Table of Contents
CHAPTER ONE: Introduction
- 1.1 Background to the Study p. 1
- 1.2 Statement of the Problem p. 3
- 1.3 Objectives of the Study p. 4
CHAPTER TWO: Literature Review
- 2.1 Review of Related Literature p. 9
- 2.2 Theoretical Framework p. 12
CHAPTER THREE: Methodology
- 3.1 Research Design p. 18
- 3.2 Population and Sample p. 20
CHAPTER FOUR: Results and Discussion
- 4.1 Data Analysis p. 26
- 4.2 Discussion of Findings p. 30
CHAPTER FIVE: Summary and Conclusion
- 5.1 Summary p. 35
- 5.2 Conclusion p. 38
- 5.3 Recommendations p. 40
Abstract
ABSTRACT
Herbal mixtures are widely consumed for their perceived health benefits, but
microbial contamination poses significant health risks to consumers. This study
assessed the bacterial contamination of packaged and roadside herbal mixtures
derived from aqueous extracts. Twenty (20) samples were collected and were
cultured on Nutrient agar (NA), MacConkey agar (MAC) and Mannitol salt agar
(MSA) respectively using spreading plate method. After which the agar plates were
incubated at 37oC for 24 hours and the total aerobic bacterial load were observed to
range from 2.4×105
to 4.2×105 CFU/mL, while coliform counts ranged from 2.0×103
to 3.4×103
indicating significant contamination. Six bacterial species were
identified: Staphylococcus aureus (35%), Pseudomonas aeruginosa (30%),
Salmonella spp. (30%), Bacillus subtilis (15%), Bacillus cereus (20%), and
Micrococcus spp. (15%). The prevalence of Staphylococcus aureus and coliform
bacteria suggests risks of toxin-mediated illnesses and gastrointestinal infections.
Findings from this study align highlights the widespread of contamination in herbal
mixtures due to poor hygiene practices, inadequate quality control, and
environmental exposure and therefore recommends the urgent need for regulatory
frameworks to ensure hygiene standards in herbal mixture preparation and
distribution.
Herbal mixtures are widely consumed for their perceived health benefits, but
microbial contamination poses significant health risks to consumers. This study
assessed the bacterial contamination of packaged and roadside herbal mixtures
derived from aqueous extracts. Twenty (20) samples were collected and were
cultured on Nutrient agar (NA), MacConkey agar (MAC) and Mannitol salt agar
(MSA) respectively using spreading plate method. After which the agar plates were
incubated at 37oC for 24 hours and the total aerobic bacterial load were observed to
range from 2.4×105
to 4.2×105 CFU/mL, while coliform counts ranged from 2.0×103
to 3.4×103
indicating significant contamination. Six bacterial species were
identified: Staphylococcus aureus (35%), Pseudomonas aeruginosa (30%),
Salmonella spp. (30%), Bacillus subtilis (15%), Bacillus cereus (20%), and
Micrococcus spp. (15%). The prevalence of Staphylococcus aureus and coliform
bacteria suggests risks of toxin-mediated illnesses and gastrointestinal infections.
Findings from this study align highlights the widespread of contamination in herbal
mixtures due to poor hygiene practices, inadequate quality control, and
environmental exposure and therefore recommends the urgent need for regulatory
frameworks to ensure hygiene standards in herbal mixture preparation and
distribution.