Kilojoules and Grams
Hi, Can you help me please?
I have seen on food products words to the effect that "80gms is equivalent to 410 Opt kJ"
Please can you tell me what "Opt kJ" is and how it's calculated?
Michael Scowen in Melbourne, Australia
After much searching, I only found a few clues to answer your question. Here in America, we assess the content of food using kilocalories. But from my searching, it looks like most of the world uses kilojoules to measure the energy in food.
Grams are a unit of mass or a means to measure the 'weight' of a product. And, I have no idea what the "opt" means.
So, when a food label reads, "80gms is equivalent to 410 Opt kJ," my guess is that they are referring to how much energy (kJ) is in that amount of food (gms). Here are the conversions you would need to figure out nutritional analysis of recipes into kJ:
1 kilocalorie (kcal) = 4.2 kilojoules (kJ)
1 gram of carbohydrate = 16.8 kJ = 4 kcal
1 gram of fat = 37.8 kJ = 9 kcal
1 gram of protein = 16.8 kJ = 4 kcal
Hope this helps,
Desi @ DVO
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