TY - JOUR ID - 87070 TI - Response surface optimization of polyphenol extraction from petals of Hibiscus-rosa sinensis JO - Journal of Food and Bioprocess Engineering JA - JFABE LA - en SN - AU - Janarny, Ganesamoorthy AU - Ranaweera, Kamburawala Kankanamge Don Somathilaka AU - Gunathilake, Katugampalage Don Prasanna Priyantha AD - Department of Food Science & Technology, Faculty of Applied Sciences, University of Sri Jayewardenepura, Gangodawila, Nugegoda, Sri Lanka AD - Department of Food Science & Technology, Faculty of Livestock, Fisheries & Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila, Sri Lanka Y1 - 2022 PY - 2022 VL - 5 IS - 1 SP - 43 EP - 51 KW - Hibiscus rosa-sinensis KW - Optimization KW - Phenolics KW - Response Surface Method DO - 10.22059/jfabe.2022.341288.1113 N2 - Edible flowers of Hibiscus rosa-sinensis have been identified as a source of antioxidant phenolics. Thus, effective extraction of phenolics is important to efficiently utilize these flowers. The present study aims to make use of a central composite design, to investigate the effects of extraction variables on the three response variables; total phenolic content, total anthocyanin content and antioxidant activity. Central composite design with four independent variables including solid: liquid ratio, ethanol concentration, temperature and time were used for the simultaneous optimization of response variables. The optimum process parameters generated were 24.0% ethanol, 1:40 solid: liquid ratio, 44°C temperature and 41 minutes of extraction. The experimental values obtained for the response variables under the generated optimum conditions confirmed the validity of the proposed second-order polynomial model. The results from the simultaneous optimization demonstrated the application of feasible process parameters for the extraction of phenolics from Hibiscus rosa-sinensis flowers and the effective utilization of these flowers in food as well as the pharmaceutical industry. UR - https://jfabe.ut.ac.ir/article_87070.html L1 - https://jfabe.ut.ac.ir/article_87070_09b483ad8270ce40c59062458822451d.pdf ER -