Abstract: AmberliteXAD-2 to absorb and elute the glycosidically bound volatile aroma compounds from glorious oranges was studied. The effect of hydrolysis with the use of β-D-glucosidase and acid was compared. The result shows that the categories of the bound volatile aroma compounds had obvious difference. Alcohols and acids were dominant in the bound volatile aroma compounds hydrolyzed by β-D-glucosidase, in which mainly were Hexanoic acid, 3-hydroxy-, ethyl ester, 2-Methoxy-4-vinylphenol,3-Oxo-alpha.-ionol and D-Limonene. In contrast, the bound volatile aroma compounds hydrolyzed by acid mainly were lactones and phenols, such as eucarvone, megastigmatrienone, phenol, 2,4-bis(1-phenylethyl)-and 3-oxo-α-ionone etc. In addition, there was an apparent difference after olfaction analysis.

Key words: glorious orange； bound volatile aroma compounds； hydrolysis by &beta, -D-glucosidase； hydrolysis by acid；