Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Chuyển hóa phức hợp tannin-protein bởi vi khuẩn kỵ khí tùy tiện phân lập từ phân gấu túi
Tóm tắt
Các con đường chuyển hóa liên quan đến sự phân hủy phức hợp tannin-protein (T-PC) đã được khảo sát ở nhiều loại vi khuẩn kỵ khí tùy tiện, đặc biệt là vi khuẩn phân lập từ phân gấu túi, bao gồm vi khuẩn ruột phân hủy T-PC (T-PCDE), Streptococcus bovis, Klebsiella pneumoniae và K. oxytoca. Nghiên cứu cho thấy T-PCDE và loại hình I của S. bovis có khả năng phân hủy protein liên kết với gallotannin (một loại tannin có thể thủy phân), nhưng không thể phân hủy protein liên kết với quebracho (một loại tannin cô đặc). Các nghiên cứu tiếp theo cho thấy những chủng này chuyển hóa axit gallic thành pyrogallol. Các chủng Klebsiella pneumoniae và K. oxytoca, không phân hủy T-PC, cũng chuyển hóa axit gallic thành pyrogallol. Pyrogallol không bị phân hủy bởi bất kỳ chủng nào được nghiên cứu, nhưng không được phát hiện trong phân tươi của gấu túi. Phần lớn các chủng được phân lập từ phân có khả năng phân hủy phloroglucinol. Dựa trên các phát hiện này, chúng tôi đề xuất rằng các thành viên của hệ vi khuẩn đường ruột của gấu túi hợp tác trong việc phân hủy T-PC.
Từ khóa
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