EFFICIENCY OF NEW POSTHARVEST TECHNIQUES (CO2 SHOCKS, FILM PACKAGING) AT THE INDUSTRIAL LEVEL

EFFICIENCY OF NEW POSTHARVEST TECHNIQUES (CO₂ SHOCKS, FILM PACKAGING) AT THE INDUSTRIAL LEVEL

Authors:	J. Raynal, M. Baccaunaud
Keywords:	kiwifruit, asparagus, quality, storage
Abstract: Experiments with CO₂ shocks were set up with kiwifruit to reduce the application costs as well as to increase the storage time of kiwifruit in agreement with classical cold storage. Results show that 15% CO₂ applied every three weeks then every two weeks until the end of storage, gave the best results in accordance to the quality of the fruit; only 1.7% of fruits were damaged after 153 days of storage. Tests were set up for application of plastic films on fruit and vegetable in the same conditions used in a practical way. Tests done with kiwifruit show that only two packaging conditions are the most interesting for a better qualitative maintenance after cold storage : the packaging with retracted polyolefine film and heat sealable containers with 15 to 20% CO₂ and 2 to 6% O₂. Tests done with asparagus show that it is possible to store asparagus at an industrial level for about 15 days without any damage of aspect and flavour in optimal conditions (2°C, HR close to 90%) and under plastic film (polypropylene with laser holes) in where permeability is closed to 10000cc/m²/24h.
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