Antioxidants and health-beneficial nutrients in fruits of eighteen Cucurbita cultivars. - GreenMedInfo Summary
Antioxidants and Health-Beneficial Nutrients in Fruits of EighteenCultivars: Analysis of Diversity and Dietary Implications.
Molecules. 2020 Apr 14 ;25(8). Epub 2020 Apr 14. PMID: 32295156
Aging is accompanied by gradual accumulation of molecular damage within cells in response to oxidative stress resulting from adverse environmental factors, inappropriate lifestyle, and numerous diseases. Adequate antioxidant intake is a key factor of proper diet. The study aimed to assess the antioxidant/antiradical capacities offruits (18 cultivars of the species:Duch.,Duch.,L., andBouché) grown in central Europe. The analyses were based on the FRAP (ferric reducing antioxidant power), CUPRAC (cupric ion reducing antioxidant capacity), and DPPH (2,2-diphenyl-1-picrylhydrazyl radical) assays. The content of phenolic compounds and β-carotene was evaluated with HPLC (high performance liquid chromatography), while the main macro- and micronutrients by ICP-OES (inductively coupled plasma mass spectrometry). The results revealed high intraspecies variability within thegenus. The Japanese 'Kogigu' fruits were distinguished as extraordinary sources of phenolic compounds, including syringic and protocatechuic acids, catechin, and kaempferol. Another popular cultivar 'Hokkaido' exhibited the highest antioxidant and antiradical capacities. Most of the fruits proved to be rich sources of zinc and copper. The obtained data are discussed in the context of optimized nutrition of the elderly and suggest thatfruits should become daily components of their diet.