In order to improve the utilization of tea polyphenols in oil systems, tea polyphenol microcapsules were prepared by using sodium starch octenyl succinate as wall material and spray drying method. The morphology, particle size distribution, solubility and thermal stability of tea polyphenol microcapsules were analyzed.The tea polyphenol microcapsules were added in soybean oil, and the shelf life of the oil was predicted by measuring the total oxidation value in the accelerated oxidation process. The results showed that the particle size distribution of the tea polyphenol microcapsules was uniform, the spherical surface was concave, and the thermal stability was good. At 25 ℃, the shelf life of the soybean oil with 200 mg/kg tea polyphenol microcapsules could be up to 249.89 d, which was 79 d longer than that of soybean oil without tea polyphenol microcapsules. |