Introduction to the nutritional characteristics of Chinese Yam

Chinese yam, also known as Huaishan, Huai yam, Huai yam, Dioscorea zingiberensis, Dioscorea opposita, etc., belongs to Dioscoreaceae, perennial vegetables. Chinese yam contains a lot of protein, various vitamins and beneficial trace elements and sugars. In addition, it also contains more medicinal health ingredients, such as mucopolysaccharide, allantoin, yam, choline, dopamine hydrochloride, etc., which are homologous foods with high nutritional value, such as invigorating the spleen, tonifying the lung, strengthening the kidney, tonifying essence and so on. In recent years, the results show that yam mucopolysaccharide has a certain pharmacological activity, it can stimulate or regulate the immune system, and can be used as a health food to enhance human immunity. The harvest season of yam tuber is relatively concentrated, and the storability of yam itself is poor, the longest can not be more than 120 days, and the nutrients are decomposed in the later stage of storage. In order to prolong the storage period and achieve balanced supply, it can be adjusted by means of deep processing. The existing processing methods of Chinese yam include drying, extracting medicinal ingredients from mucus, canning, making beverage, soy sauce and so on.