Analysis of the Bacterial Flora of Substrates Used for the Cultivation of Agaricus bisporus: Relationship between Clostridia and Yield.

Agaricus bisporus has a high nutritional value and health benefits and its popularity is increasing among vegans and health-conscious consumers, indicating the need for its stable production. Therefore, we examined the bacterial flora of the substrates used to produce A. bisporus using a 16S rRNA gene ana-lysis and discussed the relationship between the bacterial flora and yield. The results obtained showed that A. bisporus yield slightly decreased with an increase in the abundance of Clostridia in substrates after primary fermentation. Lactobacillus showed little or no relationship with A. bisporus yield. Clostridia was identified as an indicator of A. bisporus yield.