Results 91 to 100 of about 7,896 (250)

Volatile Organic Compounds in Malt Based on GC-MS and GC-IMS Technology

Shipin gongye ke-ji
In order to explore the differences of volatile organic compounds (VOCs) in different malts, roasted malt and biscuit malt were detected by gas chromatography-mass spectrometry (GC-MS) and gas chromatography-ion mobility spectrometry (GC-IMS ...
Qian LIU, Yanlong BAI, Jianhua JIA, Lin XIAO, Xiaojuan WANG, Xiaolong ZHOU, Ran QIU   +6 more
doaj   +1 more source

Fingerprint analysis of volatile organic compounds in different varieties ofcoffee beans by gas chromatography-ion mobility spectrometry [PDF]

Zhongguo niangzao
In this study, the volatile flavor substances of 4 different varieties of raw coffee beans (A1, B1, C1, D1) and the 4 roasted coffee beans (A2, B2, C2, D2) were tested and analyzed by headspace gas chromatography (HS-GC)-ion migration spectrometry (IMS),
YANG Li, YANG Weixing, LI Xi, FAN Zhuqing, LI Huajian, LI Xueling
doaj   +1 more source

Elemental Composition Analysis of Sheep Tears Using Particle‐Induced X‐Ray Emission

Veterinary Ophthalmology, EarlyView.
ABSTRACT Objective To identify the elemental composition of ovine tears using particle‐induced X‐ray emission (PIXE). Animals Studied Ten physically healthy female sheep. Procedures Tear samples were collected using Schirmer tear test strips. Tear samples were collected once daily over five consecutive days to assess reproducibility. Elemental analysis
Alon Zahavi, Oren Pe'er, Noa Cohen Sinai, Yoav Vardizer, Lionel Sebbag, Ron Ofri, Olga Girshevitz, Nitza Goldenberg‐Cohen   +7 more
wiley   +1 more source

Computational methods for metabolomic data analysis of ion mobility spectrometry data-reviewing the state of the art [PDF]

, 2012
Ion mobility spectrometry combined with multi-capillary columns (MCC/IMS) is a well known technology for detecting volatile organic compounds (VOCs). We may utilize MCC/IMS for scanning human exhaled air, bacterial colonies or cell lines, for example ...
Baumbach, Jan, Baumbach, Jörg Ingo, Hauschild, Anne-Christin, Jang, Mi, Pauling, Josch, Rupp, Kathrin, Schneider, Till   +6 more
core   +3 more sources

Research Progress on the Application of Gas Chromatography-ion Mobility Spectrometry in the Field of Tea [PDF]

Chaye kexue
Tea is an important economic crop in traditional Chinese agriculture, with a long history and rich cultural connotation. The different parameters of tea origin, storage time and processing method determine the quality, nutritional value and market ...
GAN Fangyuan, LIU Zhenping, FU Bingsheng, LONG Daoqi, PANG Kejing, JIANG Rong
doaj   +1 more source

Volatile Profile Characterization of Winter Jujube from Different Regions via HS-SPME-GC/MS and GC-IMS

Journal of Food Quality, 2021
A combined untargeted and targeted approach was established for fingerprinting volatile organic compounds in winter jujubes from eight regions of China.
Yening Qiao, Jinfeng Bi, Qinqin Chen, Xinye Wu, Min Gou, Haonan Hou, Xinwen Jin, Giorgia Purcaro   +7 more
doaj   +1 more source

Algorithm for Automatic Peak Detection and Quantification for GC-IMS Spectra

, 2020
Ion Mobility Spectrometry with a coupled Gas Chromatography (GC-IMS) pre-separation is an analytical technique suitable for detection of volatile organic compounds (VOCs) in complex sample matrices (indoor & outdoor air, breath samples, food, beverages, microbial cultures, etc.). Its outstanding sensitivity allows in-situ analysis of a very large range
Fernandes, Jorge, Vassilenko, Valentina, Santos, Paulo   +2 more
openaire   +2 more sources

Practical Applications of Secondary/Extractive Electrospray Ionization (SESI): A Versatile Tool for Real‐Time Chemical Analysis

Mass Spectrometry Reviews, Volume 45, Issue 2, Page 392-428, March/April 2026.
ABSTRACT In the 1980s, researchers discovered the remarkable ability of electrospray plumes to effectively ionize gas‐phase molecules via secondary ionization. Around 20 years later—coinciding with the ambient mass spectrometry revolution—secondary electrospray ionization (SESI) and extractive electrospray ionization (EESI) coupled to mass spectrometry
Xin Luo, Huiling Wang, Xiaolan Hu, Sasho Gligorovski, Xue Li, Pablo Sinues   +5 more
wiley   +1 more source

Methods to prevent PCR amplification of DNA from non-viable virus were not successful for infectious laryngotracheitis virus.

PLoS ONE, 2020
Molecular-based testing of poultry dust has been used as a fast, sensitive and specific way to monitor viruses in chicken flocks but it provides no information on viral viability.
Yugal Raj Bindari, Stephen W Walkden-Brown, Priscilla F Gerber   +2 more
doaj   +1 more source

A Novel Peak‐Shape Aware Approach for Mass Alignment in Mass Spectrometry

Rapid Communications in Mass Spectrometry, Volume 40, Issue 4, 28 February 2026.
ABSTRACT Rationale In mass spectrometry measurements, mass shifts may be inadvertently introduced due to instrumental drift and calibration inaccuracies, potentially compromising the accuracy of subsequent data analysis. This work presents a novel, label‐free algorithm to improve relative mass alignment between mass spectra.
Thomas Vanhemel, Melanie Nijs, Angeliki Birmpili, Tim F. E. Hendriks, Eva Cuypers, Bart De Moor   +5 more
wiley   +1 more source