Cultivars Differences in Keeping Quality and Bioactive ConstituentsJournal: JOURNAL OF ADVANCES IN BIOTECHNOLOGY (Vol.4, No. 1)
Publication Date: 2014-10-25
Authors : Zoran S. Ilic; Natasa Mirecki; Elazar Fallik;
Page : 313-318
Keywords : Pepper; Cultivars; Storage; Quality; Antioxidant;
The aims of this research were to evaluate the keeping quality (water loss, firmness, decay incidence) and bioactive constituents (vitamin C, antioxidant activity) of three commercial bell pepper cultivars (Selika-red, Dynamo-yellow and Sympathy-orange color) held for 21 days (d) storage at 7 oC and market simulation (3 d at 20 oC). Cultivars type significantly influenced fruit quality in bell pepper after prolonged storage. The low skin wax content (0.6 ng?cm-2) and thin pericarp tissue (6.5 mm) in ‘Sympathy’ appeared to have contributed greatly to the high weight loss (5.2%), resulting in very soft fruits (4 mm), high decay incidence (20%) and lowest value in general appearance (2.5) among to the three cultivars. After 21 d storage at 7 oC plus 3 d at 20 oC content of ascorbic acid showed a insignificant increase in all cultivars. Hydrophilic antioxidant activity (HAA) remains practically unchanged after 3 weeks at 7 oC (between 2 and 5%) from the initial value. Total antioxidant activity (TAA) increases only in red pepper 'Selika' (6.07 ?mol TE/g fr.wt.) and this increase is mainly because of changes in the lipophilic antioxidant activity (LAA - from 0.84 in harvest time increased to 2.31 ?mol TE/g fr.wt. after storage).
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