Evaluation of Phytase Production by Fish Gut Bacterium,<i>Bacillus subtilis</i>, for Processing of<i>Ipomea aquatica</i>Leaves as Probable Aquafeed Ingredient

Khan, Argha; Ghosh, Koushik

doi:10.1080/10498850.2012.669032

Cited by 25 publications

(12 citation statements)

References 54 publications

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“…JK1 (Ahmadi et al, 2008) and B. pabuli (Frandberg and Schnurer, 1994) were capable of producing a high amount of chitinase at alkaline condition. Optimum chitinase production at alkaline pH noticed in the present study might be due to the fact that the bacterial symbiont were isolated from the gut of agastric carps and the bacterium was adapted to the alkaline pH therein as evidenced for phytase-producing gut bacteria in some carp species (Khan and Ghosh, 2013). A pH beyond the optimum level may alter the amino acid composition of the enzyme and thereby diminishes the enzyme activity (Esakkiraj et al, 2009).…”

Section: Discussionmentioning

confidence: 98%

Evaluation of Chitinolytic Gut Microbiota in Some Carps and Optimization of Culture Conditions for Chitinase Production by the Selected Bacteria

Banerjee¹,

Mukherjee²,

Ghosh³

2015

J microb biotech food sci

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Present study was aimed at isolation of autochthonous chitinase-producing bacteria from the gastrointestinal tracts of 3 Indian Major Carps (Labeo rohita, Catla catla, Cirrhinus mrigala) and 3 exotic carps (Hypophthalmichthys molitrix, Ctenopharyngodon idella, Cyprinus carpio). Altogether, 119 bacteria were isolated from both the proximal and distal intestine and screened for chitinolytic activity. On the basis of chitin hydrolysis zone, 63 isolates were primarily selected for chitinase production, from which 34 potent strains were further studied for quantitative enzyme assay. Amongst them, the strains HMH1 and CMF2 exhibited potent chitinolytic activity and were identified as Bacillus pumilus (KF454036) and Bacillus flexus (KF454035), respectively by 16S rRNA partial gene sequence analysis. Optimization of various fermentation parameters (e.g., temperature, pH, inoculums size, surfactant, colloidal chitin concentration, incubation time, carbon sources, organic and inorganic nitrogen sources) were carried out in chitinase production medium. Incubation for 72 h at 350C and initial pH 7.5 revealed optimum chitinase productions by B. pumilus HMH1 in the media supplemented with colloidal chitin 0.1% (w/v), maltose 2% (w/v), ammonium sulphate 1.0% (w/v) and Tween-80 0.2% (v/v). However, B. flexus CMF2 required 48 h incubation at 35°C and initial pH 8.0 with colloidal chitin 0.15% (w/v), sucrose 1% (w/v), yeast extract 2.0% (w/v) and Tween-20 0.2% (v/v) supplementation for optimum yield. The results indicate that there is ample scope for further research to appraise fish gut microorganisms for chitinase production or as probiotics to improve feed efficiency in fish.

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Section: Discussionmentioning

confidence: 98%

Evaluation of Chitinolytic Gut Microbiota in Some Carps and Optimization of Culture Conditions for Chitinase Production by the Selected Bacteria

Banerjee¹,

Mukherjee²,

Ghosh³

2015

J microb biotech food sci

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“…, ; Ramachandran et al . ; Ramachandran & Ray ; Khan & Ghosh ). The major advantages for utilization of oil cakes and terrestrial or aquatic macrophytes as substrates in SSF might be their immense economic viability and also the scope that they provide for nutrient recycling in an eco‐friendly way (Khan & Ghosh ).…”

Section: Solid‐state Fermentation (Ssf): An Approach For Bioprocessinmentioning

confidence: 99%

“…; Ramachandran & Ray ; Khan & Ghosh ). The major advantages for utilization of oil cakes and terrestrial or aquatic macrophytes as substrates in SSF might be their immense economic viability and also the scope that they provide for nutrient recycling in an eco‐friendly way (Khan & Ghosh ). As sustainability of the aquaculture industry depends on the availability of low‐cost and high‐quality feeds, the application of microbial biotechnology might offer a scope for preparation of high‐quality feeds by bioconversion of low‐cost feed ingredients through SSF (Esakkiraj et al .…”

Section: Solid‐state Fermentation (Ssf): An Approach For Bioprocessinmentioning

confidence: 99%

Applications of plant ingredients for tropical and subtropical freshwater finfish: possibilities and challenges

Ghosh

Ray

Ringø

2018

Reviews in Aquaculture

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The demand for cultured finfish has increased tremendously during the last decades, but the success of intensive farming is dependent on several factors, namely management, dietary supplementations and welfare. During the last decades, increasing demand, high price and limited supply of fishmeal have emphasized the need for alternative protein sources in aquafeeds, but plant proteins possess a series of endogenous antinutritional factors (ANFs; e.g. protease inhibitors, tannin, mimosine, phytic acid, nonstarch polysaccharides), and they must be destroyed or inactivated. Inclusion of alternative protein sources has resulted in production losses and is a concern for farmers. However, the problem with ANFs might be solved using advanced processing techniques. The present review, focusing on tropical and subtropical freshwater finfish, will discuss findings on applications of conventional methods, as well as fermentation technology for deactivation of endogenous ANFs, and the use of probiotics with ANF degrading potential when plant ingredients are included in fish feeds.

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“…Adding phytase to animal feed eliminates the need for additional phosphorous and reduces the phosphorous in animal waste (Binod et al, 2013). In recent years, the newest studies have employed raw materials such as aquatic weeds (Khan and Ghosh, 2013), wheat bran, rice bran, groundnut oil cake (Shivanna and Venkateswaran, 2014), orange pomace (Maderia et al, 2012), waste vinegar residues (Wang et al, 2011), linseed oil cake (Rani and Ghosh, 2011), citrus pulp (Neves et al, 2011), rice husks, fish meal, corn seed, and corn gluten (Javed et al, 2010). ; fungal strains such as Mucor, Penicillium, Aspergillus, and Rhizopus spp.…”

Section: Production Of Microbial Enzymes For Food Applicationsmentioning

confidence: 99%

Microbial biosynthesis of enzymes for food applications

Ventura-Sobrevilla

Boone-Villa

Rodríguez

et al. 2015

Improving and Tailoring Enzymes for Food Quality and Functionality

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Evaluation of Phytase Production by Fish Gut Bacterium,Bacillus subtilis, for Processing ofIpomea aquaticaLeaves as Probable Aquafeed Ingredient

Cited by 25 publications

References 54 publications

Evaluation of Chitinolytic Gut Microbiota in Some Carps and Optimization of Culture Conditions for Chitinase Production by the Selected Bacteria

Evaluation of Chitinolytic Gut Microbiota in Some Carps and Optimization of Culture Conditions for Chitinase Production by the Selected Bacteria

Applications of plant ingredients for tropical and subtropical freshwater finfish: possibilities and challenges

Microbial biosynthesis of enzymes for food applications

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