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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

A response surface methodology for determination of engineering properties of soil in situ

100%
Rubinstein D., Upadhyaya S. K., Sime M.
International Agrophysics
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1994
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tom 08
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nr 1
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Optimization of processing parameters for lettuce vacuum osmotic dehydration using response surface methodology

75%
Yuan Y., Tan L., Xu Y., Dong J., Zhao Y., Yuan Y.
Polish Journal of Food and Nutrition Sciences
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2018
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tom 68
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nr 1
In order to obtain the optimal technological parameters of lettuce vacuum osmotic dehydration, the effects of osmotic temperature, slice thickness, sucrose concentration, and vacuum degree on the vacuum osmotic dehydration were explored. The lettuce water loss rate and solid gain rate decreased with the increase of slice thickness and vacuum degree, and increased with the increase of sucrose concentration and osmotic temperature. Response surface methodology was applied to analyze the infl uence of the four infl uential factors on the evaluated parameters and the optimization of lettuce vacuum osmotic dehydration was studied. The results indicated that, within the experimental scope, the optimized technological parameters of lettuce vacuum osmotic dehydration are the temperature of 28º C, the slice thickness of 2 mm, sucrose concentration of 47%, the vacuum degree of 22 kPa, and the water loss rate and solid gain rate are 72.16% and 11.82%, respectively.
3

Optimization of arabitol production by karyoductant SP-K7 of S. cerevisiae V and P. stipitis CCY 39501 using response surface methodology

63%
Kordowska-Wiater M., Kubik-Komar A., Targonski Z.
Polish Journal of Microbiology
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2012
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tom 61
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nr 4
L-arabitol is used in the food and pharmaceutical industries. It can be secreted by genetically modified Saccharomyces cerevisiae carrying the genes responsible for pentose metabolism in yeast cells. The process of the biotransformation of L-arabinose to arabitol is highly dependent on culture conditions. The aim of this investigation was to use statistical response surface methodology (RSM) for optimization of biotransformation of L-arabinose to arabitol by a karyoductant of S. cerevisiae V30 and Pichia stipitis CCY 39501, named SP-K7. Batch cultures of yeast were performed according to a Plackett-Burman design, and three factors, rotation speed, L-arabinose concentration, and temperature, were chosen for a central composite design (CCD) applied in order to optimize the production of the polyol by the karyoductant. On the basis of results obtained using 20 combinations of batch cultures of karyoductant SP-K7, the optimal levels of the factors were determined as: rotation speed 150 rpm, concentration of L-arabinose 32.5 g/l, and temperature 28°C. In such conditions, the predicted concentration of arabitol after two days of incubation of SP-K7 should be 18.367 g/l. The value of R2 = 0.93195 suggested that this model was well-fitted to the experimental data. A verification of the model in experimental conditions confirmed its usefulness.
4

Optimization of single-cell-biomass production by Yarrowia lipolytica using response surface methodology and pulse method

63%
Musial I., Rymowicz W., Cibis E.
Electronic Journal of Polish Agricultural Universities. Series: Biotechnology
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2004
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tom 07
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nr 1
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Enhanced production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer by endophytic Bacillus cereus RCL 02 utilizing sugarcane molasses as sole source of carbon: a statistical optimization approach

63%
Das R., Pal A., Paul A. K.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
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2022
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tom 103
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nr 3
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Optimization of Banana Peels Hydrolysis for the production of Bioethanol: Response surface methodology

51%
Gebresemati M., Gebregergs A.
International Letters of Natural Sciences
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2015
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tom 48
Energy consumption has increased steadily over the last four decades as the population has grown and more countries have become industrialized. On the other hand waste disposal has become the major concern of developing cities. Many countries such as Ethiopia have abundant raw materials for biofuels, yet these have not been explored. This study was designed to utilize banana peels for the production of bioethanol using the yeast Saccharomyces cerevisiae. The effects of factors in hydrolysis (the effect of hydrolysis parameters) were investigated and the optimum combination factor was carried out with response surface design. The parameters were varied over 3 levels and 17 experimental runs were conducted to produce fermentable sugar. The optimum results were obtained at 1.50 % v/v acid concentration, 91.02 0C temperature and 21.66 min retention time. At this optimum condition, fermentation with and without benzyl penicillin was performed to determine its effect on bioethanol.
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