通过核磁共振光谱法检测椰子油掺入棕榈油的情况

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-02 DOI:10.3989/gya.0861231.2012

M.R. Gokul Raj, M. Priya Rani, K.B. Rameshkumar

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引用次数: 0

摘要

椰子油在食品和传统医药领域是一种昂贵的商品，其与廉价棕榈油的掺假是一个严重的问题。本研究评估了应用 1H NMR 光谱鉴定椰子油真伪以及监测椰子油掺入廉价棕榈油替代品的情况。通过核磁共振技术计算出了平均链长（14.25）、皂化指数（244.66 毫克 KOH/100 克）、分子量（652.12）、碘值（8.27 毫克/100 克）、过氧化值（0.02 meqO2/kg）和不饱和百分比（7.81%）等各种参数，并发现这些参数与湿实验室实验得出的数值一致。通过评估烯烃质子的化学位移值，可通过核磁共振检测棕榈油的掺假程度。这些发现对食品和传统医药行业都有重大影响，因为核磁共振光谱法可以取代传统的湿实验室方法，成为一种可靠而精确的分析方法。

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Detection of coconut oil adulteration with palm oil through NMR spectroscopic method

Coconut oil is a costly commodity in the food and traditional medicinal sectors and its adulteration with cheap palm oil is a serious issue. The present study evaluates the application of 1H NMR spectroscopy to authenticate coconut oil, and to monitor its adulteration with the cheap palm oil substitute. Various parameters such as average chain length (14.25), saponification index (244.66 mg KOH/100 g), molecular weight (652.12), iodine value (8.27 mg/100 g), peroxide value (0.02 meqO2/kg) and percentage of unsaturation (7.81%) were calculated through the NMR technique, and were found to be in concurrence with the values obtained from wet lab experiments. The extent of palm oil adulteration can be detected through NMR by evaluating the chemical shift values for olefinic protons. The findings have a significant impact on both the food and traditional medicine sectors, as NMR spectroscopy can replace the conventional wet lab methods as a reliable and precise method for analysis.

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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.