Li Jiaoyong, Yang Zongyuan, Zhang Yufan, Gao Boyan, Niu Yuge, Lucy Yu Liangli
Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
Food Chem. 2022 Jul 15;382:132333. doi: 10.1016/j.foodchem.2022.132333. Epub 2022 Feb 3.
The tomato pomace, a by-product of tomato processing, was rich in nutrients such as lycopene (Lyc), vitamins, phenols and soluble dietary fibers (SDF). Homogenization combined with enzymatic hydrolysis (HE) was firstly applied to obtain HE-pomace. The yield of Lyc was raised by 57.2% after HE treatment by the optimal condition. The extraction rate of HE-SDF was increased by 73.4%. In order to clarify the relationship between the SDF and the release of Lyc, SDFs were characterized by structural analysis and morphological determination. The results suggested that HE-SDF possessed smaller molecular weight and loose microstructure with shorter chains. It implied that the degradation of dietary fiber led to the release of Lyc molecules. Besides, HE-SDF exhibited stronger capacity of water-holding, glucose adsorption and bile acid binding. In conclusion, HE treatment possessed the potential to be applied as an excellent modification method, which improved the nutritional and economic value of tomato pomace.
番茄渣是番茄加工的副产品，富含番茄红素（Lyc）、维生素、酚类和可溶性膳食纤维（SDF）等营养成分。首先采用均质化结合酶水解（HE）的方法获得HE处理后的番茄渣。在最佳条件下进行HE处理后，Lyc的产量提高了57.2%。HE-SDF的提取率提高了73.4%。为了阐明SDF与Lyc释放之间的关系，通过结构分析和形态测定对SDF进行了表征。结果表明，HE-SDF具有较小的分子量和较短链的松散微观结构。这意味着膳食纤维的降解导致了Lyc分子的释放。此外，HE-SDF表现出更强的持水能力、葡萄糖吸附能力和胆汁酸结合能力。总之，HE处理有潜力作为一种优异的改性方法应用，提高了番茄渣的营养和经济价值。
