The sprouting of Chinese yam can be eaten, only the nutrients will be lost.

The content of P is the highest, and the content of Fe, Zn, Cu, Co, Cr and other ions are also higher; Chen Yan et al. determined the content of 18 elements, including K, Na, Ca, Mg, Mn, Cu, Ni, Pb, Cr, Cd, etc., in Chinese yam and soil samples.

It was found that the content of K was the highest in Chinese yam, followed by P, Na, Mg, Ca, etc. The content of K, P and Na in Chinese yam was significantly higher than that in soil, which indicated that Chinese yam had an enrichment effect on these elements.

Expanded information:

Proteins and amino acids:

Martin and Thompson's results. Thompson's results showed that the crude protein content of yam was 8.19 % on average; Wang Fei et al. showed that fresh Chinese yam contained 3.59 % crude protein and 2.71 % total amino acids, of which the content of essential amino acids amounted to 1.05 %; Chen Yan et al. determined the compositions of various amino acids in Chinese yam by using an amino acid analyzer.

The results showed that there were threonine, valine, methionine, methionine and other amino acids in Huaiyama yam. valine, methionine, phenylalanine, ? Phenylalanine, ? isoleucine, leucine and lysine. Leucine and lysine, with a total amino acid mass fraction of 7.256%, of which 25.32% were essential amino acids.

This shows that yam is rich in protein and more kinds of amino acids, and the essential amino acids are complete, with high nutritional value.

Baidu Encyclopedia - Chinese yam