Paz Mário, Gúllon Patricia, Barroso M Fátima, Carvalho Ana P, Domingues Valentina F, Gomes Ana M, Becker Helena, Longhinotti Elisane, Delerue-Matos Cristina
REQUIMTE, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal; Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, s/n, 60455-760 Fortaleza, Ceará, Brazil.
Center for Biotechnology and Fine Chemistry (CBQF), Portuguese Catholic University, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal.
Food Chem. 2015 Apr 1;172:462-8. doi: 10.1016/j.foodchem.2014.09.102. Epub 2014 Sep 28.
Eight tropical fruit pulps from Brazil were simultaneously characterised in terms of their antioxidant and antimicrobial properties. Antioxidant activity was screened by DPPH radical scavenging activity (126-3987 mg TE/100g DW) and ferric reduction activity power (368-20819 mg AAE/100g DW), and complemented with total phenolic content (329-12466 mg GAE/100g DW) and total flavonoid content measurements (46-672 mg EE /100g DW), whereas antimicrobial activity was tested against the most frequently found food pathogens. Acerola and açaí presented the highest values for the antioxidant-related measurements. Direct correlations between these measurements could be observed for some of the fruits. Tamarind exhibited the broadest antimicrobial potential, having revealed growth inhibition of Pseudomonas aeruginosa. Escherichia coli, Listeria monocytogenes, Salmonella sp. and Staphylococcus aureus. Açaí and tamarind extracts presented an inverse relationship between antibacterial and antioxidant activities, and therefore, the antibacterial activity cannot be attributed (only) to phenolic compounds.
对来自巴西的八种热带水果果肉的抗氧化和抗菌特性进行了同步表征。通过DPPH自由基清除活性（126 - 3987毫克TE/100克干重）和铁还原抗氧化能力（368 - 20819毫克AAE/100克干重）筛选抗氧化活性，并辅以总酚含量（329 - 12466毫克GAE/100克干重）和总黄酮含量测定（46 - 672毫克EE /100克干重），而抗菌活性则针对最常见的食源性病原体进行测试。针叶樱桃和阿萨伊果肉在与抗氧化相关的测量中呈现出最高值。在某些水果中可以观察到这些测量值之间的直接相关性。罗望子表现出最广泛的抗菌潜力，对铜绿假单胞菌、大肠杆菌、单核细胞增生李斯特菌、沙门氏菌属和金黄色葡萄球菌均有生长抑制作用。阿萨伊果肉提取物和罗望子提取物在抗菌和抗氧化活性之间呈现出反比关系，因此，抗菌活性不能（仅）归因于酚类化合物。
