Lima Priscilla M, Dacanal Gustavo C, Pinho Lorena Silva, Pérez-Córdoba Luis Jaime, Thomazini Marcelo, Moraes Izabel Cristina Freitas, Favaro-Trindade Carmen S
Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Av. Duque de Caxias Norte, 225, CEP 13635-900 Pirassununga, São Paulo, Brazil.
Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Av. Duque de Caxias Norte, 225, CEP 13635-900 Pirassununga, São Paulo, Brazil.
Food Res Int. 2021 Oct;148:110627. doi: 10.1016/j.foodres.2021.110627. Epub 2021 Jul 22.
Peels and seeds are byproducts generated during the processing of fruits and vegetables that have been cut off or rejected in the food industry. Pumpkin peels are an example of products that provide valuable nutritional aspects but that have low commercial value. This work aimed at recovering carotenoids from pumpkin peels to produce valuable powders. The pumpkin peel flour was obtained from convective drying and milling processes. Liquid-solid extraction produced the ethanol raw extract with a high carotenoid content. Carotenoid extract and Arabic gum suspensions were mixed in proportions of 1:2, 1:3, or 1:4 w/w. Emulsions produced via Ultra-Turrax (UT) and Ultra-Turrax plus high pressure (UTHP) were evaluated and spray dried. The particles carotenoid concentrations varied from 159.1 to 304.6 µg/g and from 104.3 to 346.2 µg/g for samples primarily produced via UT and UTHP, respectively. UTHP 1:3 particles showed the lowest degradation of carotenoids during 90 days of storage, with a retention index of 79%. The homogenization and spray drying techniques were proven to be suitable steps to preserve the carotenoids recovered from the byproduct studied. Microparticles can be used as a natural dye with potential use in food, pharmaceuticals, and cosmetics.
果皮和种子是水果和蔬菜加工过程中产生的副产品，在食品工业中已被切除或废弃。南瓜皮就是这样一种产品，它具有重要的营养成分，但商业价值较低。这项工作旨在从南瓜皮中提取类胡萝卜素，以生产有价值的粉末。南瓜皮粉是通过对流干燥和研磨工艺获得的。液固萃取产生了类胡萝卜素含量高的乙醇粗提物。类胡萝卜素提取物和阿拉伯胶悬浮液按1:2、1:3或1:4 w/w的比例混合。对通过超高速均质机（UT）和超高速均质机加高压（UTHP）产生的乳液进行了评估并进行喷雾干燥。对于主要通过UT和UTHP生产的样品，颗粒类胡萝卜素浓度分别在159.1至304.6 μg/g和104.3至346.2 μg/g之间变化。UTHP 1:3颗粒在储存90天期间类胡萝卜素降解最低，保留指数为79%。事实证明，均质化和喷雾干燥技术是保存从所研究的副产品中回收的类胡萝卜素的合适步骤。微粒可用作天然染料，在食品、制药和化妆品中有潜在用途。
