Nutr Res Pract.  2014 Aug;8(4):439-444.

Analysis of micromineral contents of school meals

• Shin D

Abstract

BACKGROUND/OBJECTIVES
Korean ordinary diets are referred to be good for human health in worldwide. However it is uncertain whether they provide microminerals enough for growth and health of teenagers. A main purpose of this study was to identify micromineral contents in school meals.
MATERIALS/METHODS
The fifty cuisines were collected from elementary schools and middle schools in Gyeongnam area. The contents of Fe, Zn, Cu and Mn among microminerals were analyzed by using ICP-OES method. Data were expressed as mean, standard deviation and range value and linear regression analysis performed.
RESULTS
Fe level of Pangibuseotpaprika-salad was the highest among side-dishes (average 346.6 microg) and Zn level of Sullung-tang was highest among soups (average 229.1 microg). Cu level of Buchu-kimchi was the highest among kimchies (average 217.5 microg) and Mn level of Gumeunkongyangnyum-gui was highest among side-dishes (average 198.4 microg). Generally cooked-rices as main dish had relative smaller amounts of microminerals than the other cuisines. The results showed that the ratio of Cu : Fe : Zn was approximately 12 : 4 : 1 and the relationship between Fe versus Zn or Fe versus Cu was significantly positive.
CONCLUSION
Comparing to Korean Dietary Recommended Intakes (KDRI) level, school meals provided not sufficient amount (<25% DRI) of Fe, Zn or Mn, while they did excessive amount (>125% DRI) of Cu.

Keyword

Microminerals; ICP-OES method; school meals

MeSH Terms

Adolescent
Diet
Humans
Linear Models
Meals*

Figure

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  Fig. 1 Micromineral contents per serving size of school meals

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  Fig. 2 Contribution of each cuisine to total amounts and % DRI of Fe, Zn, Cu & Mn in school meals. (A) Micromineral amounts (µg), (B) % DRI of each micromineral

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  Fig. 3 Relationship between microminerals in school meals. (A) Fe & Zn, (B) Cu & Zn, (C) Mn & Zn, (D) Mn & Cu, (E) Fe & Cu, (F) Fe & Mn. The unit of all microminerals is percentage of DRI (% DRI).

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