Determination of soluble sugars from Pleurotus eryngii,Lentinula edodes and their blanching liquid by GC- MS

Edible Fungus are very popular because of rich nutrition and delicious taste.It will produce a great deal of blanching liquid in the process of canned mushroom.The liquid contains protein,amino acid,soluble sugars and so on.Pleurotus eryngii,Lentinula edodes and their blanching water were detected by gas chromatography- mass spectrometry( GC- MS).The results showed that Edible Fungus and their blanching water contained same soluble sugars: Pleurotus eryngii and its blanching water contained more mannitol and D- arabitol,excluding D- trehalose;while Lentinula edodes and its blanching water contained mannitol,D- trehalose and D- arabitol. After blanching,mannitol and D- arabitol in Pleurotus eryngii lost 55.4% and 25.2%,and in Lentinula edodes,the rates of mannitol,D- trehalose and D- arabitol were respectively 20.0%,96.5% and 72.0%.