Production and Regeneration of Lactobacillus casei Protoplasts.

Abstract:

:Methods for the production and regeneration of Lactobacillus casei protoplasts are described. Protoplasts of L. casei strains were obtained by treatment with mutanolysin or with mutanolysin and lysozyme together in a protoplast formation buffer containing 0.02 M HEPES (N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid) (pH 7.0), 1 mM MgCl(2), 0.5% gelatin, and 0.3 M raffinose. Cells were regenerated on a complex medium supplemented with bovine serum albumin, MgCl(2), CaCl(2), gelatin, and raffinose. Lengthy digestion with lytic enzymes inhibited the capacity of protoplasts to regenerate. The optimum conditions of protoplast formation varied from strain to strain. Using predetermined optimal conditions it was possible to prepare protoplasts of several L. casei strains and regenerate them with 10 to 40% efficiency. The methods were applicable to other species of lactobacilli as well.

journal_name

Appl Environ Microbiol

authors

Lee-Wickner LJ,Chassy BM

doi

10.1128/AEM.48.5.994-1000.1984

keywords:

subject

Has Abstract

pub_date

1984-11-01 00:00:00

pages

994-1000

issue

5

eissn

0099-2240

issn

1098-5336

journal_volume

48

pub_type

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