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Iodine losses in iodised salt following different storage methods
1Department of Foods and Nutrition, Rural Home Science College, University of Agricultural Sciences, Dharwad, Karnataka.
Indian Journal of Pediatrics
|September 14, 2000
Summary
Intact salt packets best preserve iodine content. Powdered and brown crystal salts retain recommended iodine levels after storage, unlike white crystal salt which significantly loses iodine.
Area of Science:
- Food Science
- Nutrition
- Public Health
Background:
- Iodized salt is crucial for preventing iodine deficiency disorders.
- Proper storage is essential to maintain the efficacy of iodized salt.
Purpose of the Study:
- To evaluate iodine retention in different types of iodized salt under various common storage conditions.
- To determine the impact of storage methods and salt types on iodine stability.
Main Methods:
- Iodine content was measured in powdered, white crystal, and brown crystal iodized salts.
- Salts were stored using common methods: intact packet, open packet, glass jar, plastic jar, and earthenware pot.
- Iodine retention was assessed at 15-day intervals.
Main Results:
- Intact salt packets showed the highest iodine retention (97.19%).
- Other storage methods retained over 80% iodine, with open packets (88.41%) and glass jars (84.72%) performing well.
- Powdered salt (91.16%) and brown crystal salt (84.24%) maintained recommended iodine levels, while white crystal salt dropped to 7 ppm.
Conclusions:
- Storage method significantly impacts iodine retention in iodized salt.
- Powdered and brown crystal iodized salts are more stable during storage than white crystal salt.
- Recommendations for optimal storage of iodized salt are needed to ensure adequate iodine intake.