螯合剂六偏磷酸钠提取甜菜果胶工艺优化.pdf

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螯合剂六偏磷酸钠提取甜菜果胶工艺优化
张海越1,刘志勇1,陈良1,“,张兵2
(1.石河了大学化学化学院/新疆兵闭化工绿色过程重点实验室/省部共建家重点实验室培育基地,
石河子832003;2.新疆绿原栟业有限公司,库尔勒841000
摘要:用钙离了螯合剂六偏磷酸钠(SIMP)滘液从甜干柏中提取果胶,并对提取工.艺进行优化。在
单因素试验的基础之上,对影果胶得率的主要因素进行 Box Benhnkcn中心组合实验设计;建立六偏憐酸钠
提取甜菜果胶的二次回模型。实验结果表明,甜来果胶的最佳提取T.艺为提取时间2.4h,螯合剂SHMP质
量分数1.25%,提取温度88℃,此时果胶产率为14.32%,与模型測值接近。同时,采川间羟联苯法测定出
果胶样品的半乳糖醛酸含量为73.12%。红外光谱的数表明,果胶样品貝有果胶分了的结构特征,并初步判
断为低蜻果胶。
关键词:甜菜干粕;果胶;提取T艺;六偏磷酸钠;螯合剂
中图分类号:'IS202.1文献标识码:A文章编号:10062513(2015)01(010706
Optimization of pectin extraction conditions from sugar beet pulp with
chelating agent sodium hexametaphosphate
ZHANG Hai-yan, LIU Zhi-yong, CHEN Liang.*, ZHANG Bing
(1. School of Chcmistry and Chcmical Enginccring, Kcy Laboratory for Grccn Proccssing of Chcmical
Enginccring of Xinjiang Bingtuan, Shihezi Univcrsity, Shihezi 832003; 2. Xinjiang Luyuan Sugar Industry
Co. Lld. Kora 841000
Abstract: Pectin was isolated with sodium hexametaphosphate (SHMP)solution from sugar beet pulp Extraction
conditions affecting the yield of pectin were optimized by Box-benhnken experimental design on the basis of single
factor tests. Ihe results showed that the oplimum cxtraction conditions of pectin from sugar beet pulp were as follows
extraction time 2.4h, mass Fraction o! SIIMP1 25 and cxtraction temperalure 88 C. Under these condilions, the
experimental extraction yield of sugarbeet pectin was 14.32%o, which was very close to the predicted one. The total
galacturonic acid content determined by meta -hydroxydiphenyl was 73.12. FT-IR results indicated that sugar beet
pectin had molecular struclurc of pectin and the primary test showed it had a low degrec of esterification
Key words: sugar beet pulp: pectin; extraction conditions; sodium hexametaphosphate; chelating agent
果胶是·种复杂的高分子多糖类化合物,主酸长链,侧链上有阿拉伯糖、半乳糖、鼠李糖等
要存在于陆生植物的初生壁和胞?层中。其基中性糖2司。果胶具有良好的胶凝性和乳化性
本骨架结构为a-1,4键连接的D-半乳糖醛在食品T.业领域,通常作为稳定剂、增稠剂和胶
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基金项目:兵团科找人员服务南疆专项(2013BA043
作者简介:张海燕(1980-),女,博十研究生,研究方向:生化分离工科。
015年第1
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