تقدير محتوى السكريات وتأثير المعاملات الحرارية على محتوى الهيدروكسي ميثايل فورفورال في عينات من  العسل المنتج من مناطق مختلفة من الجبل الأخضر – ليبيا

Ramadan E. Abdolgader; Ateea A. Bellail; Mabruka M. Ali; Abrehem A.      Hmed

doi:10.54172/mjsc.v31i2.283

Authors

Ramadan E. Abdolgader Food science & technology Dep. Faculty of Agriculture, Omar Al-Mukhtar University, Albeida, Libya
Ateea A. Bellail Food science & technology Dep. Faculty of Agriculture, Omar Al-Mukhtar University, Albeida, Libya
Mabruka M. Ali Food science & technology Dep. Faculty of Agriculture, Omar Al-Mukhtar University, Albeida, Libya
Abrehem A. Hmed Food science & technology Dep. Faculty of Agriculture, Omar Al-Mukhtar University, Albeida, Libya

DOI:

https://doi.org/10.54172/mjsc.v31i2.283

Keywords:

Honey, reducing sugar, total sugar, hydroxymethyl furfural, heat treatment

Abstract

Five local varieties of honey found in the eastern region of Libya (Al-Jabal Al-Akhdar) were chosen for this study. These varieties are locally known as follow: Hannon, Rabee, Zaater, Sidr and Kafoor. Honey samples were obtained from the farmers directly after harvesting of each variety during Fall 2012 and Winter 2013. The reducing and non-reducing sugars, and effect of heat treatment on hydroxyl methyl furfural of the honey samples was investigated. The results indicated that the reducing sugars content of honey samples varied from 70.36 to 76.20%, sucrose from 2.10 to 4.46%, glucose and fructose from 28.6 to 33.6% and 38.3 to 40.9%, respectively. The values of hydroxymethylfurfural for all samples were less than 40 mg/kg. The HMF level increased regularly after storage on day light both in Zaater and Hannon honeys and at the end of process was 32.5 mg/kg and 33.1 mg/kg, respectively.All honey samples exceeded allowable value (40 mg/kg) set for HMF after 48 h from heat treatment at 50 ^oCon the other hand most samplesexceeded allowable value for HMF after 12 h from heat treatment at 70 ^oC.TheHannon honeywas highest affected by heat treatment while the Kafoor was the lowest.

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