Publications by authors named "Davender Singh"

The present work reports a clear and improved hydrothermal methodology for the synthesis of MoSe nanoflowers (MNFs) at 210 °C. To observe the effect of temperature on the fascinating properties, the process temperature was modified by ±10 °C. The as-prepared MNFs were found to consist of 2D nanosheets, which assembled into a 3D flower-like hierarchical morphology van der Waals forces.

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Among different microbes, fungi are proficient candidates for the extracellular synthesis of iron nanoparticles. For biogenic synthesis of iron nanoparticles, a thermophilic mould Myceliophthora thermophila BJTLRMDU7 was used in this study. Mycogenic magnetic nanoparticles were used for phosphatase immobilization and therapeutic applications such as antimicrobial and antimalarial activity.

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Phytases are important enzymes used for eliminating the anti-nutritional properties of phytic acid in food and feed ingredients. Phytic acid is major form of organic phosphorus stored during seed setting. Monogastric animals cannot utilize this phytate-phosphorus due to lack of necessary enzymes.

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Green synthesis of iron nanoparticles is a highly fascinating research area and has gained importance due to reliable, sustainable and ecofriendly protocol for synthesizing nanoparticles, along with the easy availability of plant materials and their pharmacological significance. As an alternate to physical and chemical synthesis, the biological materials, like microorganisms and plants are considered to be less costly and environment-friendly. Iron nanoparticles with diverse morphology and size have been synthesized using biological extracts.

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Microbial phytases are potentially excellent candidates for eliminating anti-nutrient i.e. phytic acid, due to hydrolysis of phospho-monoester linkages present in the phytic acid.

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Phytases are the most widely used food and feed enzymes, which aid in nutritional improvement by reducing anti-nutritional factor. Despite the benefits, enzymes usage in the industry is restricted by several factors such as their short life-span and poor reusability, which result in high costs for large-scale utilization at commercial scale. Furthermore, under pelleting conditions such as high temperatures, pH, and other factors, the enzyme becomes inactive due to lesser stability.

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Background: Phytic acid acts as anti-nutritional factor in food and feed ingredients for monogastric animals as they lack phytases.

Objective: Phytase production by Bacillus subtilis subsp. subtilis JJBS250 was studied in solid-state fermentation and its applicability in dephytinization of food.

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Production of cellulolytic and xylanolytic enzymes by was enhanced using response surface methodology in solid-state fermentation (SSF) using wheat straw and cotton oil cake. Cellulolytic and xylanolytic enzymes were partially purified by ammonium sulfate precipitation followed by ion exchange and gel filtration chromatographic techniques. Xylanase of is neutral xylanase displaying optimal activity at 60 °C with and values of 0.

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Cane molasses has been employed as a cost-effective medium for enhanced xylanase production in submerged fermentation. subsp. JJBS250 produced xylanase (15.

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A novel protease-resistant and thermostable phytase from Bacillus subtilis subsp. subtilis JJBS250 was purified 36-fold to homogeneity with a combination of ammonium sulfate precipitation followed by Q-Sepharose and Sephadex G-50 chromatographic techniques. The estimated molecular mass of the purified phytase was 46 kDa by electrophoresis with optimal activity at pH 7.

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