Ane xperimental study o n the surf ace prope rties of a queous so lutions of cyclic a mino acid s

Surface tension of h uman-body protein as the biological fluid solution depends on the surface tension o f its constituting comp onents. Prot eins are mad e of amino -acids and t heir properties and biol ogical activities are determined by the nature and sequencing of amino-acids. The surface p roperties o f these ami no acids are important to the structure of proteins and th eir biologica l tasks. Thu s, surface t ension of aqueous solutions of proteinogenic a mino acids [۱] at the human body temperature range unde r liquid/vap er equilibrium is importantly must be known. In this paper, the surface tensio n of L-histidine and L-phenylala nine aqueous solutions are measured experimentally and temperature depe ndence of their surface thermod ynamic properties at diff erent soluti on concentra tions are st udied.

کلیدواژه ها:

Histidine aqueous solutions ، Phenylalanin e aqueous solutions ، Amino acids ، Temperature dependent surface tension ، Capillary raise method ، Surface entropy and energy