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Lecture 8 Food - Food 2 Minerals Macrominerals Trace...

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Food- 2 Minerals Macrominerals Trace elements Vitamins Fat-soluble Water-soluble Fiber Water Food additives Additives that improve nutrition Additives that taste good Artificial sweeteners Flavor enhancers Spoilage inhibitors Antioxidants Food colors
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Minerals Several inorganic substances, called dietary minerals, are vital to life. Dietary minerals classified as "macrominerals" are required in relatively large amounts. Conversely "microminerals" or "trace minerals" are required relatively in minute amounts. Macrominerals: Na + , K + , Ca 2+ , Mg 2+ , Cl - , H 2 PO 4 - , SO 4 2- Sodium, potassium and chloride ions are important in the exchange of fluids between the cells and blood. Calcium and phosphorous are necessary for the proper development of bones and teeth. Calcium ions are necessary for the coagulation of blood (to stop bleeding), and for maintenance of the rhythm of the heartbeat. Phosphorous as phosphate units occurs in ATP, the “energy currency” of the cell. Phosphate units are also part of the nucleic acid backbone. Calcium and magnesium are essential for the proper functioning of metalloenzymes, which are life sustaining.
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Iron, copper, zinc, cobalt, manganese, molybdenum, selenium are essential to the proper function of metalloenzymes, which are life-sustaining.
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