Correlations between Physico-chemical Characteristics and Sensory Quality of Fresh Apple Juice

Abstract

Abstract: The aim of the present study was to explore the correlations between physico-chemical characteristics and sensory measures of fresh apple juice from 9 varieties. The results showed that: 1) there were significant correlations among partial physico-chemical characteristics of apple juice; 2) significant correlations were found between physicochemical characteristics and sensory measures of apple juice. The fruity aroma of apple juice was significantly correlated with its pH and titratable acidity. A positive correlation was observed between the faint scent and color value or total sugar content. The astringent taste had a positive correlation with the titratable acidity total phenol content or buffer capacity, but revealed a negative correlation with the pH, sugar/acid ratio or solid/acid ratio. The acidic taste was correlated with the pH, total sugar content, titratable acidity, buffer capacity, sugar/acid ratio or solid/acid ratio. Moreover, the sweet taste presented a correlation with soluble solid content (SSC), titratable acidity, buffer capacity or solid/acid ratio; 3)the developed regression model for taste evaluation of apple juice was significant, indicating that there are good correlations between physico-chemical characteristics and sensory measures of fresh apple juice. Thus physicochemical characteristics can be measures for predictive analysis of the sensory quality of fresh apple juice.

Key words: fresh apple juice, physico-chemical properties, sennsory quality, correlation

CLC Number:

References

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