Phenylacetic and phenylpropionic acids do not affect xylan degradation by Ruminococcus albus.

نویسندگان

  • Carine Reveneau
  • Sarah E Adams
  • M A Cotta
  • M Morrison
چکیده

Since the addition of either ruminal fluid or a combination of phenylacetic and phenylpropionic acids (PAA/PPA) has previously been shown to dramatically improve cellulose degradation and growth of Ruminococcus albus, it was of interest to determine the effects of these additives on xylan-grown cultures. Although cell-bound xylanase activity increased when either PAA/PPA or ruminal fluid was added to the growth medium, total xylanase did not change, and neither of these supplements affected the growth or xylan-degrading capacity of R. albus 8. Similarly, neither PAA/PPA nor ruminal fluid affected xylan degradation by multiple strains of R. albus when xylan prepared from oat spelts was used as a carbohydrate source. These results show that the xylanolytic potential of R. albus is not conditional on the availability of PAA/PPA or other components of ruminal fluid.

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عنوان ژورنال:
  • Applied and environmental microbiology

دوره 69 11  شماره 

صفحات  -

تاریخ انتشار 2003