来自澳大利亚手指的乙醇提取物的抗菌活性
Ruimin Zhang1, Zhengyan Fan1, Congyi Zhu1
1Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Science and Technology Research on Fruit Tree, Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Foods (Basel, Switzerland)
|August 10, 2024
概括
澳大利亚指石灰提取物显示出强大的抗菌特性,对抗各种细菌,包括植物病原体,如Candidatus Liberibacter asiaticus. 这种天然化合物为食品和农业中合成杀菌剂提供了一个有希望的替代品.
科学领域:
- 植物化学 植物化学
- 微生物学 微生物学
- 植物病理学 植物病理学
背景情况:
- 澳大利亚手指 (Citrus australasica L.) 以其抗氧化剂和健康益处而闻名.
- 在食品和农业中,对合成杀菌剂的天然替代品的需求日益增加.
研究的目的:
- 为了研究指提取物的化学成分.
- 评估其对各种细菌菌株和植物病原体的抗菌活性.
- 阐明其抗菌作用的机制.
主要方法:
- 指石灰果的乙醇提取方法.
- 确定针对格拉姆阳性和格拉姆阴性细菌的最小抑制度 (MIC).
- 在体内对Candidatus Liberibacter asiaticus (CLas) 的评估.
- 气色谱-质谱 (GC-MS) 用于化合物识别.
- 通过扫描电子显微镜分析细胞透性,膜完整性和细菌形态.
主要成果:
- 对黄金葡萄球菌,细菌细菌,大肠杆菌,Agrobacterium tumefaciens,Xanthomonas campestris,Xanthomonas citri和CLas.观察到显著的抗菌活性
- 细菌细菌表现出最高的敏感性;MIC值在500至1000μg/mL之间.
- 指石灰提取物有效地抑制了植物中的CLas,降低了经过处理的叶子中的细菌标位.
- GC-MS确定了360种化合物,其中碳水化合物,有机酸和酒精是主要成分. 预测酸,多和类是关键的抗菌剂.
- 显微镜分析显示治疗细菌的细胞壁损伤,细胞内容的泄漏和细胞死亡.
结论:
- 澳大利亚手指石灰的乙醇提取物具有广泛的抗菌特性.
- 提取物通过破坏细菌细胞膜的完整性和形态来起作用.
- 指石灰提取物是合成杀菌剂的可行天然替代品,用于食品防腐和植物保护.
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