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Your search keyword '"Rui-Zhi Zhu"' showing total 2 results
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2 results on '"Rui-Zhi Zhu"'

1. Antiviral and Cytotoxic Isocoumarin Derivatives from an Endophytic Fungus Aspergillus oryzae.

Author

Min Zhou, Kun Zhou, Pei He, Kun-Miao Wang, Rui-Zhi Zhu, Yue-De Wang, Wei Dong, Gan-Peng Li, Hai-Ying Yang, Yan-Qing Ye, Gang Du, Xue-Mei Li, and Qiu-Fen Hu

Abstract

Oryzaeins A–D (1-4), four new isocoumarin derivatives, along with five known ones (5-9) were isolated from solid cultures of an endophytic fungus Aspergillus oryzae. Their structures were elucidated by detailed spectroscopic analysis and by comparison with reported data of related derivatives. Among them, compounds 1 and 2 represent the first examples of isocoumarins possessing an unusual 2-oxopropyl group and a rare 3-hydroxypropyl group. Compounds 1 and 2 displayedmoderate anti-tobacco mosaic virus activities with inhibition rates of 28.4% and 30.6%, respectively, at the concentration of 20 μM. The new compounds showed moderate inhibitory activities against several human tumor cell lines with IC50 values in the range of 2.8-8.8 μM. [ABSTRACT FROM AUTHOR]

Published
2016
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2. Simultaneous Determination of Linalool, Ambrox, and Sclareolide in Clary Sage Oil by GC-MS.

Author

Yang-Bin Xu, Kai Wang, Rui-Zhi Zhu, Wei Zhe, and Zhi-Yu Li

Abstract

The volatile components of clary sage oil were identified by gas chromatography/time-of-flight mass spectrometry (GCTOFMS). The peak area normalization method was used to calculate the relative content of the components. With the MS library search, 32 compounds, which account for 91.24% in the volatile components of clary sage oil, were confirmed by using retention index. A rapid and effective GC-MS method for simultaneous determination of linalool, ambrox, and sclareolide in clary sage oil has been developed. Three samples were used for method evaluation. The relative standard deviations (RSD) were <4% for linalool, ambrox, and sclareolide. The limits of detections (LOD) were 80, 50, and 150 µgL-1 for linalool, ambrox, and sclareolide, respectively. The recoveries were 90-109% for linalool, 91-105% for ambrox, and 94-103% for sclareolide. The method could be applied to measure linalool, ambrox, and sclareolide in clary sage oil. [ABSTRACT FROM AUTHOR]

Published
2014
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