Optimizing the biodegradation of two keratinous wastes through a Bacillus subtilis recombinant strain using a response surface methodology

2010 ◽  
Vol 21 (6) ◽  
pp. 1077-1092 ◽  
Author(s):  
Amira M. Embaby ◽  
Taha I. Zaghloul ◽  
Ahmed R. Elmahdy
Keyword(s):  
Response Surface Methodology ◽  
Bacillus Subtilis ◽  
Response Surface ◽  
Recombinant Strain

Medium optimization for the production of thermal stable β-glucanase by Bacillus subtilis ZJF-1A5 using response surface methodology

2004 ◽  
Vol 93 (2) ◽  
pp. 175-181 ◽  
Author(s):  
Xing-Jun Tang ◽  
Guo-Qing He ◽  
Qi-He Chen ◽  
Xiu-Yan Zhang ◽  
Mokhtar A.M Ali
Keyword(s):  
Response Surface Methodology ◽  
Bacillus Subtilis ◽  
Response Surface ◽  
Medium Optimization ◽  
Thermal Stable

Optimization of Medium Constituents for the Production of Fructosyltransferase (Ftase) by Bacillus subtilis Using Response Surface Methodology

2008 ◽  
Vol 3 (3) ◽  
pp. 114-121 ◽  
Author(s):  
I. Sarat Babu . ◽  
S. Ramappa . ◽  
D. Guru Mahesh . ◽  
K. Sunanda Kumari . ◽  
K. Sita Kumari . ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Bacillus Subtilis ◽  
Response Surface

Alkaline Protease Production Using Response Surface Methodology, Characterization and Industrial Exploitation of Alkaline Protease of Bacillus subtilis sp.

2017 ◽  
Vol 147 (5) ◽  
pp. 1204-1213 ◽  
Author(s):  
Fouzia Hussain ◽  
Shagufta Kamal ◽  
Saima Rehman ◽  
Muhammad Azeem ◽  
Ismat Bibi ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Bacillus Subtilis ◽  
Response Surface ◽  
Alkaline Protease ◽  
Protease Production

scholarly journals Optimization of Soybean Meal Fermentation for Aqua-Feed with Bacillus subtilis natto Using the Response Surface Methodology

Fermentation ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 306
Author(s):  
Yukun Zhang ◽  
Manabu Ishikawa ◽  
Shunsuke Koshio ◽  
Saichiro Yokoyama ◽  
Serge Dossou ◽  
...  
Keyword(s):  
Amino Acids ◽  
Response Surface Methodology ◽  
Bacillus Subtilis ◽  
Response Surface ◽  
Layer Thickness ◽  
Soybean Meal ◽  
Essential Amino Acids ◽  
Total Phenolic ◽  
Bacillus Subtilis Natto ◽  
Substrate Ratio

This study aimed to improve the nutritional value of soybean meal (SBM) by solid-state fermentation (SSF) using Bacillus subtilis natto (B. s. natto) to overcome the limitations of SBM usage in aquafeed. The response surface methodology (RSM) was employed to explore the relationships of fermentation conditions, such as temperature, time, water-substrate ratio, and layer thickness, on the degree of protein hydrolysis (DH) and the crude protein (CP) content. The optimum conditions for achieving the higher DH (15.96%) and CP (55.76%) were 43.82 °C, 62.32 h, 1.08 of water-substrate ratio, and a layer thickness of 2.02 cm. CP and DH in the fermented soybean meal (FSM) increased by 9.8% and 177.1%, respectively, and crude fiber decreased by 14.1% compared to SBM. The protein dispersibility index (PDI) decreased by 29.8%, while KOH protein solubility (KPS) was significantly increased by 17.4%. Flavonoids and total phenolic acid content in FSM were increased by 231.0% and 309.4%, respectively. Neutral protease activity (NPA) also reached a high level (1723.6 U g−1). Total essential amino acids (EAA) in FSM increased by 12.2%, higher than the 10.8% increase of total non-essential amino acids (NEAA), while the total free amino acids content was 12.76 times higher than that of SBM. Major anti-nutritional factors in SBM were significantly reduced during the process, and almost all SBM protein macromolecules were decomposed. Together with the cost-effectiveness of SSF, B. s. natto-fermented SBM products have great potential to improve the plant composition and replace high-cost ingredients in aquafeed, contributing to food security and environmental sustainability.

scholarly journals Optimization of antifungal activity by Bacillus subtilis isolate CCASU 2021-4 using Response Surface Methodology

2021 ◽  
Vol 5 (1) ◽  
pp. 171-183
Author(s):  
Ghadir El-Housseiny ◽  
Gina Shams ◽  
zeina Ghobashi ◽  
Rawan Mamdouh ◽  
Israa Almaqsod ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Bacillus Subtilis ◽  
Antifungal Activity ◽  
Response Surface
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