Physicochemical analysis of oil extracted from roselle (Hibiscus sabdariffa L.) seeds in Kano metropolis

Abstract

Roselle seeds are a byproduct of roselle processing for juices or other related items. The production of oil from roselle seed serves two  purposes: economic and environmental. The current study's goal is to look into the potential uses of roselle seed oils. Roselle seeds were  harvested and prepared for use by decocting, drying, and crushing. The oil was extracted using a Soxhlet system, and its physicochemical properties were evaluated using standard techniques. The physicochemical characteristics studied yielded the following results. The  physical parameters of the oil were evaluated, and the findings were 19.20.452 percent oil content, 1.290.001 refractive index, and  0.890.009 specific gravity, respectively. Also the chemical properties which are peroxide value, free fatty acids, acid value, saponification  value, and iodine value were tested the results were recorded 4.33±0.943 meq/kg, 0.19±0.011 %, 0.39±0.023 mgKOH/g, (60.35±0.616 mgKOH/g, 51.16±0.581 g/100g, respectively. Characteristics of roselle seed oil suggest that it could have important applications either as  cooking or industrial.