Faculdade de Farmácia, Universidade Federal da Bahia, Rua Barão de Geremoabo, s/n, Ondina, CEP 40171-970, Salvador, Bahia, Brazil.
J Agric Food Chem. 2011 Mar 23;59(6):2248-54. doi: 10.1021/jf1040405. Epub 2011 Mar 1.
The objective of this study was to investigate the feasibility of incorporating mango and acerola pulps into a biodegradable matrix as a source of polyphenols, carotenoids, and other antioxidant compounds. We also sought to evaluate the efficacy of mango and acerola pulps as antioxidants in film-forming dispersions using a response surface methodology design experiment. The bio-based films were used to pack palm oil (maintained for 45 days of storage) under accelerated oxidation conditions (63% relative humidity and 30 °C) to simulate a storage experiment. The total carotenoid, total polyphenol, and vitamin C contents of films were evaluated, while the total carotenoid, peroxide index, conjugated diene, and hexanal content of the packaged product (palm oil) were also monitored. The same analysis also evaluated palm oil packed in films without antioxidant additives (C1), palm oil packed in low-density polyethylene films (C2), and palm oil with no package (C3) as a control. Although the film-forming procedure affected the antioxidant compounds, the results indicated that antioxidants were effective additives for protecting the packaged product. A lower peroxide index (36.12%), which was significantly different from that of the control (p<0.05), was detected in products packed in film formulations containing high concentration of additives. However, it was found that the high content of vitamin C in acerola pulp acted as a prooxidant agent, which suggests that the use of rich vitamin C pulps should be avoided as additives for films.
本研究旨在探讨将芒果和 Acerola 果肉纳入可生物降解基质中作为多酚、类胡萝卜素和其他抗氧化化合物来源的可行性。我们还寻求使用响应面方法设计实验评估芒果和 Acerola 果肉作为成膜分散体中抗氧化剂的功效。使用生物基薄膜包装棕榈油（在 45 天的储存期内保持），在加速氧化条件下（相对湿度 63%和 30°C）模拟储存实验。评估了薄膜中的总类胡萝卜素、总多酚和维生素 C 含量，同时监测了包装产品（棕榈油）中的总类胡萝卜素、过氧化物指数、共轭二烯和己醛含量。同样的分析还评估了不含抗氧化添加剂的薄膜包装的棕榈油（C1）、低密度聚乙烯薄膜包装的棕榈油（C2）和无包装的棕榈油（C3）作为对照。尽管成膜过程会影响抗氧化化合物，但结果表明抗氧化剂是保护包装产品的有效添加剂。在含有高浓度添加剂的薄膜配方中包装的产品中，检测到较低的过氧化物指数（36.12%），与对照（p<0.05）显著不同。然而，发现 Acerola 果肉中的高维生素 C 含量充当了促氧化剂，这表明应避免将富含维生素 C 的果肉用作薄膜添加剂。
