Studies on the production of B. thuringiensis based biopesticides using wastewater sludge as a raw material

Vidyarthi, Ambarish Sharan; Tyagi, Rajeshwar Dayal; Valero, José R. Lerma; Surampalli, Rao Y.

doi:10.1016/s0043-1354(02)00213-0

Cited by 103 publications

(62 citation statements)

References 23 publications

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“…The pH attained at media 3 and 4 was possibly due to the utilization of the carbohydrates before the sporulation phase was reached (Tirado Montiel et al 2001). These patterns in pH variation were similar to those found by Tirado Montiel et al (2001) and Vidyarthi et al (2002). They reported the fi nal pH in the sludge samples stabilized between 8 and 8.5.…”

Section: Resultssupporting

confidence: 90%

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Use of by-products rich in carbon and nitrogen as a nutrient source to produce Bacillus thuringiensis (Berliner)-based biopesticide

Valicente¹,

Mourão²

2008

Neotrop. entomol.

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Section: Resultssupporting

confidence: 90%

“…B. thuringiensis is a Gram-positive soil bacterium characterized by its ability to produce crystalline inclusions called "endotoxin proteins" during sporulation. The crystalline inclusions along with the spores have a high potential to control a great number of insect pests belonging to the order Lepidoptera, Diptera and Coleoptera (Vidyarthi et al 2002).…”

mentioning

confidence: 99%

Use of by-products rich in carbon and nitrogen as a nutrient source to produce Bacillus thuringiensis (Berliner)-based biopesticide

Valicente¹,

Mourão²

2008

Neotrop. entomol.

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“…Therefore, there is an optimum level for the total solids of sludge for ethanol production, which may change depending on the employed treatment. This was in accordance with other literature (Vidyarthi et al 2002).…”

Section: Effect Of Total Solids Of Ads On Ethanol Productionsupporting

confidence: 94%

Anaerobic digested sludge: a new supplementary nutrient source for ethanol production

Bashiri

Farhadian

Asadollahi

et al. 2016

Int. J. Environ. Sci. Technol.

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Effluent sludge from an anaerobic digester was used as a source of nitrogen, phosphate, sulfur, and other nutrients in the culture medium of ethanol production by the yeast Saccharomyces cerevisiae. Several pretreatments (mechanical, chemical, thermal, and thermo-chemical) were performed on the anaerobic digested sludge (ADS) to make the nutrients accessible to the yeast cells. Preliminary experiments revealed that S. cerevisiae is not able to assimilate the carbon content of the ADS. However, when glucose was added to the medium, ethanol production was observed. The yield of ethanol using untreated ADS was only 10 % of the theoretical yield, but alkaline pretreatment improved it up to 43 %. By separating the hydrolysate of alkaline-treated ADS from the suspended solids, the ethanol yield from the supernatant was further improved up to 65 % of theoretical yield. Alkaline-treated ADS exhibited competitive performance with the mixture of yeast extract and mineral salts in ethanol fermentation.

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“…This bacterium is characterized by its ability to produce crystalline inclusions proteins or crystals called endotoxin during sporulation and/or stationary phase. The crystalline inclusions along with the spores have a great potential to control a great number of pest insects belonging to the order Lepidoptera, Diptera and Coleoptera [28]. The Bt biopesticide prepations are based on endotoxin proteins accumulated as parasoral crystals produced by the bacterial cells.…”

Section: Definition Of Bacteriamentioning

confidence: 99%

Development of a Cheap Media for Bacillus thuringiensis Growth

Hasanain¹

2017

IJBB

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Abstract:Bacillus thuringiensis (Bt) is being widely used in mosquito control programs. However, large-scale production of this bacillus is expensive due to the high cost of the production medium. In this study, we attempted to develop a cost-effective medium, based on locally available raw materials which is available in plenty as waste product from several industries. The results of the optimization studies showed that the optimum pH is at (7.2) and the optimum incubation temperature at (30˚C) using standard nutrient broth (NB) media. Raw materials (wheat bran, rabbit feed, cabbage leaves, potato tubercles, and cactus extracts as carbon and protein sources were tested. In addition, seawater and stock solution as mineral sources were also prepared to select the most appropriate growth media. 35 trials (single or in combination) from those materials were experimented. The growth was determined by spectrophotometer at 600 nm. Medium composed of cactus extract and seawater was shown to be superior to other media for the growth of B. thuringiensis.In conclusion, the finding of this cheap formulation should contribute to the reduction of the cost of B. thuringiensis bioinsecticide production. This would encourage local large scale production 221

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Studies on the production of B. thuringiensis based biopesticides using wastewater sludge as a raw material

Cited by 103 publications

References 23 publications

Use of by-products rich in carbon and nitrogen as a nutrient source to produce Bacillus thuringiensis (Berliner)-based biopesticide

Use of by-products rich in carbon and nitrogen as a nutrient source to produce Bacillus thuringiensis (Berliner)-based biopesticide

Anaerobic digested sludge: a new supplementary nutrient source for ethanol production

Development of a Cheap Media for Bacillus thuringiensis Growth

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