Coliform Contamination of Peri-urban Grown Vegetables and Potential Public Health Risks: Evidence from Kumasi, Ghana

Kabila Abass, John Kuumuori Ganle, Eric Adaborna

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Peri-urban vegetable farming in Ghana is an important livelihood activity for an increasing number of people. However, increasing quality and public health concerns have been raised, partly because freshwater availability for irrigation purposes is a major constraint. This paper investigated on-farm vegetable contamination and potential health risks using samples of lettuce, spring onions and cabbage randomly selected from 18 vegetable farms in peri-urban Kumasi, Ghana. Vegetable samples were tested for total coliform, fecal coliform, Escherichia coli and Salmonella spp. bacteria contamination using the Most Probable Number method. Results show high contamination levels of total and fecal coliforms, and Escherichia coli bacteria in all 18 vegetable samples. The mean total coliform/100 ml concentration for spring onions, lettuce and cabbage were 9.15 × 109, 4.7 × 107 and 8.3 × 107 respectively. The mean fecal coliform concentration for spring onions, lettuce and cabbage were also 1.5 × 108, 4.15 × 107 and 2.15 × 107 respectively, while the mean Escherichia coli bacteria contamination for spring onions, lettuce and cabbage were 1.4 × 108, 2.2 × 107 and 3.2 × 107 respectively. The level of total coliform, fecal coliform and Escherichia coli bacteria contamination in all the vegetable samples however declined as the distance between the main water source (Wiwi River) and farms increases. Nonetheless, all contamination levels were well above acceptable standards, and could therefore pose serious public health risks to consumers. Increased education and supervision of farmers, as well as public health and food hygiene education of consumers, are critical to reducing on-farm vegetable contamination and the health risks associated with consumption of such vegetables.

Original languageEnglish
Pages (from-to)392-397
Number of pages6
JournalJournal of Community Health
Volume41
Issue number2
DOIs
Publication statusPublished - 1 Apr 2016

Keywords

  • Coliform
  • Contamination
  • Ghana
  • Health risk
  • Peri-urban
  • Vegetable farming

Fingerprint

Dive into the research topics of 'Coliform Contamination of Peri-urban Grown Vegetables and Potential Public Health Risks: Evidence from Kumasi, Ghana'. Together they form a unique fingerprint.

Cite this