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Kye Chung Park et al.
Journal of insect physiology, 78, 33-46 (2015-05-06)
Phytophagous insects detect volatile compounds produced by host and non-host plants, using species-specific sets of olfactory receptor neurons (ORNs). To investigate the relationship between the range of host plants and the profile of ORNs, single sensillum recordings were carried out
Peter Landolt et al.
Journal of economic entomology, 107(2), 654-660 (2014-04-30)
Orange mint moths, Pyrausta orphisalis (Walker) (Crambidae), were initially trapped in a study of noctuid moth attraction to floral volatiles. A subsequent series of trapping experiments in commercial mint fields determined that phenylacetaldehyde and 4-oxoisophorone were attractive to P. orphisalis
Yang Huang et al.
Journal of food science, 75(1), C121-C127 (2010-05-25)
Cocoa beans were alkalized before or after roasting and made into cocoa liquor before analyzing by SIFT-MS. In both alkalized-before-roasting and alkalized-after-roasting samples, there were significantly higher concentrations of alkylpyrazines for the samples with pH above 7 than pH below
Marcin Horbowicz et al.
Acta biochimica Polonica, 62(2), 235-240 (2015-04-10)
Methyl jasmonate has a strong effect on secondary metabolizm in plants, by stimulating the biosynthesis a number of phenolic compounds and alkaloids. Common buckwheat (Fagopyrum esculentum Moench) is an important source of biologically active compounds. This research focuses on the
Tracey E Siebert et al.
Journal of chromatography. A, 1637, 461803-461803 (2021-01-01)
Gas chromatography-olfactometry-mass spectrometry (GC-O-MS) has been very useful in identifying aroma compounds from within the complex matrix of wine. Supplementary separation can be required to overcome co-elution of volatiles or other sensory-directed chromatographic strategies are needed, including multidimensional chromatography and
Nathalie Moreira et al.
Food chemistry, 270, 518-526 (2018-09-04)
A method based on headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography-triple quadrupole/mass spectrometry detection (GC-TQ/MS) with a prior derivatization step with O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) was developed to quantify carbonyl compounds in different categories of Port wines. Optimal extraction conditions
JianCai Zhu et al.
Journal of agricultural and food chemistry, 63(34), 7499-7510 (2015-08-11)
The aroma profile of oolong tea infusions (Dongdingwulong, DDWL; Tieguanyin, TGY; Dahongpao, DHP) were investigated in this study. Gas chromatography-olfactometry (GC-O) with the method of aroma intensity (AI) was employed to investigate the aroma-active compounds in tea infusions. The results
Ryan G Quiller et al.
Chemistry, an Asian journal, 5(1), 78-86 (2009-12-17)
We demonstrate that intermolecular interactions, controlled by both oxygen and styrene coverage, alter reaction selectivity for styrene oxidation on oxygen-covered Au(111). Several partial oxidation products are formed--styrene oxide, acetophenone, benzoic acid, benzeneacetic acid, and phenylketene--in competition with combustion. The maximum
Ka-Wing Cheng et al.
Molecular nutrition & food research, 53(6), 716-725 (2009-05-14)
Chemical model investigation showed that both epigallocatechin gallate (EGCG) and its peracetate, which has all the hydroxyl groups acetylated, effectively reduced the formation of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), the most abundant mutagenic heterocyclic amine found in foods. Mechanistic study was subsequently carried
Miklós Tóth et al.
Journal of chemical ecology, 36(6), 592-598 (2010-05-08)
In field tests in Europe, traps baited with a blend of isoamyl alcohol, acetic acid, and isobutanol (compounds previously found attractive to a number of noctuids in North America) caught the following noctuid moths: Agrotis segetum Schiff., Agrotis crassa Hbn.
Eva-Maria Kroener et al.
Food chemistry, 232, 455-465 (2017-05-12)
Horseradish (Armoracia rusticana) is a plant well known for its roots' spicy aroma. The present study investigates the main aroma constituents of horseradish roots in general by analysing the aroma profiles of six different horseradish varieties, with one variety grown
In Hee Cho et al.
Journal of agricultural and food chemistry, 54(17), 6332-6335 (2006-08-17)
The characteristic aroma-active compounds in raw and cooked pine-mushrooms (Tricholoma matsutake Sing.) were investigated by gas chromatography-olfactometry using aroma extract dilution analysis. 1-Octen-3-one (mushroom-like) was the major aroma-active compound in raw pine-mushrooms; this compound had the highest flavor dilution factor
Qiu-Hong Pan et al.
Molecular biology reports, 39(4), 4319-4325 (2011-07-27)
The pleasantly fruity and floral 2-phenylethanol are a dominant aroma compound in post-ripening 'Vidal blanc' grapes. However, to date little has been reported about its synthetic pathway in grapevine. In the present study, a full-length cDNA of VvAADC (encoding aromatic
S J Sumner et al.
Critical reviews in toxicology, 24 Suppl, S11-S33 (1994-01-01)
Styrene and styrene oxide have been implicated as reproductive toxicants, neurotoxicants, or carcinogens in vivo or in vitro. The use of these chemicals in the manufacture of plastics and polymers and in the boat-building industry has raised concerns related to
Ester Innocent et al.
Journal of insect science (Online), 10, 57-57 (2010-06-24)
In traditional African communities, repellent volatiles from certain plants generated by direct burning or by thermal expulsion have played an important role in protecting households against vectors of malaria and other diseases. Previous research on volatile constituents of plants has
Yael Grosjean et al.
Nature, 478(7368), 236-240 (2011-10-04)
Many animals attract mating partners through the release of volatile sex pheromones, which can convey information on the species, gender and receptivity of the sender to induce innate courtship and mating behaviours by the receiver. Male Drosophila melanogaster fruitflies display
Enbo Xu et al.
Journal of food science, 80(7), C1476-C1489 (2015-06-20)
Enzymatic extrusion, instead of traditional steam cooking, to treat rice is an efficient and alternative pretreatment for Chinese rice wine fermentation. In order to determine the formation of volatiles in enzymatic extrusion-processed rice wine (EE), and to confirm its characteristic
Ricardo Malheiro et al.
Journal of the science of food and agriculture, 91(9), 1693-1701 (2011-03-31)
The volatile composition of alcaparras stoned table olives produced from five of the most representative olive cultivars (cv. Cobrançosa, Madural, Negrinha de Freixo, Santulhana and Verdeal Transmontana) from the Trás-os-Montes region (north-east of Portugal) was analytically characterised using headspace-solid phase
Miklós Tóth et al.
Journal of chemical ecology, 35(4), 449-458 (2009-04-01)
In field trapping tests, the catch of Chrysoperla carnea sensu lato (Neuroptera: Chrysopidae) increased when acetic acid was added to lures with phenylacetaldehyde. The addition of methyl salicylate to the binary mixture of phenylacetaldehyde plus acetic acid increased catches even
Vaughan S Langford et al.
Journal of food science, 77(6), C719-C726 (2012-05-18)
New Zealand is a leader in the global dairy industry. Milk powder is the principal export product, but there is also a prominent cheese manufacturing industry, catering more for the domestic market. The Selected Ion Flow Tube-Mass Spectrometric (SIFT-MS) technique
William P Watson et al.
Chemical research in toxicology, 17(12), 1562-1567 (2004-12-21)
NADPH in microsomes reduces the hydroxocob(III)alamin form of vitamin B12 to cob(II)alamin and the supernucleophilic cob(I)alamin, which are both highly reactive toward xenobiotic epoxides formed by mammalian metabolism of dienes such as the industrially important chemicals chloroprene and 1,3-butadiene. With
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
Lester C-H Poon et al.
Journal of the American Chemical Society, 133(6), 1877-1884 (2011-01-27)
Diverse guanine-rich RNAs and DNAs that fold to form guanine quadruplexes are known to form tight complexes with Fe(III) heme. We show here that a wide variety of such complexes robustly catalyze two-electron oxidations, transferring oxygen from hydrogen peroxide to
Michael Gutensohn et al.
The Plant journal : for cell and molecular biology, 66(4), 591-602 (2011-02-03)
Aromatic L-amino acid decarboxylases (AADCs) are key enzymes operating at the interface between primary and secondary metabolism. The Arabidopsis thaliana genome contains two genes, At2g20340 and At4g28680, encoding pyridoxal 5'-phosphate-dependent AADCs with high homology to the recently identified Petunia hybrida
Yunzi Feng et al.
Food chemistry, 187, 44-52 (2015-05-16)
Aroma extract dilution analysis (AEDA) is widely used for the screening of aroma-active compounds in gas chromatography-olfactometry (GC-O). In this study, three aroma dilution methods, (I) using different test sample volumes, (II) diluting samples, and (III) adjusting the GC injector
Fong Lam Chu et al.
Journal of agricultural and food chemistry, 56(22), 10697-10704 (2008-10-29)
Benzaldehyde, a potent aroma chemical of bitter almond, can also be formed thermally from phenylalanine and may contribute to the formation of off-aroma. To identify the precursors involved in its generation during Maillard reaction, various model systems containing phenylalanine, phenylpyruvic
Rajib Saha et al.
PloS one, 6(7), e21784-e21784 (2011-07-15)
The scope and breadth of genome-scale metabolic reconstructions have continued to expand over the last decade. Herein, we introduce a genome-scale model for a plant with direct applications to food and bioenergy production (i.e., maize). Maize annotation is still underway
Yuko Nukada et al.
The Journal of toxicological sciences, 36(3), 313-324 (2011-06-02)
Contact allergens induce the augmentation of cell surface molecules on and release of cytokines from Langerhans cells (LC) in skin sensitization. THP-1 and U937 cell lines, surrogates of LC, were used as analytical tools of this phenomenon recently. In THP-1
The role of two plant-derived volatiles in the foraging movement of 1st instar Helicoverpa armigera (Hubner): time to stop and smell the flowers.
Perkins LE, et al.
Arthropod-Plant Interactions, 3(3), 173-179 (2009)
Daihua Hu et al.
Natural product communications, 8(3), 393-396 (2013-05-18)
Attraction of the soybean pod borer, Leguminivora glycinivorella (Matsumura), an economically important pest of soybean, to nine plant volatiles, alone or combined with two kinds of synthetic sex pheromone, ((E,E)-8,10-dodecadienyl acetate (EE8,10-12:Ac), or a blend of EE8,10-12:Ac and (E)-10-dodecenyl acetate
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