温度変化に対する無酸素発酵の安定性を調べる:プロセス指標と回復戦略
Manuel João Afecto Gonçalves1, Cristina González-Fernández2, Silvia Greses3
1Biotechnological Processes Unit, IMDEA Energy, Avda. Ramón de la Sagra 3, Móstoles, Madrid, 28935, Spain.
Chemosphere
|August 28, 2025
まとめ
温度下降は,食品廃棄物の無酸素発酵 (AF) に深刻な影響を及ぼし,揮発性脂肪酸 (VFA) の生成を減少させます. 温度の回復と共に再注射することで プロセスの回復を大幅に加速します
科学分野:
- バイオテクノロジー
- 環境科学
- 生化学工学
背景:
- アナーロビック発酵 (AF) は温度変動に敏感で,産業プロセスに障害が生じる危険性があります.
- 温度低下などの操作障害は,AFの効率と安定性を著しく損なう可能性があります.
研究 の 目的:
- 食品廃棄物の無酸素発酵 (AF) への温度低下の影響を調査する.
- 温度によるストレスの後,揮発性脂肪酸 (VFA) の生産を回復するための回復戦略を評価する.
主な方法:
- 25°Cから15°Cに温度を下げられた食品廃棄物 AF
- 揮発性脂肪酸 (VFA) と代謝産物プロファイルの変化を分析した.
- 自然な温度回復と再接種による温度の復元を組み合わせた2つの回復戦略を実装し,比較した.
主要な成果:
- 温度が25°Cから15°Cに下がると,VFAの生産とバイオコンバージョンの収量が大幅に減少しました.
- 発酵経路は,特定の乳酸細菌 (LAB) の濃縮により,乳酸とサクシン酸にシフトした.
- 2つの回復戦略はVFAの生産を回復したが,再接種は回復時間を半減させた.
結論:
- 食物廃棄物のAFを大幅に抑制し,代謝経路を変化させます.
- 効果的な回復戦略,特に再接種は,障害を軽減し,バイオプロセスの安定性を確保するために不可欠です.
- 温度によるストレスを理解し管理することは 産業用AFの運用に不可欠です
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