3.4.4 fermentation flask (Erlenmeyer flask) 250 mL size with similar characteristics of the arm outstretched. To maintain a closed system. Butyl rubber is off the bottle by the side of the arm protruding Rubber septum and will be closed by the transmission or sampling. A sterile needle To maintain the anaerobic conditions of the bottle at all times, the culture packed into such a bottle will be autoclaved at 121 ºC for 15 minutes prior to displace oxygen in the bottle with nitrogen gas. To achieve an anaerobic condition suitable for growth of bacteria. In all the experiments in this study are fermented at a temperature of 35 ºC and use the speed of rotation at 100 rpm repeated the experiment three.
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