The paste property of starch sodium dodecenylsuccinate and cornstarch was studied with Haake rotoviscometer and Brabender viscometer. The result showed that the thickening ability of starch sodium dodecenylsuccinate was better than that of corn starch. The emulsion stability of starch sodium dodecenylsuccinate was invcstigatcd by the mcthod of wcighting, comparcd with that of gum arabic and corn starch. The result indicated that the emulsion stability of starch sodium dodecenylsuccinate was better than that of corn starch and equal to that of gum arabic. The starch sodium dodecenylsuccinate and dextrin adding gum arabic was sued as the wall material in microencapsulation examination by the method of spray-drying. The result showed that the microencapsulation efficiency using starch sodium dodecenylsuccinate was better than that using dextrin adding gum arabic.%十二烯基酯化淀粉是一种优良的增稠和乳化剂.作者研究了其力学性质和乳化稳定性，并进行了微胶囊包埋实验，实验证明其包埋效果比传统的壁材更好.
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