Impact after 1 year of compulsory iodisation on the iodine content of table salt at retailer level in South Africa

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dc.contributor.authorJooste, P.L.
dc.contributor.authorWeight, M.J.
dc.contributor.authorLocatelli-Rossi, L.
dc.contributor.authorLombard, C.
dc.contributor.departmentNational Research Programme for Nutritional Intervention, Medical Research Council, PO Box 19070, Tygerberg, 7505, South Africa, Statistics Division of the Centre for Epidemiological Research, Medical Research Council, PO Box 19070, Tygerberg, 7505, South Africa.en_US
dc.date.accessioned2019-11-21T08:35:48Z
dc.date.available2019-11-21T08:35:48Z
dc.date.epub2009-07-06
dc.date.issued1999
dc.descriptionThe short-term effectiveness of introducing compulsory iodisation through revised health legislation, evaluated in terms of the iodine content of iodised table salt, was investigated in three of the nine provinces in South Africa. Shortly before the introduction of compulsory iodisation of table salt in December 1995, iodised at a higher level than before, 187 iodised salt samples were purchased at retailers in 48 magisterial districts situated in the three provinces of Western and Eastern Cape and Mpumalanga for analysis of the iodine content using the titration method. In a follow-up I year later 287 iodised salt samples were obtained from the same retailers for iodine determination. The mean iodine content of iodised salt increased significantly from 14 to 33 ppm. However, large variation in the iodine content of iodised table salt among and within salt brands existed at follow-up, and the mean iodine content was lower than the legal specification of 40 to 60 ppm. Only 24% of the samples were found within the range required by the law at follow-up compared to 42% before revising the salt legislation. Despite the introduction of compulsory salt iodisation, the mean retail price of iodised salt remained the same between 1995 and 1996 for a 500 g package of salt. Further refinement of the iodisation process is necessary to improve the accuracy of iodisation and decrease the variation in iodine content. This study nevertheless showed that the introduction of compulsory iodisation and elevating the legally specified iodine level of table salt resulted in a significantly elevated mean iodine level of iodised salt within I year, without any additional cost to the consumer..en_US
dc.description.abstractThe short-term effectiveness of introducing compulsory iodisation through revised health legislation, evaluated in terms of the iodine content of iodised table salt, was investigated in three of the nine provinces in South Africa. Shortly before the introduction of compulsory iodisation of table salt in December 1995, iodised at a higher level than before, 187 iodised salt samples were purchased at retailers in 48 magisterial districts situated in the three provinces of Western and Eastern Cape and Mpumalanga for analysis of the iodine content using the titration method. In a follow-up I year later 287 iodised salt samples were obtained from the same retailers for iodine determination. The mean iodine content of iodised salt increased significantly from 14 to 33 ppm. However, large variation in the iodine content of iodised table salt among and within salt brands existed at follow-up, and the mean iodine content was lower than the legal specification of 40 to 60 ppm. Only 24% of the samples were found within the range required by the law at follow-up compared to 42% before revising the salt legislation. Despite the introduction of compulsory salt iodisation, the mean retail price of iodised salt remained the same between 1995 and 1996 for a 500 g package of salt. Further refinement of the iodisation process is necessary to improve the accuracy of iodisation and decrease the variation in iodine content. This study nevertheless showed that the introduction of compulsory iodisation and elevating the legally specified iodine level of table salt resulted in a significantly elevated mean iodine level of iodised salt within 1 year, without any additional cost to the consumer.en_US
dc.identifier.citationJOOSTE PL, WEIGHT MJ, LOCATELLI-ROSSI L, LOMBARD CJ. Impact after 1 year of compulsory iodisation on the iodine content of table salt at retailer level in South Africa. International journal of food sciences and nutrition [Internet].en_US
dc.identifier.issn0963-7486.
dc.identifier.journalInternational Journal of Food Science and Nutrition.en_US
dc.identifier.urihttps://infospace.mrc.ac.za/handle/11288/595209
dc.language.isoenen_US
dc.publisherCarfax.en_US
dc.relation.urlhttp://pascal-francis.inist.fr/vibad/index.php?action=search&terms=1732067en_US
dc.research.unitBiostatistics Uniten_US
dc.research.unitNon-Communicable Disease Research Uniten_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.subjectFood science and technologyen_US
dc.subjectNutritionen_US
dc.subjectObesityen_US
dc.subjectMetabolic disordersen_US
dc.subjectBiological and medical sciencesen_US
dc.subjectMedical sciencesen_US
dc.subjectNational surveyen_US
dc.subjectInorganic elementen_US
dc.subjectIodationen_US
dc.subjectIodineen_US
dc.subjectSalten_US
dc.subjectAfricaen_US
dc.subjectSouth Africaen_US
dc.titleImpact after 1 year of compulsory iodisation on the iodine content of table salt at retailer level in South Africaen_US
dc.typeArticleen_US
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