Home / Knowledge / News / Textiles / Viral bioindicator laundering process tested for virucidal efficacy
Viral bioindicator laundering process tested for virucidal efficacy
28
Aug '09
In May 2009, the Institute for Hygiene and Biotechnology (IHB) at the Hohenstein Institute first introduced a new way to test disinfectant laundering processes for their virucidal efficacy by using a viral bioindicator based on the bacteriophage MS2. Through further modification of this testing method and trials carried out using a commercial, conventional process listed by the RKI at a laundry, the researchers at Hohenstein have successfully proven that viral bioindicators can be used to assess objectively the virucidal efficacy of disinfectant laundering processes not only in simulated laundering processes, but also under actual, field conditions. Starting now, this new testing method allows the IHB at the Hohenstein Institute to offer an effective quality assurance tool for the detergent industry and laundering operations. Beyond that, in view of the increasing number of cases of viral illness, an important, additional tool has also been made available for preventive health care.

The viral bioindicator is, therefore, a novelty in the area of applied hygiene. Due to the lack of a suitable testing method, there have been until today no criteria for monitoring anti-viral (virucidal) efficacy of disinfectant laundering processes in the field. Using a method analogous to the standard techniques used by the German Association for Hygiene and Microbiology (Deutsche Gesellschaft für Hygiene und Mikrobiologie (DGHM)) to assess the bactericidal efficacy of chemical disinfectant processes, the IHB in May carried out laundering trials with test textile swatches contaminated with the bacteriophage MS2 (a pathogen similar to Norovirus). In laboratory conditions similar to those in the field, it was demonstrated that the bioindicators containing bacteriophages such as MS2 are suitable for testing and proving the virucidal efficacy of disinfectant laundering.

The Hohenstein Institute's newly developed method is even appropriate for suitability testing of disinfectant laundering processes in field conditions in accordance with the Sections 4.4.3 and 6.4 of the guidelines of the Commission for Hospital Hygiene and Applied Infection Control of the Robert Koch Institute. Upon successful completion of this special suitability test, it is incumbent upon the consultant in charge of hygiene at the IHB to recognise the disinfectant efficacy of the laundering process.

This means that in future it will be possible to use a viral bioindicator to test reprocessing of Sector B (effective against viruses) laundry in the field in a way comparable to the procedure for quality assurance currently used for bactericidal laundry (Sector A).

Laundry detergent manufacturer CHT R. Beitlich GmbH agreed to become a pilot customer and became the first to use viral bioindicators in practice. Laundering tests were carried out at the facility of Busch Textilservice GmbH & Co. KG in Bärenbach. In this field trial, bioindicators were applied in three independent, tunnel washer laundering cycles. At the same time, all process parameters were monitored, as well as sampling washwater for presence of the test virus. In experiments carried out under field conditions, CHT R. Beitlich GmbH's BEICLEAN HWA/BEIBLEACH WP35 process listed by the RKI achieved perfect results. As a result, the virucidal efficacy of the listed process could be confirmed in testing under actual field conditions.

Hohenstein Institute


Must ReadView All

Sri Lanka reduces VAT on imported fabric to 5%

Textiles | On 24th Sep 2018

Sri Lanka reduces VAT on imported fabric to 5%

Considering the requests made by the stakeholders in the fabric...

E-com firms in India to deduct 1% TCS under GST from Oct 1

Apparel/Garments | On 24th Sep 2018

E-com firms in India to deduct 1% TCS under GST from Oct 1

E-commerce companies in India will have to deduct 1 per cent tax...

Courtesy: Andritz

Textiles | On 24th Sep 2018

'Strength of economy, demographics drive nonwovens demand'

The strength of the economy and demographic trends are the main...

Interviews View All

Karan Toshniwal, Orange O Tec

Karan Toshniwal
Orange O Tec

Contemporary industry is paying more and more attention to the...

Luke Otten, Wigwam Mills Inc

Luke Otten
Wigwam Mills Inc

Wigwam aims to recycle discarded yarn that doesn’t make it through the...

Pinkesh Jain, Everflow Petrofils Ltd

Pinkesh Jain
Everflow Petrofils Ltd

‘An innovative technology which India needs desperately is the...

Franco Ravazzi,

Franco Ravazzi

Italy-based Tessimenti E Orditi Tinti (T.O.T SRL) specialises in stocking...

C Dhandayuthapani,

C Dhandayuthapani

MAG Solvics Private Limited was established in 1991 to design and develop...

Harmeet Singh,

Harmeet Singh

New Delhi-based Jogindra Industries Private Limited provides an assortment ...

Marten Alkhagen, Swerea IVF AB

Marten Alkhagen
Swerea IVF AB

Marten Alkhagen, Senior Scientist - Nonwoven and Technical Textiles of...

Silke Brand-Kirsch, Schlegel und Partner

Silke Brand-Kirsch
Schlegel und Partner

Silke Brand-Kirsch, executive partner of Schlegel und Partner, a leading...

Mohammad Hassan, Biax Fiberfilm

Mohammad Hassan
Biax Fiberfilm

About one in every 20 patients picks up an infection while hospitalised....

Sanjukta Dutta, Sanjukta's Studio

Sanjukta Dutta
Sanjukta's Studio

<b>Sanjukta Dutta</b> creates unique garments by clubbing prints of...

Silvia Venturini Fendi, Fendi s.r.l

Silvia Venturini Fendi
Fendi s.r.l

"Yes, my confidence and positive attitude are my strengths and should be...

Mike Hoffman, Gildan Activewear SRL

Mike Hoffman
Gildan Activewear SRL

Gildan Activewear, a manufacturer and marketer of branded clothing and...

Press Release

Press Release

Letter to Editor

Letter to Editor

RSS Feed

RSS Feed

Submit your press release on


editorial@fibre2fashion.com

Letter To Editor






(Max. 8000 char.)

Search Companies





SEARCH

Leave your Comments


September 2018

Subscribe today and get the latest update on Textiles, Fashion, Apparel and so on.

news category


Related Categories:

Advanced Search