Results 11 to 20 of about 28,309 (210)

Chemical Fingerprint Analysis for Discovering Markers and Identifying Saussurea involucrata by HPLC Coupled with OPLS-DA. [PDF]

J Anal Methods Chem, 2020
The quality control of Saussurea involucrata has been greatly improved by macroscopic and microscopic identification and chemical profiling described in Chinese Pharmacopoeia since 2005. However, these methods have their own limitations, e.g., their dependence on personal experience and expertise, and it is a huge challenge to identify closely related ...
Ma Q, Chen X, Zhang K, Yao D, Yang L, Wang H, Bulemasi S, Huang J, Wang J.   +8 more
europepmc   +5 more sources

PCA as a practical indicator of OPLS-DA model reliability. [PDF]

Curr Metabolomics, 2016
Principal Component Analysis (PCA) and Orthogonal Projections to Latent Structures Discriminant Analysis (OPLS-DA) are powerful statistical modeling tools that provide insights into separations between experimental groups based on high-dimensional spectral measurements from NMR, MS or other analytical instrumentation.
Worley B, Powers R.
europepmc   +4 more sources

Effects of Three Extraction Methods on Avocado Oil Lipid Compounds Analyzed via UPLC-TOF-MS/MS with OPLS-DA. [PDF]

Foods, 2023
Avocado oil is excellent functional oil. Effects of three extraction methods (squeezing extraction, supercritical carbon dioxide extraction, and aqueous extraction) on the species, composition, and contents of lipids in avocado oil were analyzed via ultra-performance liquid chromatography–time-of-flight tandem mass spectrometry (UPLC-TOF-MS/MS), and ...
Liu Y, Xia Q, Qian Y, Kuang Y, Liu J, Lin L.   +5 more
europepmc   +4 more sources

Using OPLS-DA to Fingerprint Key Free Amino and Fatty Acids in Understanding the Influence of High Pressure Processing in New Zealand Clams. [PDF]

Foods, 2023
This study investigated the effect of high pressure processing (HPP) on the fatty acids and amino acids content in New Zealand Diamond Shell (Spisula aequilatera), Storm Shell (Mactra murchisoni), and Tua Tua (Paphies donacina) clams. The clam samples were subjected to HPP with varying levels of pressure (100, 200, 300, 400, 500, and 600 MPa) and ...
How MS, Hamid N, Liu Y, Kantono K, Oey I, Wang M.   +5 more
europepmc   +5 more sources

Classification and characterization on sorghums based on HS-GC-IMS combined with OPLS-DA and GA-PLS. [PDF]

Curr Res Food Sci
Headspace gas chromatography-ion mobility spectrometry (HS-GC-IMS) detected 206 and 186 samples of fresh and stored sorghums respectively with three major types in Baijiu industry. The fingerprints showed the differences of volatile compounds among fresh sorghum types by qualitative analysis and artificial recognition.
Liu M, Yang Y, Zhao X, Wang Y, Li M, Wang Y, Tian M, Zhou J.   +7 more
europepmc   +4 more sources

Volatile Fingerprinting and Regional Differentiation of Safflower (<i>Carthamus tinctorius</i> L.) Using GC-IMS Combined with OPLS-DA. [PDF]

Foods
This study aimed to systematically characterize the volatile organic compound (VOC) profiles of safflower (Carthamus tinctorius L.) from eight major production regions, providing a scientific basis for quality evaluation and geographical traceability. VOC profiling was conducted using gas chromatography–ion mobility spectrometry (GC–IMS), and regional ...
Liu J, Duan H, Wang L, Qin R, Liu J, Liu H, Bao S, Yan W.   +7 more
europepmc   +3 more sources

Combining Ftir-Atr and Opls-Da Methods for Magic Mushrooms Discrimination

SSRN Electronic Journal, 2022
Magic mushrooms are naturally occurring fungi that are considered hallucinogenic drugs because they contain psilocybin and psilocin. These substances are controlled in almost every country in the world, so the use, possession, cultivation, and sale of magic mushrooms are prohibited in whole or in part.
Esteves, Cátia S.M., Redrojo, Elena M. M. de, García Manjón, José Luis, Moreno Horcajada, Gabriel Alfonso, Antunes, Filipe E., Montalvo García, Gemma, Ortega Ojeda, Fernando Ernesto   +6 more
openaire   +2 more sources

Formation Mechanism of Lipid and Flavor of Lard Under the Intervention of Heating Temperature via UPLC-TOF-MS/MS with OPLS-DA and HS-GC-IMS Analysis. [PDF]

Foods
Lard imparts unique organoleptic properties that underpin its essential role in Chinese gastronomy; however, the specific lipid precursors contributing to its aroma remain unclear. This study explores the flavor formation mechanism of lard by comparing its texture and aroma at two preparation temperatures, 130 °C and 100 °C.
Zhai E, Zhang J, Zhu J, Zhou R, Niu Y, Xiao Z.   +5 more
europepmc   +3 more sources

Metabolic Signatures of Lung Cancer in Biofluids: NMR-Based Metabonomics of Blood Plasma [PDF]

, 2011
In this work, the variations in the metabolic profile of blood plasma from lung cancer patients and healthy controls were investigated through NMR-based metabonomics, to assess the potential of this approach for lung cancer screening and diagnosis.
Ana Gomes, Ana M. Gil, António S. Barros, Asiago V. M., Bathe O. F., Bell J. D., Brian J. Goodfellow, Brière J.-J., Carrola J., Cláudia M. Rocha, Daykin C. A., Dong J., Duarte I. F., Duarte I. F., Erol A., Fan T. W. M., Fiorenza A. M., Fiorenza A. M., Freedman D. S., Gao H., Gao H. C., Gu H. W., Haffner H. T., Heber D., Iola F. Duarte, Isabel M. Carreira, Joana Carrola, João Bernardo, Jordan K. W., Keun H. C., Kochhar S., Lai H.-S., Laiakis E. C., Lin L., Lina Carvalho, Liu M., Lokhov P. G., Ludwig C., Ma Y., MacIntyre D. A., Maeda J., Muntoni S., Naini A. B., Norton J. A., Okamoto N., Pirozynski M., Psychogios N., Qiu Y. P., Ritchie S. A., Rocha C. M., Sitter B., Spratlin J. L., Sreekumar A., Stringer K. A., Thysell E., Tiziani S., Travis W. D., Trygg J., Urayama S., Vitor Sousa, Xu Q. S., Xue R., Yin P., Zhang J. A., Zhang Z. Y., Zhou J., Zira A. N.   +66 more
core   +2 more sources

Untargeted metabolomics to reveal red versus white meat‐associated gut metabolites in a prudent and western dietary context [PDF]

, 2020
Scope: To improve understanding of the epidemiological link between red and processed meat consumption and chronic diseases, more insight in the formation of metabolites during meat digestion is warranted.Methods and results: Untargeted MS ...
De Smet, Stefaan, Goethals, Sophie, Hemeryck, Lieselot, Rombouts, Caroline, Van Camp, John, Van Hecke, Thomas, Van Meulebroek, Lieven, Vanhaecke, Lynn, Vossen, Els   +8 more
core   +1 more source