Alfalfais usually used to feedlivestock,researchin recent years indicated that alfalfa stemandleaf contains over 50 nutrients and unknown growth factors ; nutritional elements are richer than otherplants.Its plants contain plant protein,food fiber ,saponine ,generic flavone ,phenolic acid etc., whichare bio-active compositionand have medical value ;it makes theindustrial exploitationand utilization of thebio-active composition of alfalfa become the hot-spot.The research progress in several types of bio-acti...