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Schutz von in Beuteln abgepackten Lebensmitteln vor Insektenbefall u. a. beim Export durch alternative Klebetechniken, neuartige Faltschachtelkonstruktionen und Einsatz repellierender Naturstoffe

: Hennlich, W.; Rafler, G.; Reichmuth, C.; Wudtke, A.
: Arbeitsgemeinschaft Industrieller Forschungsvereinigungen e.V. -AIF-, Köln; Biologische Bundesanstalt für Land- und Forstwirtschaft, Institut für Vorratsschutz; Fraunhofer-Institut für Angewandte Polymerforschung -IAP-, Teltow; Fraunhofer-Institut für Verfahrenstechnik und Verpackung -IVV-, Freising

Köln: AiF, 1998, 31 S. u. Anhang
Fraunhofer IVV ()

The new developments of the package types (Ruf carton box, Crystal Airbox and VG Nicolaus Peeltop system) as well as the new bag of Mühlers Mühle were main object of the investigations and proved to be rather effective. Especially the Ruf carton boxes, wich are produced on a Nordson machine fulfill the requirements of an insect and dust proof box. It is preparec without patches or other supporting aids. The Crystal Aibox contains patches. Besides the pelltop system showed this patented sealing procedure the best results. Within four test runs on different machines nearly all tested packages resistes the young larvae of Plodia interpunctella. The packages with peeltop system of VG Nicolaus were as the only water and pressure tight and insect proof. This is achieved by glueing a plastic membrane underneath the overlapping flaps of the package. Similar as with the Espresso system with a paper mebrane of the Effem company, insects may hide underneath the overlapping flapps outside the inte riour of the box. One bag series was tested as new development and found to be improved. For the first time, all tested rice packages of Müllers Mühle could not be penetrated by larvae. The test series with etheric oils ended without ab breakthrough. The tested chemicals showed either toxic or none effects whatsoever towards the tested insect larvae. An orienting experiment with Diethyl-toluamid reveald some hints as to weather chemical substances can be mixed up with the glue to prevent later invasion of larvae through crevices between the flaps for a while. More sceening and testing is necessary to identify substances and dosages. This should further be combined with micro encapsulation as a means of the right formulation for slow release of the proper repellent amounts.