Method for discriminatively analyzing and judging different species of yeasts based on GC-MS (Gas Chromatography-Mass Spectrometer) combined with orthogonal partial least squares

• Main Authors: WU JUNRUI, AN FEIYU, WANG YUSHENG, HE YANG, MA XUWEN, MA XI, YANG WENXIN, CAO KAIXIN, ZANG JIAN, HU LONGKUN, WU RINA
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of flavor chemical analysis, and particularly relates to a method for discriminatively analyzing and judging different species of yeasts based on GC-MS (Gas Chromatography-Mass Spectrometer) combined with orthogonal partial least squares. Extracting beer volatile matters and carrying out GC-MS analysis; by using the obtained analysis data, constructing an orthogonal partial least square model by using SIMCA-P software to analyze the flavor substances of beer fermented by different species of yeast, and comparing and analyzing the characteristics of the flavor substances; according to the method, an orthogonal partial least square discriminant analysis model of the flavor substances of the beer fermented by the known strain is established, the new separated strain is used for fermenting the beer, flavor substance data of the beer is substituted into the established model, the model cannot be over-fitted, and relevant parameters still can prove the predictive capacit