Related Experiment Video
Updated: Dec 25, 2025

Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography-Mass Spectrometry
Published on: June 9, 2021
Multiresponse kinetic modelling of α-dicarbonyl compounds formation in fruit juices during storage
Işıl Gürsul Aktağ1, Vural Gökmen1
1Food Quality and Safety (FoQuS) Research Group, Food Engineering Department, Hacettepe University, 06800 Beytepe, Ankara, Turkey.
Abstract:
This study aims to investigate the formation of α-dicarbonyl compounds in fruit juices and nectars during storage using multi-response kinetic modeling approach. Changes in the concentrations of sugars, amino acids, α-dicarbonyl compounds (glucosone, 3-deoxyglucosone, threosone, methylglyoxal, glyoxal) and 5-hydroxymethylfurfural in apple juice, orange juice and peach nectar were monitored during storage. The concentrations of free amino acids showed no statistically significant change during storage. This suggested that sugar degradation reactions were found responsible for α-dicarbonyl compound formation. In apple and orange juices, the reaction rate constant of glucosone formation was found higher than that of 3-deoxyglucosone formation. Contrary, in peach nectar, 3-deoxyglucosone formation was the dominant. The contribution of fructose dehydration through fructofuranosyl cation on the formation of 5-hydroxymethylfurfural was significantly higher (p < 0.05) than 3-deoxyglucosone dehydration. The use of multi-response kinetic modeling provided better understanding the most possible pathway of sugar degradation reactions in fruit juices.
Related Concept Videos
Loss of Carboxy Group as CO2: Decarboxylation of Malonic Acid Derivatives
Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids
Physical Properties of Carboxylic Acid Derivatives
Among the carboxylic acid derivatives, the boiling points of acid chlorides and esters are very similar and are the lowest in the series. Acid anhydrides have slightly higher boiling...
Physical Properties of Carboxylic Acids
Aldehydes and Ketones with HCN: Cyanohydrin Formation Mechanism
Drug Product Stability

