This manuscript with Sarcon 180 KM mice as model animal to investigate the antitumor effect of crude polysaccharides from Caulerpa racemosa (CRP).

With their scavenging activity on hydroxyl radical as an index,the extraction technology of the water-soluble constituents in Caulerpa racemosa was studied by applying orthogonal experiment design,and their scavenging activity on hydroxyl radical was also investigated by using vitamin C as a positive group.

The chemical constituents and bioactivities of two economic seaweeds, Grateloupia turuturu Yamada and Caulerpa racemosa collected from South China Sea have been studied.

The green alga Caulerpa racemosa and the red alga Eucheuma striatum are economic seaweeds from South China Sea.

The immune modulatory effect of the Caulerpa racemosa var peltata polysaccharides on T lymphocyte subgroup and Natural killer cell in mice;

Effect of Potentilla anserine polysaccharide on proliferation of splenic lymphocytes and production of nitric oxide in mice;

Effect of Potentilla anserine polysaccharide on signal transduction related molecules in murine immunocytes;

Effect of Potentilla anserine polysaccharide on levels of IL-6,IFN-γ and TNF-α in murine serum;

The study was carried out to investigate thymus index, splenic index and the level of serum activity of lysozyme in mice treated with cyclophosphamide (Cy)(100mg/kg) in vivo by intraperitoneal injection at different Potentilla anserine polysaccharide (PAP) doses of 50 mg/kg,100 mg/kg ,200 mg/kg or 400 mg/kg.

Extraction of bracken polysaccharides and their effects on the growth of Bifidobacterium;