Journal of Tropical Oceanography ›› 2024, Vol. 43 ›› Issue (6): 196-200.doi: 10.11978/2024011CSTR: 32234.14.2024011

• Marine Biology • Previous Articles     Next Articles

Secondary metabolites from the sponge-derived fungus Aspergillus sp. SCSIO 41018 and their free radical scavenging activity

YUAN Yuan1,2(), ZHANG Yuanyuan3, XU Fuquan3, LIU Qingchao1(), WANG Junfeng2,4()   

  1. 1. School of Chemical Engineering, Northwest University, Xi’an 710069, China
    2. Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
    3. School of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang 222005, China
    4. Sanya Institute of Ocean Eco-Environmental Engineering, Sanya 572000, China
  • Received:2024-01-10 Revised:2024-02-22 Online:2024-11-10 Published:2024-12-05
  • Contact: LIU Qingchao, WANG Junfeng
  • Supported by:
    Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City(2021JJLH0097); Guangdong Basic and Applied Basic Research Foundation, China(2022B1515120075)

Abstract:

This paper reported the identification of seven compounds from the rice ferment of Aspergillus sp. fungus SCSIO 41018 isolated from sponge Callyspongia sp. in the Xuwen County, Guangdong Province, China. These compounds were purified by silica gel column chromatography, Sephadex LH-20 gel column chromatography and semi-preparative high performance liquid chromatography. The seven compounds were identified by nuclear magnetic resonance spectroscopy and mass spectrometry to determine their structures, in combination with the reported data, as: cycloechinulin (1), 4-methyl-1H-pyrazole-3-carboxylic acid (2), diorcinol (3), methyl-4-hydroxy-2-(3-hydroxy-5-methylphenoxy)-6-methylbenzoate (4), benzeneacetic acid (5), protocatechuic acid (6), indole-3-carboxaldehyde (7), wherein compound 2 was first isolated from Aspergillus sp. fungi. The free radical scavenging activity was evaluated, and the results showed that compounds 5 and 6 had stronger free radical scavenging ability and antioxidants potential than the positive control ascorbic acid (Vc, vitamin C).

Key words: Aspergillussp., fungus, secondary metabolites, free radical scavenging activity

CLC Number: 

  • Q936