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- W2142553567 abstract "We present a coupled experimental and theoretical framework for quantifying the kinetics of two-phase enzymatic hydrolysis of hemicellulose. For xylan loading of 1–5 mg/ml, the nature of inhibition by the product xylose (non-competitive), the kinetic constants (Km = 3.93 mg/ml, Vmax = 0.0252 mg/ml/min) and the xylose inhibition constant (Kx = 0.122 mg/ml) are experimentally determined. Our multi-step two-phase kinetic model incorporating enzyme adsorption to the solid substrate and non-competitive product inhibition is simulated using our kinetic data and validated against our experimentally measured temporal dynamics of xylose and reducing sugars. Further experiments show that higher substrate loading reduces the specific adsorption of the endoxylanase to the solid xylan and the enzyme’s solid–liquid distribution ratio, which decelerates the solid hydrolysis and accelerates the liquid phase reactions. Thus, the xylose yield increases with substrate loading, which increases product inhibition and decreases reducing sugar yields. An operating cost analysis gives 3 mg/ml as the optimal substrate loading." @default.
- W2142553567 created "2016-06-24" @default.
- W2142553567 creator A5030183714 @default.
- W2142553567 creator A5039219915 @default.
- W2142553567 date "2015-12-01" @default.
- W2142553567 modified "2023-09-25" @default.
- W2142553567 title "Kinetic analysis of two-phase enzymatic hydrolysis of hemicellulose of xylan type" @default.
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- W2142553567 doi "https://doi.org/10.1016/j.biortech.2015.09.066" @default.
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