Results 31 to 40 of about 7,080 (210)

Exploratory study using urinary volatile organic compounds for the detection of hepatocellular carcinoma [PDF]

, 2021
Hepatocellular carcinoma (HCC) biomarkers are lacking in clinical practice. We therefore explored the pattern and composition of urinary volatile organic compounds (VOCs) in HCC patients.
Arasaradnam, Ramesh P., Bannaga, Ayman S., Covington, James A., Daulton, Emma, Tyagi, Heena   +4 more
core   +2 more sources

Analysis of Listeria using exogenous volatile organic compound metabolites and their detection by static headspace–multi-capillary column–gas chromatography–ion mobility spectrometry (SHS–MCC–GC–IMS) [PDF]

, 2017
Listeria monocytogenes is a Gram-positive bacterium and an opportunistic food-borne pathogen which poses significant risk to the immune-compromised and pregnant due to the increased likelihood of acquiring infection and potential transmission of ...
Dean, John, Fowlis, Ian, Lough, Fraser, Schwalbe, Ed, Stanforth, Stephen, Taylor, Carl   +5 more
core   +1 more source

The Discrimination and Characterization of Volatile Organic Compounds in Different Areas of Zanthoxylum bungeanum Pericarps and Leaves by HS-GC-IMS and HS-SPME-GC-MS

Foods, 2022
The pericarps of Zanthoxylum bungeanum (ZBP) and leaves of Zanthoxylum bungeanum (ZBL) are popular spices in China, and they have pharmacological activities as well.
Xinlong Wu, Jiaxin Yin, Hui Ding, Wei Li, Lifeng Han, Wenzhi Yang, Fangyi Li, Xinbo Song, Songtao Bie, Xingchu Gong, Heshui Yu, Zheng Li   +11 more
doaj   +1 more source

A chromatographic approach to distinguish Gram-positive from Gram-negative bacteria using exogenous volatile organic compound metabolites [PDF]

, 2017
This paper utilized L-alanine aminopeptidase activity as a useful approach to distinguish between Gram-negative and Gram-positive bacteria. This was done using two enzyme substrates, specifically 2-amino-N-phenylpropanamide and 2-amino-N-(4-methylphenyl ...
Dean, John, Perez-Perez, Ma. Cristina, Perry, John, Ramírez-Guízar, Susana, Schwalbe, Ed, Stanforth, Stephen, Sykes, Hannah   +6 more
core   +2 more sources

Characterization of donkey-meat flavor profiles by GC–IMS and multivariate analysis

Frontiers in Nutrition, 2023
The distinctive flavor compounds of donkey meat are unknown. Accordingly, in the present study, the volatile compounds (VOCs) in the meat from SanFen (SF) and WuTou (WT) donkeys were comprehensively analyzed by gas chromatography–ion mobility spectrometry (GC-IMS) combined with multivariate analysis. A total of 38 VOCs, of which 33.33% were ketones, 28.
Limin Man, Wei Ren, Mengqi Sun, Yanrui Du, Han Chen, Huaxiu Qin, Wenqiong Chai, Mingxia Zhu, Guiqin Liu, Changfa Wang, Mengmeng Li   +10 more
openaire   +3 more sources

Investigation of paediatric PKU breath malodour, comparing glycomacropeptide with phenylalanine free L-amino acid supplements [PDF]

, 2019
In clinical practice, caregivers of children with phenylketonuria (PKU) report that their children have breath malodour. This might be linked to the regular consumption of low phenylalanine (Phe)/Phe-free protein substitutes (PS), which are an essential ...
Ashmore, Catherine, Covington, James A., Daly, Anne, Evans, Sharon, Hattersley, John, MacDonald, Anita, Pinto, Alex, Tiele, Akira   +7 more
core   +1 more source

Characterization of volatile metabolites in Pu-erh teas with different storage years by combining GC-E-Nose, GC–MS, and GC-IMS

Food Chemistry: X, 2023
Storage time is one of the important factors affecting the aroma quality of Pu-erh tea. In this study, the dynamic changes of volatile profiles of Pu-erh teas stored for different years were investigated by combining gas chromatography electronic nose ...
Yuting Rong, Jialing Xie, Haibo Yuan, Lilei Wang, Fuqiao Liu, Yuliang Deng, Yongwen Jiang, Yanqin Yang   +7 more
doaj   +1 more source

Identification of Characteristic Flavor Substances of Jingyang Fu Brick Tea by Gas Chromatography-Ion Mobility Spectrometry and Headspace Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry [PDF]

Shipin Kexue, 2023
In order to determine the characteristic flavor of Jingyang Fu brick tea, a national geographical indication product, the volatile compounds of Jingyang Fu brick tea, Anhua Fu brick tea and four other dark teas were analyzed by gas chromatography-ion ...
HOU Xiaohui, ZHANG Ting, ZHANG Meng, LUO Haojie, YUE Yuan, XIAO Chunge, YUE Tianli
doaj   +1 more source

Monitoring of Volatile Compounds of Ready-to-Eat Kiwifruit Using GC-IMS

Foods, 2023
Ready-to-eat kiwifruit has gained significant market value in recent years due to its convenience and the increasing consumer demand for healthy ready-to-eat snacks. The volatile compound content (VOC) in ready-to-eat kiwifruit is a crucial factor determining its flavor and aroma.
Jiajia Yuan, Hongbo Li, Shangqiao Cao, Zhenbin Liu, Na Li, Dan Xu, Haizhen Mo, Liangbin Hu   +7 more
openaire   +3 more sources

Simultaneous assessment of urinary and fecal volatile organic compound analysis in De Novo Pediatric IBD [PDF]

, 2019
Endoscopic evaluation is mandatory in establishing the diagnosis of pediatric inflammatory bowel disease (IBD), but unfortunately carries a high burden on patients.
Ayada, Ibrahim, Benninga, Marc A., Bosch, Sofie, Brizzio Brentar, Marina, Covington, James A., de Boer, Nanne K. H., de Meij, Tim G. J., el Manouni el Hassani, Sofia, Lemmen, Jesse P. M., Wicaksono, Alfian   +9 more
core   +1 more source