Towards a starter culture of Lactobacillus plantarum AFS13: Assessment of more relevant effects for in vitro production and preservation thereof, via fractional factorial design methodology

LWT ◽  
2020 ◽  
Vol 133 ◽  
pp. 110119
Author(s):  
M. Francisca Portilha-Cunha ◽  
F. Xavier Malcata ◽  
Patrícia J.M. Reis ◽  
Angela C. Macedo
Keyword(s):  
Factorial Design ◽  
Lactobacillus Plantarum ◽  
Design Methodology ◽  
Fractional Factorial Design ◽  
Starter Culture ◽  
Fractional Factorial ◽  
In Vitro Production ◽  
Vitro Production

Synthesis, characterization and optimization of heterogeneous catalytic cyclohexene oxidation by tungstophospho(aqua)ruthenate via the fractional factorial design methodology

2018 ◽  
Vol 42 (19) ◽  
pp. 16287-16296 ◽  
Author(s):  
Mostapha Zerrouki ◽  
Souheyla Boudjema ◽  
Abderrahim Choukchou-Braham ◽  
Ilhem Rekkab-Hammoumraoui
Keyword(s):  
Factorial Design ◽  
Design Methodology ◽  
Fractional Factorial Design ◽  
Fractional Factorial ◽  
Cyclohexene Oxidation ◽  
Heterogeneous Catalytic ◽  
Mild Conditions ◽  
Keggin Type

Keggin-type tungstophospho(aqua)ruthenate (PRuW) was synthesized and supported on acid activated montmorillonite under mild conditions.

Rational development of GAG-augmented chitosan membranes by fractional factorial design methodology

Biomaterials ◽  
2006 ◽  
Vol 27 (10) ◽  
pp. 2222-2232 ◽  
Author(s):  
Yen-Lin Chen ◽  
Huang-Chi Chen ◽  
Hsiao-Ping Lee ◽  
Hing-Yuen Chan ◽  
Yu-Chen Hu
Keyword(s):  
Factorial Design ◽  
Design Methodology ◽  
Fractional Factorial Design ◽  
Fractional Factorial ◽  
Rational Development ◽  
Chitosan Membranes

THE IN VITRO PRODUCTION OF ANDROGENS BY FOLLICULAR TISSUE OF RABBITS

1964 ◽  
Vol 47 (2) ◽  
pp. 306-313 ◽  
Author(s):  
Denis Gospodarowicz
Keyword(s):  
In Vitro Production ◽  
Vitro Production

ABSTRACT Incubation in vitro of rabbit follicles in separate experiments with dehydroepiandrosterone-14C (DHEA-14C), progesterone-14C and pregnenolone-3H in the presence of FSH gave the following results: 39 % of the radioactivity of DHEA-14C is converted to androstenedione and testosterone, while only 3 % of the radioactivity of either progesterone-14C or pregnenolone-3H is found in the androgen fraction. From the ratio of testosterone to androstenedione formed from the three precursors, the results are interpreted to mean that DHEA and pregnenolone, and not progesterone, are precursors of androgens in the follicle.

Oxygenation of 18-hydroxycorticosterone as the final reaction for aldosterone biosynthesis

1984 ◽  
Vol 107 (3) ◽  
pp. 395-400 ◽  
Author(s):  
Itaru Kojima ◽  
Etsuro Ogata ◽  
Hiroshi Inano ◽  
Bun-ichi Tamaoki
Keyword(s):  
Carbon Monoxide ◽  
Hydroxysteroid Dehydrogenase ◽  
Dependent Manner ◽  
In Vitro Production ◽  
Mitochondrial Preparation ◽  
Final Reaction ◽  
Vitro Production ◽  
Dose Dependent ◽  
Cytochrome P 450

Abstract. Incubation of 18-hydroxycorticosterone with the sonicated mitochondrial preparation of bovine adrenal glomerulosa tissue leads to the production of aldosterone, as measured by radioimmunoassay. The in vitro production of aldosterone from 18-hydroxycorticosterone requires both molecular oxygen and NADPH, and is inhibited by carbon monoxide. Cytochrome P-450 inhibitors such as metyrapone, SU 8000. SU 10603, SKF 525A, amphenone B and spironolactone decrease the biosynthesis of aldosterone from 18-hydroxycorticosterone. These results support the conclusion that the final reaction in aldosterone synthesis from 18-hydroxycorticosterone is catalyzed by an oxygenase, but not by 18-hydroxysteroid dehydrogenase. By the same preparation, the production of [3H]aldosterone but not [3H]18-hydroxycorticosterone from [1,2-3H ]corticosterone is decreased in a dose-dependent manner by addition of non-radioactive 18-hydroxycorticosterone.

Optimization of PES Nanocomposite Membrane Preparation Using Statistical Analysis and Experimental Design

2019 ◽  
Author(s):  
Yasin Orooji ◽  
Fatemeh Noorisafa ◽  
Nahid Imami ◽  
Amir R. Chaharmahali
Keyword(s):  
Statistical Analysis ◽  
Experimental Design ◽  
Factorial Design ◽  
Fractional Factorial Design ◽  
Fractional Factorial ◽  
Nanocomposite Membrane ◽  
Membrane Preparation ◽  
Membrane Fabrication

<p>Using experimental design and statistical analysis (½ Fractional Factorial Design), this study investigates the effect of different parameters in the membrane fabrication on the performance of nanocomposite PES/TiO<sub>2</sub> membrane. </p>

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