ANTIMICROBIAL ACTIVITIES AND PHYSICO-CHEMICAL ANALYSES OF HONEYS FROM HYPOTRIGONA SP., MELIPONA SP. AND APIS MELLIFERA (BEE HONEY)
ABSTRACT
Honey has been used traditionally for ages to treat infectious diseases. Antimicrobial activity of honey is complex due to the involvement of multiple bioactive compounds. The physico-chemical and antimicrobial properties of honey varieties from Apis mellifera and stingless bees,Hypotrigona sp. (Okotobo − Igbo) and Melipona sp.(Ifufu − Igbo) were studied using International Honey Commission protocols and microbiological methods (agar-well diffusion and broth microdilution) respectively. A total of nine honey samples (3 from each) were used. The physico-chemical analyses of the honey varieties showed that the honeys had mean pH range of 3.73±0.08 − 4.24±0.20.
Honey samples from Hypotrigona sp. had the highest mean moisture (17.50 ± 0.80 %), total dissolved solids (370.01 ± 22.51 ppm), hydromethylfurfural (16.58 ± 0.37 mg/kg), total acidity (35.57 ± 0.42me q/kg), protein content (16.58 ± 0.37 g/kg)and phenol content (527.41 ± 3.60 mg/kg). Melipona sp. honey had the highest average flavonoids (86.39 ± 4.69 mg/kg), total sugar (80.71 ± 1.37 % (g/100g) and reducing sugar (75.64 ± 1.99 % (g/100g) contents. There were no statistically significant differences between the mean pH, electrical conductivity and protein contents of A. mellifera and Melipona sp. honeys (p< 0.05). Several strong correlations were observed among some of the physicochemical properties of these honey varieties. In the initial antimicrobial activity testing, Hypotrigona sp. honey samples had statistically the highest mean inhibition zones diameter (mm) against MDR Staphylococcus aureus (7.14 ± 4.11), Klebsiella pneumonia(7.92 ± 3.96), Pseudomonas aeruginosa ATCC 25783 (9.77 ±4.58), MDR S. enterica (6.96 ± 4.03),and Aspergillus niger (10.12 ± 5.51).
The minimum inhibitory concentrations (MICs) of the honey varieties from A. mellifera, Hypotrigona sp. and Melipona sp. ranged from 6.3 − 25.0%, 3.1 − 12.5% and 6.3 − 25.0% (v/v) respectively. There were no statistically significant differences between the mean MICs of A. mellifera, Hypotrigona sp. and Melipona sp.honeys against P. aeruginosa ATCC 25783 (7.64 ±2.76, 7.28 ± 4.14 and 8.33 ± 3.31 % v/v respectivel y).Hypotrigona sp. honey had the least mean MICs (4.15 ± 1.58 − 11.11 ± 2.76 % v/v) against most of the test organisms.The minimum biocidal concentration (MBC) of the honey varieties fromA. mellifera, Hypotrigona sp. and Melipona sp. against the test organismsvaried from 6.3 − 50%, 3.1 − 25% and 12 − 50% (v/v) respectively. T here were no statistically significant differences between the mean MBCs of the honey varieties against Klebsiella pneumonia(p = 0.669),P. aeruginosa ATCC 25783 (p = 0.977), A. niger(p = 0.688) and C. albicans (p = 0.168).The honey varieties had exceptional levels of hydrogen peroxide-dependent activity, and non-peroxide activity against the test organisms. This research has also shown that the honey varieties varied significantly in their physicochemical and antimicrobial properties. ‘Okotobo’ and ‘ifufu’ honeys that are both not consumed as widely as regular bee honey have shown to contain bio active compounds and have antimicrobial properties similar to those of regular bee honey.
CHAPTER ONE
Introduction And Literature Review
1.1. Introduction
Traditional medicine has been used to treat infections since the origin of mankind and honey is one of the oldest medicines considered as a remedy for microbial infections (Cooper et al., 2009). It was not until late 19th century that researchers discovered that honey has natural antimicrobial qualities (Zumla and Lulat, 1989). Resistance to antibiotics continues to rise and few new therapies are on the horizon, there is further increased interest in the antimicrobial potency of honey (Fahim et al., 2014). Previous studies showed that honey hadremarkable antimicrobial activity against fungi, bacteria,viruses and protozoa(Molan, 1992; Sherlock et al., 2010; Mohapatra et al., 2011; Fahim et al., 2014).
Honey is a natural sweet mixture produced by honey insects from the nectar of flowers or from living parts of plants. The insect transform the nectar into honey by combining this mixture with substances of their own. The mixture is then regurgitated, dehydrated and stored in the waxy honeycomb inside the hive to ripen and mature for further use (Iurlina and Fritz, 2005). Honey is composed mainly of carbohydrates, smaller amount of water and a great number of minor components. Sugars are the main constituents of honey, constituting of about 95%. Honey characterization is based on the determination of its chemical, physical or biological properties (Gomes et al., 2010).
Even though honey is produced worldwide, its composition and antimicrobial activity can be variable, and are dependent primarily on their botanical origin, geographical and entomological source (Maryann, 2000). Other certain external factors, such as harvesting season, environmental factors, processing and storage condition, also play important roles (Gheldof and Engeseth, 2002). Entomologically, the honey variety produced by honey bees (the genusApis) is one most commonly referred to, as it is the type of honey collected by most beekeepers and consumed by most people in Nigeria. Honeys produced by other insects (stingless insects) have different properties (Sherlock et al.,2010).
Antimicrobial activity of honey is highly complex due to the involvement of multiple compounds and also due to large variations in the concentrations of these compounds among honeys. It depends on osmotic effect (sugar concentration), hydrogen peroxide, and low pH, as well as more recently identified compounds, methyl glyoxal and antimicrobial peptide, bee defensin-1 (Fahim et al., 2014).
CHAPTER TWO
2.0 Literature Review
2.1 Introduction
The review of relevant literature is the main topic of this chapter. A literature review covers theoretical and methodological contributions to a certain issue in addition to the state of knowledge at the time of writing. It provides information about the state of the art in relation to the subject you are writing about. It examines the body of work on the chosen subject. The literature evaluation in this study comprises the …
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TABLE OF CONTENTSPRELIMINARY PAGES
- Title page
- Approval page
- Dedication
- Acknowledgement
- Table of Contents
- Abstract
INTRODUCTION
- ⋮
LITERATURE REVIEW
- 2.1 Introduction
- ⋮
CHAPTER THREE
MATERIALS AND METHODS
- 3.1 Introduction
- ⋮
CHAPTER FOUR
RESULTS AND DISCUSSION
- 4.1 Introduction
- 4.2 Results
- ⋮
- 4.3 Discussion of Findings
CHAPTER FIVE
SUMMARY, CONCLUSION AND RECOMMENDATION
- 5.1 Introduction
- 5.2 Summary
- 5.3 Conclusion
- 5.4 Recommendation
REFERENCES
Disclaimer for Complete Material Utilization
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PRELIMINARY PAGES
- Title page
- Approval page
- Dedication
- Acknowledgement
- Table of Contents
- Abstract
INTRODUCTION
- ⋮
LITERATURE REVIEW
- 2.1 Introduction
- ⋮
CHAPTER THREE
MATERIALS AND METHODS
- 3.1 Introduction
- ⋮
CHAPTER FOUR
RESULTS AND DISCUSSION
- 4.1 Introduction
- 4.2 Results
- ⋮
- 4.3 Discussion of Findings
CHAPTER FIVE
SUMMARY, CONCLUSION AND RECOMMENDATION
- 5.1 Introduction
- 5.2 Summary
- 5.3 Conclusion
- 5.4 Recommendation
REFERENCES
Disclaimer for Complete Material Utilization
The displayed research work titled "Antimicrobial Activities and Physico-Chemical Analyses of Honeys From Hypotrigona Sp., Melipona Sp. and Apis Mellifera (Bee Honey)" is stated as a research guideline towards accomplishing your assigned project / seminar research work. All the research materials on this website are ONLY for research purposes and should be used as a guideline in developing your research work. For no reason should you copy word for word as projectlist.com.ng will not be liable for any who copied the material. By ordering the complete research guideline, it signifies that you've accepted our terms of service.
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