Effect of flow rate, particle size and modifier ratio on the supercritical fluid extraction of anthocyanins from Hibiscus sabdariffa (L). Issue 1 (September 2020)

• Record Type: Journal Article
• Authors: Idham, Zuhaili; Zaini, Ahmad Syahmi; Putra, Nicky Rahmana; Rusli, Nurfarhain Mohamed; Mahat, Noor Sabariah; Yian, Lee Nian; Che Yunus, Mohd Azizi
• Is Part Of: IOP conference series. Volume 932:Issue 1(2020)
• Publication Date: 2020-09
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/932/1/012031
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: This work aims to evaluate the effects of different particle size, flow rate and modifier ratio on the extraction yield and anthocyanins content of Hibiscus sabdariffa L (Roselle) by using supercritical carbon dioxide (SC-CO2 ) method. SC-CO2 extraction was carried out at constant pressure and temperature, 10MPa and 70°C respectively with 75% (v/v) ethanol as a modifier. The result shows that 120 minutes was the efficient extraction time at a determination of flow rate. The trend and results for the extraction yield and anthocyanins were varied in all parameters studied. The finding shows that a low flow rate (4 ml/min), smaller particle size (200-355 µm) and high percentage ratio of modifier (10%) could obtain more anthocyanins content. Thus, the manipulation of several parameters in the SC-CO2 extraction process could enhance the selectivity of anthocyanins extraction from the total extract.