Acetobacter pasteurianus is an acetic acid-producing Gram-negative bacterium commonly found associated with plants and plant products and widely used in the production of fermented foods, such as kefir and vinegar. Due to the acid conditions of the bacterium living habitat, uncommon structural features composing its cell envelope are expected. In the present work we have investigated the A. pasteurianus CIP103108 lipopolysaccharide (LPS) structure and immunoactivity. The structure of the lipid A and of two different O-polysaccharides was assessed. Furthermore, immunological studies with human cells showed a low immunostimulant activity of the isolated LPS, in addition to a slight capability to lower the NF-kB activation upon stimulation by toxic LPS.
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Article Synopsis
- Whole-plant corn silage can decay quickly when exposed to air, especially in hot and humid areas, which is a problem for farmers.
- Researchers tested different ways to make silage, including using various moisture levels and temperatures, to see how it affects its durability when opened to air.
- The study found that some bacteria can hurt the silage's stability when exposed to air, but they also discovered the best conditions to control these bacteria, helping improve the quality of silage.
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