Evaluation of particle size on the physicochemical properties of Moringa oleifera Lam. stem powder
文献类型: 外文期刊
作者: Zhang, Yue;Liang, Kehong;Wang, Jing;Wang, Aili;Pandiselvam, R.;Zhu, Hong
作者机构:
关键词: crystallinity;cellulose;functional groups;hydrogen bonds
期刊名称: QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS
ISSN: 1757-8361
年卷期: 2022 年 14 卷
页码:
收录情况: SCIE(2022版)
摘要: Moringa oleifera Lam. stem (MOS) has been used for beneficial dietary and medicinal purposes. In this work, MOS samples of six different particle sizes were produced using sieve-based mechanical grinding to investigate the impact of varying particle sizes on the physicochemical properties of MOS powder. Scanning electron micro-scopic images revealed the destroyed fiber structures after grinding. The color turned greener and less yellow with decreasing particle size. The angle of repose significantly decreased from 70.36?? to 60.25??, as the particle size declined, demonstrating the increasing fluidity of granules. The applied mechanical treatment did not alter the primary conformational properties of MOS except for destructing the intramolecular hydrogen bonds of cellulose and hemicellulose, thereby decreasing the crystallinity and thermal stability. Surface element analysis demon-strated more carbon-rich extractives on the particle surface as the particle size reduced. This study provided rea-sons behind improved dissolution and bioavailability of functional ingredients in plant-based granular materials by reducing particle size.
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