Thecapacityofvariouscarbohydrate ined(Fig1)﹒ LyophilizationofPKaseinabsenceof lossof enzymaticactivityuponrehydration ﹒ Additionoftrehalose,lactose,sucroseorHAtoPKasepriorto freeze‐dryingpreventedthelossofPKaseact ﹒ 13%,20%,15%。The α‐helixcontentofthesamp ......