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Updated: Jul 23, 2025

Fruit Volatile Analysis Using an Electronic Nose
Published on: March 30, 2012
Release of glycosidically-bound volatiles in orange juice under natural conditions
Yujing Sun1, Hongjuan Zhang1, Wei Peng1
1College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China.
Abstract:
Glycosidically-bound volatiles (GBV) can be released by exogenous acid and enzymatic hydrolysis. However, the liberation of GBV in natural juice is not reported. It was found that part of the GBV in orange juice (OJ) under natural conditions can be released and the types of volatiles were considerably fewer than the ones under exogenous acid, or enzymatic hydrolysis. Seven types of aroma substances were released under endogenous enzyme, among which ethyl 3-hydroxyhexanoate and eugenol are characteristic aroma substances of OJ. Six kinds of aroma substances can be released under natural acidic conditions, none are characteristic aroma substances of OJ. Ten kinds of substances were released under endogenous enzymes in combination with the acidic condition, among which benzyl alcohol, ethyl 3-hydroxyhexanoate, citral, and eugenol are characteristic aroma substances of OJ. The results indicated that GBV may play an important role in resisting the decrease of free aroma in OJ during storage.
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