Results 81 to 90 of about 18,909 (194)

Phytochemical composition and cultivar‐dependent variation in colored lettuce (Lactuca sativa) and their α‐amylase inhibitory activity

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND This study investigated cultivar‐dependent variation in the phytochemical composition of lettuce (Lactuca sativa) using liquid chromatography–tandem mass spectrometry (LC–MS/MS) profiling and high‐performance liquid chromatography (HPLC) quantification, with a focus on enzyme inhibitory activity. RESULTS Significant differences were
Neil Patrick Uy, Hak‐Dong Lee, Sang‐Yun Lee, Hoon Kim, Sanghyun Lee   +4 more
wiley   +1 more source

Metabolomic insights for the authentication and traceability of antibiotic‐free pork: a pilot study

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Antibiotic‐free production within the meat supply chain is a source of concern since new voluntary label claims need to be authenticated to prevent fraud. Therefore, an untargeted 1H NMR‐based metabolomics approach coupled to unsupervised (principal component analysis) and supervised (orthogonal partial least squares discriminant ...
Maria Olga Varrà, Maria Pia Fabrile, Sergio Ghidini, Augusta Caligiani, Federico Scali, Veronica Lolli, Giovanni Loris Alborali, Adriana Ianieri, Emanuela Zanardi   +8 more
wiley   +1 more source

Uma proposta experimental para o ensino de MCR-ALS [PDF]

Química Nova
Chemometrics has gained significant importance in higher education and the job market, leading to an increasing number of teaching approaches for various chemometric tools.
Nathan S. Perrud, Eduarda B. S. Cruz, Natália N. M. Deimling, Patrícia Valderrama   +3 more
doaj   +2 more sources

Cross‐regional and temporal generalizability of portable visible spectroscopy for olive maturity classification

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Olive maturity governs lot destination and the yield–quality trade‐off in olive oil production, yet it is still monitored by subjective visual scoring of the Jaén index. Spectroscopic alternatives have relied mainly on near‐infrared instruments, with scarce evidence from Brazilian orchards and almost no evaluation of spatial or ...
David Mojaravscki, Paulo S Graziano Magalhães   +1 more
wiley   +1 more source

An Introduction to the 'Special Volume Spectroscopy and Chemometrics in R' [PDF]

This special volume collates ten issues under the rubric "Spectroscopy and Chemometrics in R". In so doing, it provides an overview of the breadth, depth and state of the art of R-based software projects for spectroscopy and chemometrics applications ...
Ivo H. M. van Stokkum, Katharine M. Mullen   +1 more
core  

25 years of chemometrics in Brazil [PDF]

, 2015
Chemometric activities in Brazil are described according to three phases: before the existence of microcomputers in the 1970s, through the initial stages of microcomputer use in the 1980s and during the years of extensive microcomputer applications of ...
Scarminio, Ieda S., Barros Neto, Benício de, Bruns, Roy E.   +2 more
core   +1 more source

Analysis of Carbohydrates and Glycoconjugates by Matrix‐Assisted Laser Desorption/Ionization Mass Spectrometry: An Update for 2023–2024

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The use of MALDI mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this comprehensive review is the twelfth update of the original article published in 1999 and brings coverage of the literature to the end of 2024.
David J. Harvey
wiley   +1 more source

Mass Spectrometry in Authentication and Forensic Approaches for Determining the Origin of Hazardous Chemicals

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Identification of a chemical agent yields insights into its physicochemical properties. By examining the intrinsic characteristics and environment of a compound, information about its history can be gathered. The main objective of authentication/forensic approaches to chemicals is to trace the history of the compound's origin, regardless of ...
Carla Orlandi, Grégoire Delaporte, Christine Albaret, Emmanuel Joubert, Anne Bossée, Emilien L. Jamin, Laurent Debrauwer   +6 more
wiley   +1 more source

Aboveground herbivory elevates belowground rhizosphere volatile organic compound concentrations in ambient and polluted air, independent of volatile sampling methodology

PLANTS, PEOPLE, PLANET, EarlyView.
The effect of air pollution on plants is still underexplored, especially belowground. We used a field facility that released diesel exhaust and ozone at concentrations equivalent to those near a busy road in Reading, UK, to measure belowground gas exchange of Scots pine together with feeding by large pine weevils, a major pest of conifers.
Tihomir Simin, Luke Bell, James M. W. Ryalls, Robbie D. Girling, Oliver E. I. Welling, Neil J. Mullinger, Muhammad Usman Rasheed, James D. Blande   +7 more
wiley   +1 more source

A self-reactivated PdCu catalyst for aldehyde electro-oxidation with anodic hydrogen production

Nature Communications
The low-potential aldehyde oxidation reaction can occur at low potential (~0 VRHE) and release H2 at the anode, enabling hydrogen production with less than one-tenth of the energy consumption required for water splitting.
Ming Yang, Yimin Jiang, Chung-Li Dong, Leitao Xu, Yutong Huang, Shifan Leng, Yandong Wu, Yongxiang Luo, Wei Chen, Ta Thi Thuy Nga, Shuangyin Wang, Yuqin Zou   +11 more
doaj   +1 more source