Nutrient Composition Analysis and Polysaccharide Extraction of Tricholoma matsutake From Linzhi Area

The nutrient composition of Tricholoma matsutake fruit body from 5 sites of Linzhi area was measured.The moisture,crude protein,crude lipid,crude fiber,crude polysaccharide,amino acids,ash,Vc and trace element,and the optimize extraction conditions of polysaccharide were determined with orthogonal testing.The results indicated that the average content of every composition was 89.45%,12.02%,7.74%,7.84%,9.53%,8.67%,5.76% and 50.46(mg·100g-1),respectively.Among trace elements,the content of potassium and phosphor were highest,and reached to 2406.3 mg·100g-1 and 527.8 mg·100g-1,respectilvely.The content of zinc was higher than normal eatable fungi fruit body,reached to 56.48 mg·100g-1,and the content of calcium was lower than normal eatable fungi fruit body,only 43.56 mg·100g-1.Furthermore other functional composition,such as steroids was detected.The primary and secondary factors affecting the of poly saccharade polysaccharide exaction ere ethanol concentration(85%),solid/liquid ratio(1:10),temperature(800C),time(4h).Under these conditions,the highest yield of 8.98%% was obtained.