1. Department of Chemistry, Faculty of Science, King Khalid University , Abha , Saudi Arabia
2. Unit of Bee Research and Honey Production, King Khalid University , Abha , Saudi Arabia
3. Research Center for Material Science, King Khalid University , Abha , Saudi Arabia
4. School of Allied Health Science, Faculty of Health and Life Sciences, De Montfort University, The Gateway , Leicester LE1 9BH , UK