Physicochemical characterization of isolated nanocrystals in starch and isolated rice starch: A new perspective

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-09-30 DOI:10.1016/j.foodchem.2025.146590

Porfirio E. Martinez-Munoz, Elsa Gutierrez-Cortez, Margarita I. Hernandez-Urbiola, Adriana Lopez-Leon, Oscar Y. Barron-Garcia, Mario E. Rodriguez-Garcia

引用次数: 0

Abstract

In this work, isolated rice starch (IRS) (Oryza sativa cv. large grains) from the macro to the nanoscale is investigated. IRS contains P, Mg, K, Mn, Na and Ca as well as traces of Fe, Si, Al, and Zn. The internal structure of IRS consists of nanometric rings with a thickness of 50–70 nm containing nanocrystals isolated by an acidic method (INCs). The X-ray pattern in starch is generated by nanocrystals with orthorhombic crystal structure confirmed by transmission electron microscopy images (3–6 nm and a length of 15–25 nm). After gelatinization this pattern appears amorphous. IR and Raman of IRS and isolated nanocrystals show that the spectrum of starch is the superposition of their individual components. TEM-energy dispersive spectroscopy showed that the INCs are composed of C, O, and H, and contain traces of Ca, P, Mg, and Na.

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淀粉和大米淀粉分离纳米晶的理化性质：一个新视角

在本研究中，分离的水稻淀粉（IRS） (Oryza sativa cv。从宏观到纳米尺度对大颗粒进行了研究。IRS含有P、Mg、K、Mn、Na和Ca，以及微量的Fe、Si、Al和Zn。IRS的内部结构由厚度为50-70 nm的纳米环组成，其中含有通过酸性方法分离的纳米晶体（INCs）。淀粉中的x射线模式是由具有正交晶型结构的纳米晶体（3-6 nm，长度15-25 nm）产生的，透射电镜图像证实了这一结构。糊化后，这种图案出现无定形。红外光谱和拉曼光谱表明，淀粉的光谱是它们各自组分的叠加。tem能量色散谱分析表明，碳纳米管主要由碳、氧和氢组成，并含有微量的钙、磷、镁和钠。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.