苹果渣氧化纤维素的制备及表征

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  • 1(陕西科技大学,食品与生物工程学院,陕西 西安,710021)2(陕西海升集团,陕西 西安,710100)
李列琴,硕士研究生,研究方向为食品科学与工程。E-mail:1327068757@qq.com

网络出版日期: 2018-03-16

基金资助

陕西省科技统筹创新工程计划项目(2016KTCL02-32);陕西省自然科学基础研究计划项目(2017JQ3036)

Preparation and characterization of apple pomace oxidized cellulose

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  • 1(School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China) 2(Shaanxi Haisheng Group, Xi’an 710100, China)

Online published: 2018-03-16

摘要

在非均相体系中,以高碘酸钠为氧化剂制备苹果渣氧化纤维素。以醛基含量及样品保留率为评价标准,通过单因素、正交试验优化其制备工艺并表征。结果表明苹果渣纤维素最优氧化工艺为:料液比1:25(g/mL),高碘酸钠浓度0.6 mol/L,时间4 h,温度45 ℃;此时氧化纤维素醛基含量达到最高值为6.02 mmol/g,样品保留率81.33%。红外光谱、X-射线衍射及持水力测定结果表明,氧化纤维素具有醛基的特征谱峰,结晶度明显下降,持水力增加,这为其今后更广泛应用奠定了理论基础。

本文引用格式

李列琴, 陈雪峰, 刘宁, 等 . 苹果渣氧化纤维素的制备及表征[J]. 食品与发酵工业, 2018 , 44(2) : 129 . DOI: 10.13995/j.cnki.11-1802/ts.014904

Abstract

In the heterogeneous system, the apple pomace oxidized cellulose was prepared with sodium periodate as oxidant.The aldehyde content and sample retention rate were used as evaluation standard, and the preparation process was optimized by single factor and orthogonal test.The optimized oxidation process of apple pomace cellulose indicated that the solid-liquid ratio was 1: 25 (g/ml), the concentration of sodium periodate was 0.6mol/L, the time was 4h, the temperature was 45℃; this moment, the content of aldehyde group reached the highest was 6.02 mmol/g, and the sample retention rate was 81.33%. The results of FTIR, XRD and WHC showed that the oxidized cellulose had the characteristic spectrums of aldehyde group, the crystallinity decreased significantly, the water holding capacity increased, which would lay the theoretical foundation for it’s wider application.
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