A lotus placenta extract includes polysaccharides, phenolics and flavonoids, with the phenolics and the flavonoids contained in the polysaccharides. The polysaccharides are extracted from a lotus placenta by ultrasound. The polysaccharides have functions of scavenging DPPH radical, ferrous ion chelating activity, superoxide scavenging activity, reducing capacity, tyrosinase activity inhibition and water hydration capacity.一種蓮花胎座之萃取物包含一物理性萃取多醣體、一多酚及一類黃酮素。該物理性萃取多醣體利用物理性萃取方式萃取自一蓮花胎座體。該多酚及類黃酮素包含於該物理性萃取多醣體。該物理性萃取多醣體具有清除DPPH自由基能力、亞鐵離子螯合能力、清除超氧陰離子能力、還原力、抑制酪胺酸酶活性及保水能力。
