Parâmetros de qualidade e percepção sensorial de queijo de coalho com substituição parcial de NaCL por KCL

Abstract

Coalho cheese is configured as one of the most widespread dairy and prized in the Northeast, with the main source of income for farmers . The addition of sodium chloride it is one of the key steps in the process, but are concrete evidence linking high sodium intake to cardiovascular disease and hypertension. One of the strategies aiming to decrease the consumption of NaCl is the partial substitution of potassium chloride (KCl) . This research aimed to assess, in preliminary tests the best conditions for salting and percentage of salt inserted into curd, then aiming to optimize the levels of NaCl and KCl using a design type experimental a central composite design. The effects of combinations of salts on physico-chemical characteristics such as percentage of moisture , total solids , ash , protein, lipid , fat solids and chlorides , performed physical analysis of water activity , pH and color were evaluated in addition to sensory responses by Quantitative Descriptive Analysis. The levels assessed, no differences in the physical or physico- chemical parameters , only evidenced significant changes in the percentages of chlorides and ash were observed . Sensory attributes raised by the judges , the perception of salty taste , flavor Residual Bitter and White Color Feature were significant , outlining a great range of concentrations when interacting with each other, corresponding to concentration ranges between 1.2% KCl and 2.3 % NaCl added directly into the curds . At these concentrations it is possible to obtain a decrease of 34% NaCl in use, being appreciated sensory rated by consumers when untrained.