Comparative study on production of α-Amylase from Bacillus licheniformis strains

Divakaran, Dibu; Chandran, Aswathi; Chandran, Rahul

doi:10.1590/s1517-83822011000400022

Cited by 53 publications

(31 citation statements)

References 14 publications

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“…Production of starch degrading enzymes such as α ‐amylase and xylanase was enhanced in Bacillus spp. under anaerobic conditions (Divakaran, Chandran, & Pratap, ; Irfan, Asghar, Nadeem, Nelofer, & Syed, ). This seems to support the lower crude fibre content in the FerRB.…”

Section: Discussionmentioning

confidence: 99%

Fermenting rice bran as a carbon source for biofloc technology improved the water quality, growth, feeding efficiencies, and biochemical composition of African catfish Clarias gariepinus juveniles

et al. 2018

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In this study, African catfish (Clarias gariepinus) (9.68 ± 0.16 g, mean ± SE) were reared with biofloc technology (BFT) with three different carbon sources; raw rice bran (RRB) or when incubated (24 hr) with Bacillus species under aeration (cellular respiration, ResRB), or without aeration (fermentation, FerRB). The proximate composition, water solubility, and total soluble sugars of RRB, ResRB, and FerRB were measured. A control included fish cultured in a recirculating system. Water quality, biofloc production/proximate composition and subsequent effects to growth, feeding efficiencies, body proximate composition, and selected plasma biochemical parameters to triplicate groups of C. gariepinus were measured after 42 days. FerRB had the lowest crude fibre and higher total soluble sugars and water solubility compared to ResRB or RRB. Biofloc produced with FerRB had significantly higher (p < 0.05) crude protein. Ammonia‐N was significantly lower (p < 0.05) in the first 3 weeks in both control and FerRB treatments. Using FerRB significantly improved (p < 0.05) growth, feeding efficiencies, and whole‐body crude protein in African catfish compared to the control and ResRB. Therefore, using FerRB with BFT can be a highly effective strategy to create a zero‐exchange culture system while also significantly improving growth and feeding efficiencies of African catfish juveniles.

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Section: Discussionmentioning

confidence: 99%

Fermenting rice bran as a carbon source for biofloc technology improved the water quality, growth, feeding efficiencies, and biochemical composition of African catfish Clarias gariepinus juveniles

et al. 2018

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“…This genus is also extensively used to produce amylase, an enzyme with application in industries of food, starch liquefaction, saccharification, detergent, brewing, paper, textile and distilling. In this study, the most specific substrate to the screening of amylases-producers, the starch, was used, although others could be utilized, such as starchy with high content of starch [27].…”

Section: Discussionmentioning

confidence: 99%

Biosurfactant Production by Bacillus strains isolated from sugar cane mill wastewaters

Santos

Miranda²,

Silva

et al. 2019

Braz. arch. biol. technol.

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Biosurfactants possess diverse chemical properties and provide important characteristics to the producing microorganisms, which can act as surface-actives and emulsifiers of hydrocarbon and others water insoluble substances. Most of them are lipopeptides synthetized by Bacillus. This study evaluated the biosurfactant production by strains of Bacillus previously obtained from liquid residues of sugar-alcohol industry. The bacterial isolates LBPMA: BSC, BSD, J1, J2 and L1 were cultivated in medium that induces production of biosurfactants (Landy medium). During 48 h of incubation, at intervals of 12 h, the total contents of proteins, reducing carbohydrates and surfactant activity of the filtrated growth media free of cells were evaluated. The results showed that these strains use glucose as a source of carbon, energy and for synthesis of surfactant. In this medium (24 h), the best producer of biosurfactant was the strain LBPMA-J2, molecularly identified HIGHLIGHTS • Interest in biosurfactants has increased in the last two decades. • Surfactin from Bacillus is one of the most effective biosurfactants. • Bacillus species are known as the main producers of extracellular enzymes. • Isolation of new strains is strategic for several fields of biotechnology. Santos, E.C.L.; et al.

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“…It is able to easily metabolize nutrient content, favouring its growth against other bacterial strains in these substrates. This competition is mainly due to proteins degradation efficiency because its production of proteolytic enzymes [10][11].…”

Section: Introductionmentioning

confidence: 99%

Biomethane production improvement by enzymatic pre-treatments and enhancers of sewage sludge anaerobic digestion

Ágabo-García

Pérez

Rodríguez-Morgado

et al. 2019

Fuel

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Enzymatic hydrolysis is recognised as an effective pre-treatment for increasing biodegradability of sludge. In this work, isolated commercial enzymes as well as in-situ enzymes producer bacteria were used respectively as enhancers and pre-treatments of sewage sludge. Biodegradability of sample as well as biomethane potential production were studied. Results showed that depuration efficiencies in terms of CODs (73.5-85.5 %) and TVS (28.5-42.7 %) were more than twice the control value. In addition, pretreated samples as well as enhanced samples with enzymes generated more biomethane than control. The optimal ones, were those with the isolated proteases (P) and with bacteria (Bacillus licheniformis) treatment in-situ (F), producing a total volume of 72.4 ± 2.62 ml CH4 and 114 ml ± 0.46 CH4, respectively, increasing the biogas volume in 3.65 and 5.77 times respectively compared with control.

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Comparative study on production of α-Amylase from Bacillus licheniformis strains

Cited by 53 publications

References 14 publications

Fermenting rice bran as a carbon source for biofloc technology improved the water quality, growth, feeding efficiencies, and biochemical composition of African catfish Clarias gariepinus juveniles

Fermenting rice bran as a carbon source for biofloc technology improved the water quality, growth, feeding efficiencies, and biochemical composition of African catfish Clarias gariepinus juveniles

Biosurfactant Production by Bacillus strains isolated from sugar cane mill wastewaters

Biomethane production improvement by enzymatic pre-treatments and enhancers of sewage sludge anaerobic digestion

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