Page 120 - 《精细化工》2020年第12期

第 37 卷第 12 期 精 细 化 工 Vol.37, No.12
2020 年 12 月 FINE CHEMICALS Dec. 2020

功能材料
金樱子果渣中脂肪酸与玉米淀粉包合物的制备及性能

*
郑成娟，李珊珊，陈 青
（贵州大学 化学与化工学院，贵州 贵阳 550025）

摘要：以废弃物金樱子果渣、玉米淀粉为原料，制备玉米淀粉脂肪酸包合物。采用索氏法提取金樱子果渣中的
种子油，尿素包合法纯化种子油中的不饱和脂肪酸，纯化后亚油酸和油酸的色谱含量高达 99%。以吸附偶氮染
料刚果红为评价指标，通过星点设计-响应面法优化包合工艺，并采用 IR、TG 及 SEM 对包合物进行了表征。
得到的最优包合工艺条件为：玉米淀粉与脂肪酸的质量比为 8∶1，包合时间 82 min，包合温度 51 ℃，在该条
件下得到的包合物对刚果红的吸附率为 91.65%，与理论值 93.18%接近。IR、TG 和 SEM 测试结果表明，包合
物已经形成；包合物的热稳定性低于玉米淀粉。SEM 测试结果表明，包合物表面存在大量的孔洞结构。
关键词：金樱子；玉米淀粉；星点设计响应面法；吸附；刚果红；功能材料
中图分类号：X703；TQ424 文献标识码：A 文章编号：1003-5214 (2020) 12-2482-08

Preparation and properties of inclusion compound of

corn starch and fatty acid in Rasa laevigata pomace

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ZHENG Chengjuan, LI Shanshan, CHEN Qing
（College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China）

Abstract: Corn starch fatty acid inclusion compound was prepared from the waste of Rosa laevigata
pomace and corn starch. The seed oil from Rosa laevigata pomace was extracted with Soxhlet extraction
method. The unsaturated fatty acids in the seed oil were purified with urea adduction fractionation method,
and the GC content of linoleic acid and oleic acid was up to 99%. Using the adsorption rate of azo dye
Congo red as evaluation index, the inclusion process was optimized by central composite design-response
surface methodology, and the inclusion compound was characterized by IR, TG and SEM. The results
showed that the optimal inclusion process was obtained as follows: the mass ratio of corn starch to fatty
acid was 8∶1, the inclusion time was 82 min, and the inclusion temperature was 51 ℃. Under these
conditions, the prepared inclusion compound exhibited an adsorption rate of Congo red of 91.65%, which
was close to the theoretical value of 93.18%. IR, TG and SEM results indicated that the inclusion compound
was successfully formed, and the thermostability of the inclusion compound decreased. There were a
number of holes on the surface of the inclusion compound.
Key words: Rosa laevigata Michx; cornstarch; central composite design-response surface method;
adsorption; Congo red; functional materials

金樱子（Rasa laevigata Michx）属蔷薇科植物， 肪酸——亚油酸和油酸，是人体所必需的脂肪酸，
[3]
主要分布于贵州、云南、四川等地 [1-2] 。贵州省金樱 可以预防多种疾病 。
子植物资源丰富，民间用于提炼糖和泡酒。金樱子 中国是染料生产大国，在生产加工过程中，大
在加工过程中产生大量果渣，造成环境污染和资源 量染料随废水排出，其中偶氮染料占全部染料的
浪费。从金樱子果渣中提取的种子油富含不饱和脂 2/3，具有成分复杂、水量大、COD 浓度高、难降解

收稿日期：2020-07-18; 定用日期：2020-10-14; DOI: 10.13550/j.jxhg.20200656
基金项目：贵州省优秀青年科技人才项目（黔科合平台人才[2017]5613）
作者简介：郑成娟（1995—），女，硕士生，E-mail：904420871@qq.com。联系人：陈 青（1974—），女，教授，E-mail:
chenqingluck@163.com。