Raghad Salloum* (1), Malek Imran(2), and Ali Sultana(1)
(1) Department of Food Science, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(2) Department of Plant Protection, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author: Raghad Salloum. E-Mail :salloumraghad90@gmail.com)
Received: 14/06/2021 Accepted: 10/10/2021
Abstract:
This research was conducted in the laboratories of the Faculty of Agriculture, Department of Food Sciences at Tishreen University, in order to study the effect of heat treatment and storage on the quality and properties of citrus honey. The average values of the results of chemical and physical tests conducted on fresh citrus honey were as follows: HMF 1.90 mg/Kg, diastase number 10.6 , vitamin C 2.7 mg/Kg, reducing sugar 69.5 %, sucrose 1.8 %, moisture 17.6 %, ash 0.223 %, pH 3.38, total acidity 25.2 mg/Kg. The honey samples were heated at (45-60-70)°C for (15-30) minutes. The samples were left at room temperature (20-25)°C and stored for four months, where physicochemical tests were carried out every month for 4 months. The changes in hydroxymethylfurfural and the number of diastases were observed, as the value of the diastase enzyme decreased during the storage period from 10.5 to 9.11. The heat treatments applied to honey did not affect the number of diastases except for the effect of the storage period. The content of hydroxymethylfurfural in honey increased during the storage period from 2.19 to 5.98.
Keywords: Honey citrus, hydroxyl methyl furfural, Diastase number.
Full paper in Arabic: pdf