1, yam polysaccharide: yam polysaccharide is the main effective component of yam. Yam polysaccharide has the effects of antioxidation, anti-aging, anti-mutation, anti-tumor, enhancing immunity and lowering blood sugar.

2. Taro polysaccharide: Taro contains water-soluble polysaccharide, mostly heteropolysaccharide. At present, there are few extraction methods of taro polysaccharide, mainly water extraction.

Second, the starch is different

1, yam starch: The content of resistant starch in yam starch is high, and it has strong acid hydrolysis resistance and enzymolysis resistance, which can hinder the hydrolysis of ordinary starch and delay its hydrolysis speed in the digestive tract, thus slowing down the postprandial blood sugar effect.

2. Taro starch: Taro is rich in starch, accounting for 9.6%-73.7%, but it is difficult to extract because of its fine starch particles and the surface is surrounded by mucopolysaccharides. At present, the main extraction methods of taro starch are water extraction, alkali extraction and enzyme-assisted extraction.

Third, the protein is different

1, yam protein: The glycoprotein contained in yam can stimulate immunity, promote macrophage activation, significantly inhibit the expression of inflammatory factors IL-4 and IL- 10, and at the same time increase the expression of interferon, thus playing a role in the body's inflammatory response.

2. Taro protein: Teng Wei et al. determined the protein content of 30 taro varieties, and finally the average content was 9.30%. It was concluded that the content of 18 amino acids was positively correlated with the content of protein, and 16 reached a significant level.

People's Network-Nutritional Value and Efficacy of Yam

Baidu encyclopedia-taro