ANTIOXIDANT ACTIVITY OF THE PULP, SKIN AND SEEDS OF THE NONI (Morinda citrifolia Linn)

作者：Costa Adriana Barbosa^*; Campos De Oliveira Adolfo Marcito; De Oliveira E Silva Ana Mara; Mancini Filho Jorge; De Lima Alessandro

来源：Revista Brasileira de Fruticultura, 2013, 35(2): 345-354.

• fruit
• bioactive compounds
• antioxidant activity

In an attempt to identify new sources of natural antioxidants and to clarify gaps in the scientific literature about the real beneficial properties attributed to Noni (Morinda citrifolia Linn), this study aimed to determine the chemical characterization and to evaluate antioxidant activity of the pulp, skin and seeds of Noni. Chemical composition (moisture, ash, protein, carbohydrates and lipids), bioactive compounds (total phenolics, total carotenoids and vitamin C), and the in vitro activity in aqueous, ethanolic and acetone extracts were determined. The results showed that compared to others fruits, the different parts of Noni have significant amounts of carbohydrates (27.21%, 9.70% and 8.37%) and protein (2.64%, 2.23 %, and 2.24 %) in seeds, skin and pulp, respectively. The pulp had a higher content of vitamin C (23.1 mg/100 g) and carotenoids (3.90 mg/100g). An amount of 109.81 mg/100 g of total phenolics was determined in the acetone extract of the pulp, followed by 76.01 and 28.75 mg/100g in the acetonic extracts of the skin and seeds, respectively and the ethanolic extract of the pulp with 20.33 mg/100g). All extracts showed antioxidant activity in vitro. The acetone and ethanolic extracts of the skin and seeds of Noni showed higher activity by the beta-carotene / linoleic acid method while the ethanolic pulp extract had a higher antioxidant activity by DPPH and ABTS assay and the acetone extract of the pulp by the ABTS method. Data showed that Noni has high content of phenolic compounds with antioxidant capacity in vitro in different parts of the fruit.

• 出版日期2013-6