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Abstract Title:

Extraction and characterization of phenolic compounds with antioxidant and antimicrobial activities from pickled radish.

Abstract Source:

Food Chem Toxicol. 2020 Feb ;136:111050. Epub 2019 Dec 14. PMID: 31843533

Abstract Author(s):

Jian Li, Shi-Ying Huang, Qianying Deng, Guiling Li, Guocheng Su, Jingwen Liu, Hui-Min David Wang

Article Affiliation:

Jian Li

Abstract:

The pickled radish can be kept at room temperature for years without spoilage. 2,6-dihydroxyacetophenone (DHAP), 4-hydroxybenzaldehyde (HBA), and 4-hydroxyphenethyl alcohol (4-HPEA) were first found from the pickled radish. The structures of three phenolic compounds were elucidated by analysis of their nuclear magnetic resonance and high-resolution electro-spray ionization mass spectrometry data. All these phenolic compounds showed good free radical scavenging capacity except HBA. Both DHAP and 4-HPEA also showed high ferric reducing ability. DHAP showed good antimicrobial activity against Escherichia coli, Bacillus subtilis, and Canidia albicans. HBA demonstrated antimicrobial activity against E. coli and C. albicans but not B. subtilis. Based on the results of MTT assay, these compounds did not show cytotoxicity to LO2 cell line. All results indicated the pickled radish had antioxidant and antimicrobial phenolic compounds. To the best of our knowledge, this report is the first to answer partially the question of why pickled foods can be kept at room temperature for years without spoilage based on the evidence of three phenolic compounds.

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Sayer Ji
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