Sterilization of polymer foils with dielectric barrier discharges at atmospheric pressure

被引：97

作者：

Heise, M

Neff, W

Franken, O

Muranyi, P

Wunderlich, J

机构：

[1] Fraunhofer Inst Lasertech, D-52074 Aachen, Germany

[2] Rhein Westfal TH Aachen, Lehrstuhl Lasertech, D-5100 Aachen, Germany

[3] Fraunhofer Inst Verfahrenstech & Verpackung, Freising Weihenstephan, Germany

来源：

PLASMAS AND POLYMERS | 2004年 / 9卷 / 01期

关键词：

dielectric barrier discharge; plasma; UV; sterilization; spores;

D O I：

10.1023/B:PAPO.0000039814.70172.c0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The emission of UV light as well as chemical reaction in plasmas allow them to be used for decontamination of food packaging. Sterilization efficiency of different dielectric barrier discharge (DBD) setups at atmospheric pressure was investigated for spores of B. subtilis and A. niger sprayed onto PET foils. In normal DBDs the efficiency of spore reduction in different gases (nitrogen, argon, synthetic air) can be related to the UV spectra of these gases in the discharge. With special so-called cascaded dielectric barrier discharges (CDBDs) a fast reduction of viable cells by more than four orders of magnitude is possible within few seconds, even for UV resistant cells. The sealing properties of commonly used PE-PET-laminate can be maintained in CDBD which is not observed for single-gap DBD.

引用

页码：23 / 33

页数：11

共 17 条

[1] Bacterial decontamination using ambient pressure nonthermal discharges [J].