کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4363927 | 1301587 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of temperature and glucose concentration on the N-butanoyl-l-homoserine lactone production by Aeromonas hydrophila Effect of temperature and glucose concentration on the N-butanoyl-l-homoserine lactone production by Aeromonas hydrophila](/preview/png/4363927.png)
N-butanoyl-l-homoserine lactone (C4-HSL) production by Aeromonas hydrophila 519 has been established. C4-HSL production at 22 and 30 °C was found after 20–24 h of incubation corresponding to a population density of ca. 108–109 cfu/ml, respectively. Reduced C4-HSL production was noted after 72 h of incubation at 12 °C when the culture reached ca. 109 cfu/ml. No C4-HSL production was detected at 37 °C, although a dense population was obtained. In LB broth supplemented with 0.1% and 0.5% glucose, C4-HSL production was noted whereas with 1% glucose no C4-HSL was detected although a high colony count was obtained. In the latter culture residual levels of glucose (0.65%) were found after 43 h whereas in the 0.1% and 0.5% supplemented LB, glucose was quickly consumed which may have stimulated C4-HSL production. In conclusion, the present study shows an effect of environmental conditions (temperature, glucose concentration) on the C4-HSL production and warrants further investigation to elucidate the effect of external conditions on production of AHL signal molecules to reveal the relevance of quorum sensing in, e.g. foods.
Journal: Food Microbiology - Volume 23, Issue 6, September 2006, Pages 534–540