The influence of acid type on self-assembly, rheological and textural properties of caseinomacropeptide

The influence of acid type (acetic, citric, lactic and hydrochloric acids) on caseinomacropeptide (CMP) self-assembly, rheological and textural properties was analysed. The acidulant selection had a large impact on self-assembly rate, gelation and the hardness of CMP gels. The highest self-assembly and gelation rates were for citric acid, followed by hydrochloric and lactic acids. CMP solutions did not gel when the pH was adjusted with acetic acid during the test period. Product development using CMP must be carefully designed from the point of view of gel properties. A product preparation with CMP gelled with lactic or acetic acids would not be recommended because these acids affect the rheological and textural properties of the gels.