Structural And Functional Analysis Of Key Proteins Involved In ESX-1 Secretion System Of M.tuberculosis: Novel Targets For Drug Developments | 5974
Journal of Analytical & Bioanalytical Techniques
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Flavour is usually the result of the presence, within complex matrices, of many volatile and nonvolatile components with diverse
chemical and physicochemical properties. A vast array of compounds may be responsible for the aroma of food products,
such as alcohols, aldehydes, esters, dicarbonyls, short to medium chain-free fatty acids, methyl ketones, lactones, phenolic
compounds and sulphur compounds. The use of enzymes to improve the traditional chemical processes of food manufacture has
been developed in the past few years for the production of nonvolatile components. Lipases are the most versatile biocatalysts and
bring about a range of bioconversion reactions such as hydrolysis, interesterification, esterification, alcoholysis and aminolysis
aragao et al.,
2011). Since lipases are widely used in food industries, it is necessary to study their performance during the
esterification reaction. Accurate control of lipase concentration, alcohol and/or acid concentration, temperature and reaction
time is required to maximize the production of flavour ester.
In the study, the esterification percentage of the enzymatic synthesis of ethyl butyrate production has been evaluated by using
factorial design and response surface methodology. In order to establish the optimal conditions of esterification, temperature,
ethanol/butyric acid molar ratio, enzyme concentration and butyric acid concentration were evaluated in a fractional factorial
�1) followed by a 24 central composite rotatable design (CCRD) , response surface methodology (V.C. ARAG�O
2011) and compared with genetic algorithms which is an stochastic evolutionary optimization technique. These type of
evolutionary algorithms have gained popularity in solving optimization problems. Genetic algorithm which is more effective
regardless of the nature of the objective functions and constraints and have been well known to provide global optimal solutions.
Three basic operations used in GA: Reproduction, Crossover and Mutation. The results indicate the genetic algorithm is able to
generate the optimal conditions for maximum esterification percentage within reasonable number of cycles. The performance of
the model is evaluated by comparing GA predictions with the RSM model.
J. S. Eswari has obtained her M.Tech Biotechnology from IIT, Kharagpur. Currently working as Woman-Scientist at IICT, Hyderabad and pursuing Ph.D from IIT, Hyderabad. Published few papers in reputed journals and worked in sponsored projects. P Swapna Reddy has obtained her M.Tech Chemical Plant Design from NIT Karnataka. Currently working as Senior Research Fellow at IICT, Hyderabad and pursuing Ph.D from IIT, Bombay. Published few papers in reputed journals and international conferences.
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