张国财, 安吉缘, 徐震霆, 等. 7−羟基香豆素的抑菌活性及其稳定性研究[J]. 西南林业大学学报(自然科学), 2022, 42(2): 77–82 . DOI: 10.11929/j.swfu.202012026
引用本文: 张国财, 安吉缘, 徐震霆, 等. 7−羟基香豆素的抑菌活性及其稳定性研究[J]. 西南林业大学学报(自然科学), 2022, 42(2): 77–82 . DOI: 10.11929/j.swfu.202012026
Zhang Guocai, An Jiyuan, Xu Zhenting, Ma Weihu, Sun Heming, Chai Shouquan. Study on the Antifungal Activity and Stability of 7−hydroxycoumarin[J]. Journal of Southwest Forestry University, 2022, 42(2): 77-82. DOI: 10.11929/j.swfu.202012026
Citation: Zhang Guocai, An Jiyuan, Xu Zhenting, Ma Weihu, Sun Heming, Chai Shouquan. Study on the Antifungal Activity and Stability of 7−hydroxycoumarin[J]. Journal of Southwest Forestry University, 2022, 42(2): 77-82. DOI: 10.11929/j.swfu.202012026

7−羟基香豆素的抑菌活性及其稳定性研究

Study on the Antifungal Activity and Stability of 7−hydroxycoumarin

  • 摘要: 以5种植物病原菌为研究对象,用生长速率法测定7−羟基香豆素对各病菌的抑菌活性;以尖孢镰刀菌为指示菌,测定了7−羟基香豆素抑菌活性在不同条件下的稳定性。结果表明:7−羟基香豆素对5种病原菌均显示出不同程度的抑制作用,尤其是对尖孢镰刀菌作用最为显著,当浓度为1.6 mg/mL时,对尖孢镰刀菌的抑制率可达93.66%。7−羟基香豆素在经过光照、氧化剂和还原剂的处理后,抑菌活性稳定;在酸性条件下,抑菌效果显著增强,而在碱性条件下,抑菌活性下降;在经过Ca2+处理后,7−羟基香豆素的抑菌活性稳定;经过Co2+、Ni2+处理后,抑制效果达到100%,经过Mn2+处理后,抑菌效果显著加强;经过K+处理后,抑菌活性受到抑制。

     

    Abstract: The growth rate method was used to determine the antifungal activity of 7−hydroxycoumarin against 5 kinds of plant pathogens. Fusarium oxysporum was used as an indicator to determine the stability of the antifungal activity of 7−hydroxycoumarin under different conditions. The results showed that 7−hydroxycoumarin showed different degrees of inhibitory effect on 5 pathogens, especially on F. oxysporum. When the concentration was 1.6 mg/mL, the inhibition rate of F. oxysporum was 93.66%. The antifungal activity of 7−hydroxycoumarin was stable after treatment with light, oxidant and reducing agent, and significantly enhanced under acidic condition, but decreased under alkaline condition; after Ca2+ treatment, the antifungal activity of 7−hydroxycoumarin was stable; after Co2+ and Ni2+ treatment, the inhibitory effect reached 100%, and the antifungal effect was significantly enhanced after Mn2+ treatment; after K + treatment, the antifungal activity was inhibited.

     

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