利用植物提取物与壳聚糖基涂层协同作用对苹果采后由病原体引起的腐败和病害进行生物防治。

Biological control of postharvest spoilage and diseases in apples caused by pathogens, using plant extracts in collaboration with a chitosan-based coating.

作者信息

Shokri Samira, Yeganegi Marzieh, Alikord Mahsa, Rezagholizade-Shirvan Alieh

机构信息

Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran.

Bioprocessing and Biodetection Laboratory, Department of Food Science and Engineering, University of Tehran, Karaj 31587-77871, Iran.

出版信息

Food Chem X. 2025 Jul 29;29:102849. doi: 10.1016/j.fochx.2025.102849. eCollection 2025 Jul.

The aim of this study is to evaluate the antimicrobial activity of 7 plant extracts with minimum inhibitory (MIC) and minimum bactericidal/fungicidal concentration (MBC/MFC) against , and and the application of the chitosan edible coating incorporated with extract in apple. The results showed thyme and chamomile extracts presented the lowest MIC (0.39 and 0.78 μg/mL, respectively) and MBC (0.78 and 1.56 μg/mL, respectively) values against all tested microorganisms. To investigate the microstructural changes of chitosan-based (Ch) coatings caused by the addition of free extract (Ex), analyses of total soluble solids, pH, lesion diameter, and organoleptic properties were conducted. The results showed a decay inhibition of 40 % and 80 % after 7 days for Ch and Ch + Ex, respectively. In addition, thyme extract coatings showed the maximum inhibitory effect and the best effect on fruit quality and decay, and are suitable antimicrobial agents for active packaging in fruits.

本研究的目的是评估7种植物提取物对大肠杆菌、金黄色葡萄球菌和白色念珠菌的最低抑菌浓度（MIC）和最低杀菌/杀真菌浓度（MBC/MFC），以及含有提取物的壳聚糖可食用涂层在苹果中的应用。结果表明，百里香和洋甘菊提取物对所有测试微生物的MIC值最低（分别为0.39和0.78μg/mL），MBC值也最低（分别为0.78和1.56μg/mL）。为了研究添加游离提取物（Ex）对壳聚糖基（Ch）涂层微观结构变化的影响，对总可溶性固形物、pH值、病斑直径和感官特性进行了分析。结果表明，Ch和Ch + Ex在7天后的腐烂抑制率分别为40%和80%。此外，百里香提取物涂层显示出最大的抑制效果，对果实品质和腐烂的影响最佳，是水果活性包装的合适抗菌剂。