EATING QUALITY OF GALA AND FUJI APPLES FROM MULTIPLE HARVESTS AND STORAGE DURATIONS

Citation
A. Plotto et al., EATING QUALITY OF GALA AND FUJI APPLES FROM MULTIPLE HARVESTS AND STORAGE DURATIONS, HortScience, 32(5), 1997, pp. 903-908
Citations number
19
Categorie Soggetti
Horticulture
Journal title
ISSN journal
00185345
Volume
32
Issue
5
Year of publication
1997
Pages
903 - 908
Database
ISI
SICI code
0018-5345(1997)32:5<903:EQOGAF>2.0.ZU;2-X
Abstract
Eating quality of 'Gala' and 'Fuji' apples (Malus domestica Borkh,) fr om multiple harvests and storage durations was assessed using an untra ined consumer panel. Apples were harvested at weekly intervals for 6 w eeks and stored in air, Changes; due to harvest maturity and storage f or overall liking (OL), sweetness, tartness, firmness, and flavor inte nsity were evaluated over 8 months. A multivariate factor analysis rev ealed multicollinearity for OL, sweetness, and flavor intensity rating s in both cultivars, These attributes had the highest loadings in the first factor, explaining 51% and 52% of the variance of 'Gala' and 'Fu ji' data sets, respectively, and were interpreted as a quality factor, Tartness and firmness had the highest loadings in the second factor f or 'Gala', explaining an additional 23% of the variability and reducin g that cultivar's data set to two factors, For 'Fuji', however, tartne ss and firmness were independent and included in factors 2 and 3, resp ectively, Factors 2 and 3 were interpreted as maturity factors, which explained 23% and 12% of the variance, The plots of the mean factor sc ores provided a multivariate technique to illustrate that panelists co uld differentiate between the stages of maturity of apples, Canonical correlations were calculated between the sensory and instrumental data , Only firmness measurements were correlated with sensory ratings for firmness (r = 0.53 and 0.44 for 'Gala' and 'Fuji', respectively).