• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Australasian Plant Pathology >Volatile organic compounds associated with postharvest fungi detected in stored wheat grain
【24h】

Volatile organic compounds associated with postharvest fungi detected in stored wheat grain

机译：在储存的小麦籽粒中检测到与去氨基活性有关的挥发性有机化合物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Stored wheat grain from across Australia was tested for the presence of postharvest fungi by measuring the production of volatile organic compounds (VOCs). Headspace analysis combined with gas chromatography flame ionization detection (GC/FID) and gas chromatography-mass spectrometry (GC-MS) was used to detect fungi in the grain, based on identification of peaks associated with species such as Alternaria alternata and A. infectoria. A total of 57 possible compounds were detected by GC/FID. Grain from Queensland, Victoria and New South Wales produced less VOCs compared to grain from South Australia and Western Australia. These compounds appeared at both the early and later stages of fungal growth. For example, A. alternata produced volatiles after two days that were only produced by A. infectoria after seven days. Gamma-irradiated grain (controls) did not produce these VOCs. A further analysis of the 57 VOCs by GC-MS identified three VOCs: Cyclooctasiloxane, hexadecamethyl-(CAS 556-68-3) produced by A. alternata, and Pentadecane (CAS 629-62-9) produced by A. infectora. We conclude that fungal VOCs may be useful for early detection of postharvest fungi in grain, prior to visual symptoms occurring.
机译：通过测量挥发性有机化合物（VOC）的产生，测试了来自澳大利亚跨越澳大利亚的小麦籽粒。结合气相色谱火焰电离检测（GC / FID）和气相色谱 - 质谱（GC-MS）的顶空分析用于检测谷物中的真菌，基于与诸如alertaria alternata和A. infectia相关的物种相关的峰值。 GC / FID共检测到57种可能的化合物。与南澳大利亚和西澳大利亚州的粮食相比，昆士兰州，维多利亚州和新南威尔士州的谷物产生了较少的VOC。这些化合物在真菌生长的早期和后期阶段出现。例如，A.替代在七天后仅由A. infectoria产生的两天后产生的挥发物。 γ-辐照的晶粒（对照）没有产生这些VOC。通过GC-MS对57 VOC的进一步分析，鉴定了由A.替代品产生的A.替代品和戊二烷（CAS 629-62-9）产生的Cycloctasiloxane，十六烷酰基 - （CAS556-68-3）。我们得出结论，在发生视觉症状之前，真菌VOC可能可用于早期检测谷物中的前氨基菌真菌。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号