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<p>Chinese distiller grains (CDGs) are a primary by-product of the Baijiu production process. This research focused on converting CDGs into high-protein, low-fiber, and non-toxic feed through the synergistic effects of the synthetic microbial community in solid-state fermentation (SMC-SSF) of CDGs. After fermentation promoted by inorganic nitrogen, the protein content indicated 33.32%. Concurrently, crude fiber, ethanol, lactic acid, and acetic acid content were decreased by 20.46%, 64.28%, 64.28%, and 90.96%, respectively. Additionally, zearalenone and aflatoxin B1 content decreased by 9.32% and 63.75%. The organic acid, ethanol, and mycotoxin content in fermented CDGs (FCDGs) complied with the standards of Food and Agriculture Organization (FAO). While the digestibility was enhanced 62.46%, it also showed the effective antimicrobial activity against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. This study provides a viable pathway for producing protein feed with enhanced probiotic characteristics.</p> Graphical Abstract <p></p>

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Utilization of synthetic microbial community in solid-state fermentation (SMC-SSF) for converting Chinese distiller grains into protein feed

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月1日

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  • Zhiqing Liang,
  • Zhi Wang,
  • Xiaojuan Shen,
  • Ruitao Chen,
  • Yuansong Peng,
  • Yafan Cai,
  • Shan Zeng,
  • Wei Zhuang,
  • Jianping Yang,
  • Dong Liu,
  • Shilei Wang,
  • Jingliang Xu,
  • Hanjie Ying

摘要

Chinese distiller grains (CDGs) are a primary by-product of the Baijiu production process. This research focused on converting CDGs into high-protein, low-fiber, and non-toxic feed through the synergistic effects of the synthetic microbial community in solid-state fermentation (SMC-SSF) of CDGs. After fermentation promoted by inorganic nitrogen, the protein content indicated 33.32%. Concurrently, crude fiber, ethanol, lactic acid, and acetic acid content were decreased by 20.46%, 64.28%, 64.28%, and 90.96%, respectively. Additionally, zearalenone and aflatoxin B1 content decreased by 9.32% and 63.75%. The organic acid, ethanol, and mycotoxin content in fermented CDGs (FCDGs) complied with the standards of Food and Agriculture Organization (FAO). While the digestibility was enhanced 62.46%, it also showed the effective antimicrobial activity against Escherichia coli and Staphylococcus aureus. This study provides a viable pathway for producing protein feed with enhanced probiotic characteristics.

Graphical Abstract