Abstract:

Fusion strain IV19C of Hypsizigus marmoreus and Pleurotus sajor-caju which had laccase activity was selected quickly by RB-PDA plate and molecular marker method on the basis of the difference of Hypsizigus marmoreus and Pleurotus sajor-caju laccase activity. The nutrition components and safety of fusion strain IV19C were analyzed and evaluated with GB (national standards methods) and other related methods. The results showed that fusion strain IV19C was different from Hypsizigus marmoreus and Pleurotus sajor-caju, and the water content of strain IV19C was 90.0% and there was no significant difference with Hypsizigus marmoreus and Pleurotus sajor-caju. However, the ash and crude protein content of strain IV19C were 9.81% and 36.0%, respectively. They were significantly higher than that of Pleurotus sajor-caju. The crude fiber and crude fat contents were 18.3% and 2.50%, respectively. They were higher than that of Hypsizigus marmoreus. Seven essential amino acids were contained. Glutamic acid and aspartic acid were rich but tryptophan was deficient. The fruit body of strain IV19C was safe to eat based on acute toxicity classification. IV19C was rich in nutrients, safe to eat, and had a good prospect.