A Study on the Detection Indexes of Flammulina velutipes Liquid Strains during the Culture Process

During the culture process of Flammulina velutipes liquid strains, the variation of mycelial pellet numbers, pH, the contents of reducing sugar and amino nitrogen and the enzyme activity was studied. The results showed that the numbers and activity of mycelial pellets were related to those indexes, and that the quality of the liquid strain was the best when the contents of reducing sugar and amino nitrogen were 3.40g/100mL and 11.10mg/100mL resp. and the activities of cellulase, laccase and proteinase were 1.10U,0.017U and 0.17U resp..