food science- full presentation

8/13/2019 Food Science- Full Presentation

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History of IodineFDSC 214Mallori Lawson, Caroline Lodge, Katelyn Henry,

Christopher Link, Paul Leonard

April 11th , 2013


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Discovered by French chemist,Bernard Courtois in 1811 due to afortuitous accident.

Courtois was extracting sodium (Na)and potassium (K) from seaweedash in an effort to make gunpowderfor Napoleon's army. After theywere removed, he added too muchsulfuric acid to the ash and a violenteruption occurred.The gas from the eruptioncondensed only metal objects in theroom and created solid iodine (I).

How Iodine Originated


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Further research showed that iodine had antisepticqualities due to its water soluble component.Dr. Jean Frances Condet discovered that iodine couldbe used to reduce goiters (enlarge thyroids)Iodines medical use took off from there Today iodine is obtained from deposits of sodiumiodate and sodium periodate in Chile and Bolivia.

Medicinal History of Iodine


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Why is Iodine Intake Important? Iodine is essential for hormone developmentin the thyroid gland

- Metabolism control

- Development of the brain Leading cause of preventable intellectualdiseases include mental retardation inchildren, stunted growth, and hearing

problems.- One study has shown that low levels ofiodine in pregnant women decreases a childsIQ by as much as 10 to 15 points


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Which Foods Contain Iodine?


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Composition of Iodine in Foods


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Upper Intake Level (UL) for Iodine

Age Group UL (mcg/day) Infants 0-12 months Not possible to establish*Children 1-3 years 200 mcg/dayChildren 4-8 years 300 mcg/day

Children 9-13 years 600 mcg/dayAdolescents 14-18 years 900 mcg/dayAdults 19 years and older 1,100 mcg/day (1.1 mg/day)

Proper Intake Levels of Iodine


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Iodized salt (table salt) is most commonly used and isextracted from mines.Iodized salt serves as an iodine supplement if you arenot absorbing the proper amount in your diet.Sea salt is more natural and its source is the ocean,but only has trace amounts of iodine.Which ever the salt type, use it in moderation!

Iodized Salt vs. Sea Salt


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Double-blind, placebo-controlled study was conducted inNew Zealand involving almost 200 10-13 year old childrenEach child took a daily tablet but only some contained 150micrograms of iodine, the others were placebos.

For 28 weeks, cognitive performance was tested using 4subtests

Iodine Improves Cognitive Functionin Children


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Results of the Study

Iodine Supplementationimproved scores for two of

the four cognitive subtests Perceptual reasoning wasgreatly improved through anincrease in iodineconsumption

Concern: mild iodinedeficiencies can prevent kidsfrom obtaining their fullintellectual potential


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1. True or False: Iodine can be found in milk.2. True or False: Iodine consumption has no significant

role in a childs intellectual ability. 3. True or False: Iodine was first discovered in 1811.4. True or False: Iodine is obtained from Africa and

South Carolina.5. True or False: The Iodine study was a double-blind,

placebo-controlled study.

Questions


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1.Gagnon, Steve. "The Element Iodine." It's Elemental - . Thomas Jefferson National

Accelerator Facility - Office of Science Education, n.d. Web. 04 Apr. 2013.

2. Gordon, Rosie C. "The American Journal of Clinical Nutrition." Iodine

Supplementation Improves Cognition in Mildly Iodine-deficient

Children . N.p., 2 Sept. 2009. Web. 13 Mar. 2013.

3. "Iodine." Health Professional Fact Sheet . N.p., 24 June 2011. Web. 13 Mar. 2013.

4. Weil, Andres, M.D. "Q & A Library." Why Buy Iodized Salt? N.p., 8 Feb. 2011. Web.

04 Apr. 2013.

References

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