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2 results on '"Shu-Feng Bi"'

1. Chemical composition and antioxidant activities of the essential oil fromNandina domesticafruits

Author

Ling Fang, Jie Wu, Yong-Zhan Lv, Shu-Feng Bi, Zhong-Kang Li, and Guang-Qi Zhu

Subjects
Vinyl Compounds, Antioxidant, DPPH, Acyclic Monoterpenes, medicine.medical_treatment, Drug Evaluation, Preclinical, Plant Science, Furfural, 01 natural sciences, Biochemistry, Antioxidants, Analytical Chemistry, law.invention, Inhibitory Concentration 50, chemistry.chemical_compound, Picrates, Linalool, Superoxides, law, Oils, Volatile, medicine, Organic chemistry, Food science, Essential oil, ABTS, biology, 010405 organic chemistry, Biphenyl Compounds, Guaiacol, Organic Chemistry, Berberidaceae, biology.organism_classification, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, Oleic acid, Nandina, chemistry, Fruit, Monoterpenes, Hexanols
Abstract

The chemical composition and antioxidant activities of the essential oil from Nandina domestica fruits were studied for the first time. Twenty-two compounds, representing 82.79% of the oil, were identified from the oil. The major compounds were 3-hexen-1-ol (12.9%), linalool (12.3%), 2-methoxy-4-vinylphenol (9.9%), oleic acid (8.0%), furfural (5.8%) and 2,6-di-tert-butyl-4-methylphenol (5.7%). The antioxidant activities of the oil were evaluated using reducing power, metal chelating ability and scavenging capacity against 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azinobis-3-ethylbenzthiazoline-6-sulfonate (ABTS) and superoxide anion free radical. The oil exhibited significant antioxidant activities.

Published
2015

2. New alkaloid fromStreptomyces koyangensisresiding inOdontotermes formosanus

Author

Zhi-Kai Guo, Shu-Feng Bi, Ren-Xiang Tan, Hui Ming Ge, Nan Jiang, and Rui-Hua Jiao

Subjects
Staphylococcus aureus, Circular dichroism, Streptococcus pyogenes, Stereochemistry, Ethyl acetate, Pharmaceutical Science, Isoptera, Microbial Sensitivity Tests, Biology, Analytical Chemistry, chemistry.chemical_compound, Alkaloids, Candida albicans, Drug Discovery, Escherichia coli, Animals, Nuclear Magnetic Resonance, Biomolecular, Pharmacology, Molecular Structure, Odontotermes formosanus, Circular Dichroism, Alkaloid, Organic Chemistry, Streptomyces koyangensis, Indolizines, General Medicine, Antimicrobial, Streptomyces, Micrococcus luteus, Complementary and alternative medicine, chemistry, Pseudomonas aeruginosa, Cryptococcus neoformans, Molecular Medicine, Aspergillus niger, Bacillus subtilis
Abstract

A new alkaloid was isolated from the ethyl acetate extract of the culture of a termite-associated Streptomyces koyangensis BY-4. The structure of 1 was elucidated by using MS, NMR, electronic circular dichroism data, and computational approaches. Compound 1 showed weak antimicrobial activities against a panel of test microbes.

Published
2013

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