Determination of Ascorbic Acid Content of Some Capsicum Cultivars by Cyclic Voltammetry performed at G.C.E. by External Standard Series Calibration Method

A method has been developed to find out ascorbic acid content in five different chili cultivars included in regular diet viz Green ghotki, Yellow ghotki, Green maliri, Green germane, and Surkh. Samples were analyzed for their ascorbic acid content to evaluate their nutritional importance by cyclic voltammetry by external standard series calibration method. Data evaluated were subjected to investigate daily intake of ascorbic acid in the Pakistani diet. The results showed that almost all cultivars contain appreciable amount of ascorbic acid, may varied according to type of samples. In our studied samples, Green (mature/immature) have high antioxidants in contrast to mature (Yellow) and sun dried over mature (Surkh). AA concentration and daily intake were discovered in an alignment of Green germane [(4.06 mg/100 g) & (0.49 mg/d)] > Green maliri [(3.08 mg/100 g) & (0.37 mg/d)] > Green ghotki [(2.11 mg/100 g) & (0.25 mg/d)] > Yellow ghotki [(2.08 mg/100 g) & (0.25 mg/d)] > Surkh [(0.8 mg/100g) & 0.06 mg/d)], respectively. Intake of fresh green capsicum is recommended for fulfillment of daily antioxidant requirement. This method is found to be efficient and accurate as percentage recovery is found to be 98.34%.