PROBLEM TO BE SOLVED: To provide a novel polysaccharide and a novel polysaccharide having an excellent hair-growing action.SOLUTION: A polysaccharide in which a sugar moiety as a basic structure of the polysaccharide is constituted of at least galactose and mannose, and the galactoses include a furanose type galactose, is disclosed. In the above described polysaccharide, an extracellular polysaccharide derived from Parachlorella is disclosed. There are disclosed a hair matrix cell growth activator, an FGF-7 production accelerator, a VEGF production accelerator, a hair tonic, a melanogenesis inhibitor, a skin-whitening agent, and an external preparation for skin which contain: the polysaccharide in which the sugar moiety as the basic structure of the polysaccharide is constituted of at least galactose and mannose, and the galactoses include the furanose type galactose or the extracellular polysaccharide derived from Parachlorella. There is disclosed a process for producing the polysaccharide comprising: heterotrophically culturing a Parachlorella unicellular algae or a modified Parachlorella unicellular algae in a carbon source-containing culture medium under an aerobic condition and collecting the polysaccharide produced.COPYRIGHT: (C)2014,JPO&INPIT【課題】 本発明は、新規多糖体及び優れた育毛作用のある新規多糖体を提供する。【解決手段】 多糖の基本構造の糖残基が少なくともガラクトースとマンノースで構成されており、当該ガラクトースにフラノース型が存在する多糖体又はパラクロレラ由来の細胞外多糖体;多糖の基本構造の糖残基が少なくともガラクトースとマンノースで構成されており、当該ガラクトースにフラノース型が存在する多糖体又はパラクロレラ由来の細胞外多糖体を含有する毛母細胞増殖賦活剤、FGF-7産生促進剤、VEGF産生促進剤、育毛剤、メラニン産生抑制剤、美白剤、皮膚外用剤;パラクロレラ属単細胞藻類又は改変体を炭素源含有培養培地で好気的な条件下で従属培養し、生産される多糖体を回収する多糖体の製造方法。【選択図】なし
