公开(公告)号：US20190137476A1

公开(公告)日：2019-05-09

申请号：US16086665

申请日：2017-03-23

申请人： The Regents of the University of California

发明人： Cristina E. Davis ,  Abhaya M. Dandekar ,  Alexander A. Aksenov ,  Alberto Pasamontes Funez ,  Daniel J. Peirano ,  Mitchell M. McCartney ,  Oliver Fiehn ,  Susan E. Ebeler ,  Yuriy Zrodnikov

IPC分类号： G01N33/487 ,  B01L3/00 ,  B01D53/04 ,  B01D53/02

摘要： The disclosed embodiments relate to a technique for detecting Huanglongbing (HLB) infection in a citrus plant. This technique involves first gathering one or more samples of volatile organic compounds (VOCs) emanating from the citrus plant. Next, a system measures VOCs in the gathered samples to determine a VOC profile for the citrus plant, wherein the VOC profile comprises measured values for a set of VOCs that comprise disease-specific biomarkers for HLB infection. Finally, the system determines an HLB infection status for the citrus plant by analyzing the VOC profile.

公开(公告)号：US09188568B2

公开(公告)日：2015-11-17

申请号：US13767798

申请日：2013-02-14

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Susan E. Ebeler ,  Arielle Johnson ,  Greg Hirson

IPC分类号： G01N30/02 ,  G01N30/72 ,  G01N30/78 ,  G01N30/84 ,  G01N30/88

CPC分类号： G01N30/02 ,  G01N30/7206 ,  G01N30/78 ,  G01N30/84 ,  G01N2030/8411 ,  G01N2030/8809

摘要： A method for the in-instrument recombination of volatiles using a gas chromatograph with mass spectrometry and olfactometry detection is described. Compounds that are introduced into the modified GC are separated conventionally on an analytical capillary GC column. The elution profile of volatiles can be segmented, analyzed and arbitrarily combined. In-line with the GC column, a pneumatic flow switch and splitter are connected to a detector and olfactometer. A cold trap allows the user to build a mixture of separated volatiles that is held until the cryotrap is rapidly heated, releasing the mixture for a subject to smell at the olfactory port and to evaluate. The instrument allows for characterization of the aroma quality of specific fractions of aroma volatiles obtained from foods, flowers or beverages without the need for pure chemical standards or the calculation of individual compound concentrations or sensory thresholds.

摘要翻译： 描述了使用具有质谱法和嗅觉检测的气相色谱仪进行仪器内挥发物重组的方法。 引入到改性GC中的化合物通常在分析毛细管GC柱上分离。 挥发物的洗脱曲线可以分段，分析和任意组合。 与气相色谱柱一致，气动流量开关和分流器连接到检测器和嗅觉计。 冷阱允许用户构建分离的挥发物的混合物，其被保持直到冷冻机被快速加热，释放混合物以使受试者在嗅觉口处闻到气味并进行评估。 该仪器允许表征从食品，鲜花或饮料获得的香味挥发物的特定部分的香气质量，而不需要纯化学品标准或计算单个化合物浓度或感觉阈值。

公开(公告)号：US20130219991A1

公开(公告)日：2013-08-29

申请号：US13767798

申请日：2013-02-14

申请人： The Regents Of The University of California

发明人： Susan E. Ebeler ,  Arielle Johnson ,  Greg Hirson

IPC分类号： G01N30/02

CPC分类号： G01N30/02 ,  G01N30/7206 ,  G01N30/78 ,  G01N30/84 ,  G01N2030/8411 ,  G01N2030/8809

摘要： A method for the in-instrument recombination of volatiles using a gas chromatograph with mass spectrometry and olfactometry detection is described. Compounds that are introduced into the modified GC are separated conventionally on an analytical capillary GC column. The elution profile of volatiles can be segmented, analyzed and arbitrarily combined. In-line with the GC column, a pneumatic flow switch and splitter are connected to a detector and olfactometer. A cold trap allows the user to build a mixture of separated volatiles that is held until the cryotrap is rapidly heated, releasing the mixture for a subject to smell at the olfactory port and to evaluate. The instrument allows for characterization of the aroma quality of specific fractions of aroma volatiles obtained from foods, flowers or beverages without the need for pure chemical standards or the calculation of individual compound concentrations or sensory thresholds.

摘要翻译： 描述了使用具有质谱法和嗅觉检测的气相色谱仪进行仪器内挥发物重组的方法。 引入到改性GC中的化合物通常在分析毛细管GC柱上分离。 挥发物的洗脱曲线可以分段，分析和任意组合。 与气相色谱柱一致，气动流量开关和分流器连接到检测器和嗅觉计。 冷阱允许用户构建分离的挥发物的混合物，其被保持直到冷冻机被快速加热，释放混合物以使受试者在嗅觉口处闻到气味并进行评估。 该仪器允许表征从食品，鲜花或饮料获得的香味挥发物的特定部分的香气质量，而不需要纯化学品标准或计算单个化合物浓度或感觉阈值。