Internal quality parameters of 12 apple cultivars during storage
Abbas Bahari
Abstracts Book, 6th International Postharvest symposium, 8-12 April 2009, Antalya, Turkey. 256 pages.
2009
บทคัดย่อ
The investigations were carried out in one successive season (2007/2008)on 12 apple cultivars obtained from trees on the seedling rootstock, which were 12-15 years old. The apples were picked when their starch index reached the values from 5 to 7. Fruit samples were stored for 6 months in a common cold storage at 0 ±0.5°C and 90% relative humidity. At harvest and after 6 months of storage, firmness, titratable acidity (TA) and soluble solids concentration (SSC) and SSC/TA ratio were determined. Apples of the evaluated cultivars significantly differed in firmness and organic components content. After 6 months of storage high firmness, was characteristic for 'Fuji', 'Akhlamad mashad', 'Dir ras mashad', 'Vine sep', 'IRI3' and 'Northeran spy' apples. A high soluble solids content (> 15°Brix) was recorded in 'Velthi', 'Bele de boskope' and 'IRI1' and a high titratable acidity (>0.6%) in 'Bele de boskope' apples. The ratio of soluble solids to organic acids increased with storage time. After 6 month of storage a very high value of that ratio was found in 'Prime gold', 'IRI1' and 'Akhlamad mashad' (>60) and comparatively low (<30) in 'Bele de boskope', 'Granny Smith' and 'Vine sep'.