NaOH溶液预处理马铃薯淀粉对其微观结构影响

doi:10.19677/j.issn.1004-7964.2022.04.004

皮革科学与工程 ›› 2022, Vol. 32 ›› Issue (4): 20-24.doi: 10.19677/j.issn.1004-7964.2022.04.004

NaOH溶液预处理马铃薯淀粉对其微观结构影响

闵燕^1,2, 谭琼^1,2, 陈利维^1,2, 张金伟¹, 陈慧^1,2,*

1.四川大学轻工科学与工程学院,四川成都 610065;
2.四川大学制革清洁技术国家工程实验室,四川成都 610065

收稿日期:2021-12-03 出版日期:2022-08-28 上线日期:2022-07-11
通讯作者: *陈慧（1978-）,女,副教授,E-mail:chenh@scu.edu.cn。
作者简介:闵燕（1998-）,女,硕士生,研究方向：生物质材料改性及功能化,E-mail：ctbuminyanm@163.com。
基金资助:
四川省科技计划项目（2022NSFSC 0351）

Effect of NaOH Solution Pretreatment on the Microstructure of Potato Starch

MIN Yan^1,2, TAN Qiong^1,2, CHEN Liwei^1,2, ZHANG Jinwei¹, CHEN Hui^1,2,*

1. College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China;
2. National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, China

Received:2021-12-03 Online:2022-08-28 Published:2022-07-11

摘要/Abstract

摘要： NaOH预处理淀粉是淀粉改性过程中常用的预处理方法,但是对预处理后的微观结构变化研究较少。以马铃薯淀粉为原料,2% NaOH溶液为预处理剂,获得预处理淀粉(ST_n),以水热糊化预处理淀粉（HST）为对照样,对ST_n微观结构进行了考察。结果表明,当预处理时间为10 min时,ST_n的“马耳他”十字完全消失,“B”型结晶结构消失,马铃薯淀粉颗粒形态被破坏,表面出现大量孔洞和凝胶化现象;原淀粉相对分子质量由129.48×10⁴降低至96.68×10⁴。

关键词: 马铃薯淀粉, NaOH预处理, 微观结构, 相对分子质量

Abstract: The NaOH pretreatment is a popular method for the starch modification, but there are few studies on the microstructure change after pretreatment. In this experiment, potato starch was pretreated by using 2% NaOH aqueous solution under varied time and the obtained samples were marked ST_n. In order to investigate the influence of NaOH pretreatment on the microstructure of starch, the hydrothermal gelatinized starch (HST) was taken as the control sample. Results showed that, after 10 min of pretreatment, both the Maltese cross and B-type crystal structures of ST_n disappeared completely, while the granular structure of ST_n was destroyed and there were a lot of holes and gelation phenomena on the surface. It's clear that the molecular weight of STn decreased slightly, from 129.48 ×10⁴ of original starch to 96.68 ×10⁴.

Key words: potato starch, NaOH pretreatment, microstructure, molecular weight

中图分类号:

TS234.1

闵燕, 谭琼, 陈利维, 张金伟, 陈慧. NaOH溶液预处理马铃薯淀粉对其微观结构影响[J]. 皮革科学与工程, 2022, 32(4): 20-24.

MIN Yan, TAN Qiong, CHEN Liwei, ZHANG Jinwei, CHEN Hui. Effect of NaOH Solution Pretreatment on the Microstructure of Potato Starch[J]. Leather Science and Engineering, 2022, 32(4): 20-24.

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NaOH溶液预处理马铃薯淀粉对其微观结构影响

Effect of NaOH Solution Pretreatment on the Microstructure of Potato Starch

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