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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
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

fresh fruits and vegetables
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
cold storage of fruits and vegetables cold chain system refrigerated transport
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
controlled atmosphere storage cas of selected fruits and vegetables
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
modified atmosphere storage map of selected fruits and vegetables
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
related national and eu regulations
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
environmental impact of preservation techniques of fruits and vegetables
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
technical problems of the industrial companies and their needs of assistance
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
quality and customer acceptability
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