syed nizam | Rajiv Gandhi University of Health Sciences (original) (raw)
Related Authors
National Institute of Archaeology and Museum, Bulgarian Academy of Sciences
Uploads
Papers by syed nizam
日本生物工学会大会講演要旨集, Aug 2, 2007
Emerging Infectious Diseases, 2015
Biochemical Engineering Journal, 2009
The major aims of biology to understanding life at a systems level. Escherichia coli is a metabol... more The major aims of biology to understanding life at a systems level. Escherichia coli is a metabolically versatile bacterium able to respond to changes in environmental factors availability. The effect of pH downshift on fermentation characteristics was investigated in a continuous culture of Escherichia coli at aerobic and microaerobic conditions. Regardless of oxygen availability, higher levels of acetate were associated with lower biomass yields and lower glucose consumption rates at pH 5.5 as compared to the observations made at pH 7.0. Observed gene expressions indicated that the down-regulation of the glucose uptake rate corresponded to the down-regulation of ptsG gene expression which in turn was caused by the up-regulation of mlc gene under the positive control of Crp. In accordance with up-regulation of arcA gene expression at acidic conditions, the expressions of TCA cycle-related genes such as icdA and gltA, and the respiratory chain gene cyoA were down-regulated, whereas cydB gene expression was up-regulated. Decreased activity of the TCA cycle caused more acetate formation at lower pH levels. Under micro-aerobic condition, higher levels of formate and lactate were produced at lower pH due to up-regulation of pflA, yfiD and ldhA genes. Meanwhile, lower levels of ethanol were produced due to the down-regulation of adhE gene at lower pH, as compared to the observation at neutral pH. The combined effect of pH and temperature on gene expression was also investigated and observed that decreases in the specific glucose consumption rate were associated with increases in the specific acetate production rate. This type of information is useful for the production of recombinant proteins, bio-molecules, simultaneous saccharification and fermentation (SSF) and strain improvement.
Plant Tissue Culture and Biotechnology, 2009
The role of microorganisms obtained from jute (Corchorus spp.) in the retting of dry ribbons of j... more The role of microorganisms obtained from jute (Corchorus spp.) in the retting of dry ribbons of jute was determined. Efficiency of fungus on retting of green ribbon and dry ribbon of jute was also examined. Attempt was made to determine the effect of nature of the harvested jute plants on the production of cuttings and improvement of their fibre quality, and the impact of stem-water ratio and retting of its top and basal parts separately on the quality of fibre. Distribution and activity of microbial population for jute retting and their impact on the water quality of jute growing areas of Bangladesh was also surveyed. Utilization and suitability of retting effluents as a fertilizer in vegetable crops production were also determined. Micrococcus spp. were identified as an accelerator of jute retting. Referring to the recent advancements made in isolating completed/partial genes controlling desirable traits, it is suggested to use the modern molecular technology not only to improve t...
Medicinal plants are very ancient and are true natural medicines which are useful for the treatme... more Medicinal plants are very ancient and are true natural medicines which are useful for the treatment of different diseases. The entire world is in search of natural compounds having medicinal potency due to lesser side effect issues. Dryopteris filix mas is a fern and Botanist called it filix-mas means male fern The male fern is one of the most robust species that breed in our country .Its rhizome used medicinally. filicic acid, flavaspidic acid, filmaron, flavonoids are chemical constituents present in it and possess Mujaffif quruh, Qatil e kiram e shikam, Kasir e riyah actions. Studies has been done on its antioxidant,Antibacterial, antifungal, abortifacient actions.
日本生物工学会大会講演要旨集, Aug 2, 2007
Emerging Infectious Diseases, 2015
Biochemical Engineering Journal, 2009
The major aims of biology to understanding life at a systems level. Escherichia coli is a metabol... more The major aims of biology to understanding life at a systems level. Escherichia coli is a metabolically versatile bacterium able to respond to changes in environmental factors availability. The effect of pH downshift on fermentation characteristics was investigated in a continuous culture of Escherichia coli at aerobic and microaerobic conditions. Regardless of oxygen availability, higher levels of acetate were associated with lower biomass yields and lower glucose consumption rates at pH 5.5 as compared to the observations made at pH 7.0. Observed gene expressions indicated that the down-regulation of the glucose uptake rate corresponded to the down-regulation of ptsG gene expression which in turn was caused by the up-regulation of mlc gene under the positive control of Crp. In accordance with up-regulation of arcA gene expression at acidic conditions, the expressions of TCA cycle-related genes such as icdA and gltA, and the respiratory chain gene cyoA were down-regulated, whereas cydB gene expression was up-regulated. Decreased activity of the TCA cycle caused more acetate formation at lower pH levels. Under micro-aerobic condition, higher levels of formate and lactate were produced at lower pH due to up-regulation of pflA, yfiD and ldhA genes. Meanwhile, lower levels of ethanol were produced due to the down-regulation of adhE gene at lower pH, as compared to the observation at neutral pH. The combined effect of pH and temperature on gene expression was also investigated and observed that decreases in the specific glucose consumption rate were associated with increases in the specific acetate production rate. This type of information is useful for the production of recombinant proteins, bio-molecules, simultaneous saccharification and fermentation (SSF) and strain improvement.
Plant Tissue Culture and Biotechnology, 2009
The role of microorganisms obtained from jute (Corchorus spp.) in the retting of dry ribbons of j... more The role of microorganisms obtained from jute (Corchorus spp.) in the retting of dry ribbons of jute was determined. Efficiency of fungus on retting of green ribbon and dry ribbon of jute was also examined. Attempt was made to determine the effect of nature of the harvested jute plants on the production of cuttings and improvement of their fibre quality, and the impact of stem-water ratio and retting of its top and basal parts separately on the quality of fibre. Distribution and activity of microbial population for jute retting and their impact on the water quality of jute growing areas of Bangladesh was also surveyed. Utilization and suitability of retting effluents as a fertilizer in vegetable crops production were also determined. Micrococcus spp. were identified as an accelerator of jute retting. Referring to the recent advancements made in isolating completed/partial genes controlling desirable traits, it is suggested to use the modern molecular technology not only to improve t...
Medicinal plants are very ancient and are true natural medicines which are useful for the treatme... more Medicinal plants are very ancient and are true natural medicines which are useful for the treatment of different diseases. The entire world is in search of natural compounds having medicinal potency due to lesser side effect issues. Dryopteris filix mas is a fern and Botanist called it filix-mas means male fern The male fern is one of the most robust species that breed in our country .Its rhizome used medicinally. filicic acid, flavaspidic acid, filmaron, flavonoids are chemical constituents present in it and possess Mujaffif quruh, Qatil e kiram e shikam, Kasir e riyah actions. Studies has been done on its antioxidant,Antibacterial, antifungal, abortifacient actions.