林产化学与工业Issue(2)：103-110,8.DOI:10.3969/j.issn.0253-2417.2015.02.016
固定化脂肪酶催化合成松香淀粉酯的研究
Catalytic Synthesis of Rosin Starch Ester by Immobilized Lipase
摘要
Abstract
The synthesis of rosin starch ester catalyzed by lipase was carried out by using the materials of rosin and cassava starch. The effects of various factors on the degree of substitution ( DS ) of rosin cassava starch ester were analyzed by single-factor experiment and response surface methodology. The optimum synthesis conditions were as follows:rosin-starch ratio 3. 6∶1 (w/w), reaction time 4. 2 h, reaction temperature 48. 5 ℃ and lipase-cassava starch amount 15%(starch mass). Under these conditions, the DS reached 0. 106. The product was characterized by FT-IR, XRD and SEM. The results showed that a C—O stretching vibration absorption peak at 1729 cm-1 was observed. This indicated that the rosin cassava starch ester was formed. Furthermore, the crystal morphology and structure of rosin cassava starch ester were changed. And the properties of rosin cassava starch ester were investigated. Compared with the pretreated starch, the emulsion capacity and emulsion stability of rosin cassava starch ester were increased by 122. 26% and 134. 16%, while surface tension and transparency were reduced by 46. 9% and 5. 22%, respectively.关键词
酯化/木薯淀粉/松香/固定化脂肪酶/响应面法Key words
esterification/cassava starch/rosin/immobilized lipase/response surface methodology分类
化学化工引用本文复制引用
李贺,林日辉,黄文勤,龙寒,刘作娇,粟佳婷..固定化脂肪酶催化合成松香淀粉酯的研究[J].林产化学与工业,2015,(2):103-110,8.基金项目
广西高校人才小高地建设创新团队资助计划项目(桂教人[2011]47) （桂教人[2011]47）
教育部留学回国人员科研启动基金资助项目([2012]1707) （[2012]1707）
广西民族大学研究生教育创新计划资助项目(gxun-chx2014097) （gxun-chx2014097）
