Study on the texture analysis conditions of banana jam

To provide the theoretical reference for texture analyzer applied to the characteristic determination of jam products,the influence of different probes and test speeds on the hardness,viscous force and adhesion of banana jam were explored,through the analysis of data repeatability and viscosity response curve,the optimum test conditions were selected. The results showed that under same test speed the hardness,viscous force,adhesion of banana jam measured by conical probe,blade probe,spherical probe and cylindrical probe were successively increased respectively. Hardness,viscous force,adhesion of cylindrical probe were significantly higher than that of other probes,and the three indicators were improved with the increase of test speed. The total dispersion degree of hardness,viscous force and adhesion was cylindrical probe < blade probe < spherical probe < conical probe. Cylindrical probe with 1 mm/s had the best repeatability curve,but the response to banana jam with gradient increase of xanthan gum and consistency of viscous force trend to viscosity measured by viscometer of 5 mm/s were better. After comprehensive comparison,cylindrical probe with 5 mm/s was selected as the optimal testing condition.