Bioactive compounds, bromatological and mineral characterization of blackberries in a subtropical region

ABSTRACT Given the above, the objective of this study was to evaluate the bromatological, mineral and bioactive compounds of blackberry grown in a subtropical region. Blackberries fruits (Rubus sp.), Grown in an orchard of Unioeste, Campus Marechal Cândido Rondon (Paraná, Brazil), were used. Immediately after harvest, the fruits were taken to the Food Technology Laboratory for chemical analysis and bioactive compounds. The fruit samples for the analysis of reducing, bromatological and mineral sugars were frozen and sent to private laboratories. Hybrids are more perishable than cultivars. There is variation in color among the cultivars and hybrids studied. Hybrids and cultivars of black mulberry have a high content of ascorbic acid and fibers, with emphasis on the cultivar Tupy (75.0 mg 100 mL-1 and 7.23, respectively). Higher pH is verified in the cultivars Tupy and Arapaho (3.22 and 3.24, respectively). The Arapaho cultivar has fewer acid fruits (0.25 g 100 g-1), SS/total acidity ratio (36.88) and reducing sugar content (8.28 g 100g-1). Blackberry fruits are a rich source of bioactive compounds, such as cv. Chickasaw obtaining a higher content of total phenolic compounds (1368.84 mg EAG100mL-1) and the Boysenberry hybrid a greater amount of anthocyanin (5.11mg Ci-3-Gly g -1). The Chickasaw cultivar has a higher lipid content (4.59). There is no difference in moisture content, dry biomass and fruit firmness.

摘要：鉴于上述研究背景，本研究旨在评估亚热带地区种植的黑莓的常规营养成分、矿物质及生物活性化合物含量。本研究采用巴西巴拉那州马谢卡尔·坎迪多·隆东校区Unioeste果园种植的黑莓果实（Rubus sp.）。果实采收后即刻被移送至食品技术实验室，开展化学分析与生物活性化合物检测；用于还原糖、常规营养成分及矿物质分析的果实样品经冷冻处理后，被送往私营实验室完成检测。黑莓杂交品种相较于栽培品种更易腐坏。本研究涉及的各栽培品种与杂交品种间存在果实色泽差异。黑莓的栽培品种与杂交品种均含有较高水平的抗坏血酸（ascorbic acid）与膳食纤维，其中‘图皮’（Tupy）栽培品种的表现尤为突出，二者含量分别为75.0 mg 100 mL⁻¹与7.23。‘图皮’与‘阿拉帕霍’（Arapaho）栽培品种的果实pH值更高，分别为3.22与3.24。‘阿拉帕霍’栽培品种的果实酸度更低（0.25 g 100 g⁻¹），可溶性固形物与总酸度比值为36.88，还原糖含量为8.28 g 100 g⁻¹。黑莓果实是生物活性化合物的优质来源：‘奇卡索’（Chickasaw）栽培品种的总酚类化合物含量更高，达1368.84 mg EAG 100 mL⁻¹；而‘博森伯里’（Boysenberry）杂交品种的花青素（anthocyanin）含量更高，为5.11 mg Ci-3-Gly g⁻¹。‘奇卡索’栽培品种的脂质含量更高，为4.59。不同品种的黑莓果实在水分含量、干物质质量与果实硬度方面无显著差异。