Extraction of saponin from gleditsia peel and applications on natural dishwashing liquid detergent

Abstract Natural-derived products are becoming a new trend in the household products. In this research, crude saponin was extracted from Gleditsia peel by soxhlet extraction method. This compound was the main component that was used for producing natural dishwashing liquid detergent which is environmentally friendly and safe for the user’s health. The highest crude saponin recovery yield is 31%, when the extraction process is performed for 2 days, at 85°C and the solvent is ethanol 40%. Saponin was used as emulsifier and surfactant, combine with other natural ingredients to produce natural dishwashing liquid detergent. That was formulated with ingredients of natural origin (9% crude saponin extracted from Gleditsia peel, 5% coco-glucosides, 1.5% carboxymethyl cellulose, 0.05% pomelo esential oil, pH regulator from banana peel ash and water). This product was evaluated through color, odor, pH, viscosity, washing ability and foaming properties. The results showed that this product has similar cleansing properties to commercial dishwashing liquids.