From his experiments, Dr. Rose found that only eight of the ten amino acids essential to rats were also essential to men — we were better at making two amino
acids than rats.
Not exact matches
A key liver enzyme converts folic
acid to a useful form much more slowly in humans
than it does in
rats, researchers report online August 24 in the Proceedings of the National Academy of Sciences.
Researchers who attempted to quantify the essential fatty
acid requirement using purified fatty
acids showed that just over two percent of calories as linoleic
acid was needed to prevent deficiency in growing
rats while less
than 0.7 percent of calories as arachidonic
acid was needed.10 Lower amounts of arachidonic
acid may have proven effective had the researchers tested them.
8 The Burrs showed that the requirement was only 0.4 percent of calories when they used lard to cure the disease in growing
rats and that the requirement was only 0.1 percent of calories when they used liver to cure it.7 Liver probably proved more effective
than lard both because it is much richer in arachidonic
acid and because it is rich in vitamin B6, which greatly enhances the conversion of linoleic
acid to arachidonic
acid.19
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Most amino
acid concentrations (Ile, Leu, Met, Thr) were higher during the postprandial state
than during the postabsorptive state, and this increase was similar in adult and old
rats.