉为研究对象，通过化学反应将强亲水性基团引入淀粉分子内，大幅度提高其吸水和保水能力，制备了改性淀粉保润剂；确定制备反应条件为：过氧化氢用量10%、反应温度60 ℃、反应时间3 h；通过对平衡含水率的测定，对改性淀粉保润剂与常见的烟用保润剂的保润性能进行了比较。结果表明：该改性淀粉保润剂的保润性能优于常见的烟用保润剂（丙二醇、甘油和山梨醇）。

Strong hydrophilic group was introduced in the starch molecular by chemical reaction, greatly increasing water absorption properties and holding capacity. Reaction conditions for the production were determined as 10% of hydrogen peroxide amount, 60 ℃ of the reaction temperature, 3h of reaction time. The moistening performance of modified-starch humectants and traditional humectants were compared. The result showed that the moistening performance of modified-starch humectants was better than that of the traditional one.

新型烟用保润剂研究（粤烟工【2008】科字第009号）