Application of Improved Partial Least Squares Regression Method in Microbial Culture Medium Optimization
A microbial culture medium and partial least squares technology, applied in the application field of multivariate statistical methods, can solve the problems of poor prediction accuracy, unreliable prediction of data, and large number of latent variables extracted from mixed noise, etc., to achieve the effect of establishing simplicity
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[0027] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] Example Using an improved PLSR-based medium optimization strategy to improve the ethanol tolerance of Clostridium thermocellum
[0029] 1. Experimental materials and measurement methods. Clostridium thermocellum ATCC35609 resistant strain (tolerance to 3% (V / V) exogenous ethanol), GS-2 medium is the initial medium, culture method: 60 ℃ anaerobic (filled with 10% CO 2 ,5%H 2 and 85%N 2 Maintain anaerobic environment) static culture, after culturing for 48 hours, use turbidimetry to measure bacterial biomass, use high performance chromatography (HPLC) to measure sugar consumption, fermentation broth acetic acid concentration, lactic acid concentration and ethanol concentration, and use acidity meter to measure The pH drop of the fermentation broth.
[0030] 2. Uniformly designed experiments. Accordi...
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