Grumixama (Eugenia brasiliensis Lam.) cultivated in the Cerrado has high content of bioactive compounds and great antioxidant potential

ABSTRACT: Grumixama (Eugenia brasiliensis Lam.) is a Brazilian berry native to the Atlantic Rainforest. Information on nutritional and bioactive profiles of the fruit cultivated in the Brazilian Savannah (Cerrado) is not available in literature. The aim of this study was to investigate the physical and proximate composition; mineral, total phenolics, total tannins and total carotenoids contents; and antioxidant capacity (DPPH and FRAP assays) of the dark purple grumixama cultivated in the Cerrado area (Goiás State). Results showed a similar physical and proximate composition to those of grumixama native to the Atlantic Rainforest. However, grumixama from Cerrado presented the highest dietary fiber and magnesium contents. In addition, the Cerrado grumixama showed higher content of total phenolics (with a large amount of tannins), carotenoids and antioxidant capacity than those of grumixama native to the Atlantic Rainforest, cherry, blueberry, and fruits native to the Cerrado. Thus, the consumption of whole fruit (peel, pulp and seed) in healthy diets and its use as an ingredient for functional food products should be encouraged.

摘要：巴西红果仔（Grumixama，学名：Eugenia brasiliensis Lam.）是一种原产于大西洋雨林的巴西浆果。目前学界尚未有关于巴西塞拉多（Cerrado）稀树草原种植的该果实营养及生物活性成分谱的公开研究报道。本研究旨在探究在塞拉多地区（戈亚斯州）种植的深紫色巴西红果仔的物理特性与常规营养组成、矿物质含量、总酚类、总单宁及总类胡萝卜素含量，以及其抗氧化能力（采用DPPH与FRAP实验法测定）。结果表明，该果实的物理特性与常规营养组成与大西洋雨林原生的巴西红果仔基本一致，但塞拉多种植的巴西红果仔的膳食纤维与镁元素含量显著更高。此外，相较于大西洋雨林原生巴西红果仔、樱桃、蓝莓以及塞拉多本土果实，塞拉多种植的巴西红果仔拥有更高的总酚类（其中单宁含量可观）、类胡萝卜素与抗氧化能力。因此，应倡导在健康膳食中食用完整的巴西红果仔果实（果皮、果肉与果籽），并将其作为功能性食品的原料加以推广应用。