The Effect of Processing in Green Peas on Antioxidants


Abstract in English

The changes in green peas, processed by using freezing and bleaching were compared with their chemical composition (moisture, ash, sugar, fat). Effect of freezing and bleaching processes of green peas on the ascorbic acid, total phenolic compounds,and antioxidant activity were investigated. Significant changes were occurred between fresh and processed peas with regard to their content of ascorbic acid, total phenols, and antioxidant activity as measured by DPPH. Vitamin C content reduced to 65% in frozen peas and to16% in bleaching peas. The decreased in total phenols was less, being 150mg/100g fw in fresh peas reduced to 140 mg/100g fw in bleaching peas, and reached 120mg /100g fw in freeze peas. These changes have been reflected significantly (P<0.05) in antioxidant activities. Storage of green peas, frozen or boiled peas, for 8 weeks, resulted in significant loss in vit C, antioxidant activity(P<0.05).

References used

A. O. A. C. (2000). Official methods of Analysis of the Association of official Analytical Chemists, 17ed Maryland. U.S.A
Favell, D, J. (1998). Acomparison of the vitamin C content of fresh and frozen vegetables. Food chemistry 62, 59-64
Lee, Y., Howard, L. R; Villalon, B. (1995). Flavonoids and antioxidant activity of fresh (Capsicum annum) cultivars J.Food Sci. 60: 473-476

Download