Compostos fenólicos totais e atividade antioxidante da semente de abobora (Cucurbita moschata, L.)

Abstract

The pumpkin (Cucurbita moschata, L.) is a vegetable of the family Cucurbitaceae. Pumpkin seeds are pumpkin pieces which are usually discarded by consumers, but which exhibit properties which are capable of providing health benefits. The objective was to quantify the total phenolic content of pumpkin seeds extracts and evaluate the antioxidant capacity in vitro by radical capture reduction methods DPPH (2,2-

diphenyl-1-1picril-hydrazyl) and ABTS+

(2,2-azino-bis (3-etilbenzotiazolin) -6-sulfonic acid) compared to the extracts. The study of the antioxidant potential and the total phenolic content was performed with aqueous extract, alcohol and acetone. The results showed a good amount of total phenolic 82.48 mg GAE / 100g for the alcoholic extract and 102.36 mg GAE / 100g in pumpkin seed for the acetone extract. The results showed a good amount of total phenolic 82.48 mg GAE / 100g for the alcoholic extract and 102.36 mg GAE / 100g in pumpkin seed for the acetone extract. The antioxidant capacity by DPPH method showed values of 1.67 and 1.40 mM / g Trolox Equivalent to the alcoholic extracts and acetone, respectively. Already by the ABTS+ method + had the TEAC values of 21.47, 22.16 and 19.56 mM / g Trolox equivalent to the alcohol extracts, acetone and aqueous respectively. The results indicate that there is a significant amount of total phenolics and antioxidant activity despite having lower values when compared with other seeds