With the Indica cultivar of Yangdao 4 and Japonica/Indica hybrid combination of Ce 03/Yangdao 4 as materials, carbon remobilization and change in the activities of starch hydrolytic enzymes in rice stems were investigated when they were subjected to water stress during grain filling.

When rape seeds germinate, the long lived mRNA translate amylase and protease, but could not translate Na + K + ATPase.

Three genes encoding amylase from Bacillus firmus 725 were cloned and expressed in E coli using pUC18 as vector, to give recombinant plasmids pBA135, pBA140 and pBA150.

The α 1,4 glycoside linkage of the inclusion compound of cholesterol and β cyclodextrin could be hydrolyzed by mould amylase and the best conditions for mould amylase to hydrolyze the inclusion compound of cholesterol and β cyclodextrin were studied and the results were the substrate concentration 15% , pH5.

Research of alpha amylase hydrolyzed wheat germ protein to product wheat germ protein;