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Process optimisation of effective partition constant in coconut water via progressive freeze concentration

Jusoh, Mazura and Mohamed, Nor Naimah and Yahya, Norshafika and Musa, Roshashimah and Mohamad, Zurina and Ngadi, Norzita and A. Rahman, Roshanida and Johari, Anwar and Zakaria, Zaki Yamani (2018) Process optimisation of effective partition constant in coconut water via progressive freeze concentration. Chemical Engineering Transactions, 63 . pp. 403-408. ISSN 2283-9216


Official URL: http://dx.doi.org/10.3303/CET1863068


Concentration technique via progressive freeze concentration was applied to increase the concentration of coconut water for commercialisation. The process will eliminate portion of water from coconut water and retain pure nutritional compound with high sugar content. To obtain the optimum condition, which is the objective of this study, optimisation process was conducted using Response Surface Methodology (RSM) through STATISTICA Software. RSM was utilised to optimise the process parameters for effective partition constant (K) in progressive freeze concentration (PFC) of the coconut water. The effects of circulation flowrate, circulation time, initial solution concentration and coolant temperature on effective partition constant were observed. Results show that the data adequately fit the second-order polynomial model. The linear and quadratic independent variables, circulation flowrate, circulation time, initial concentration and coolant temperature have significant effects as well as interactions on the effective partition constant. It was observed that the optimum process parameters within the experimental range for the best K would be with circulation flowrate of 3,400 mL/min, circulation time of 23 min, initial concentration of 3.4 % Brix and coolant temperature of -7 °C. Under these conditions, the K can be enhanced up to 0.3.

Item Type:Article
Uncontrolled Keywords:Response Surface Methodology (RSM), STATISTICA Software
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:84436
Deposited By: Widya Wahid
Deposited On:11 Jan 2020 15:08
Last Modified:11 Jan 2020 15:08

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