What is the protein contents in 100g avocado if the Nitrogen contents is 0.304 gram per 100 gram? (Assume that the nitrogen contents of protein in avocado is 16 %, so use the conversion factor 6.25.)

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When nitrogen values for a food are known, the protein contents is estimated by multiplying the nitrogen contents by a nitrogen-to-protein conversion factor; this factor is often set at 6.25. This factor (dating back to the 19th century) assumes that all organic nitrogen originates from protein and that the nitrogen contents of protein is 16 %. (Note that 100/16 = 6.25). Protein values based on these calculations

(N x 6.25) are called ‘crude’ protein.

Not right. It is not true that 16% of the nitrogen consist of protein. But it is the other way around: 16% of the protein in avocado consists of nitrogen.

Not right. It is not true that 1/16 part of the nitrogen contents consist of protein.

Not right. The nitrogen contents is not equal to the protein contents.

Right! Protein consists for 16% of nitrogen. This means that the protein contents is 100/16 = 6.25 times as high as the nitrogen contents.

Not right. It is not true that the protein contents is 16 times as big as the nitrogen contents. But protein consists for 16% of nitrogen. This means that the protein contents is 100/16 = 6.25 times as high as the nitrogen contents.

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0.05 gram ( i.e. 0.304 / 6.25 or 0.304 * 16% )

0.019 gram ( i.e. 0.304 / 16 )

0.304 gram

1.9 gram ( i.e. 0.304 * 6.25 or 0.304 *100 / 16 )

4.86 gram ( i.e. 0.304 * 16 )