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VOLATILE COMPOSITION AND QUALITY OF FRESH-CUT CUCUMIS MELO VAR. CANTALOUPENSIS AND INODORUS AS AFFECTED BY MODIFIED AND CONTROLLED ATMOSPHERES
- Source :
- Acta Horticulturae. :603-609
- Publication Year :
- 2010
- Publisher :
- International Society for Horticultural Science (ISHS), 2010.
-
Abstract
- Cantaloupensis melons are aromatic and fast senescing, whereas Inodorus have less odor and are slower senescing. Modified atmosphere packaging (MAP) is used to reduce respiration rate and extend shelf-life but may alter the synthesis of volatile compounds. We assessed the effects of passive MAP and controlled atmosphere (CA; 5 kPa O 2 + 10 kPa CO 2 ) upon quality and volatile production by fresh-cut 'Cantaloupe' and 'Honeydew' melons, stored at 5°C for 14 days. O 2 concentration inside the MAP packages decreased during the 14 days, to 11.1 and 14.2 kPa, in 'Cantaloupe' and 'Honeydew', respectively. CO 2 levels increased to 11.3 and 7.9 kPa during storage, for 'Cantaloupe' and 'Honeydew', respectively. In MAP, during the first 4 days of storage, cantaloupe cubes softened at a higher rate (2.0 N.day -1 ) than 'Honeydew' cubes (0.9 N.day -1 ). Conversely in CA, fresh-cut 'Honeydew' softened faster (1.9 N.day -1 ) than fresh-cut 'Cantaloupe' (0.9 N.day -1 ) which, softened faster between days 4 and 7 (2.1 N.day -1 ). Initial 'Cantaloupe' respiration was 17.5 ml CO 2 .kg -1 .h -1 , which increased to 63.8 and 43.4 ml CO 2 .kg -1 .h - 1 when stored in CA and MAP, respectively. Initial respiration of 'Honeydew' melon was 7.7 ml CO 2 .kg -1 .h -1 and increased to 55.5 and 30.0 ml CO 2 .kg -1 .h -1 when stored in CA and MAP, respectively. Volatile compounds that are known to be flavor-important in melons, were extracted using Stir Bar Sorptive Extraction (SBSE) and quantified via GC-MS. The production of acetate esters increased in both melons stored in MAP, but decreased in 'Cantaloupe' under CA conditions. Non-acetate esters increased in both cultivars and storage conditions. Alcohols, initially more abundant in 'Honeydew', underwent a decrease throughout storage. Aldehydes, initially more abundant in 'Cantaloupe', decreased in both melons for MAP but not in 'Honeydew' stored in CA. Lower O 2 availability in fresh-cut fruit, stored under CA conditions utilized in this experiment, likely suppressed some of the acetate esters relevant to the aroma of fresh-cut melon.
Details
- ISSN :
- 24066168 and 05677572
- Database :
- OpenAIRE
- Journal :
- Acta Horticulturae
- Accession number :
- edsair.doi.dedup.....1c80bb1ba1e4d4cb6fe2e88a104ed647
- Full Text :
- https://doi.org/10.17660/actahortic.2010.877.79