کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4505982 | 1624337 | 2013 | 7 صفحه PDF | دانلود رایگان |

• Bacillus subtilis SPB1 lipopeptide production under solid state fermentation.
• Solid state fermentation for B. subtilis lipopeptide production.
• Economic biosurfactant production.
• Insecticidal activity of produced biosurfactant against the Lepidoptera Ectomyelois ceratoniae Zeller, the moth pest of stored dates in Tunisia.
• E. ceratoniae mortality by SPB1 biosurfactant.
Bacillus subtilis SPB1 was shown to produce a lipopeptide biosurfactant. The insecticidal activity of this biosurfactant was evaluated against Ectomyelois ceratoniae Zeller, a moth pest of stored dates in Tunisia. The LC50 and LC90 values after six days of contact were 152 μg/g and 641 μg/g, respectively. To promote an economical production of this highly effective bioinsecticide, statistical experimental designs and response surface methodology were employed to optimize the concentrations of agro-industrial residues and humidity, for lipopeptide biosurfactant production by B. subtilis SPB1 under solid state fermentation. The optimal medium leading to a production yield near to 28 mg of crude lipopeptide preparation per g of wet solid material was composed of a mixture of 4.34 g of tuna fish flour and 5.66 g of potato waste flour with a moisture content of 76%.
Journal: Crop Protection - Volume 50, August 2013, Pages 66–72