Microwave assisted extraction of the bioactive compounds from peel/pulp of Citrus medica L. var. sarcodactylis swingle along with its nutritional profiling

Citrus medica L. var. sarcodactylis swingle and it is known as Foshou fruit has gained significant importance by researchers because of its large number of functional benefits. In this research we particularly focused on the evaluation of antioxidant and nutritional properties of the peel and pulp of the Foshou. The Foshou peel showed significantly higher antioxidant properties and nutritional contents than the pulp, excluding water, carbohydrate, and energy content. The water extract of Foshou peel and pulp contained 227.45 and 88.76 mg GAE/100 g fresh weight (FW) of total phenolic compounds, with IC 50 DPPH · -scavenging activity 22.79 and 54.74 μg GAE/mL, respectively. The antioxidant capacity for Foshou peel and pulp was 214.81 and 71.53 mg Trolox equivalents per 100 g FW respectively. Our results indicated increased levels of pyridoxine, thiamin, riboflavin, copper, and iron in Foshou peel whereas thiamin and pyridoxine were the highest in the pulp. In this research, we found that 100 g of Foshou contribute significantly to the recommended daily intake (RDI) of nutrients. These results draw attention towards the potential use of Foshou as a source of health-enhancing compounds.