天然产物研究与开发 ›› 2022, Vol. 34 ›› Issue (1): 70-75.doi: 10.16333/j.1001-6880.2022.1.010

• 研究简报 • 上一篇    下一篇

土壤真菌Aspergillus fumigatus固体发酵产物的化学成分及抗氧化活性研究

赵江源1#,范箫艺2#,邹雪峰3,杨佩文4,唐蜀昆1,李铭刚1*,刘世巍2,丁建海2*   

  1. 1云南大学生命科学学院,昆明650091;2宁夏师范学院化学化工学院,固原756000;3云南农业大学植物保护学院,昆明650201;4云南省农业科学院农业环境资源研究所,昆明 650205
  • 出版日期:2022-01-28 发布日期:2022-01-28
  • 基金资助:
    国家自然科学基金(31760019);云南省基础研究面上项目(202001BB050025);云南省重大科技专项-生物资源数字化开发应用(202002AA100007);宁夏自然科学基金项目(2021AAC03244)

Study on chemical composition and antioxidant activity of solid fermented product of soil fungus Aspergillus fumigatus

ZHAO Jiang-yuan1#,FAN Xiao-yi2#,ZOU Xue-feng3,YANG Pei-wen4,TANG Shu-kun1,LI Ming-gang1*,LIU Shi-wei2,DING Jian-hai2*   

  1. 1School of Life Sciences,Yunnan University,Kunming 650091,China;2College of Chemistry and Chemical Engineering,Ningxia Normal University,Guyuan 756000,China;3College of Plant Protection,Yunnan Agricultural University,Kunming 650201, China;  4Institute of Agricultural Environment and Resources,Yunnan Academy of Agricultural Sciences,Kunming 650205,China
  • Online:2022-01-28 Published:2022-01-28

摘要: 为研究来源于哀牢山国家级自然保护区河谷的土壤真菌Aspergillus fumigatus固体发酵产物的化学成分及抗氧化活性研究,采用正相硅胶柱层析、反相硅胶柱层析和Sephadex LH-20分离纯化,借助核磁共振波谱等方法鉴定化合物结构,从中共得到13个化合物,分别鉴定为rubrofusarin B(1)、rubrofusarin A(2)、carbonarone A(3)、aspernigrin A(4)、flavasperone(5)、(22E,24R)-5α,8α-过氧麦角甾-6,22-二烯-3β-醇 (6)、(22E,24R)-5α,8α-过氧麦角甾-6,9(11),22-三烯-3β-醇(7)、ourosperone A(8)、(22E,24R)-麦角甾-5,7,22-三烯-3β-醇(9)、stigmast-1,5-dien-3β-ol(10)、fonsecinones A(11)、asperpyrone C(12)、asperpyrones B(13)。其中,化合物1~57~13为从该菌种中首次分离。抗氧化活性结果显示,化合物8对DPPH(IC50 = 3.453 mg/mL)、ABTS+(IC50 = 0.155 mg/mL)、OH(IC50 = 0.019 mg/mL)自由基都有一定的清除效果。

关键词: 烟曲霉, 化学成分, 结构鉴定, 固体发酵, 抗氧化活性

Abstract:

To study the chemical constituents of the fungus Aspergillus fumigatus isolated from a soil sample collected from the Ailao Mountain area.Thirteen compounds,rubrofusarin B (1),rubrofusarin A (2),carbonarone A (3),aspernigrin A (4),flavasperone (5),(22E,24R)-5α,8α-epidioxy-ergosta-6,22-dien-3β-ol (6),(22E,24R)-5α,8α-epidioxy-ergosta-6,9 (11),22-dien-3β-ol (7),ourosperone A (8),ergosta-5,7,22-trien-3β-ol (9),stigmast-1,5-dien-3β-ol (10),fonsecinones A (11),asperpyrone C (12),asperpyrones B (13) were isolated from the fungus with the help of the silica gel,Rp-18 and Sephadex LH-20 column chromatography.Their structures were elucidated by the spectral analysis.Compounds 1-5,7-13 are isolated from this species for the first time.Compound 8 showed antioxidant activity with a certain scavenging effect on DPPH (IC50 3.453 mg/mL),ABTS+ (IC50 0.155 mg/mL),and OH (IC50 0.019 mg/mL) radicals.

Key words: Aspergillus fumigatus, chemical constituent, structure identification, solid fermentation, antioxidant activity

中图分类号:  R284.1