Abstract: This article discussed the reaction systems employed in ester production catalyzed by lipase.The enzymatic reaction system was a consequence of certain structure patterns of lipases.Water could directly affect the hydration of the enzyme or indirectly change the natrue of the reaction media and/or enzyme support materials.The media and enzyme support material often interacted with other factors affecting the reaction.Several methods of water removal and their effectiveness in lipase－ catalyzed reaction were discussed.There was a recent surge of interest in modifying lipase systems with surfactants.

Key words:  , Lipase Surfactant Interfactial activation Esterification；