Ansult a chart or other reference for sources of the essential amino acids. Use

Question

Ansult a chart or other reference for sources of the essential amino acids. Use this information to decide if following combinations provide the three essential acids, Lys, Trp, and Met. a) rice and garbanzo beans b) rice and oatmeal c) oatmeal and lime beans d) simple corn and beans e) nixtamalized (lye-treated) corn and beans Explain the difference in Parts d and e. 3. The digestive enzyme chymotrypsin cleaves peptides on the carboxy side of large, hydrophobic amino acid residues. Indicate in the following structure with an arrow where chymotrypsin would cleave. Compare this with the lecture slide on where trypsin cleaves the same peptide. H3N-Ala-Phe-Pro-Lys-Gly-Gly-Arg-Trp-Asp Glu-Lys-cys-coo

Explanation / Answer

ans E. nixtamalized ( lye treated) corn and beans

lysine , tryptophan and methionine are important amino acids of our body that are required to produce protein. So they must be ingested from the external food sources.

Nixtamalized corn is the corn treated with alkaline solution usually lime water and then hulled. It is done to remove alfatoxins from the mycotoxin contaminated corn.It also improved the niacin content in maize.

The over consumption of unprocessed corn caused niacin defieciency. Beans are a direct compliment to corn so they can be combined together.

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