Calcium sensitivity of different HM pectins and their effect on stability of acid milk beverage

The 6 High Methoxyl pectins which were researched deeply before were regarded as the research subject to determine their G″ and G' with frequency scanning explanation for calcium sensitivity. Results demonstrated that HM pectins P1、P2、P3、P4 had obvious calcium sensitivity,respectively,and P5,P6 were noncalcium sensitivity.The order of calcium sensitivity of HM pectins was P1 > P2 > P4 > P3 > P5 ≥P6. Protein stability data showed that there was correlation between calcium sensitivity and protein stability of HM pectins when their viscosity and DE were same,HM pectins with strong calcium sensitivity had better protein stability,whereas low calcium- sensitive HM pectins had poor protein stability.