This work established an integrated utilization of dairy whey in ?-galactosidase production from Lactobacillus bulgaricus and prebiotics synthesis by the probiotic enzyme. A cost-effective whey-based medium was newly developed for culturing to produce ?-galactosidase. The optimized through response surface methodology (RSM) involving a series statistical designs, such as Plackett–Burman design,...

Media composition and culture conditions for levan production by Bacillus mojavensis (BM-levan) were optimized using Plackett–Burman Box-Behnken designs. The yield was 0.44 g of per gram sucrose consumed. decomposition revealed an optimal temperature 228 °C, endothermic peak at 216.58 °C a melting enthalpy 49.28 J/g. rheological parameters the aqueous solutions from BM-levan determined accordin...

Dammarane-type saponins (DTSs) exist in various medicinal plants, which are a class of active ingredients with effects on improving myocardial ischemia and immunomodulation. In this study, quantitative 1H NMR method total DTSs herbal medicines was developed based the analytical procedure lifecycle. first stage (analytical design), Ishikawa diagram failure mode criticality analysis were used to ...

In response to the lack of accurate and reliable parameters in discrete element simulation analysis sugarcane leaf crushing return device, this work, actual simulated errors two stacking angles α β leaves were used as indicators calibrate parameters. The second-order regression models between important obtained by Plackett-Burman test, steepest climb Box-Behnken optimization variance interactio...

Taking hybrid biomass sawdust as the material, carry out simulation calibration experiment with JKR contact model based on DEM principle. The Plackett-Burman factorial is carried by Design-Expert for 10 related factors. Combined steepest climbing test scheme, according to Box-Behnken experiment, parameter of multi-response Indicators completed. results are follows: Poisson's ratio 0.30, density...