Abstract
Most of potato starches are produced in Hokkaido prefecture in Japan. Some physicochemical properties of potato starches produced in 17 representative potato starch factories in Hokkaido were investigated. The values in each properties and the Gorrelations among rheological properties of starch pastes and gels, average size of starch granule and mineral contents were calculated. It was found that (1) maximum viscosity in amylograms was closely connected with dynamic viscosity of pastes, Young's modules of gels and potassium content, (2) average size of starch granule had close relationships to dynamic modulus of pastes, Young's modulus and strain ratio of gels, and (3) phosphorus content had relatively high relation to breaking strength of gels.
