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目的确定长双歧杆菌脂磷壁酸的最佳提取工艺及其免疫调节作用。方法通过对不同方法提取长双歧杆菌脂磷壁酸含量的测定及对昆明小鼠免疫球蛋白含量和T细胞、B细胞的增殖检测来探讨长双歧杆菌脂磷壁酸对小鼠细胞免疫的调节作用。结果采用10%TCA水浴(38℃、3 h)提取脂磷壁酸效果最好,LTA对体液免疫有一定的刺激作用,并且能够促进T细胞和B细胞的增殖。结论长双歧杆菌LTA具有免疫功能。
Objective To determine the optimal extraction process and immunomodulatory effect of lipoteichoic acid from Bifidobacterium longum. Methods The lipoteichoic acid content of Bifidobacterium longum was determined by different methods and the immunoglobulin content and the proliferation of T cells and B cells in Kunming mice The regulatory role. Results Lipoteichoic acid was best extracted with 10% TCA water bath (38 ℃, 3 h). LTA stimulated humoral immunity and promoted the proliferation of T cells and B cells. Conclusion Long Bifidobacterium LTA has immune function.