伝統的な発酵ベーコンからのラクトコッカス・ラクティスZB1の特徴:食品保存のためのゲノム洞察と抗真菌能力
Qian Liu1, Yuwen Jian1, Guojin Li1
1School of Biological Science and Engineering, Shaanxi University of Technology, 723001 Hanzhong, China.
International journal of food microbiology
|August 30, 2025
まとめ
伝統的な中国のベーコンから分離されたLactococcus lactis ZB1は,有機酸による強い抗真菌活性を示しています. このプロバイオティック菌株は 食品の安全性や保存期間を延長する 自然生物保存剤としての可能性を秘めています
科学分野:
- 食品微生物学
- 細菌学
- 応用微生物学
背景:
- 発酵食品からのラクトコッカス・ラクティス菌株は,プロバイオティックおよびバイオ保存剤の用途に価値があります.
- 伝統的な発酵食品は 有益な微生物の貯蔵庫であり 工業的な用途がある可能性があります
研究 の 目的:
- ゼンバベーコンのラクトコッカスZB1をゲノム特性と抗真菌性により特徴づけること.
- L. lactis ZB1のプロバイオティクスの可能性と天然の食品保存剤の可能性を評価する.
主な方法:
- L.ラクティスZB1のゲノム解析で,重要な遺伝子を特定する.
- 食品腐食菌に対する細胞フリースーパーナタン (CFS) の抗真菌活性試験
- 熱とpHの変動下での抗真菌活性とプロテアゼ処理の安定性アッセイ
主要な成果:
- L. lactis ZB1は2,312 Mbのゲノムを持ち,代謝,ストレス耐性,バクテリオシン生物合成のための遺伝子を持っています.
- L. ラクティスZB1からのCFSは,ペニシリウムグライソフルブームとアスペルギルスオクラセウスの有意な,用量依存の抑制を示した.
- 抗真菌作用は熱に安定し,主に非タンパク質有機酸に起因し,pH中和後の有効性は低下した.
結論:
- Lactococcus lactis ZB1はプロバイオティクスの有望な候補である
- この菌株は熱的に安定し,有機酸媒介の抗真菌作用があり,食品の安全性を高め,保存期間を延長する有効な天然生物保存剤です.
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