Researchers have been working for a long time to reduce the germ load of perishable foodstuffs using natural antimicrobial additives. Essential oils, such as lime, gooseberry or thyme, have already produced good results in this area. But they also have certain disadvantages: they have to be applied directly to the foodstuffs and thus affect their sensory properties.
In the presentation we will introduce a new cellulose non-woven material based on the lyocell process. The process allows relatively large amounts of additives to be homogeneously, effectively and directly incorporated into the cellulose in the dissolving step. In the development we added specific natural based polymers to the cellulose matrix that act as bonding agents for active natural ingredients.
As a practical example a non-woven material for perishable foodstuffs in which an Alchemilla extract is permanently incorporated will be presented. The overall migration rate of the material was significantly lower than 10 mg/dm2 and also the migration of specific substance markers confirm the permanent bonding. Nevertheless the bacterial growth on the fiber surface was hindered.
The development could be also utilized in bioactive medical textiles, for instance, where contamination in material surfaces must be safely avoided. Another promising application of this research could be in filtering materials used for waste water treatment.