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Preservation Technologies for Fresh Fruits and Vegetables in Tunisia: Cold storage, MAP and CAS

Preservation Technologies for Fresh Fruits and Vegetables in Tunisia: Cold storage, MAP and CAS. _______________________ Dr. Mohsen ACHOUR Higher Institute of Food Industries of Tunis (ESIAT, Tunisia) Istanbul,Turkey January 17-20, 2002 ________________________________________

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Preservation Technologies for Fresh Fruits and Vegetables in Tunisia: Cold storage, MAP and CAS

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  1. Preservation Technologies for Fresh Fruits and Vegetables in Tunisia: Cold storage, MAP and CAS _______________________ Dr. Mohsen ACHOUR Higher Institute of Food Industries of Tunis (ESIAT, Tunisia) Istanbul,Turkey January 17-20, 2002 ________________________________________ Thematic network: Improved Quality Management in the Euro-Mediterranean Fruits and Vegetables Processing Industry

  2. Production of Fresh Vegetables: (1000 T)

  3. Production of Fresh Vegetables: (1000 T)

  4. Production of Fresh Fruits: (1000 T)

  5. Production of Fresh Fruits: (1000 T)

  6. Exports of Fresh Vegetables (Tons)

  7. Exports of Fresh Fruits(Tons)

  8. Imports of Fresh Fruits & Vegetables(Tons)

  9. Fresh Fruits and Vegetables: • Conditioning Companies: • Totally exporting: 21 units, 5780 jobs • Non totally exporting: 31 units, 4382 jobs • National consumption: • Fresh Vegetables: avg. 80 kg/person/year • Processed Vegetables: avg. 60 kg/person/year • Fresh Fruits: avg. 50 kg/person/year • Strategic products • Potatoes, tomatoes • Olives, citrus, dates, apples, pears, grapes

  10. Cold Storage of Fruits and Vegetables: Cold chain System, Refrigerated transport • Cold chain system of all fresh products: • 380 000 m3 in refrigeration • 125 000 m3 in freezing tunnels • Main products: • Fruits and vegetables: 152 units, 187 000 m3 • Potatoes: 16 units, 57 000 m3 • Dates: 62 units, 65 000 m3

  11. Controlled Atmosphere Storage (CAS) of Selected Fruits and Vegetables • 3 main units: total capacity of about 3000 tons, located at the northern part of Tunisia • Selected products: apples, pears, oranges and bananas • Destination: exports, local market during off season

  12. Modified Atmosphere Storage (MAP) of Selected Fruits and Vegetables • Number of units: very few and limited to individual efforts • Selected products: Tunisian sweets, dates for exports, green salads for super markets

  13. Related National and EU Regulations • Local standards concerning cold storage • Absence of local standards for MAP and CAS • Usage of EU and FDA regulations for exported products

  14. Environmental Impact of Preservation Techniques of Fruits and Vegetables • Replacing progressively R12 and R502 by other products on cold storage installations • No big environmental problems

  15. Technical Problems of the Industrial Companies and their Needs of Assistance • Quality of raw material: • volume, • consistency and • quality level • Marketing strategy • Recent experience with CAS technology • Absence of local legislation in the subject • Cost of cold storage vs. product marketability

  16. Quality and Customer Acceptability • Negative response towards cold storage of fruits and vegetables ... Lesser quality especially towards end of shelf life • High value products ... Still acceptable during off season

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