TABLE 1.

Selected FTIR bands of Ile-Phe and Val-Phe dipeptide samples at various concentrations and temperatures

Peptide	Concentration % (w/v)	Temperature K	NH	Amide I	COO−
Ile-Phe	0.1	298	3398	1662	1598
Ile-Phe	0.8	298	3396	1661	1598
Ile-Phe	2	298	3397	1660	1570
Ile-Phe	2	323	3387	1659	1597
Val-Phe	2	298	3396	1663	1598
Ile-Phe	2	298	3305	1618	1570
	dehydrated		3403	1658
				1678

Wave numbers are given in cm⁻¹.