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Physicochemical and antioxidant properties of Bangladeshi honeys stored for more than one year.
BMC Complement Altern Med. 2012 Oct 08; 12:177.BC

Abstract

BACKGROUND

There is no available information on physicochemical and antioxidant properties on Bangladeshi honey. We investigated five different monofloral and three different multifloral honey samples collected from different parts of Bangladesh.

METHODS

The levels of phenolics, flavonoids, ascorbic acid, ascorbic acid equivalent antioxidant content (AEAC), proline, protein and antioxidants were determined in the honey samples using ferric reducing antioxidant power (FRAP) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assays.

RESULTS

The highest level of phenolic was 688.5 ± 5.9 mg Gallic acid/kg, and the highest level of flavonoid was 155 ± 6.9 mg Catechin/kg. The highest color intensity was 2034.00 ± 17.5 mAU, and the highest protein content was 8.6 ± 0.0mg/g. High levels of proline (2932.8 ± 3.7 mg/kg), ascorbic acid (154.3 ± 0.3 mg/kg), AEAC (34.1 ± 1.4mg/100 g) and FRAP (772.4 ± 2.5 μmol Fe (II)/100 g) were detected in some of the samples, especially the multifloral honey samples, indicating good antioxidant properties. A strong positive correlation was found between phenolics, flavonoids, DPPH, FRAP and color intensity, indicating that in addition to total phenolic and flavonoid concentrations, color intensity and amino acid are good indicators of the antioxidant potential of honey. Except for a single sample (BDH-6), the honey samples stored for 1.5 years at room temperature still had 5-hydroxymethylfurfural (HMF) values within the recommended range (mean = 10.93 mg/kg), indicating that the rate of HMF production in Bangladeshi honey samples is low.

CONCLUSION

It is postulated that the low rate of HMF formation could be attributed to the acidic and low moisture content in the samples. In general, multifloral honeys have higher antioxidant properties based on their high levels of phenolics, flavonoids, AEAC, DPPH and FRAP when compared to monofloral honeys. We also found that monofloral honey samples from Guizotia abyssinica and Nigella sativa had high antioxidant properties.

Authors+Show Affiliations

Human Genome Centre, School of Medical Sciences, Universiti SainsMalaysia, 16150 Kubang Kerian, Kelantan, Malaysia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23043497

Citation

Islam, Asiful, et al. "Physicochemical and Antioxidant Properties of Bangladeshi Honeys Stored for More Than One Year." BMC Complementary and Alternative Medicine, vol. 12, 2012, p. 177.
Islam A, Khalil I, Islam N, et al. Physicochemical and antioxidant properties of Bangladeshi honeys stored for more than one year. BMC Complement Altern Med. 2012;12:177.
Islam, A., Khalil, I., Islam, N., Moniruzzaman, M., Mottalib, A., Sulaiman, S. A., & Gan, S. H. (2012). Physicochemical and antioxidant properties of Bangladeshi honeys stored for more than one year. BMC Complementary and Alternative Medicine, 12, 177. https://doi.org/10.1186/1472-6882-12-177
Islam A, et al. Physicochemical and Antioxidant Properties of Bangladeshi Honeys Stored for More Than One Year. BMC Complement Altern Med. 2012 Oct 8;12:177. PubMed PMID: 23043497.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Physicochemical and antioxidant properties of Bangladeshi honeys stored for more than one year. AU - Islam,Asiful, AU - Khalil,Ibrahim, AU - Islam,Nazmul, AU - Moniruzzaman,Mohammed, AU - Mottalib,Abdul, AU - Sulaiman,Siti Amrah, AU - Gan,Siew Hua, Y1 - 2012/10/08/ PY - 2012/07/09/received PY - 2012/10/05/accepted PY - 2012/10/10/entrez PY - 2012/10/10/pubmed PY - 2013/5/23/medline SP - 177 EP - 177 JF - BMC complementary and alternative medicine JO - BMC Complement Altern Med VL - 12 N2 - BACKGROUND: There is no available information on physicochemical and antioxidant properties on Bangladeshi honey. We investigated five different monofloral and three different multifloral honey samples collected from different parts of Bangladesh. METHODS: The levels of phenolics, flavonoids, ascorbic acid, ascorbic acid equivalent antioxidant content (AEAC), proline, protein and antioxidants were determined in the honey samples using ferric reducing antioxidant power (FRAP) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assays. RESULTS: The highest level of phenolic was 688.5 ± 5.9 mg Gallic acid/kg, and the highest level of flavonoid was 155 ± 6.9 mg Catechin/kg. The highest color intensity was 2034.00 ± 17.5 mAU, and the highest protein content was 8.6 ± 0.0mg/g. High levels of proline (2932.8 ± 3.7 mg/kg), ascorbic acid (154.3 ± 0.3 mg/kg), AEAC (34.1 ± 1.4mg/100 g) and FRAP (772.4 ± 2.5 μmol Fe (II)/100 g) were detected in some of the samples, especially the multifloral honey samples, indicating good antioxidant properties. A strong positive correlation was found between phenolics, flavonoids, DPPH, FRAP and color intensity, indicating that in addition to total phenolic and flavonoid concentrations, color intensity and amino acid are good indicators of the antioxidant potential of honey. Except for a single sample (BDH-6), the honey samples stored for 1.5 years at room temperature still had 5-hydroxymethylfurfural (HMF) values within the recommended range (mean = 10.93 mg/kg), indicating that the rate of HMF production in Bangladeshi honey samples is low. CONCLUSION: It is postulated that the low rate of HMF formation could be attributed to the acidic and low moisture content in the samples. In general, multifloral honeys have higher antioxidant properties based on their high levels of phenolics, flavonoids, AEAC, DPPH and FRAP when compared to monofloral honeys. We also found that monofloral honey samples from Guizotia abyssinica and Nigella sativa had high antioxidant properties. SN - 1472-6882 UR - https://www.unboundmedicine.com/medline/citation/23043497/Physicochemical_and_antioxidant_properties_of_Bangladeshi_honeys_stored_for_more_than_one_year_ L2 - https://bmccomplementalternmed.biomedcentral.com/articles/10.1186/1472-6882-12-177 DB - PRIME DP - Unbound Medicine ER -