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Janina Kühn et al.
Journal of agricultural and food chemistry, 56(21), 10218-10224 (2008-10-22)
The interactions of whey protein isolate (WPI) and flavor compounds (2-nonanone, 1-nonanal, and trans-2-nonenal) were investigated, and the influence of flavor compound structure and heat and high pressure denaturation on the interactions were determined by using headspace solid-phase microextraction (SPME)
Jian Zhao et al.
Food chemistry, 226, 51-60 (2017-03-04)
Pork of black-pig in China is well known for its quality and preferred by consumers. However, there is a lack of research on its flavors. By solvent assisted flavor evaporation combined with GC-MS, 104 volatile compounds in the stewed pork
Laura Harispe et al.
Acta tropica, 114(1), 31-36 (2009-12-26)
Glutathione transferases (GSTs) are believed to be a major detoxification system in helminths. We describe the expression and functional analysis of EgGST, a cytosolic GST from Echinococcus granulosus, related to the Mu-class of mammalian enzymes. EgGST was produced as an
Dandan Pu et al.
Foods (Basel, Switzerland), 9(4) (2020-04-08)
The key aroma compounds in smoke-cured pork leg were characterized by gas chromatography-olfactometry coupled with aroma extract dilution analysis (GC-O/AEDA), odor activity value (OAV), recombination modeling, and omission tests. Ranking analysis showed that pork leg smoke-cured for 18 days had
Pingxi Xu et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(46), 16592-16597 (2014-10-29)
Insect repellents are important prophylactic tools for travelers and populations living in endemic areas of malaria, dengue, encephalitis, and other vector-borne diseases. DEET (N,N-diethyl-3-methylbenzamide) is a 6-decade-old synthetic repellent, which is still considered the gold standard of mosquito repellents. Mosquitoes
Werner Siems et al.
Kidney & blood pressure research, 28(5-6), 295-301 (2006-03-15)
Oxidative stress often occurs in chronic hemodialysis (HD) patients. The objective of our study was to investigate the interrelationship between oxidative stress and the degree of renal anemia. In 107 consecutive HD patients, serum concentrations of two major aldehydic lipid
Dagmar Kock et al.
Journal of chemical ecology, 33(6), 1249-1256 (2007-05-15)
It has been postulated that males of a number of scorpionfly species produce sex pheromones. This is based on the observation that females often respond only to conspecific males when they evert their genital pouch, the proposed site of pheromone
Xiao Yang et al.
Foods (Basel, Switzerland), 9(2) (2020-02-26)
Thermally treated watermelon juice (TW) presents a strong unpleasant smell, resulting in poor consumer acceptance. It is necessary to identify the key off-flavor compounds in TW. Solid-phase microextraction (SPME) and solvent-assisted flavor evaporation (SAFE) coupled with gas chromatography-olfactometry-mass spectrometry (GC-O-MS)
Yunzi Feng et al.
Food chemistry, 265, 274-280 (2018-06-10)
Two types of chicken broth, broiler broth (BB) and native chicken broth (NCB), were used to analyse their differences in aroma by gas chromatography-olfactometry/mass spectrometry (GC-O/MS). NCB contained more complex volatiles and exhibited a richer aromatic profile compared with BB.
Sanjay Srivastava et al.
Methods in enzymology, 474, 297-313 (2010-07-09)
Oxidation of lipids generates large quantities of highly reactive alpha,beta-unsaturated aldehydes (enals). Enals and their protein adducts accumulate in the tissues of several pathologies. In vitro, low concentrations of enals such as HNE (4-hydroxy trans-2-nonenal) affect cell signaling whereas high
Kousuke Ishino et al.
The Journal of biological chemistry, 285(20), 15302-15313 (2010-03-11)
trans-2-Nonenal is an unsaturated aldehyde with an unpleasant greasy and grassy odor endogenously generated during the peroxidation of polyunsaturated fatty acids. 2-Nonenal covalently modified human serum albumin through a reaction in which the aldehyde preferentially reacted with the lysine residues.
Jun'ichi Mano et al.
Planta, 230(4), 639-648 (2009-07-07)
Aldehydes produced under various environmental stresses can cause cellular injury in plants, but their toxicology in photosynthesis has been scarcely investigated. We here evaluated their effects on photosynthetic reactions in chloroplasts isolated from Spinacia oleracea L. leaves. Aldehydes that are
Grace Ellis et al.
Journal of Alzheimer's disease : JAD, 22(2), 593-607 (2010-09-18)
Oxidative damage and amyloid-β (Aβ) protein misfolding are prominent features of Alzheimer's disease (AD). In vitro studies indicated a direct linkage between these two features, where lipid oxidation products augmented Aβ misfolding. We tested this linkage further, mimicking specific conditions
Linda Schreiner et al.
Scientific reports, 8(1), 8294-8294 (2018-05-31)
Being one of the most common trees in forests, Pinus sylvestris L. is a frequently used raw material for wood products. Its specific odour is, however, mostly unresolved to date. Accordingly, we investigated Scots pine wood samples grown in Germany
L F Guido et al.
Journal of chromatography. A, 1032(1-2), 17-22 (2004-04-07)
A method for the simultaneous determination of E-2-nonenal and beta-damascenone in beer by reversed-phase liquid chromatography using UV detection is presented. The method consists of beer steam distillation, followed by an extraction/concentration step using Sep-Pak Plus C18 RP cartridges and
Caterina Fattorusso et al.
Bioorganic & medicinal chemistry, 19(1), 312-320 (2010-12-03)
In our search for new antimalarial agents inspired by natural products, we describe herein the synthesis, the evaluation of in vitro antiplasmodial activity, and the SAR studies for a series of endoperoxide antimalarials based on the plakortin scaffold. These simplified
Angel Hernández-Hernández et al.
Biochimica et biophysica acta, 1726(3), 317-325 (2005-11-05)
Protein-tyrosine phosphatases (PTPs) are very susceptible to oxidation by reactive oxygen species (ROS), which induce the oxidation of catalytic cysteines, thereby inactivating these PTPs. PTPs are also inactivated by treatment with different aldehydes (such as trans-2-nonenal), produced after tissue damage
Fangfang Zeng et al.
Insect biochemistry and molecular biology, 113, 103213-103213 (2019-08-24)
Mosquitoes rely heavily on the olfactory system to find a host for a bloodmeal, plants for a source of energy and suitable sites for oviposition. Here, we examined a cluster of eight odorant receptors (ORs), which includes one OR, CquiOR1
Adriana Bravo et al.
Journal of agricultural and food chemistry, 56(11), 4134-4144 (2008-05-09)
With the aim of determining the formation of alpha-dicarbonyl intermediates during beer aging on the shelf, alpha-dicarbonyls were identified and quantified after derivatization with 1,2-diaminobenze to generate quinoxalines. The sensory effects of alpha-dicarbonyls were evaluated by the quantification of key
A M Barron et al.
Endocrinology, 150(7), 3228-3236 (2009-03-14)
The benefits of estrogen replacement as a preventative treatment for Alzheimer's disease (AD) are subject to debate. Because the effects of estrogen depletion and replacement on accumulation of the neurotoxic beta-amyloid (A beta) peptide in transgenic animal models of AD
Xiaochun Zhu et al.
Chemical research in toxicology, 22(8), 1386-1397 (2009-06-23)
Autoxidation of linoleic acid (LA) enhanced by Fe(II)/ascorbate generates unsaturated hydroperoxides which undergo further oxidative evolution resulting in a mixture of electrophiles, including epoxyketooctadecenoic acid and dienones with intact C-18 chains as well as oxidative cleavage products such as 4-hydroxy-2(E)-nonenal
Céline Davoine et al.
Plant physiology, 140(4), 1484-1493 (2006-02-28)
The response to reactive electrophile species (RES) is now considered as part of the plant response to pathogen and insect attacks. Thanks to a previously established high-performance liquid chromatography tandem mass spectrometry methodology, we have investigated the production of oxylipin
Giangiacomo Beretta et al.
Chemical research in toxicology, 20(9), 1309-1314 (2007-08-04)
Histidine-containing oligopeptides are currently studied as detoxifying agents against cytotoxic alpha,beta-unsaturated aldehydes (prototype: 4-hydroxy-2-nonenal, HNE), electrophilic end products formed by decomposition of omega-6 polyunsaturated fatty acids, associated with severe pathologies such as diabetes, nephropathy, retinopathy, and neurodegenerative diseases. This study
M Spite et al.
British journal of pharmacology, 158(4), 1062-1073 (2009-05-09)
Inflammation is associated with oxidative stress and local generation of lipid peroxidation-derived aldehydes, such as 4-hydroxy-trans-2-nonenal (HNE). In most tissues, HNE is readily conjugated with glutathione and presently it is unknown whether glutathionyl-HNE (GS-HNE) plays a functional role in inflammation.
Linda Schreiner et al.
Analytical and bioanalytical chemistry, 412(5), 1137-1149 (2020-01-12)
The significance of wood odors beyond flavoring effects for barbecues and wine aged in barrels has recently been under discussion. Wood has an immense influence on our physical and mental condition through our palate, such as positive health and mood-stimulating
Ki Mo Kim et al.
Experimental cell research, 318(2), 152-159 (2011-11-01)
Chronic high glucose levels lead to the formation of advanced glycation end-products (AGEs) as well as AGE precursors, such as methylglyoxal (MG) and glyoxal, via non-enzymatic glycation reactions in patients with diabetic mellitus. Glyoxalase 1 (GLO-1) detoxifies reactive dicarbonyls that
Kateřina Štulíková et al.
Molecules (Basel, Switzerland), 25(10) (2020-05-28)
Due to the increasing popularity of unfiltered beer, new methods for its preservation are needed. High-pressure processing (HPP) was applied as a final treatment of packed beer in order to assure storage stability and to retain the desired product quality.
Jan Hubert et al.
Experimental & applied acarology, 44(4), 315-321 (2008-04-19)
The toxicities of three plant volatiles, (2E)-hexenal, (2E, 6Z)-nonadienal and (2E)-nonenal, intermediate products of the oxylipin biosynthesis pathway, were tested on three mites of importance for medical purposes and as pests. The aldehydes were diluted in hexane separately and incorporated
Gabriela Nava et al.
Parasitology research, 101(5), 1373-1381 (2007-08-21)
Glutathione S-transferase activity has been shown to be associated with the microsomal fraction of Taenia solium. Electron microscopy and subcellular enzyme markers indicate the purity of the microsomal fraction that contains the glutathione S-transferase activity. T. solium microsomes were solubilized
I W Liaw et al.
Journal of food science, 76(8), C1188-C1194 (2012-03-16)
The flavor and flavor stability of fresh and stored liquid Cheddar and Mozzarella wheys were compared. Pasteurized, fat separated, and unseparated Cheddar and Mozzarella wheys were manufactured in triplicate and evaluated immediately or stored for 72 h at 3 °C.
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