Tunisian republic

Ministry of Industry, Mines and Energy

Central Laboratory for Analysis and Testing

Dioxines

Laboratoire des dioxines

Chromatographe en phase gazeuse haute résolution couplé à un spectromètre de masse haute résolution (GCHRMS)

Residues of veterinary drugs

Veterinary drugs are used in farms for the health and growth of animals: cattle, poultry, fish, shrimp, bees, etc .

Antibiotic residues can be found in foodstuffs (meat, fish, milk, eggs and honey) obtained from these treated animals as a result of faulty practices such as non-compliance with the expectation or abuse of growth promoters.

Due to the potentially carcinogenic and toxic properties of antibiotic residues and their allergic potential, maximum residue limits (MRLs) have been set for pharmacologically active substances (Regulation (EU) No 37/2010 and its successive amendments) .

In the final food product, the molecule is either prohibited with zero tolerance or permitted up to a defined level, depending on its nature and destination.

Our skills :

  • New activity established 2 years ago
  • Use of validated method: Identification and quantification of chloramphenicol according to Decision (2002/657/EC) of the Official Journal of the European Communities.
  • Other molecules are under development

Type of Products:

  • Meat products (muscle)
  • Egg products (eggs...)
  • Dairy products (milk...)
  • Aquaculture products (fish meat, etc.)
 

Type of Analysis

Residues of veterinary medicinal products detected:

  • Chloramphenicol
  • Other molecules are under development

Equipment fleet: LC-MS-MS

 

Radioactive Elements

Radioactive contamination is the phenomenon that occurs when a radioactive product is deposited on an object or a being, or is ingested or inhaled by a being. Contamination can spread in the food chain (human and animal), than in others (pharmaceutical, industrial, etc.).

In the aftermath of the Chernobyl accident (1986), the national authorities responsible for technical import control took the decision to subject all imported food products to systematic control of the level of radioactive contamination. The LCAE has since been equipped with a NaI scintillation Gamma detector allowing the measurement of Cesium 137 and 134 contamination. New equipment has been added to the analytical park and now allows the measurement of two other radioactive elements (Cobalt 60 and Iodine 131) .

 

Type of Products:

  • Cereals and cereal products
  • Honey and honey substitute
  • Spices and herbs
  • Tea, Coffee
  • Cocoa and cocoa products and chocolate substitute
  • Dates, fruits and vegetables
  • Legumes, and dried fruits
  • Sugars
  • Juice and syrup
  • Dietary food products.
  • Animal feed
  • Raw materials

Type of Analysis:

 

  • Cesium 134: Cs134
  • Cesium 137: Cs137
  • Iode 131 : I131
  • Cobalt 60 : Co60
  • Other molecules are under development

Polycyclic Aromatic Hydrocarbons - HAP'S

Polycyclic aromatic hydrocarbons (PAHs) are chemical contaminants whose formation results from the incomplete combustion of organic products. These molecules are toxic to humans: some PAHs are carcinogenic and genotoxic.

The contamination of foodstuffs by polycyclic aromatic hydrocarbons (PAHs) can be of environmental origin (emission into the environment or pollution such as oil spills) but the major source of contamination of foodstuffs by PAHs is linked to treatment processes. heat of food (for example, cooking by grilling, smoking, etc.).

Benzo(a)pyrene (B(a)P) (used as a marker of food contamination by PAHs) and the sum of four specific substances (HAP4) are regulated in certain categories of foodstuffs by the decree of 13 May 2013 and Regulation (EU) No. 835/2011 amending Regulation (EC) No. 1881/2006

Our skills :

  • Experience of more than 10 years
  • Participation in the inter-laboratory comparison network: FAPAS since 2018
  • Regular monitoring of the quality of these results.

Type of Products:

  • Oils and fats
  • Smoked meats and smoked meat products
  • Muscular meat of smoked and unsmoked fish
  • Smoked and non-smoked fish products: Crustaceans, cephalopods, bivalve molluscs, etc.

Type of Analysis

  • Polycyclic aromatic hydrocarbons detected:
    • Benzo[a]pyrene
    • Benzo[b]fluornthene
    • Benz[a]anthracene
    • Chrysene
 

MYCOTOXINS

Mycotoxins are secondary metabolites with a toxic action on humans and animals. They are synthesized by fungi of the mold type (Aspergillus sp., Fusarium sp, etc.) in the fields or in the storage of foodstuffs. Cereals are the most affected, but fruits can also contain mycotoxins. Their presence in products intended for human consumption and animal feed can have an adverse impact on health such as carcinogenic and mutagenic effects and can also cause estrogenic, gastrointestinal and renal disorders.

The mycotoxins laboratory is thus able to search for and quantify the mycotoxins covered by the decree of May 13, 2013 setting the list of maximum limits for certain contaminants in foodstuffs and the methods for taking samples and analysis for official control and European regulations (EU 1881/2006, EU 401/2006 and EU 2002/32).

 

Our experiences:

  • The mycotoxins laboratory of the center of TUNIS has an experience of more than 20 years, it participates in the sanitary control of food products.
  • This activity is available at the two regional centers in SOUSSE and SFAX.
  • The laboratories participate in the networks of inter-laboratory comparisons: FAPAS and BIPEA since 2010
  • The mycotoxins laboratory has been accredited since 2019 by TUNAC, it regularly monitors the quality of the results using reference materials.

Type of Products:

The field of activity covers a wide variety of matrices intended for human and animal consumption:

  • Cereals and derivatives (wheat, barley, rice, maize, pasta, sorghum, etc.)
  • Oleaginous products and legumes (dried fruits, sesame seeds, peanuts, chickpeas, etc.)
  • Nuts and dried fruits (almonds, hazelnuts, pistachios, raisins, etc.)
  • Coffee
  • Cacao
  • Spices
  • Meat products
  • Milk and derivatives
  • Food for animals
 
 

Type of Analysis

The laboratory detects and quantifies many mycotoxins:

  • Aflatoxin B1, B2, G1, G2
  • Ochratoxin A
  • Zéaralenone
  • Aflatoxin M1

Park Equipment

The laboratory is equipped with two HPLC-Fluorescence chromatographs which makes it possible to reach the limits required by the regulations

Our skills :