非靶向代谢组学分析研究高品质哥伦比亚可可豆的差异。

Untargeted Metabolomics Analysis for Studying Differences in High-Quality Colombian Cocoa Beans.

机构信息

Escuela de Química, Universidad Industrial de Santander, Bucaramanga 680002, Colombia.

出版信息

Molecules. 2023 May 31;28(11):4467. doi: 10.3390/molecules28114467.

Abstract

Colombia is a producer of fine cocoa, according to the International Cocoa Organization; however, most of its exports are in the ordinary cocoa category. To remedy this situation, several national organizations are working to create technological platforms for small producers to certify the quality of their beans. The objective of this study was to identify differential chemical markers in 36 cocoa bean samples from five Colombian departments and associate them with cocoa quality properties. For this purpose, a non-targeted metabolomics approach was performed using UHPLC-HRMS, along with sensory and physicochemical analyses. The 36 samples did not differ in sensory quality, polyphenol content, and theobromine/caffeine ratio. However, the multivariate statistical analysis allowed us to differentiate the samples into four clusters. In addition, a similar grouping of the samples was also observed in the physical analyses. The metabolites responsible for such clustering were investigated with univariate statistical analysis and presumptively identified by comparison of experimental mass spectra with those reported in databases. Alkaloids, flavonoids, terpenoids, peptides, quinolines, and sulfur compounds were identified as discriminants between sample groups. Here, it was presented the metabolic profiles as an important chemical feature for further studies in quality control and more specific characterization of fine cocoa.

摘要

哥伦比亚是优质可可的生产国,根据国际可可组织的说法;然而,其大部分出口产品都属于普通可可类别。为了改善这种情况,几个国家组织正在努力为小生产者创建技术平台,以认证其豆的质量。本研究的目的是在五个哥伦比亚地区的 36 个可可豆样本中识别出差异化学标志物,并将其与可可质量特性相关联。为此,使用 UHPLC-HRMS 结合感官和物理化学分析,进行了非靶向代谢组学方法。36 个样本在感官质量、多酚含量和可可碱/咖啡因比方面没有差异。然而,多元统计分析允许我们将样本分为四个聚类。此外,在物理分析中也观察到了类似的样本分组。使用单变量统计分析研究了导致这种聚类的代谢物,并通过将实验质谱与数据库中报道的质谱进行比较来推测鉴定。生物碱、类黄酮、萜类、肽、喹啉和硫化合物被鉴定为样品组之间的区别因素。在这里,呈现了代谢谱作为进一步进行质量控制研究和更具体地对优质可可进行特征描述的重要化学特征。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5bb4/10254285/fdc160d96f9f/molecules-28-04467-g001.jpg

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