Zhengyan Xia

ORCID: 0000-0003-2486-8325
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Research Areas
  • Spectroscopy and Chemometric Analyses
  • Advanced Chemical Sensor Technologies
  • Pesticide Residue Analysis and Safety
  • Traditional Chinese Medicine Analysis
  • Metabolomics and Mass Spectrometry Studies
  • Water Quality Monitoring and Analysis
  • Photosynthetic Processes and Mechanisms
  • Analytical Chemistry and Chromatography
  • Essential Oils and Antimicrobial Activity
  • Phytochemicals and Antioxidant Activities
  • Flavonoids in Medical Research
  • Biochemical and biochemical processes
  • Insect and Pesticide Research
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Leaf Properties and Growth Measurement
  • Mass Spectrometry Techniques and Applications
  • Saffron Plant Research Studies
  • Advanced Nanomaterials in Catalysis
  • Salmonella and Campylobacter epidemiology
  • Fermentation and Sensory Analysis
  • Traditional Chinese Medicine Studies
  • Ginseng Biological Effects and Applications
  • Smart Agriculture and AI
  • Bee Products Chemical Analysis
  • Remote Sensing and LiDAR Applications

Hangzhou City University
2024

Zhejiang University
2016-2023

City College
2023

Ministry of Agriculture and Rural Affairs
2019

Linyi University
2017

Zhe jiang Research Institute of Traditional Chinese Medicine (China)
2013-2016

Hangzhou Academy of Agricultural Sciences
2016

University of Nottingham Ningbo China
2007

Hyperspectral imaging (HSI) technology has increasingly been applied as an analytical tool in fields of agricultural, food, and Traditional Chinese Medicine over the past few years. The HSI spectrum a sample is typically achieved by spectroradiometer at hundreds wavelengths. In recent years, considerable effort made towards identifying wavelengths (variables) that contribute useful information. Wavelengths selection critical step data analysis for Raman, NIRS, or spectroscopy. this study,...

10.1155/2017/6018769 article EN cc-by International Journal of Analytical Chemistry 2017-01-01

This paper is conducted to identify the authenticity, quality, and origin of saffron using hyperspectral imaging multivariate spectral analysis. Reflectance spectra were extracted from images saffron. Successive projections algorithm, genetic uninformative variable elimination, competitive adaptive reweighted sampling used select characteristic wavelengths. Back propagation neural network model was established based on selected Results showed that combining with back achieved best...

10.1080/00387010.2019.1693403 article EN Spectroscopy Letters 2019-12-26

A novel method for the rapid determination of chrysin and galangin in Chinese propolis poplar origin by means visible near infrared spectroscopy (Vis-NIR) was developed. Spectral data 114 samples were acquired 325 to 1,075 nm wavelength range using a Vis-NIR spectroradiometer. The reference values determined high performance liquid chromatography (HPLC). Partial least squares (PLS) models established spectra analyzed different preprocessing methods. effective wavelengths selected successive...

10.3390/s130810539 article EN cc-by Sensors 2013-08-13

The feasibility of near-infrared spectroscopy (NIR) to detect chlorogenic acid, luteoloside and 3,5-O-dicaffeoylquinic acid in Chrysanthemum was investigated. An NIR spectroradiometer applied for data acquisition. reference values luteoloside, the samples were determined by high-performance liquid chromatography (HPLC) used model calibration. results six preprocessing methods compared. To reduce input variables collinearity problems, three variable selection compared, including successive...

10.3390/s19091981 article EN cc-by Sensors 2019-04-28

With the increase in demand, artificially planting Chinese medicinal materials (CHMs) has also increased, and ensuing pesticide residue problems have attracted more attention. An optimized quick, easy, cheap, effective, rugged safe (QuEChERS) method with multi-walled carbon nanotubes as dispersive solid-phase extraction sorbents coupled surface-enhanced Raman spectroscopy (SERS) was first proposed for detection of deltamethrin complex matrix Corydalis yanhusuo. Our results demonstrate that...

10.3390/molecules25184081 article EN cc-by Molecules 2020-09-07

The determination of SSC and pH in grapes could be well performed on the basis RGB color features.

10.1039/c5ay02694f article EN Analytical Methods 2016-01-01

Surface-enhanced Raman scattering (SERS) technology has unique advantages in the rapid detection of pesticides plant-derived foods, leading to reduced limits and increased accuracy. Plant-derived Chinese herbal medicines have similar sources foods; however, due rough surfaces complex compositions medicines, pesticide residues this context continues rely heavily on traditional methods, which are time consuming laborious unable meet market demands for portability. The application flexible...

10.1155/2024/5531430 article EN cc-by International Journal of Analytical Chemistry 2024-01-12

10.1007/s11595-006-3422-6 article EN Journal of Wuhan University of Technology-Mater Sci Ed 2007-09-01

Abstract Introduction Standardizing the planting process is an effective way to control quality stability of herbal resources, which are susceptible external environmental factors (e.g., moisture, soil, etc.). However, how scientifically and comprehensively assess effects standardized on plant quickly test unknown samples has not been addressed. Objective The aim this study was determine compare metabolite levels herbs before after planting, distinguish their sources, evaluate quality, using...

10.1002/pca.3241 article EN Phytochemical Analysis 2023-05-24

Fentanyl is a potent opioid analgesic with high bioavailability. It the leading cause of drug addiction and overdose death. To better control abuse fentanyl its derivatives, it crucial to develop rapid sensitive detection methods. However, fentanyl-related substrates undergo similar molecular structures resulting in properties, which are difficult be identified by conventional spectroscopic In this work, method for automatic identification 8 substances spectral characteristics was developed...

10.3390/ijms231810321 article EN International Journal of Molecular Sciences 2022-09-07

Standardizing the planting process is an effective way to control quality stability of plant resource with food/pharmaceutical uses, which are susceptible external environmental factors (e. g. moisture, soil, etc.). However, how scientifically and comprehensively assess effects standardized on quickly determine unknown samples has not been addressed. In this study, efficient strategy using UHPLC-ESI-Q-TOF-MS based metabolomics combined extreme learning machine developed for distinguishing...

10.2139/ssrn.4374037 article EN 2023-01-01
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