The beer yeast species

Beer yeast species: 1, train wild yeast and yeast. Through long-term domesticated culture yeast is a wild yeast, repeated use and production practice for a long period of time, normal physiological status and characteristics, and is suitable for beer yeast production requirements. For the cultivation of the beer production yeast strains GeChang is different, the physiological characteristics of yeast is a bit different. In beer factory, anyone who is different from culture yeast shape and physiological characteristics of yeast, namely to production control and utilization of yeast, collectively known as wild yeast. Wild yeast is widely distributed in nature, if mixed in beer culture yeast will interfere with the normal conduct of beer production, great harm. 2, the yeast and yeast below. Both culture yeast. When the yeast fermentation is the feature of carbon dioxide and bubble, yeast floating in the fermented liquid surface, at the end of yeast fermentation is still floating in the liquid level, few sinking; Yeast cells more assumes the circular, most gathered together, easy ascospore formation, when separation culture gives birth to regular branch; The optimal fermentation temperature is 20 - 25 degrees, but only a third of raffinose fermentation. Below is also called the bottom storage yeast, yeast or yeast is characterized by fermentation with nitrogen dioxide produced in the fermenting liquid form within the upper and lower convection and suspended in the fermented liquid, almost at the end of the fermentation coagulation sedimentation; Cell assumes the circular or elliptic, generally not the liquid formation of ascus, extremely easy cultivation, branching rules; The optimal temperature of 6 - fermentation 10 degrees, up to 30 degrees, can all silk wadding sugar fermentation. Our brewery basically adopts the following yeast. 3, yeast and yeast powder. Condensed yeast condensed into each other at the end of the beer fermentation bacteria, subsidence is fast, wine easy to clarify; Yeast powder is not easy to condense to precipitation, but higher than the condensing yeast fermentation degree, with a typically used centrifuge separation of brewery yeast powder yeast. To have a comprehensive understanding of beer yeast, can produce delicious beer. Beer in the process of production, while beer equipment is essential, but also its yeast.