Q.• Prepare a list of names and structures of N-containing ingredients of diet.
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Start your 14-day free trial to unlock the full solution →Step 1. Recall the chapter's own opening examples of natural N-containing compounds (section 13.0). The chapter itself names proteins, vitamins, hormones, and plant products such as nicotine as natural sources of nitrogen-containing organic compounds -- these four categories are the natural starting point for the requested dietary list.
Step 2. Amino acids and proteins. Amino acids -- the building blocks of dietary protein -- all carry an amino (-NH2) group; e.g. glycine (H2N-CH2-COOH, the simplest amino acid) and glutamic acid (HOOC-CH2-CH2-CH(NH2)-COOH, found richly in cereals and as the flavour compound in monosodium glutamate). Proteins themselves, built from many amino acids joined by amide (peptide) bonds, are a major nitrogen-containing component of dietary meat, dairy, pulses and cereals.
Step 3. Vitamins. Several B-vitamins are nitrogen-containing: thiamine (vitamin B1, found in whole grains, has a nitrogen-containing ring), niacin (vitamin B3, a pyridine-ring carboxylic acid, found in meat/grains), and pyridoxine (vitamin B6, also a substituted pyridine, found in a wide range of foods). …
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