A Comparative Study on Nutritional Compositions of Lentinula edodes in Four Main Producing Regions in China
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Abstract:
To examine the differences in the nutritional composition of Lentinula edodes collected from four main producing regions, including Shiyan in Hubei, Suizhou in Hubei, Lishui in Zhejiang, and Xixia in Henan, in China, the levels of nutritional components, such as proteins, polysaccharides, fats, minerals, ergosterol, and amino acids, in L. edodes were evaluated. The results revealed that the contents of crude proteins, crude polysaccharides, and crude fat in L. edodes of different origins vary. More specifically, the crude protein content in L. edodes from Xixia and the polysaccharide content in L. edodes from Shiyan are the highest. Meanwhile, the levels of potassium, sodium, alcium, and zinc in L. edodes from Xixia are the highest, corresponding to 21773.3, 68.01, 122.09, and 81.52 mg/kg, respectively. The highest ergosterol level of 5.78 mg/g was noted in L. edodes from Shiyan. Amino acid analysis results revealed that L. edodes collected from the four main producing areas possess abundant amount of essential amino acids, and they resemble the WHO/FAO protein standard. Particularly, the contents of glutamic acid and aspartic acid are the highest. Furthermore, L. edodes from Shiyan exhibited the highest polysaccharide content, while L. edodes from Xixia exhibited the optimal amino acid composition. These results suggest that L. edodes from the four regions contain various nutrients, and thus, they are of high nutritional value. These findings will enable further application and research on L. edodes.
