Keywords: Extraction; Musa balbiasana cv. Saba; physicochemical

Abstract

In this study, Musa balbiasana cv. Saba peel oil and cooking oil were characterised for physicochemical characteristics and compared for potential biodiesel feedstocks. Chemical characterisation showed that Musa balbiasana cv. Saba peel oil was slightly more acidic compared to cooking oil, which were pH 5.23 and 6.06, respectively. The acid value of Musa balbiasana cv. Saba peel oil was lower than cooking oil, which were 0.64 mg/KOH and 0.74 mg/KOH, respectively. Free fatty acid analysis indicated that cooking oil has a higher value (0.37%) than Musa balbiasana cv. Saba peel oil (0.32%). In addition, the saponification value for Musa balbiasana cv. Saba peel oil was slightly lower compared to cooking oil, which were 74.09 (mg KOH/g oil) and 74.60 (mg KOH/g oil), respectively. The functional groups of both feedstocks were analysed using FT-IR to determine the -C=O stretching of methyl ester, -C-H stretch, -CH2 bend, and -CH3 bend asymmetric. The feedstocks were further analysed using GC-MS to detect the presence of the ester group. It was found that Musa balbiasana cv. Saba peel oil contained a higher ester group compared to cooking oil.