ウサギからの乳酸バクテリアの in vitro 増殖に対するキシロオリゴサッカリドの作用
Jian-Xia Yang1, Hai-Ying Guo1, Kexin Zhang1
1College of Life Science, Sichuan Normal University, Chengdu, China.
Journal of the science of food and agriculture
|September 3, 2025
まとめ
キシロオリゴサカリド (XOS) は,ウサギの有益な乳酸細菌 (LAB) を促進する. ラクトバチルス sp YT155はXOSを効果的に代謝し,強いプロバイオティクスの特徴を示し,ウサギの腸の健康のためのシンバイオティクスの可能性を示唆しています.
科学分野:
- 動物科学
- 微生物学
- 腸内微生物群の研究
背景:
- ウサギの離乳後の下痢は,抗生物質の飼料添加物の代替品を必要とします.
- ウサギの腸の健康のためにエコフレンドリーなプレビオティックとして,キシロオリゴサカリド (XOS) を調査する.
- ウサギの腸内微生物の乳酸細菌 (LAB) のインビトロ増殖に焦点を当てます.
研究 の 目的:
- 乳酸バクテリア (LAB) の成長に対するキセロオリゴサッカリド (XOS) のインパクトを in vitro で評価する.
- XOSを代謝できる特定のLAB株を特定する.
- XOSを代謝するLAB株のプロバイオティクスの可能性を評価する.
主な方法:
- 94匹のウサギの腸 LAB 株のXOS利用のための in vitro スクリーニング.
- XOSを代謝する株のゲノム分析により,関連する遺伝子クラスター (例えば,xylABCPRT,xylCFGHT) を特定する.
- ストレス耐性,病原体抑制,抗酸化作用を含むプロバイオティクスの性質の評価
主要な成果:
- Xylo- oligosaccharide (XOS) は,LAB株の36. 2% (34/94) の成長を著しく促進した.
- ラクトバチルス sp YT155は細胞内β-キセロシダースによる強固なXOS代謝を示し,関連するキセル遺伝子クラスターを有していた.
- 菌株YT155は,様々な状態に対する耐性,E. coliとS. aureusに対する強い反抗性,高い抗酸化能力,そして移植可能な耐性遺伝子のない抗生物質に対する感受性を示した.
結論:
- キシロオリゴサッカライド (XOS) は,ウサギの有益なLABを高めるための効果的なプレバイオティクとして機能します.
- ラクトバチルス sp YT155は,XOSの代謝と有益な特性により,プロバイオティックとして有意な可能性を示しています.
- XOSとLactobacillus spを組み合わせる シンバイオティックとしてYT155は,ウサギの腸内微生物群を調節し,腸内健康を改善するための有望な戦略です.
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