Extraction of phenolic compounds fromChlorellasp. microalgae using pressurized hot water: kinetics study

Chlorellasp.are among the highest cultivated species of microalgae. They are considered as an important functional food due to their abundance and valuable health benefits. It would be useful to develop an effective method for phenolic compound extraction fromChlorellasp.using safe technology and green solvents for the applications in food and pharmaceutical fields. Pressurized hot water extraction (PHWE) is an alternative for this purpose. PHWE was employed to extract phenolic compounds fromChlorellasp. microalgae at temperatures between 100 and 250 degrees C. The data collected is used to create the kinetics of the extraction process. The kinetics studies revealed that the extraction fromChlorellasp. microalgae using pressurized hot water treatment follows first-order kinetics and is strongly dependent on temperature. An increasing trend in the calculated values of mass transfer coefficient,k, was noticed, with increasing temperature. The activation energy,E-a, was calculated as 11.146 kJ/mol for the extraction treatment.

Automated summary

Chlorella species are highly cultivated microalgae with valuable health benefits, and an effective method using pressurized hot water extraction (PHWE) has been developed to extract phenolic compounds from Chlorella microalgae. The extraction process follows first-order kinetics and is strongly dependent on temperature, with increasing temperature leading to higher mass transfer coefficient values. The activation energy for the extraction treatment is calculated as 11.146 kJ/mol.