Tracking of the viability of Stenotrophomonas maltophilia bacteria population in polyvinylalcohol nanofiber webs by positron annihilation lifetime spectroscopy

Attila Vajdai, Barnabás Szabó, Károly Süvegh, Romána Zelkó, Gabriella Újhelyi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Polyvinylalcohol (PVA) fiber web containing embedded bacteria was prepared by electrospinning technique. From the point of the complex functionality of such potential delivery systems, it will be of impact how bacteria can survive in such artificial biotopes. The present study suggests a possible fast method for the tracking of the viability of the embedded bacteria based on the changes of the supramolecular structure of the polymeric delivery system caused by the metabolic product of the bacteria. Positron annihilation lifetime spectroscopy (PALS) was applied to track the free volume changes of the system in the course of storage. The PALS method sensitively detected the free volume changes, thus the viability of the bacteria in the polymeric fiber web.

Original languageEnglish
Pages (from-to)135-137
Number of pages3
JournalInternational Journal of Pharmaceutics
Volume429
Issue number1-2
DOIs
Publication statusPublished - Jun 15 2012

Keywords

  • Bacteria
  • Electrospinning
  • PVA fiber web
  • Positron annihilation lifetime spectroscopy
  • Viability

ASJC Scopus subject areas

  • Pharmaceutical Science

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