Correlation between Texture-Analyzer Parameters and Physical Properties Measurement of Peanut
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Abstract:
In order to clarify the correlation between texture parameters and physical properties of peanut, two peanut varieties with apparent differences were selected as samples in this study. The influence of the texture-analyzer parameters on the physical properties of peanut samples was investigated by regulating the critical control points of the texture. The results showed that inappropriate texture-analyzer parameters could significantly affect the physical properties of peanut samples and reduce the accuracy of test results. For example, the compression shape variable had a significant influence on the hardness, elasticity, cohesion, chewiness and other texture properties of peanut. However, the compression shape variable had a small influence when it was between 35% and 50%. The detection speed had a significant negative correlation with the brittleness of peanut samples. The brittleness detection results were relatively stable when the test speed was 40 mm/min. The stability of shear force results would be seriously affected by the higher shear rate, which resulted in an increase in systematic errors. Therefore, the better stable shear force data could be obtained when the controlled shear rate was less than 60 mm/min. The results of physical properties were different between the different types of peanuts. The systematic errors could be reduced by using suitable determination parameters and the physical property differences between samples were better represented. As a result, when the physical properties of peanut samples were determined, the stable data could be obtained by selecting parameters of compression deformation ratio 35%~50%, test speed 40 mm/min and the shear rate of no more than 60 mm/min, which had little effect on the physical determination of peanut.
