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Screening of Escherichia coli O157:H7 contamination and nitrate content on Butterhead lettuce from market outlets


Citation

Yusoff, Siti Fairuz and Tengku Muda Mohamed, Mahmud and Haron, Farah Farhanah (2018) Screening of Escherichia coli O157:H7 contamination and nitrate content on Butterhead lettuce from market outlets. Indian Journal of Public Health Research and Development, 9 (11). 1460 - 1466. ISSN 0976-0245; ESSN: 0976-5506

Abstract

Escherichia coli O157:H7 is classified as biological hazard that can produce a bloody diarrhea due to its toxins. While nitrate in vegetables is classified as a chemical hazard if ingested greater than limit and risk getting gastrointestinal cancer and methemoglobinaemia. A study was conducted to obtain the information on E. coli O157:H7 contamination and nitrate content in Butterhead lettuce from local suppliers. The number of colonies E. coli O157:H7 from the lettuce was enumerated using standard plate count and the nitrate content was measured using nitrate meter. From the experiment, it was found that E. coli O157:H7 contamination of Butterhead lettuce in Malaysia is still within the safe limit for the consumers while the nitrate content was distributed differently between leaf structures; midrib, outer adult leaf blade and young leaves. Lettuce midrib and outer adult leaf blade had a higher concentration of nitrate compared to the young leaves.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
DOI Number: https://doi.org/10.5958/0976-5506.2018.01656.X
Publisher: Institute of Medico-Legal Publications
Keywords: Escherichia coli O157:H7; Nitrate; Butterhead lettuce
Depositing User: Ms. Nida Hidayati Ghazali
Date Deposited: 15 Jul 2021 08:43
Last Modified: 17 Jul 2021 23:22
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.5958/0976-5506.2018.01656.X
URI: http://psasir.upm.edu.my/id/eprint/73835
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