双孢菇培养料工厂化发酵过程中微生物及物质变化研究

Variation of Microorganisms and Physicochemical Properties of Agaricus bisporus Compost

[目的]研究双孢菇培养料工厂化发酵过程中的微生物及物质变化规律。[方法]在培养料发酵过程中的几个主要时期采样,研究微生物数量、总氮和硝态氮、总糖和还原糖、含水量、pH值等指标的变化。[结果]随着培养料发酵的进行,细菌、放线菌和霉菌三大类微生物的数量均表现为先下降后上升的趋势,总氮含量和pH值表现为上升趋势,含水量、硝态氮含量和总糖含量则表现为逐渐下降的趋势。发酵期间培养料中的还原糖呈上下波动,发酵结束后含量略有上升。[结论]得到了工厂化培养料发酵过程中微生物和部分理化指标的变化规律,为双孢菇培养料高效发酵技术研究提供理论依据。

[Objective]The aim was to study the variation of the microorganisms and materials in the Agaricus bisporus compost during the fermentation process. [Method] The compost was sampled at several major stages of the whole fermentation process,then the variation of its microbial populations,total nitrogen,nitric nitrogen,total sugar,reducing sugar,moisture content and pH values were studied. [Result] With the fermentation of the compost,the quantity of bacteria,actinomyces and molt first declined before rose,while the total nitrogen content and pH values presented an upward trend,the moisture content,nitrate content and total sugar content showed a declining tendency. The content of reducing sugar fluctuated during the fermentation process and slightly increased after the fermentation. [Conclusion] The variation characteristics of the microorganisms and partial physicochemical indices in the Agaricus bisporus compost were obtained,which provided theoretical basis for studying the high-efficient fermentation technology of Agaricus bisporus compost.