Permeation of Volatile Organic Compounds Through Plastic Bottles and Closures in the Beverage Industry
MBAA TQ vol. 44, no. 3, 2007, pp.
190-197 |
VIEW ARTICLE Martin Orzinski (1), Alexander Wuertz (2), Leif-A.
Garbe (1,2), and Jan Schneider (3). 1. Research Institute for
Engineering and Packaging in the Beverage Industry, VLB Berlin,
Seestrasse 13, D-13353 Berlin, Germany. 2. Technical University of
Berlin, Strasse des 17.Juni 135, D-10623 Berlin, Germany. 3. University
of Applied Science Lippe and H�xter, Liebigstrasse 87, D-32657 Lemgo,
Germany.
Abstract
Along with the advantages of plastic bottles, there is the problem
of plastic�s inherent permeability to gases and volatile organic compounds
(VOCs). Although there are no data available on measurement of VOC
permeation through plastic bottles and contamination of beverages, novel
methods for the measurement of VOCs have been developed. This paper
describes a new apparatus that enables the exposure of bottles in an
environment that is enriched with a defined concentration of gases and
compounds. The research results indicate that the different barrier
systems of plastic bottles do no have sufficient safeguards against the
permeation of VOCs from the atmosphere into the analyzed liquid.
Keywords: barrier, closure, permeation, PET, plastic bottle,
volatile organic compounds (VOC)
S�ntesis
Si bien tienen grandes ventajas las botellas pl�sticas, tambi�n hay
que contar con los problemas inherentes a los pl�sticos, es decir su
permeabilidad a gases y a compuestos org�nicos vol�tiles (VOC) No existen
datos aun sobre la medici�n de la permeabilidad de VOC a trav�s de
botellas pl�sticas y la consiguiente contaminaci�n de bebidas, pero s� se
han desarrollado m�todos innovativos para la medici�n de VOC. Aqu� se
describe un nuevo aparato que permite exponer botellas a un entorno
enriquecido con una concentraci�n dada de gases y compuestos. Los
resultados del estudio demuestran que los diferentes sistemas de barreras
para botellas pl�sticas no tienen la suficiente resistencia a la
permeabilidad de los VOC de la atm�sfera al liquido en las botellas.
Palabras claves: barrera, botella pl�stica, cierre, compuestos
org�ni�cos vol�tiles (VOC), permeabilidad, PET
