Energy homeostasis and energy balance - Energy value of nutrients

6 important questions on Energy homeostasis and energy balance - Energy value of nutrients

How many calories do fat protien and carbohydrates and alcohol have?

fat: 9 cal/g
protein: 4 cal/g
carbohydrate: 4 cal/g
alcohol: 7 cal/g
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What is the gross energy intake?

All energy in a food product.
not everything can be taken up by the body, 98% for carbohdyrates, 95% fort fats and 92% for proteins.
Determons how much heat is libirated by consumption
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What is the digestible enrgy?

The amount of energy that is absorbed, depends on digestibility of food product
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What is the metabolizable energy?

Left energy after accounting for lossing feces and urin,
Proteins 20% of energy is absorbed AA is lost in urin.
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What kind of energy do you see on the labels?

metalizable energy
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What is the metalisable energy of fibers?

In USA 4 cal/g (only soluble fibers)
IN EU cal/g (bouth fibers)
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