1State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China.
2Department of Biological Sciences, College of Science and Technology, Covenant University, P. M. B. 1023, Canaanland, Ota, Ogun State, Nigeria.
3Department of Biochemistry, Federal University of Technology, Akure, Ondo State, Nigeria.
4Energy Commission of Nigeria, P. M. B. 358, Garki Cenral Area, Abuja, FCT, Nigeria.
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