The composition of a food can vary widely, depending, among other factors, on the variety of plants or animals, on growing and feeding conditions and, for some foods, on freshness. Food tablesare based on average values from many samples analysed in the laboratory and only provide a rough guide. Because of the errors mentioned above, there will likely be an error of ±10%
On most products, nutritional information is provided on the product packaging. The following is an example of the nutritional information provided on a packet of rice:
The packaging may also include the recommended Guideline Daily Amount (GDA) that we should consume:
So what does the information tell us?
The above product information tells us that every 100g of rice contains 2.4g of protein, 2.9g of fat, 20.5g of carbohydrate, and 118 calories which are 5.9% of GDA for women and 4.7% of GDA for men.
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