Scholarlink

Background <p>The management of agricultural waste (AW) poses a significant environmental challenge. This study explores the dual valorization of these wastes, harnessing their indigenous microbial communities for synergistic biotechnological applications in bioenergy and animal nutrition.</p> Methods <p>Using a combination of culture, biochemical assays, and 16&#xa0;S rRNA/ITS sequencing, known and novel microorganisms within maize husk, sweet potato peel, wheat shaft, and sugarcane shaft substrates were identified. The proximate, mineral, and vitamin contents of the agro-wastes (AWs) were determined before and after 21 days of fermentation to determine substrate suitability for animal feed. A dual-chamber microbial fuel cell (MFC) was constructed to evaluate the bioelectricity generation potential.</p> Results <p>The sweet potato peel had the highest bacterial count at 3.8 × 10<sup>4</sup> CFU/ml, while the maize husk had the highest fungal load at 6.55 × 10<sup>4</sup> SFU/ml. Fermentation significantly increased the protein, mineral, and vitamin contents of the agrowastes after fermentation while reducing the fibre and carbohydrate contents. Notably, compared with the other substrates, the maize husk produced the highest voltage of 68 mV and current of 77 µA. <i>Pichia kudriavzevii</i> MN007220.1, <i>Geotrichum candidum</i> MK943778.1, <i>Bacillus subtilis</i> NR102783.2, and <i>Lysinibacillus fusiformis</i> KP419973.1 were identified in these AW substrates.</p> Conclusions <p>These findings underscore the dual potential of agricultural waste as a valuable source for bioelectricity generation and as a nutritious, digestible supplement for animal feed postfermentation. This highlights a viable ‘Waste-to-Wealth’ model for sustainable agricultural practices.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synergistic valorization: generating bioelectricity and high-protein animal feed from fermented crop residues

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年12月31日

查看全文
  • Gladys Oluwafisayo Adenikinju,
  • Daniel Juwon Arotupin,
  • Michael Tosin Bayode

摘要

Background

The management of agricultural waste (AW) poses a significant environmental challenge. This study explores the dual valorization of these wastes, harnessing their indigenous microbial communities for synergistic biotechnological applications in bioenergy and animal nutrition.

Methods

Using a combination of culture, biochemical assays, and 16 S rRNA/ITS sequencing, known and novel microorganisms within maize husk, sweet potato peel, wheat shaft, and sugarcane shaft substrates were identified. The proximate, mineral, and vitamin contents of the agro-wastes (AWs) were determined before and after 21 days of fermentation to determine substrate suitability for animal feed. A dual-chamber microbial fuel cell (MFC) was constructed to evaluate the bioelectricity generation potential.

Results

The sweet potato peel had the highest bacterial count at 3.8 × 104 CFU/ml, while the maize husk had the highest fungal load at 6.55 × 104 SFU/ml. Fermentation significantly increased the protein, mineral, and vitamin contents of the agrowastes after fermentation while reducing the fibre and carbohydrate contents. Notably, compared with the other substrates, the maize husk produced the highest voltage of 68 mV and current of 77 µA. Pichia kudriavzevii MN007220.1, Geotrichum candidum MK943778.1, Bacillus subtilis NR102783.2, and Lysinibacillus fusiformis KP419973.1 were identified in these AW substrates.

Conclusions

These findings underscore the dual potential of agricultural waste as a valuable source for bioelectricity generation and as a nutritious, digestible supplement for animal feed postfermentation. This highlights a viable ‘Waste-to-Wealth’ model for sustainable agricultural practices.

Graphical Abstract