Correia Roberta, Grace Mary H, Esposito Debora, Lila Mary Ann
Laboratory of Food Bioactive Compounds, Chemical Engineering Department, Federal University of Rio Grande do Norte (UFRN), Campus Central, s/n, Natal, RN 59078-970, Brazil; Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, 600 Laureate Way, Kannapolis, NC 28081, United States.
Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, 600 Laureate Way, Kannapolis, NC 28081, United States.
Food Chem. 2017 Nov 15;235:76-85. doi: 10.1016/j.foodchem.2017.05.042. Epub 2017 May 10.
Particulate colloidal aggregate food ingredients were prepared by complexing wheat flour, chickpea flour, coconut flour and soy protein isolate with aqueous wild blueberry pomace extracts, then spray drying, freeze drying, or vacuum oven drying to prepare dry, flour-like matrices. Physico-chemical attributes, phytochemical content and stability during storage were compared. Eighteen anthocyanins peaks were identified for samples. Spray dried matrices produced with soy protein isolate had the highest concentration of polyphenols (156.2mg GAE/g) and anthocyanins (13.4mg/g) and the most potent DPPH scavenging activity (714.1μmolesTE/g). Spray dried blueberry polyphenols complexed with protein were protected from degradation during 16weeks at 4°C and 20°C. Soy protein isolate more efficiently captured and stabilized wild blueberry pomace phytochemicals than other protein sources. Overall, spray drying the blueberry extracts complexed with protein proved to be an environment-friendly strategy to produce stable functional ingredients with multiple applications for the food industry.
通过将小麦粉、鹰嘴豆粉、椰子粉和大豆分离蛋白与野生蓝莓果渣水提取物络合，制备颗粒状胶体聚集物食品成分，然后进行喷雾干燥、冷冻干燥或真空烘箱干燥，以制备干燥的、面粉状基质。比较了其物理化学特性、植物化学物质含量和储存期间的稳定性。样品中鉴定出18个花青素峰。用大豆分离蛋白制备的喷雾干燥基质具有最高浓度的多酚（156.2mg GAE/g）和花青素（13.4mg/g）以及最强的DPPH清除活性（714.1μmoles TE/g）。与蛋白质络合的喷雾干燥蓝莓多酚在4°C和20°C下16周内可防止降解。大豆分离蛋白比其他蛋白质来源更有效地捕获和稳定野生蓝莓果渣植物化学物质。总体而言，对与蛋白质络合的蓝莓提取物进行喷雾干燥被证明是一种环境友好的策略，可生产出具有多种应用的稳定功能性成分，用于食品工业。
