Abstract
Solid-liquid batch extraction of total polyphenol content from curry leaves (Murraya koenigii L.) was studied in this paper. The effect of different solvent concentrations and temperatures on total polyphenol content was investigated by performing batch experiments. The experimental studies showed that the kinetics of solid-liquid batch extraction was influenced by different solvent concentrations and temperatures. In solid-liquid batch extraction, more recovery of total polyphenols was obtained for 50% (v/v) aqueous methanol and at 333 K temperature. The total polyphenol obtained at optimum conditions was 79.34 mgGAE/L. Mathematical modelling is an important engineering tool used to study the kinetics of extraction as well as in the design of the extraction process to reduce time, energy, and chemical reagents. Peleg and Power law, the two mathematical models, were used to study the kinetics of the batch extraction process. The Peleg model showed the best fit to explain the kinetics of process with R2 > 0.99. Further conventional extraction methods are compared with the novel extraction method.
Highlights
Solid-liquid batch extraction of total polyphenol content from curry leaves (Murraya koenigii L.) was studied in this paper. e effect of different solvent concentrations and temperatures on total polyphenol content was investigated by performing batch experiments. e experimental studies showed that the kinetics of solid-liquid batch extraction was influenced by different solvent concentrations and temperatures
Polyphenols are the plant secondary metabolites which constitute phenolic acids, flavonoids, stilbenes, and lignans. ese are the natural antioxidants that replace synthetic antioxidants such as propyl gallate (PG), butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), and tertiary butylhydroquinone (TBHQ). e consumption of food rich in polyphenols offers better protection against the development of cancers, cardiovascular diseases, diabetes, osteoporosis, and other diseases. ese compounds are found in fruits, vegetables, spices, cereals, and plants with varied concentrations [1,2,3,4]
When meeting the maximum level in the extraction chamber, the condensed solvent from the extraction chamber was flushed back into the round bottom flask by a siphon. is condensed solvent carries the solutes into the solvent. e extraction was performed for 7 h and sample was analysed for the total polyphenol content. e result obtained from the Soxhlet method is considered as maximum value of polyphenol concentration and the rest of the experimental values from batch and ultrasound-assisted extraction were compared with this
Summary
Solid-liquid batch extraction of total polyphenol content from curry leaves (Murraya koenigii L.) was studied in this paper. E experimental studies showed that the kinetics of solid-liquid batch extraction was influenced by different solvent concentrations and temperatures. Peleg and Power law, the two mathematical models, were used to study the kinetics of the batch extraction process. Fick’s law of diffusion [15,16,17], first- and second-order kinetic modelling [4, 18, 19], Peleg model [2, 13, 20], Power law model [21], and two-site kinetic model [14, 19, 22] are used in the extraction study of polyphenols and other bioactive compounds from plant matrix using conventional and advanced extraction methods. E present paper focuses on the study of the effect of solvent concentration and temperature on the recovery of total polyphenols from curry leaves by solid-liquid batch extraction. To have insights into the mathematical modelling, an attempt has been made to study the extraction kinetics by the application of Peleg model and Power law model to the obtained experimental data. e conventional extraction methods are compared with the novel method in terms of percentage recovery of polyphenols
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
