Corrêa-Filho Luiz C, Santos Diana I, Brito Luísa, Moldão-Martins Margarida, Alves Vítor D
LEAF-Linking Landscape, Environment, Agriculture and Food, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal.
Bioengineering (Basel). 2022 Jul 13;9(7):311. doi: 10.3390/bioengineering9070311.
Tomato pomace is rich in carotenoids (mainly lycopene), which are related to important bioactive properties. In general, carotenoids are known to react easily under environmental conditions, which may create a barrier in producing stable functional components for food. This work intended to evaluate the storage stability and in vitro release of lycopene from encapsulated tomato pomace extract, and its bioaccessibility when encapsulates were incorporated in yogurt. Microencapsulation assays were carried out with tomato pomace extract as the core material and arabic gum or inulin (10 and 20 wt%) as wall materials by spray drying (160 and 200 °C). The storage stability results indicate that lycopene degradation was highly influenced by the presence of oxygen and light, even when encapsulated. In vitro release studies revealed that 63% of encapsulated lycopene was released from the arabic gum particles in simulated gastric fluid, whereas for the inulin particles, the release was only around 13%. The feed composition with 20% inulin showed the best protective ability and the one that enabled releasing the bioactives preferentially in the intestine. The bioaccessibility of the microencapsulated lycopene added to yogurt increased during simulated gastrointestinal digestion as compared to the microencapsulated lycopene alone. We anticipate a high potential for the inulin microparticles containing lycopene to be used in functional food formulations.
番茄渣富含类胡萝卜素（主要是番茄红素），这些类胡萝卜素具有重要的生物活性特性。一般来说，已知类胡萝卜素在环境条件下容易发生反应，这可能会给生产稳定的食品功能成分带来障碍。这项工作旨在评估包封番茄渣提取物中番茄红素的储存稳定性、体外释放情况，以及将包封物添加到酸奶中时其生物可及性。以番茄渣提取物为核心材料，阿拉伯胶或菊粉（10%和20%重量）为壁材，通过喷雾干燥（160℃和200℃）进行微胶囊化试验。储存稳定性结果表明，即使在包封状态下，番茄红素的降解也受到氧气和光照的高度影响。体外释放研究表明，在模拟胃液中，63%的包封番茄红素从阿拉伯胶颗粒中释放出来，而对于菊粉颗粒，释放率仅约为13%。含有20%菊粉的饲料组合物显示出最佳的保护能力，并且能够使生物活性物质优先在肠道中释放。与单独的微胶囊化番茄红素相比，添加到酸奶中的微胶囊化番茄红素在模拟胃肠消化过程中的生物可及性增加。我们预计含番茄红素的菊粉微粒在功能性食品配方中有很大的应用潜力。
