Abstract:

Structured fluids such as emulsions and liq. cryst. mesophases can be used to control aroma release. This study shows that the use of a gas sensor array coupled with pattern recognition anal. can be particularly useful in studying volatile profiles. A mixt. of 8 carefully selected volatile, hydrophilic and hydrophobic compds. was entrapped in 4 different matrixes: water, liqs. (sunflower oil, unsatd. monoglycerides), emulsion (20% wt. water) and cubic phases (20 and 30% wt. water). A clear discrimination between the release pattern of the different matrixes has been measured by the sensor array system. It has been shown that the cubic phase release patterns is not only controlled by its compn. but also depended strongly on the lipid/water interfacial area. The combined use of structured fluids (structure-release relationship) and sensor arrays allows the release patterns of volatiles to be controlled and distinguished. [on SciFinder(R)]