Physicochemical Properties of Starches from Lotus Rhizomes Harvested in Different Months.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2019-05-21 eCollection Date: 2019-01-01 DOI:10.5458/jag.jag.JAG-2018_0010

Yuji Honda, Tetsuya Yamazaki, Naoya Katsumi, Naoko Fujita, Kenji Matsumoto, Masanori Okazaki, Shoji Miwa

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Abstract

We investigated the physicochemical properties of starches extracted from 8 lotus (Nelumbo nucifera Gaertn.) rhizomes harvested in different months (September 2012 to May 2013). The physicochemical properties of the lotus starches depended on the harvest date. The peak viscosity (PV) in the Rapid Visco-Analyser analysis, and the viscosity at 65 °C (V₆₅) in the rotational viscometer analysis were significantly lower in SEP starch (extracted from the September-harvested sample) than in the other lotus starches. The Spearman's rank correlation coefficients of potassium ion (K) content vs. V₆₅ and of K content vs. PV were 0.905 and 0.714, respectively, indicating that potassium ions are important for expressing the pasting properties of lotus starch. Principal component analysis suggested that the potassium, magnesium, calcium, and phosphorus contents are important for displaying both the pasting and gelatinization properties of the lotus starches. Meanwhile, the cluster analysis revealed that physicochemical properties of the SEP starch were different from those of the starches harvested in other months.

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不同月份收获的莲花根茎淀粉的理化性质

我们研究了在不同月份（2012 年 9 月至 2013 年 5 月）从 8 个莲子（Nelumbo nucifera Gaertn.）根茎中提取的淀粉的理化性质。莲子淀粉的理化性质取决于收获日期。快速粘度分析仪分析中的峰值粘度（PV）和旋转粘度计分析中的 65 °C 粘度（V65）在 SEP 淀粉（从 9 月采收的样品中提取）中明显低于其他莲子淀粉。钾离子（K）含量与 V65 值以及 K 含量与 PV 值的斯皮尔曼秩相关系数分别为 0.905 和 0.714，表明钾离子对表现荷花淀粉的糊化性能非常重要。主成分分析表明，钾、镁、钙和磷的含量对莲子淀粉的糊化和糊化性能均有重要影响。同时，聚类分析显示，SEP淀粉的理化性质与其他月份收获的淀粉不同。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.