褐藻中活性物质研究概况

对近年来从褐藻中发现的有活性的多糖类、脂类、含氮类、萜类、甾醇类、类胡萝卜素、酶类、激素及其他活性物质进行综述。     

Enzyme-like activities of algal polysaccharide - cerium complexes

Water-soluble algal polysaccharides (APS) (alginic acid, fucoidan and laminaran) possess many pharmacological activities. The results of this study showed that the APS-Ce^4 complexes have some enzyme-like activities. Fucoidan and its complex with Ce^4 have activities similar to those of SOD. The activities of laminaran, alginic acid and their complexes are not measurable. The APS do not show measurable activities in the digestion of plasmid DNA. In contrast, the APS - Ce^4 complexes show these measurable activities under the comparable condition when APS bind Ce^4 and form homogenous solutions. The laminaran-Ce^4 complex shows the most obvious activity in the digestion of plasmid DNA, pNPP and chloropyrifos under neutral conditions.     

中国对虾病害防治新技术──口服多糖类免疫药物研制成功

随着对虾人工养殖企业化的发展，疾病特别是大规模暴发性流行疾病成了阻碍这一海洋水产养殖业发展的重要因素。如东南亚某些国家和地区以及台湾省，由于虾病的严重不得不转营其他养殖种类。因此，对虾病害的病因及防治成为我国乃至国际迫切需要解决的问题。早在80年代初，中科院海洋所以李光友研究员为主的课题组，面对方兴未艾的中国对虾养殖业，即以科学工作者应有的远见，提出如何提高养殖虾贝的品质，如何通过提高养殖生物自身抗病能力而达到预防病害的目的。正是基于这种认识，在国际上未见无脊椎动物免疫成功的情况下，确立从提高虾贝…