Untargeted metabolomics profiling of purple rice phenolics and their antioxidant activities

IF 6 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY

LWT - Food Science and Technology Pub Date : 2024-11-27 DOI:10.1016/j.lwt.2024.117127

Xianbao Li , Binxu Li , Natalia S. Podio , Xiao-Yin Wang , Suhang Jiang , Shuyan Xu , Xuemei Qiu , Zheng Zeng , Wei Gong , Shirui Wang , Er Sheng Gong

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引用次数: 0

Abstract

Phenolics in three purple rice varieties were qualitatively and quantitatively analyzed using untargeted metabolomics, and their antioxidant activities were also investigated. Jixuenuo showed the highest antioxidant activity and phenolic content among the three varieties. Ninety-three phenolics across four categories (flavonoids, phenolic acids, stilbenes, and lignans) were identified, with Jixuenuo showing the highest anthocyanin content. Cyanidin-3-O-glucoside (C3G) accounted for over 90% of total anthocyanin content. The volcano plot analysis identified 53 differential phenolics, 22 of which were classified as major. KEGG pathway analysis revealed significant enrichment in flavonoids biosynthesis pathways. Jixuenuo showed significantly enhanced biosynthesis in the pathways for cyanidin, dihydromyricetin, epicatechin, C3G, myricetin, and rutin. Correlation analysis indicated that these flavonoids were significantly positively correlated with antioxidant activity and total phenolic content. These findings suggest that specific flavonoids in Jixuenuo may serve as markers for evaluating the antioxidant potential of purple rice.

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来源期刊

LWT - Food Science and Technology 工程技术-食品科技

CiteScore

11.80

自引率

6.70%

发文量

1724

审稿时长

65 days

期刊介绍： LWT - Food Science and Technology is an international journal that publishes innovative papers in the fields of food chemistry, biochemistry, microbiology, technology and nutrition. The work described should be innovative either in the approach or in the methods used. The significance of the results either for the science community or for the food industry must also be specified. Contributions written in English are welcomed in the form of review articles, short reviews, research papers, and research notes. Papers featuring animal trials and cell cultures are outside the scope of the journal and will not be considered for publication.