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Integrated evaluation of antifungal activity of pomegranate peel polyphenols against a diverse range of postharvest fruit pathogens

文献类型： 外文期刊

作者： Nawaz, Muhammad 1 ; Pan, Junkun 1 ; Liu, Hui 1 ; Umer, Muhammad Jawad 3 ; Liu, Jiechao 1 ; Yang, Wenbo 1 ; Lv, Zhenzhen 1 ; Zhang, Qiang 1 ; Jiao, Zhonggao 1 ;

作者机构： 1.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Zhengzhou 450009, Henan, Peoples R China

2.Chinese Acad Agr Sci, Zhongyuan Res Ctr, Xinxiang 453000, Henan, Peoples R China

3.Guangdong Acad Agr Sci, Peanut Sub Ctr Natl Ctr Oilseed Crops Improvement, Crops Res Inst, Guangdong Prov Key Lab Crop Genet Improvement, Guangzhou 510640, Guangdong, Peoples R China

关键词： Pomegranate peel; Polyphenols; Antifungal activity; Fruit; Postharvest pathogens

期刊名称：BIORESOURCES AND BIOPROCESSING （ 影响因子：5.1； 五年影响因子：5.5 ）

ISSN：

年卷期： 2025 年 12 卷 1 期

页码：

收录情况： SCI

摘要： The search for safe, natural antimicrobial agents has received significant attention for controlling postharvest diseases in fruits. This study evaluated the antifungal activity of pomegranate peel extracts (PPE) against 9 pathogenic fungi by different methods. Additionally, the key antifungal polyphenol compounds were identified. Results revealed that the n-hexane partitioned fraction of ethanolic extract exhibited the highest inhibition efficacy. A total 36 polyphenols, including 10 newly discovered compounds in pomegranate peel were recognized. Among these, 9 specific polyphenols were found to be relatively abundant in the n-hexane fraction, highlighting their potential as primary antifungal agents. Notably, the newly identified polyphenol compound nobiletin demonstrated the strongest inhibitory effects against Colletotrichum gloeosporioides, Rhizopus stolonifer and Aspergillus niger with inhibition diameters of 12.2, 12.0, and 12.5 mm, respectively. Salidroside exhibited significant antifungal activity against Monilinia fructicola and A. niger (inhibition diameters > 12.0 mm). Furthermore, cinnamic acid that was enriched in hexane fraction, showed the highest inhibitory zones against Alternaria alternata, C. gloeosporioides and Botryosphaeria dothidea (11.8 similar to 12.7 mm). Caffeic acid and protocatechuic acid both displayed the lowest minimum inhibitory concentration (MIC) on Penicillium expansum. The study demonstrated the potential of PPE, particularly the n-hexane fraction, as a broad-spectrum natural antifungal agent for postharvest disease management.

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