Isolation and identification of a psychrotolerant dimethyl phthalate-degrading bacterium from selected frozen soil of high-latitude areas in China and optimization of its fermentation conditions using response surface methodology

The main aim of the present work was to optimize mead production using Response Surface Methodology. The effects of pH (X1:4–6), diammonium phosphate concentration (X2: 90–150g/hL), and temperature(X3: 24–32°C) on mead quality, concerning the final ethanol, was studied. The results showed that regression equation fit well with experimental data and the optimum extraction conditions determined in order to maximize the combined responses were pH value of 6.5, diammonium phosphate concentration of 150g/hL, temperature of 28°C. The mead produced under these conditions had the following characteristics: ethanol concentration of 9.3% and good flavor.

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Optimization of photocatalytic performance of TiO2 coated glass microspheres using response surface methodology and the application for degradation of dimethyl phthalate

Journal of Photochemistry and Photobiology A Chemistry ◽

10.1016/j.jphotochem.2013.04.008 ◽

2013 ◽

Vol 262 ◽

pp. 7-13 ◽

Cited By ~ 94

Author(s):

Wenjun Jiang ◽

Jeffrey A. Joens ◽

Dionysios D. Dionysiou ◽

Kevin E. O'Shea

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Photocatalytic Performance ◽

Dimethyl Phthalate ◽

Glass Microspheres ◽

Coated Glass

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Optimization of ethanol fermentation with reducing sugars from Camellia (Camellia oleifera) seed meal using response surface methodology

Thermal Science ◽

10.2298/tsci171112048p ◽

2018 ◽

Vol 22 (Suppl. 2) ◽

pp. 639-647

Author(s):

Ling Peng

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Ammonium Chloride ◽

Ethanol Yield ◽

Reducing Sugar ◽

Raw Material ◽

Seed Meal ◽

Magnesium Ion ◽

Fermentation Conditions ◽

Sugar Fermentation

Camellia seed meal is studied as raw material for fermentation of ethanol. In the experiments, the effect of different variables, such as the ratio of calcium to magnesium ion, ammonium chloride addition ratio, and yeast addition ratio on ethanol yield of the reducing sugar fermentation from Camellia seed meal were investi- gated by a single-factor test and a response surface methodology, respectively. The results indicated that the optimal fermentation conditions of the reducing sugar from Camellia seed meal were the ratio of calcium and magnesium ion 1:1, the ammonium chloride addition ratio 0.70%, and the yeast addition ratio 0.4%. The yield of ethanol was 95.4% under the optimum fermentation conditions (1:1, 0.70% ammonium chloride, 0.4% yeast) given by using response surface methodology. Moreover, variation coefficient was 0.59%, which showed the results were significantly consistent with the predicted value of response surface methodology. It indicated that response surface methodology was reliable to optimize the fermentation conditions of ethanol yield.

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