Influence of Laminarina Japonica polysaccharides on the intestinal mucosal secretary IgA in mice

To observe the influence of Laminarina Japonica Polysaccharides (LJPS) on intestinal immunity SIgA and intestineal flora in mice. The mice were fed LJPS at doses of 250, 500, 1000 μg/g. By ELISA kit, The effect of LJPS on intestinal immunity SIgA activity were evaluated in normal mice. By microbial cultivation, the number of intestinal flora were observed. LJPS 500, 1000 μg/g enhanced secretion of SIgA and the number of Lactobacillus in mice, and LJPS 1000 μg/g enhanced the number of Bifidobacterium. It showed that LJPS increased secretion of SIgA and regulated intestinal flora in mice.