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首页> 外文期刊>RSC Advances >Chemical constituents and antimicrobial activity of wood vinegars at different pyrolysis temperature ranges obtained from Eucommia ulmoides Olivers branches
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Chemical constituents and antimicrobial activity of wood vinegars at different pyrolysis temperature ranges obtained from Eucommia ulmoides Olivers branches

机译：从Eucommia ulmoides olivers分支获得的不同热解温度范围内的木醋汁的化学成分和抗微生物活性

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摘要

Pyrolysis is a promising approach for converting biomass to solids, liquids, and gases. Herein wood vinegars (WVs) were produced from pyrolysis of Eucommia ulmoides Olivers (EUO) branches in different temperature ranges that were labeled as WV90 approximate to 120 and WV480 approximate to 510. The yield, the physicochemical characteristics, the chemical composition, and the antimicrobial activity of the WVs were comprehensively investigated. During the pyrolysis process, as the temperature increased, the yield of the WVs increased firstly and then decreased, and WV300 approximate to 330 achieved the maximum yield of 236.79 g, accounting for 23.26% of the total amount of raw WVs. However, both the lowest pH value (2.39) and the highest total acid content (12.70%) occurred for WV270 approximate to 300. GC-MS results demonstrated that six components of WVs for WV300 approximate to 330 were phenols, ketones, aldehydes, alcohols, organic acids, and benzenes, while no clear regularity between the contents of each component and the reaction temperature was found. Thereafter, the antimicrobial activity of WVs was tested, and the results showed that the longest inhibition circle diameter of 24.50 mm for Enterobacter aerogenes was obtained for WV300 approximate to 330 indicating an excellent antibacterial activity; the overall inhibitory effects of WVs on bacteria were superior to those of plant pathogens and fungus. Therefore, WV300 approximate to 330 showed a better antimicrobial activity than that of WV270 approximate to 300 in this study. The result could be a reference for the further utilization of WVs in the field of antimicrobial development.
机译：热解是用于生物质转化为固体，液体和气体有前途的方法。本文木醋（WVS）从杜仲奥利韦斯（EUO）的热解产生在不同的温度范围树枝被标记为WV90近似于120和WV480近似于510的收，物理化学特性，化学组成，和抗微生物世界价值观调查的活动进行了全面调查。在热解过程中，由于温度的升高，WVS的收率先增加后降低，并且WV300近似至330实现的236.79克最大产量，占原WVS的总量的23.26％。然而，无论是最低pH值（2.39）和最高总酸含量（12.70％）发生了WV270近似于300 GC-MS结果表明，对于WV300 WVS的六个分量接近于330是酚类，酮类，醛类，醇类，有机酸，和苯，而每个组件和反应温度的内容之间没有明显的规律性被发现。此后，WVS的抗微生物活性进行了测试，结果表明，24.50毫米用于WV300获得产气肠杆菌的最长抑制圆直径近似于330指示极好的抗菌活性; WVS对细菌的总体抑制效果均优于植物病原体和真菌。因此，WV300接近330显示出比这更好的抗菌活性WV270的接近300了这项研究。其结果可能是对WVS的抗菌发展领域的进一步利用提供参考。

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  • 来源
    《RSC Advances》 |2018年第71期|共9页
  • 作者

    Hou Xiaomei; Qiu Ling; Luo Shihai; Kang Kang; Zhu Mingqiang; Yao Yiqing;

  • 作者单位

    Northwest A&

    F Univ Coll Mech &

    Elect Engn Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Mech &

    Elect Engn Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Mech &

    Elect Engn Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Mech &

    Elect Engn Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Mech &

    Elect Engn Yangling 712100 Shaanxi Peoples R China;

    Northwest A&

    F Univ Coll Mech &

    Elect Engn Yangling 712100 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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