Evaluation of the physiological response of shredded Galega kale under low oxygen and high carbon dioxide concentrations

• Type: Article in International Conference Proceedings Book
• Date: 2003

Authors

Fonseca, SC (Author) Other; Oliveira, FAR (Author) Other; Brecht, JK (Author) Other; Chau, KV (Author) Other

Conference proceedings International

Title: PROCEEDINGS OF THE 8TH INTERNATIONAL CONTROLLED ATMOSPHERE RESEARCH CONFERENCE, VOLS I AND II

Pages: 389-391

8th International Controlled Atmosphere Research Conference (CA2001)

ROTTERDAM, NETHERLANDS, JUL 08-13, 2001

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 2 Citations

Other information

Authenticus ID: P-000-KF0

DOI: 10.17660/actahortic.2003.600.56

Abstract (EN): The high perishability of fresh-cut products requires the use of preservation techniques along the distribution chain. Refrigeration and modified atmosphere packaging (MAP) are important postharvest techniques in the extension of produce shelf life. Shredded Galega kale (Brassica oleracea var. acephala) is a fresh-cut vegetable of special interest in the Portuguese market. Potential benefits and risks of low O-2 and high CO2 concentrations in fresh shredded Galega kale should be addressed before the commercial application of MAP. Respiration rate, sensory attributes, and colour alterations, in addition to water, chlorophyll, and ascorbic acid contents were monitored in shredded Galega kale during storage at 20 degreesC under different atmospheres. Low O-2 tolerance (1, 2, 3 or 21% v/v O-2 without CO2) was tested and it was concluded that quality retention improved with reduced 02 concentration and no induction of anaerobic respiration was detected. High CO2 tolerance (0, 10, 15, or 20% v/v CO2 plus 21% v/v O-2) was also tested. Storage under high CO2 concentration extended the product shelf life and no symptoms of CO2 injury were detected. Finally, combinations of low O-2 and high CO2 (1 or 2% v/v O-2 plus 15 or 20% v/v CO2 and air as control) were analysed. No differences were observed among the different concentrations tested in this range. An atmosphere of 1-2% v/v O-2 Plus 15-20% v/v CO2 will extend the shelf life of shredded Galega kale at 20 degreesC to 4 days, compared to 2 days in air storage.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3