A5103054586- Phytochemicals and Antioxidant Activities
- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Phytochemical compounds biological activities
- Essential Oils and Antimicrobial Activity
- Protein Hydrolysis and Bioactive Peptides
- Meat and Animal Product Quality
- Natural product bioactivities and synthesis
- Marine Sponges and Natural Products
- Biochemical Analysis and Sensing Techniques
- Greenhouse Technology and Climate Control
- Plant Stress Responses and Tolerance
- Fatty Acid Research and Health
- Phytochemistry and Biological Activities
- Aquaculture Nutrition and Growth
- Horticultural and Viticultural Research
- Phytoestrogen effects and research
- Agricultural and Food Sciences
- Antioxidant Activity and Oxidative Stress
- Microbial Inactivation Methods
- Membrane-based Ion Separation Techniques
- Phosphorus compounds and reactions
- Tea Polyphenols and Effects
- Prenatal Screening and Diagnostics
- Electrochemical sensors and biosensors
Centre de Recherche Industrielle du Québec
2020-2022
NanoQuébec (Canada)
2022
Université Laval
1991-2021
Pfizer (United States)
2001-2012
Université de Sherbrooke
2001-2005
University of Guelph
1974
The chemical composition and in vitro antioxidant capacity (AC) of the two most commercialized species jaboticaba, Sabará (Myrciaria jaboticaba) Paulista cauliflora), were compared different fruit parts (skin, pulp seeds) at ripening stages. Both presented similar mineral centesimal compositions, found to be rich sources Mn (1.8–2.7 mg/100 g DW) Cu (1.0 DW). Except for anthocyanins, phenolic concentrations greater amounts than Paulista. Ellagic acid derivatives (EA) contents varied according...
The temperature dependence of mesophyll conductance (gm ) was measured in well-watered red raspberry (Rubus idaeus L.) plants acclimated to leaf-to-air vapour pressure deficit (VPDL) daytime differentials contrasting amplitude, keeping a fixed diurnal leaf (Tleaf rise from 20 35 °C. Contrary the great majority gm responses published date, we found pronounced reduction with increasing Tleaf irrespective chamber O2 level and VPDL regime. Leaf hydraulic greatly enhanced during warmer afternoon...
Plant phenolic compounds are suggested to exert pharmacological activities in regards obesity and type-2 diabetes, but their mode of action is poorly understood due a lack information about bioavailability. This work aimed study the bioavailability GlucoPhenol compounds, strawberry-cranberry extracts blend, by characterizing plasma profile obese rats. A comparison was performed co-supplementation with an onion extract. Using optimized μSPE-UHPLC-MS/MS method, 21 metabolites were...
Acute or chronic (15 days) co-administration of blueberry and grape extracts in mice enhanced the absorption phenolic compounds.
The anthocyanins from the purple grumixama phenolic extract is responsible for reducing obesity and insulin resistance.
Growth chamber studies were undertaken to determine relationships between leaf respiration and transpiration in the dark, water potential. Leaf cuticular resistances calculated. Two lines of corn (Zea mays L.), one a wilting inbred line, Q188, other, DR1, an line known have at least some heat drought tolerance under field conditions used this study. Differences found dark magnitude vapor diffusion these lines. Dark occurred greater rate Q188 than DR1. Both showed decreased as potentials not...
An advanced intermediate to the highly oxygenated triterpene quassinoids was prepared in 14 steps from tetrahydrofuran. The key are three diene-transmissive Diels−Alder cycloadditions. Several features of this synthesis noteworthy, including a successful Mitsunobu reaction on an allenylic alcohol, rare [4 + 2] cycloaddition involving enethiol ether dienophile, and complete control over all 10 chiral centers created.
Several tetracyclic molecules were prepared by diene-transmissive DielsAlder cycloadditions. Control over the stereochemical outcome of cycloaddition was achieved and structural features precursors affecting stereochemistry is discussed. Useful information gathered concerning factors governing this stereocontrol, which will be indispensable for future strategy.Key words: quassinoid, anticancer agent, cycloaddition, oxadiene, hetero DielsAlder.
Herring milt hydrolysate (HMH), like many fish products, presents the drawback to be associated with off-flavors. As odor is an important criterion, effective deodorization method targeting volatile compounds responsible for off-flavors needs developed. The potential of electrodialysis (ED) remove 15 identified, in first part this work, their main contribution HMH, as well trimethylamine, dimethylamine and trimethylamine oxide, was assessed by testing impact both pH (4 7) current conditions...
Relationships between (1) photosynthesis (2) transpiration (3) total diffusive resistance to water vapor and (4) mesophyll leaf potential were examined in two lines of corn (Zea mays L.) differing phenotypic response stress. One line (Q-188) was a wilting inbred the other (DR-1) an known have at least some heat drought under field conditions. No differences found net photosynthetic rate, rate high or low potentials light. In both lines, stomatal closure began occur − 8.5 9.5 bars. Similarly,...
The aim of this work was to determine the structural characteristics condensed tannins isolated from aqueous extract black spruce (Picea mariana Mill) bark. This is first report on characterization hot water prepared Picea bark were by column chromatography Sephadex LH-20 media. In study, UV-visible and 13C-NMR spectroscopic techniques, along with pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) liquid chromatogramphy analyses applied tannins. We have confirmed for time presence...
Determinations of plant resistance to water flow from measurements leaf potential at steady transpiration rates were made on different lines corn (Zea mays L.). Two inbreds, Q188, a wilting mutant, and DR1, an inbred line shown have least some heat drought tolerance under field conditions, compared commercial single-cross hybrid, United 106. The purpose the experiment was isolate cause characteristic Q188. A linear relationship found between rate for all lines. No gradients zero...
Abstract Cyclic fatty acid monomers ( CFAM ) generated through domestic or industrial heating of vegetable oils may alter liver enzymes and induce hepatomegaly steatosis, but the underlying mechanisms are not clearly understood. This study aimed to assess effects on plasma lipids determine whether these modulated by dietary lipids. Thirty‐six (36) male Wistar rats were fed either four isoenergetic diets consisting canola oil soybean with/without 500 mg/100 g total fat for 28 days. Rats had...
Abstract Ethanolic crude extract prepared from autumn‐shed leaves of sugar maple ( Acer saccharum Marsh.) was recently shown to have antibacterial activity against Pseudomonas cichorii and Xanthomonas campestris pv. vitians , two bacteria causing diseases in lettuce production. In this study, (SMASL) further investigated. SMASL ethanolic fractionated using HPLC system geraniin identified as the compound by UPLC/Q‐Tof‐MS system. Geraniin, an ellagitannin, then purified a glass chromatographic...