Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Food safety risks associated with the use of contaminated agricultural water in the production of table grapes
Mini Dissertation (MSc)--University of Pretoria, 2012.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
University of Pretoria
2016
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613567100911616 |
|---|---|
| access_status_str | Open Access |
| author2 | Korsten, Lise |
| author_browse | Korsten, Lise |
| author_facet | Korsten, Lise |
| collection | Thesis |
| dc_rights_str_mv | © 2016, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Mini Dissertation (MSc)--University of Pretoria, 2012. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/53512 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:11.690Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/53512 Food safety risks associated with the use of contaminated agricultural water in the production of table grapes Korsten, Lise mahafham@webmail.com Mahafha, Musiiwa Morris UCTD Mini Dissertation (MSc)--University of Pretoria, 2012. Most agricultural water sources are often considered contaminated, due to poorly maintained sanitation systems, polluted river streams and other water catchment areas. Agricultural water used for irrigation and reconstitution of pesticides is suspected to play a direct or indirect role in the transmission of human pathogens to fresh produce. The contamination of fresh table grapes during pesticide spraying can therefore be seen as a potential risk factor. This study focuses on identifying possible sources and levels of bacterial contamination in a river, holding dam and tank in table grape production areas. In addition, the ability of selected pathogens to attach and survive on table grape surfaces was studied using transmission electron microscopy. Water sources sampled in this study were found to be microbiologically contaminated. Microbial populations varied with season, sampling period within a season and water treatment conditions. No human pathogens were detected under natural field conditions on crops irrigated with contaminated water used for reconstituting agricultural pesticides. This study further showed a wide range of pesticide products that permitted survival and multiplication of most of the tested foodborne pathogens i.e. Escherichia coli 157:H7, Listeria monocytogenes, Salmonella enterica subsp. enterica serovar Typhimurium and Staphylococcus aureus. This information provides insight into the potential risk that may be associated with table grapes due to the use of contaminated water. These findings highlight the importance of considering pesticides used, water quality and spray schedules prior to application. Detailed risk assessment studies on the potential of contaminated irrigation water and the actual link with foodborne disease outbreaks have not been investigated and should in future be determined as well as intervention strategies. Microbiology and Plant Pathology MSc Unrestricted 2016-07-01T10:33:13Z 2016-07-01T10:33:13Z 2012-04-01 2012 Mini Dissertation Mahafha, MM 2016, Food safety risks associated with the use of contaminated agricultural water in the production of table grapes, MSc Mini Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/53512> A2016 http://hdl.handle.net/2263/53512 en © 2016, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Food safety risks associated with the use of contaminated agricultural water in the production of table grapes |
| title | Food safety risks associated with the use of contaminated agricultural water in the production of table grapes |
| title_full | Food safety risks associated with the use of contaminated agricultural water in the production of table grapes |
| title_fullStr | Food safety risks associated with the use of contaminated agricultural water in the production of table grapes |
| title_full_unstemmed | Food safety risks associated with the use of contaminated agricultural water in the production of table grapes |
| title_short | Food safety risks associated with the use of contaminated agricultural water in the production of table grapes |
| title_sort | food safety risks associated with the use of contaminated agricultural water in the production of table grapes |
| topic | UCTD |
| url | http://hdl.handle.net/2263/53512 |