A research note on intrinsic viscosity of high methoxyl pectin in dilute solution: Influence of sweeteners

  • Samavati V
  • Razavi S
  • Mousavi S
 et al. 
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A Brookfield rheometer (Middleboro, MA) was used to investigate the effects of some synthetic sweeteners (aspartame, acesulfame–k, cyclamate and neotame) on intrinsic viscosity of high-methoxyled pectin (HMP) in dilute solutions. The concentration of these sweeteners were 0.1, 0.2% w/v for aspartame, acesulfame–k and cyclamate, and 0.001, 0.002% w/v for neotame. We used various equations such as Huggins, Kraemer, Tanglertpaibul and Rao equations to assess the best model for the determination of the intrinsic viscosity of HMP. The results showed that the values obtained for intrinsic viscosity were different based on the equation used for estimating the intrinsic viscosity. We found 1-1/hrel versus concentration plot as the best model. The results showed that the addition of any of these four synthetic sweeteners at these concentrations had no important effect on the intrinsic viscosity of HMP in solutions.

Author-supplied keywords

  • Artificial sweetener
  • High-methoxyl pectin
  • Intrinsic viscosity

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