Posted by admin on Aug 31, 2019 in |
The current work defines development of a simple, rapid and precise method based on gas chromatography coupled with Flame Ionization Detector (GC-FID) for the quantitative estimation of diphenhydramine (DPH) present in the marketed formulations following the principles of green analytical chemistry. The analysis was performed using Zebron Phase: ZB-DRUG-1 column with Nitrogen as a carrier gas having a flow rate of 1 ml/min. The injection volume was 1 µL and with the split ratio of 1:10. The retention time of the drug was found to be 4.5 minutes. The developed method was validated according to the ICH guidelines, proving the method to be sensitive towards the analyte with accuracy (mean recovery = 98%), linearity in the range of 2-10 µg/ml (r2 0.993), precision (intraday = 1.118% RSD, interday = 1.16 % RSD), LOD 0.2 µg/ml and LOQ 0.5 µg/ml. The degradation study showed that the drug remains stable in acid, base, neutral, oxidation, and photolytic method. The developed method can be effectively employed for the day to day analysis...
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Posted by admin on Aug 31, 2019 in |
Genotoxicity has fully-grown into a serious question for the cause of several cancers. In this article, we discuss the basics of genotoxicity, the chemicals which cause these genetic damages and also their mechanism of action. The discovery of new drug needs a thorough investigation for its safety and efficacy before their release into the market so, the drug development process and drug attrition, regulatory tests to detect compounds with genotoxic and carcinogenic potential are discussed in the article. And also, a brief discussion about the recent advances in genotoxicity testing, pre-clinical investigations generally to obtain the basic fundamental profile of toxicological and new chemical entities (NCE), the integration of the cytogenetic tests into repeated dose toxicity studies can be used to satisfy the in-vivo cytogenetic data requirement in CFR are explained. Finally, a brief account of the drugs being used in present days, and also some plant products which show antimutagenic effects have been emphasized....
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Posted by admin on Aug 31, 2019 in |
Selecting the best possible design is an uphill task considering a lot of criteria which must be scrutinized while choosing any design out of many alternative design options available. The experimental design is often compared and selected based on alphabetical design optimality criteria, like A, D, G or V. Each of them attempts to summarize any one important characteristic of the selected design. G-optimality criteria favor those experimental designs which are having the smallest maximum prediction variance over the entire region of interest. It does not consider the distribution of the magnitude of the prediction variance throughout the region. Graphical methods like variance dispersion graph and the fraction of design space plots can be used to overcome this drawback. These graphical methods are explored extensively for comparing the quality of prediction throughout the design space. It serves as a useful tool to assess the prediction performance of the design and making a comparison between experimental designs. The fraction of the design space plot provides a comprehensive picture of the...
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Posted by admin on Aug 31, 2019 in |
In this present investigation author reporting the anti-bacterial activity of five new azo methines, namely 2-((1-hydroxy-2- methyl propan-2-ylimino) methyl)-6-methoxyphenol (AZM1), 4-((1-hydroxy-2- methyl propan-2-ylimino) methyl)-6-methoxyphenol(AZM2), 4-((1-hydroxy-2-methyl propan-2-ylimino) methyl)-2,6,dimethxy phenol (AZM3), 2- (3, 4- dimethoxybenzylideneamino)- 2- methylpropan-1-ol (AZM4) and 2-(3,4,5-trimethoxybenzylideneamino)-2-methylpropan-1-ol (AZM5) against and Bacillus thuringiensis, E. coli bacteria. All new five novel Azomethines were synthesized by the condensation of 2-Amino-2-Methyl-1-Propanol with 2- Hydroxy- 3- methoxybenzaladehyde, 4-Hydroxy- 3- Methoxy-Benzaldehyde, 4- Hydroxy- 3, 5- Dimethoxy Benzaldehyde, 3,4-Dimethoxy Benzaldehyde and 3, 4, 5-Trimethoxy Benzaladehyde respectively, in methanol-water (1:1 ratio) at 42 ºC for 8 h. All the azomethines were characterized by UV, IR and thermal elemental analyzer. Anti-bacterial studies were carried out by using Paper disc diffusion method, beef extract is used as bacterial source, chloromphenicol and ketocanazole used as reference standards, five azomethines gave the following order of antibacterial activity and order of zone of inhibition was AZM5 (12mm) > AZM4 (7mm) > AZM3 (10mm) > AZM1 (9mm) > AZM2 (8mm) against E. coli and AZM5 (11mm) > AZM4 (10mm) > AZM3 (9mm)...
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Posted by admin on Aug 31, 2019 in |
Probiotics are live microorganisms that when introduced orally positively contribute to the activity of the intestinal microflora and the health of its host. Various studies showed that probiotics are potentially able to contribute to treatments of many diseases. They may not cure any disease, but can significantly improve the patient’s condition and also can prevent many infections. Recent studies confirmed that gut microbiota has a direct connection to the behavior and development of the brain. This review is done in two parts. The first part discusses how micro-encapsulation can improve targeted delivery of probiotics where second part discusses the effects of probiotics on various diseases. On the first half of this review, we will see micro-encapsulation allows core ingredients or probiotics to be separated from the environment by a protective coating which can enhance shelf-life of probiotics. The objective of this review is to study the efficiency of different encapsulation materials and methods to understand and control the delivery of probiotic by the conventional method to improve drug uptake,...
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