HIGH PRODUCTION OF XANTHAN GUM BY A STRAIN OF XANTHOMONAS-CAMPESTRIS CONJUGATED WITH LACTOCOCCUS-LACTIS

Authors
EKATERINIADOU LV PAPOUTSOPOULOU SV KYRIAKIDIS DA
Citation
Lv. Ekateriniadou et al., HIGH PRODUCTION OF XANTHAN GUM BY A STRAIN OF XANTHOMONAS-CAMPESTRIS CONJUGATED WITH LACTOCOCCUS-LACTIS, Biotechnology letters, 16(5), 1994, pp. 517-522
Citations number
19
Categorie Soggetti
Biothechnology & Applied Migrobiology
Journal title
Biotechnology letters → ACNP
ISSN journal
01415492
Volume
16
Issue
5
Year of publication
1994
Pages
517 - 522
Database
ISI
SICI code
0141-5492(1994)16:5<517:HPOXGB>2.0.ZU;2-Z
Abstract
Plasmid pNZ521, containing phospho-beta-galactosidase, maturation prot ein and proteinase P genes was conjugally transferred for the first ti me from L.lactis into X.campestris XLM1.After 30 generations 67% of th e tested colonies were resistant to chloramphenicol in the transconjug ant proteinase activity appeared in the growth medium, whereas in L.la ctis MG1820 it was extracted from the cell walt Proteinase activity an d production of xanthan gum were studied in different concentrations o f whey. Xanthan gum production was found much higher in all cultures w ith the transconjugant strain XLM1521.