Posted by admin on Apr 30, 2015 in |
Epsilon poly-L-lysine (ε-PL) is a nontoxic biopolymer widely used in food and pharmaceutical industry. The present work reports the nutritional requirements for submerged fermentation of Streptomyces noursei NRRL 5126 using a combination of one factor at a time and statistical orthogonal array method. Two-fold increase in ε-PL productivity (74 mg/L) was observed using optimized medium containing glycerol as carbon source along with proteose peptone and ammonium sulphate as nitrogen source. Various metabolic precursors such as amino acids, tricarboxylic acid cycle intermediates were investigated for improved production of ε-PL. Four fold increase (74 mg/L to 310 mg/L) in ε-PL production was achieved by incorporation of L-aspartate (2mM) and citric acid (5mM). Fed batch fermentation for ε-PL production with intermittent feeding with glycerol and in combination with metabolic precursors was studied. Fed batch fermentation with intermittent feeding of glycerol gave a maximum yield of 233 mg/L. Productivity was further enhanced and reached a maximum of 408 mg/L by addition of glycerol along with 5 mM citric acid after 24 h and...
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Posted by admin on Apr 30, 2015 in |
The objective of the present work is to develop simple, precise and accurate colorimetric methods for the estimation of aripiprazole (ARP), tapentadol (TAP) using chloranilic acid reagent. ARP belongs to the class of antipsychotics. TAP is centrally acting analgesic drug. The methods are based mainly on charge transfer complexation of these drugs with p-chloranilic acid to give magenta purple colored products which were extracted into chloroform. The products were quantified at 543 nm for both ARP and TAP. The linearity of the methods was assessed in the range of 80-400 µg/ml for ARP and 200-1000µg/ml for TAP, respectively. The LOD and LOQ are 5.17 and 15.66; 82.5 and 250 for ARP and TAP, respectively. The colorimetric methods were extensively validated as per ICH guidelines and all the parameters were within the acceptance criteria with a correlation of 0.9999 and the % RSD less than 2. The results of the accuracy studies were nearer to 100%. The methods were proven to be more accurate, simple, precise and rapid by statistical...
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Posted by admin on Apr 30, 2015 in |
Objective: The present study was an effort to evaluate the effect of Ocimum sanctum on plasma concentration of metformin HCl and investigating its pharmacokinetic parameters using bioanalytical method. Methods: Seven groups comprising of six rats were used. Group I served as normal control and Group II was negative control of Streptozotocin induced Diabetic rats. Group III received 100mg/kg p.o. Metformin alone while Group IV and V were administered with 100mg/kg and 150mg/kg p.o. extract respectively. Group VI and VII were given metformin and extract in combination. Blood glucose level was determined in treated rats for 0.5, 2, 4, 8, 12 and 24hr as part of protocol I and directly on 2nd, 4th and 7th day as part of protocol II. RP-HPLC method was developed and validated for estimation of plasma levels of metformin HCl in plasma. With the help of above developed method, pharmacokinetic parameters were evaluated in plasma for metformin alone and combination with Ocimum sanctum. Results: RP-HPLC method was developed successfully for determination of plasma concentration of...
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Posted by admin on Apr 30, 2015 in |
Diabetes is a non communicable chronic metabolic disease characterized by high blood glucose level in the body. Targeting alpha amylase to control diabetes has long been studied. This study focused on developing pharmacophore model for set of inhibitor that possess anti amylase activity based on previous studies. Developing a pharmacophore model for these compound yields a hypothesis of ADDRR. Furthermore 3D QSAR model is carried out with good correlation activity for training set as .98 and test set as .92. Database screening for the developed model list out top compounds. High throughput virtual screening is performed for this top compound set. Two ligands quercetin 3-glucosyl rhamnosyl galactoside and rhodionin is found to have good binding affinity over alpha...
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Posted by admin on Apr 30, 2015 in |
The experiment was performed at the Department of Pharmacology in collaboration with the animal house Microbiology Department, Bangladesh Agricultural University, Mymensingh during the period from Jan 2005 to May 2005. To complete the research work following steps were followed.The aim of this study was to assess the possible comparative efficacy of Turmeric (Halud), Garlic (Rashun) and Aloe (Ghrita kumari) with Antibiotic Nebanol (Neomycin Sulphate and Bacitracin Zinc) on artificially induced wound in 2.5 cm length and 0.5 cm depth were made on the two thigh muscles an experimental model. Twenty five guinea pigs of both sexes age ranged between 6 to 8 months were divided into five groups (each group containing five animals). The first, second and third groups received herbal medicine e.g.; Turmeric paste, Garlic paste, Aloe gel and fourth group received Antibiotic Nebanol powder (Neomycin Sulphate and Bacitracin Zinc) respectively. The fifth/control groups were observed without medicine. Turmeric, Garlic, Aloe & Nebanol treatment reduced the wound within 12, 15, 17 & 14 days respectively. On the other...
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