Objectif The objective is to identify and assess a range of natural antimicrobial systems for their potential as a novel means of extending the safety and improving the quality of food.Research was carried out to identify and assess a range of natural antimicrobial systems for their potential as a means of extending the safety and improving the quality of food.A wide range of lactic acid bacteria from cheese, other milk and dairy sources, meat, fruit and vegetables were screened. Antimicrobial bacteriocin activity was determined against food spoilage and pathogenic organisms such as Pseudomonas fraqi, Staphylococcus aureus, Listeria innocua and Clostridium tyrobutyricum.A study took place of 5 classes of natural antimicrobials from animal and plant sources. 3 of these were tested against 9 target organisms, 4 moulds, 1 yeast and 4 bacteria, while the last 2 were tested against the yeast and moulds and 7 specific spoilage yeasts from beverages. 3 classes of compounds showed promise for further studies (chitosan, lyticase and a cell wall degrading enzyme preparation).There has been an initial study of microbial resistance to the inhibitory action of oleuropein, a phenolic glycoside from olives. This was coupled wth studies of the antimicrobial effect of oleuropein and phenolic extracts from Greek tea and herbs, on Staphylococcus aureus at different temperatures and pH values.Phenolic extracts from olives and tea delayed the growth of Staphylococcus aureus and reduced the amount of toxin produced. Herb extracts had variable inhibiting effects and toxin production was lower in the nonfat milk. Oleuropein had an increasing effect as the inoculum size decreased and was less effective at a lower pH.Finally, there has been a study of the fate of Salmonella enteriditis in food systems, alone and in conjunction with Lactobacillus fructivorum or Zygosaccharomyces baillii, when challenged with natural antimicrobial agents such as mustard, garlic and pepper at various temperatures and pH values.More specifically, the content and activity of natural antimicrobial agents in plant, animal and microbial systems will be assessed. The ease of extraction, purification and their antimicrobial effectiveness will be examined. The activity of the new antimicrobials will be tested individually, as well as in combination with traditional preservation techniques, against food spoilage and poisoning organisms in laboratory media and foods. The study will also examine technological aspects of antimicrobial production in relation to the quality of the end product, and the environmental impact of the process. Champ scientifique natural scienceschemical sciencesorganic chemistryorganic acidsnatural sciencesbiological sciencesmicrobiologybacteriologyagricultural sciencesagriculture, forestry, and fisheriesagriculturehorticulturefruit growingengineering and technologyother engineering and technologiesfood technologyfood safetyagricultural sciencesagriculture, forestry, and fisheriesagriculturehorticulturevegetable growing Programme(s) FP2-FLAIR - Multiannual research and development programme (EEC) in food science and technology (FLAIR), 1989-1993 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur LEATHERHEAD INTERNATIONAL LIMITED Contribution de l’UE Aucune donnée Adresse Randalls Road KT22 7RY LEATHERHEAD Royaume-Uni Voir sur la carte Coût total Aucune donnée Participants (8) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire ADRIA France Contribution de l’UE Aucune donnée Adresse 6 Rue de L'Universite, BP 313 29191 Quimper Voir sur la carte Coût total Aucune donnée Eleourgiki Grèce Contribution de l’UE Aucune donnée Adresse Piraeus Street 37-39 10553 Athens Voir sur la carte Coût total Aucune donnée ITG France Contribution de l’UE Aucune donnée Adresse 2 avenue du Champ de Foire 01000 Bourg-en-Bresse Voir sur la carte Coût total Aucune donnée Institute of Technology of Agricultural Products Grèce Contribution de l’UE Aucune donnée Adresse 1 S. Venizelou - Lycovrisi 14123 Athens Voir sur la carte Coût total Aucune donnée UNIVERSITY OF BATH Royaume-Uni Contribution de l’UE Aucune donnée Adresse Claverton Down BA2 7AY BATH Voir sur la carte Coût total Aucune donnée Unilever UK Central Resources Ltd Royaume-Uni Contribution de l’UE Aucune donnée Adresse Colworth House MK44 1LQ Sharnbrook Voir sur la carte Coût total Aucune donnée Union of Citrus Producers Island of Crete Grèce Contribution de l’UE Aucune donnée Adresse 1 Artemisias Avenue - N. Alikarnassos 71110 Heraklion Voir sur la carte Coût total Aucune donnée University College Cork Irlande Contribution de l’UE Aucune donnée Adresse Western Road Cork Voir sur la carte Coût total Aucune donnée
