山药,又名薯芋、参薯、田薯、大薯、白苕、麻山药,名称较多,各地叫法不一。原产于我国南方山地,目前我国大部分地区均有分布,主要产于河南、山西、河北、陕西等省,以河南生产的山药最佳。山药根部肥大,为长棒形、球形和块形,皮为白色、紫白色或浅紫色,皮薄肉厚,含丰富淀粉,为食用部分。山药的营养价值,除含有丰富的淀粉外,还有蛋白质、维生素、各种矿物质,以及胆碱、淀 Yam, also known as potato taro, sweet potato, potato, big potato, Baiji, Ma yam, more names, all over the different names. Originated in China’s southern mountainous areas, at present, most parts of our country are distributed, mainly produced in Henan, Shanxi, Hebei, Shaanxi and other provinces, Henan yam to produce the best. Yam root hypertrophy, long stick, spherical and block, the skin is white, purple or light purple, thin fleshy, rich in starch for the edible part. The nutritional value of yam, in addition to rich in starch, but also protein, vitamins, minerals, as well as choline,