A5031171176- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Methane Hydrates and Related Phenomena
- Natural product bioactivities and synthesis
- Chromatography in Natural Products
- Mass Spectrometry Techniques and Applications
- Phytochemistry and Biological Activities
- Analytical Chemistry and Chromatography
- Biological Activity of Diterpenoids and Biflavonoids
- Traditional Chinese Medicine Analysis
- Advanced Chemical Sensor Technologies
- Phytochemicals and Antioxidant Activities
- Plant Gene Expression Analysis
- Plant biochemistry and biosynthesis
- Plant-derived Lignans Synthesis and Bioactivity
- Morinda citrifolia extract uses
- Food Quality and Safety Studies
- Pharmacological Effects of Natural Compounds
- Synthesis and bioactivity of alkaloids
- Flavonoids in Medical Research
- Analytical Chemistry and Sensors
- Indoor Air Quality and Microbial Exposure
- Plant-based Medicinal Research
- Pickering emulsions and particle stabilization
- Bioenergy crop production and management
Washington State University
2020-2024
Tarim University
2016-2022
Xinjiang Production and Construction Corps
2012-2019
Life University
2016
Sinopec (China)
2013
Northwest A&F University
2013
Xinjiang Agricultural University
2012
Southwest Minzu University
2006-2009
New Mexico State University
1995
A comprehensive two-dimensional (2D) reverse phase (RP) liquid chromatography (LC) method is developed for alkaloid analysis. This offline 2D using different pH values. With a value of 10.5, most alkaloids appear in the form neutral molecules possessing high retention factors based on their polarity, while polarity order changed when decreased to 3.0. The performance modulated LC demonstrated with 8 standards which resulted orthogonal separation. then applied total separation Corydalis...
Anthocyanins from red cabbage are of great importance for their applications in the food industry as natural colorants and beneficial effects on human wellness antioxidants. This study aimed to develop an effective method isolation anthocyanins with help a combination alternate recycling direct preparative liquid chromatography. Ten major components were isolated structures identified by HPLC-MS/MS. Meanwhile, stability under various light conditions was also investigated so provide data...
The biochemical activities of dirigent proteins (DPs) give rise to distinct complex classes plant phenolics. DPs apparently began emerge during the aquatic-to-land transition, with phylogenetic analyses revealing presence numerous DP subfamilies in kingdom. vast majority (>95%) these large multigene families still await discovery their functions. Here, we elucidated 3D structures two pterocarpan-forming dirigent-like domains. Both stereospecifically convert diastereomeric chiral isoflavonoid...
Pea phytoalexins (–)-maackiain and (+)-pisatin have opposite C6a/C11a configurations, but biosynthetically how this occurs is unknown. dirigent-protein (DP) PsPTS2 generates 7,2ʹ-dihydroxy-4ʹ,5ʹ-methylenedioxyisoflav-3-ene (DMDIF), stereoselectivity towards four possible 7,2ʹ-dihydroxy-4ʹ,5ʹ-methylenedioxyisoflavan-4-ol (DMDI) stereoisomers was investigated. Stereoisomer configurations were determined using NMR spectroscopy, electronic circular dichroism, molecular orbital analyses....
A novel on-line screening method for natural antioxidants was developed with a post-column cerium(<sc>iv</sc>) reduction reaction after high performance liquid chromatography (HPLC) separation.
Abstract Three ion mobility analyzers with different reagent gases for chemical ionization were interfaced to a single computer and operated software package created simultaneous continuous monitoring of 1 8 analyzers. Mobility spectra collected digitized on separate input channels 200 ms sampling intervals individual Volatile organic compounds (VOCs) in indoor ambient atmospheres monitored two scenarios: laboratory air during designed releases several VOCs central chemistry storeroom used...
Abstract Red alder (Alnus rubra Bong.) is an ecologically significant and important fast-growing commercial tree species native to western coastal riparian regions of North America, having highly desirable wood, pigment, medicinal properties. We have sequenced the genome a rapidly growing clone. The assembly nearly complete, containing full complement expected genes. This supports our objectives identifying studying genes pathways involved in nitrogen-fixing symbiosis those related secondary...
Fourier transform ion mobility spectrometry (FT-IMS) is a useful multiplexing method for improving the duty cycle (DC) of IMS from 1 to 25% when using an entrance and exit gate modulate current with synchronized square wave chirp.
Background: The new tender leaf of Acanthopanax giraldii Harms, A. leucorrhizus (Oliv.) Harms var. fulvescens & Rehd, and setchuenensis ex Diels are collected as "Wu-Jia Vegetables" in every spring. Objective: To distinguish the 3 species from Aba Ganzi Autonomous Prefectures Sichuan province China ensure their safety efficacy. Materials Methods: were during flowering fruiting high mountain boscage slopes about 3100 meters above sea level Qinghai-Tibet plateau, (SWUN). (Table1). Fresh...
Abstract In this work, ion mobility spectrometry (IMS) function as a detector and another dimension of separation was coupled with CE to achieve two‐dimensional separation. To improve the performance hyphenated CE‐IMS instrument, electrospray ionization correlation is evaluated compared traditional signal averaging data acquisition method using tetraalkylammonium bromide compounds. The effect various parameters on including sample introduction, sheath fluid drift gas, IMS were investigated....
The combination of alternate recycling and direct preparative liquid chromatography method was developed for the isolation chemical constituents from Ziziphora clinopodioides Lam. crude extract obtained by solvent extraction, column reversed-phase (RP) flash chromatography. All separations were performed with methanol water as mobile phases used twin RP columns switched a two-position ten-way valve separation. phase recycled in close loop six-way valve. fraction I II selected demonstration...
Multiplexing ion mobility spectrometry with multiple injection pulses was used to achieve a high duty cycle and thus improve the signal-to-noise (S/N) ratio while maintaining resolving power compared traditional single-pulse signal averaging method. Historically, an spectrum reconstructed by various multiplexing methods including Fourier transform (FT-IMS), Hadamard (HT-IMS), linear frequency modulation correlation (LFM-CIMS) sequence or Barker code.To artifact-free spectrum, almost perfect...