Acoustic and sensory measurements of different ripeness of apples : 2.
Symoneaux R.; Royer G.; Madieta E. and Jourjon F.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.122
2004
บทคัดย่อ
Acoustic and sensory measurements of different ripeness of apples : 2.
In first works realised by Symoneaux et al (2002), correlations between acoustic measurements (stiffness coefficient) and sensory evaluation by a trained panel were researched, studying the impact of a harvest’s date on apple quality. Relationships with other destructive measurements were also studies. Three different stages of ripeness were chosen. For each variety, apples were harvested one week before, on the optimal date itself (determined by an expert) and one week after. All of these apples were tested two weeks after harvesting. The later the apples were harvested, the lower the stiffness, touch resistance and crunchiness. on the contrary, sweetness and odour intensity increased. Significantly positive correlations were observed between stiffness and touch resistance and crunchiness.
In this experimentation, the same methodology were used, completed by the impact of the storage on apple quality. Acoustic, sensory and instrumental textural measurements were processed on each apple. Correlations were researched with all data and not only with averages by batch as last year. The high correlations between acoustic and textural measurements were confirmed. Stiffness seemed to be a good non-destructive parameter for measuring apple texture. The correlation’s methodology between sensory and instrumental measurements were also studied comparing results with all data and not just averages.