Abstract
The effect of the bacteriocin lacticin 3147 on the branched-chain amino acid transamination by Lactococcus lactis IFPL359 was investigated. The bacteriocin provokes membrane permeabilisation of the cells, rendering them non-viable but metabolically active. Free diffusion of amino acids into the cell was facilitated. In addition, membrane permeabilisation promotes further cell lysis. Both facts render the enzymes more accessible to their substrates and hence increase branched-chain amino acid transamination. This research broadens the spectrum of technological applications of lacticin 3147 in the development of cheese flavour.
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