A NOVEL APPROACH FOR SURFACTIN PRODUCTION BY LOCALLY ISOLATED BACILLUS SUBTILIS WITH COMMERCIAL POTENTIALS
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS, BIO-TECHNOLOGY AND ENVIRONMENTAL ENGINEERING
Author(s): G.A. AMIN , O. AL-ZAHRANI
Abstract: Surfactin produced by B.subtilis BDCC-TUSA-3 from Maldex-15 as a growth associated product in conventional batch process. Maldex-15 is a cheap industrial by-product recovered during manufacturing of high fructose syrup from corn starch. Surfactin production was greatly improved in exponential fed-batch fermentation. Maldex-15 and other nutrients were exponentially fed into the culture based on the specific growth rate of the bacterium. In order to maximize surfactin yield and productivity, conversion of different quantities of Maldex-15 into surfactin was investigated in five different fermentation runs. In all runs, most of Maldex-15 was consumed and converted into surfactin and cell biomass with appreciable efficiencies. The best results were obtained with fermentation run supplied with 204 g Maldex-15. Up to 36.1 g.l-1 of surfactin and cell biomass of 31.8 g.l-1 were achieved in 12 hrs. Also, markedly substrate yield of 0.272 g/g and volumetric reactor productivity of 2.58 g.1-1.h-1
- Publication Date: 02-Jun-2014
- DOI: 10.15224/978-1-63248-009-5-93
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ANALYSIS OF ANTIMITOTIC ACTIVITIES FROM PHYTONUTRIENTS
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS, BIO-TECHNOLOGY AND ENVIRONMENTAL ENGINEERING
Author(s): PRIYANKA.RAVICHANDRAN
Abstract: Ayurveda, an ancient form of Indian medicine, speaks of several plant parts that cure different ailments when consumed. Here, we analyze different regularly consumed plant products to study their effect on mitosis. Several extracts were able to suppress mitosis, Areca nut was picked as a known mutagen, and turmeric and mango for their antimitotic activity upon eliminating other plant extracts. Preliminary analysis of a mixture of the mitogenic and antimitotic extracts showed that the antimitotic extracts were able to suppress the mitogenic activity of areca nut, indicating that the activity of areca nut is one of the factors that may be dependent on those targeted by mango and turmeric. Extracts prepared in absolute ethanol showed that the active ingredient is either inactive or absent in the ethanol extract. Two approaches were taken to identify the active ingredient. Firstly, the extracts were tested for the presence of known active ingredients, such as tannins, that are known to hav
- Publication Date: 17-Nov-2014
- DOI: 10.15224/978-1-63248-009-5-94
- Views: 0
- Downloads: 0