Endogenous glycosidase activity

In muscat grapes an endogenous glycosidase activity was demonstrated when increased levels of free geranlol and nerol, but not of linalool, were observed in juice held at pH 5 and 30 C (75). 

Detection of enzymatic Glycosidases, glucuroni- A lar variety of P-galactosidase, Endogenous glycosidase activity is fre- 47... 

Since a few years, new activities have been discovered in relation with fruit cell wall architecture, like new pectinases [1] (i.e. rhamnogalacturonase for the apple) new glycosidases [2](i.e. apiosidase for the grape). The improvement of the knowledge of fruit composition, cell wall chemistry, enzymology of endogenous and exogenous enzymes allow to supply the juice producers with preparations more and more purified and specific, blended in optimal combinations. 

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