Rosa Fernanda R, Arruda Andréa F, Siqueira Egle M A, Arruda Sandra F
Faculty of Medicine, Campus Umuarama, Universidade Federal de Uberlândia, 38.400-902 Uberlândia, MG, Brazil.
Chemistry Institute, Campus Samambaia, Universidade Federal de Goiás, 74.690-900 Goiânia, GO, Brazil.
Nutrients. 2016 Feb 23;8(3):110. doi: 10.3390/nu8030110.
This study identified major phenolic compounds of the tucum-do-cerrado (Bactris setosa) peel, as well as antioxidant activity and total phytochemical compound concentration of different extracts of the peel and pulp of this fruit. Phenolic compounds of the different extracts of tucum-do-cerrado peel were identified and quantified using a high-performance liquid chromatography system coupled to a diode array detector (DAD). Total phytochemical compound content was determined by spectrophotometric assays and the antioxidant activity by ferric reducing antioxidant power and β-carotene/linoleic assays. Total phenolic, flavanols, total anthocyanins and yellow flavonoids concentration of tucum-do-cerrado were 122-, 14-, 264- and 61-fold higher in the peel than in the pulp, respectively. The aqueous, methanolic and ethanolic extracts of the tucum-do-cerrado peel exhibited higher antioxidant activity compared to its pulp. Flavanols, anthocyanins, flavones, phenolic acids and stilbenes were the main phenolic classes identified in the tucum-do-cerrado peel extracts. Results suggest that the antioxidant capacity and the phytochemical compound content of the tucum-do-cerrado are mainly associated with the peel. Although flavonoids are the main compounds identified in tucum-do-cerrado peel, other phenolics identified in minor amounts, such as phenolic acids and stilbenes, may be responsible for the high antioxidant capacity of the fruit.
本研究鉴定了图昆杜塞拉多（Bactris setosa）果皮中的主要酚类化合物，以及该水果果皮和果肉不同提取物的抗氧化活性和总植物化学化合物浓度。使用配备二极管阵列检测器（DAD）的高效液相色谱系统对图昆杜塞拉多果皮不同提取物中的酚类化合物进行鉴定和定量。通过分光光度法测定总植物化学化合物含量，并通过铁还原抗氧化能力和β-胡萝卜素/亚油酸法测定抗氧化活性。图昆杜塞拉多的总酚、黄烷醇、总花青素和黄色黄酮类化合物浓度在果皮中的含量分别比果肉高122倍、14倍、264倍和61倍。图昆杜塞拉多果皮的水提取物、甲醇提取物和乙醇提取物的抗氧化活性高于其果肉。黄烷醇、花青素、黄酮、酚酸和芪类是在图昆杜塞拉多果皮提取物中鉴定出的主要酚类类别。结果表明，图昆杜塞拉多的抗氧化能力和植物化学化合物含量主要与果皮有关。虽然黄酮类化合物是图昆杜塞拉多果皮中鉴定出的主要化合物，但其他少量鉴定出的酚类物质，如酚酸和芪类，可能是该水果具有高抗氧化能力的原因。
