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Evaluation of Egyptian honeys and their floral origins: phenolic compounds, antioxidant activities, and antimicrobial characteristics.
Environ Sci Pollut Res Int. 2020 Jun; 27(17):20748-20756.ES

Abstract

This study reports the physicochemical characterization of clover (Trifolium hybridum) and citrus (Citrus sinensis) honeys produced in Fayoum, Egypt, by evaluating the analysis of moisture content, pH, total soluble solids (TSS), electric conductivity (EC), total sugars, crude protein, ash content, total acidity, hydroxymethylfurfural (HMF), and total phenolic compounds (TPC). Antioxidant and antimicrobial activities of honey extracts and their flower extracts were determined. The results clearly indicated that ethanol gave the highest extraction yield of both clover and citrus flowers, while ethyl acetate showed the highest extraction recovery for the phenolic compounds, with TPC amounting to 338.5 and 536.4 mg gallic acid equivalent kg-1 fresh weight in clover and citrus flower extracts, respectively. Honey samples have less TPC than their flowers. The results showed that the TPC of citrus honey and its flowers was higher than clover honey and its flowers, respectively. Antioxidant activity was higher in extracts obtained from citrus flower than extracts of clover flower. The same trend was noticed for honey samples. Both clover and citrus honeys showed antimicrobial effects against tested microorganisms. HPLC analysis showed that p-coumaric acid was the main phenolic component in ethanol extracts of clover and citrus honeys, contributing about 83.0% and 52.2%, respectively. In citrus and clover flower extracts, syringic acid and quercetin were the main phenolics, respectively. It would be expected that characteristics of honey samples are mainly depended on the floral origin of nectar foraged by bees.

Authors+Show Affiliations

Food Science and Technology, Faculty of Agriculture, Fayoum University, Faiyum, Egypt.Microbiology Department, Faculty of Agriculture, Fayoum University, Faiyum, Egypt.Plant Protection Department, Faculty of Agriculture, Fayoum University, Faiyum, Egypt.Food Science and Technology, Faculty of Agriculture, Fayoum University, Faiyum, Egypt.Agricultural Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig, 44519, Egypt. mhassanien@uqu.edu.sa. Deanship of Scientific Research, Umm Al-Qura University, Makkah, Kingdom of Saudi Arabia. mhassanien@uqu.edu.sa.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32248421

Citation

Roby, Mohamed H H., et al. "Evaluation of Egyptian Honeys and Their Floral Origins: Phenolic Compounds, Antioxidant Activities, and Antimicrobial Characteristics." Environmental Science and Pollution Research International, vol. 27, no. 17, 2020, pp. 20748-20756.
Roby MHH, Abdelaliem YF, Esmail AM, et al. Evaluation of Egyptian honeys and their floral origins: phenolic compounds, antioxidant activities, and antimicrobial characteristics. Environ Sci Pollut Res Int. 2020;27(17):20748-20756.
Roby, M. H. H., Abdelaliem, Y. F., Esmail, A. M., Mohdaly, A. A. A., & Ramadan, M. F. (2020). Evaluation of Egyptian honeys and their floral origins: phenolic compounds, antioxidant activities, and antimicrobial characteristics. Environmental Science and Pollution Research International, 27(17), 20748-20756. https://doi.org/10.1007/s11356-020-08586-7
Roby MHH, et al. Evaluation of Egyptian Honeys and Their Floral Origins: Phenolic Compounds, Antioxidant Activities, and Antimicrobial Characteristics. Environ Sci Pollut Res Int. 2020;27(17):20748-20756. PubMed PMID: 32248421.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of Egyptian honeys and their floral origins: phenolic compounds, antioxidant activities, and antimicrobial characteristics. AU - Roby,Mohamed H H, AU - Abdelaliem,Yasser Fathy, AU - Esmail,Abdel-Halem Meshref, AU - Mohdaly,Adel A A, AU - Ramadan,Mohamed Fawzy, Y1 - 2020/04/04/ PY - 2019/11/29/received PY - 2020/03/25/accepted PY - 2020/4/6/pubmed PY - 2020/7/11/medline PY - 2020/4/6/entrez KW - Antimicrobial KW - Antioxidant KW - Citrus honey KW - Clover honey KW - Floral KW - Flower KW - Hydroxymethylfurfural KW - Phenolic compounds KW - Physicochemical characterization KW - Trifolium hybridum SP - 20748 EP - 20756 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 27 IS - 17 N2 - This study reports the physicochemical characterization of clover (Trifolium hybridum) and citrus (Citrus sinensis) honeys produced in Fayoum, Egypt, by evaluating the analysis of moisture content, pH, total soluble solids (TSS), electric conductivity (EC), total sugars, crude protein, ash content, total acidity, hydroxymethylfurfural (HMF), and total phenolic compounds (TPC). Antioxidant and antimicrobial activities of honey extracts and their flower extracts were determined. The results clearly indicated that ethanol gave the highest extraction yield of both clover and citrus flowers, while ethyl acetate showed the highest extraction recovery for the phenolic compounds, with TPC amounting to 338.5 and 536.4 mg gallic acid equivalent kg-1 fresh weight in clover and citrus flower extracts, respectively. Honey samples have less TPC than their flowers. The results showed that the TPC of citrus honey and its flowers was higher than clover honey and its flowers, respectively. Antioxidant activity was higher in extracts obtained from citrus flower than extracts of clover flower. The same trend was noticed for honey samples. Both clover and citrus honeys showed antimicrobial effects against tested microorganisms. HPLC analysis showed that p-coumaric acid was the main phenolic component in ethanol extracts of clover and citrus honeys, contributing about 83.0% and 52.2%, respectively. In citrus and clover flower extracts, syringic acid and quercetin were the main phenolics, respectively. It would be expected that characteristics of honey samples are mainly depended on the floral origin of nectar foraged by bees. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/32248421/Evaluation_of_Egyptian_honeys_and_their_floral_origins:_phenolic_compounds_antioxidant_activities_and_antimicrobial_characteristics_ L2 - https://dx.doi.org/10.1007/s11356-020-08586-7 DB - PRIME DP - Unbound Medicine ER -