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Showing 1-30 of 77 results for "PHR1091" within Papers
Nicholas J Walton et al.
Phytochemistry, 63(5), 505-515 (2003-06-18)
Vanillin (4-hydroxy-3-methoxybenzaldehyde) is an important flavour and aroma molecule, but is also of interest because of its biogenetic relationship to the phenylpropanoid pathway and to other molecules of physiological significance, notably salicylate. Recent progress towards characterisation of the biosynthesis of
Meng Li et al.
Bioresource technology, 167, 14-23 (2014-06-27)
Sweet sorghum has been regarded as a typical species for rich soluble-sugar and high lignocellulose residues, but their effects on biomass digestibility remain unclear. In this study, we examined total 63 representative sweet sorghum accessions that displayed a varied sugar
Choon Young Lee et al.
Biochimie, 111, 125-134 (2015-02-11)
Numerous studies have reported the beneficial effects of antioxidants in human diseases. Among their biological effects, a majority of antioxidants scavenge reactive radicals in the body, thereby reducing oxidative stress that is associated with the pathogenesis of many diseases. Antioxidant
N J Walton et al.
Current opinion in biotechnology, 11(5), 490-496 (2000-10-12)
Microorganisms able to produce vanillin in excess of 6g/l from ferulic acid have now been isolated. In Pseudomonas strains, the metabolic pathway from eugenol via ferulic acid to vanillin has been characterised at the enzymic and molecular genetic levels. Attempts
Jatinder Kumar et al.
PloS one, 9(6), e98696-e98696 (2014-06-18)
Fourteen saxicolous lichens from trans-Himalayan Ladakh region were identified by morpho-anatomical and chemical characteristics. The n-hexane, methanol and water extracts of the lichens were evaluated for their antioxidant capacities. The lichen extracts showing high antioxidant capacities and rich phenolic content
K Ponnusamy et al.
World journal of microbiology & biotechnology, 29(9), 1695-1703 (2013-03-30)
Biofouling is a serious problem on filter membranes of water purification systems due to formation of bacterial biofilms, which can be detrimental to the membrane performance. Biofouling occurs on membrane surface and therefore greatly influences the physical and chemical aspects
Aditya M Kunjapur et al.
Journal of the American Chemical Society, 136(33), 11644-11654 (2014-07-31)
Aromatic aldehydes are useful in numerous applications, especially as flavors, fragrances, and pharmaceutical precursors. However, microbial synthesis of aldehydes is hindered by rapid, endogenous, and redundant conversion of aldehydes to their corresponding alcohols. We report the construction of an Escherichia
Guy L Plourde et al.
Molecules (Basel, Switzerland), 18(1), 1174-1180 (2013-01-25)
A short five steps synthesis of the title compound from vanillin is described. The racemic spiroether 7 was obtained in 61% yield and in >99% diastereomeric excess (by 1H-NMR) from the corresponding phenolic derivative 3 by oxidation with lead (IV)
María de la Luz Cádiz-Gurrea et al.
International journal of molecular sciences, 15(11), 20382-20402 (2014-11-11)
The consumption of polyphenols has frequently been associated with low incidence of degenerative diseases. Most of these natural antioxidants come from fruits, vegetables, spices, grains and herbs. For this reason, there has been increasing interest in identifying plant extract compounds.
Hanen Bouaziz-Ketata et al.
Indian journal of experimental biology, 53(4), 208-215 (2015-05-28)
In this study, we report isolation of flavonoids, viz., 3-O-methylquercetin, tangeritin, luteolin-7-O-glucoside, luteolin, apigenin-7-O-glucoside, apigenin-8-C-glucoside, luteolin-8-C-glucoside, luteolin-6-C-glucoside, diosmetin and catechin from the methanolic extract of Hyparrhenia hirta employing high performance liquid chromatography and liquid chromatography-electrospray ionization-tandem mass spectrometry. The total
Faiyaz Shakeel et al.
Food chemistry, 180, 244-248 (2015-03-15)
The solubility of vanillin in ten different environmentally benign solvents namely water, ethanol, ethylene glycol (EG), ethyl acetate (EA), isopropanol (IPA), propylene glycol (PG), polyethylene glycol-400 (PEG-400), Transcutol, butanol-1 and butanol-2 was measured and correlated at T=(298-318)K. The resulting experimental
Yongsheng Chen et al.
PloS one, 9(9), e108140-e108140 (2014-09-23)
Increased consumption of vegetables or plant food has been associated with decreased risk of developing major chronic diseases, such as cancers, diabetes, cardiovascular diseases, and age-related functional decline. Ramie leaves are rich in phenolics and flavonoids, which have been suggested
Nasser M Al-Daghri et al.
BMC complementary and alternative medicine, 12, 202-202 (2012-11-01)
Drugs used both in classical chemotherapy and the more recent targeted therapy do not have cancer cell specificity and, hence, cause severe systemic side effects. Tumors also develop resistance to such drugs due to heterogeneity of cell types and clonal
Huihui Ti et al.
Food chemistry, 178, 186-194 (2015-02-24)
The phytochemical profile and antioxidant activities of unprocessed and extruded milled fractions of black rice were investigated. Extrusion increased the free phenolics, anthocyanins and oxygen radical absorbance capacity (ORAC) and decreased the bound forms. The total phenolics, anthocyanins and ORAC
Zhenchang Liang et al.
PloS one, 9(8), e105146-e105146 (2014-08-19)
Grapes are rich in phytochemicals with many proven health benefits. Phenolic profiles, antioxidant and antiproliferative activities of twenty-four selected Vitis vinifera grape cultivars were investigated in this study. Large ranges of variation were found in these cultivars for the contents
Ket Li Ho et al.
Journal of medicinal food, 15(12), 1096-1102 (2012-12-12)
Vanillin is the substance responsible for the flavor and smell of vanilla, a widely used flavoring agent. Previous studies reported that vanillin is a good antimutagen and anticarcinogen. However, there are also some contradicting findings showing that vanillin was a
Janique Vandal et al.
Pharmaceutical biology, 53(6), 800-806 (2015-02-24)
The number of multidrug resistant (MDR) microorganisms is increasing and the antimicrobial resistance expressed by these pathogens is generating a rising global health crisis. In fact, there are only a few antimicrobial agents left that can be used against MDR
F Liu et al.
Computer methods and programs in biomedicine, 118(2), 134-146 (2015-01-13)
Metabolic Engineering (ME) aims to design microbial cell factories towards the production of valuable compounds. In this endeavor, one important task relates to the search for the most suitable heterologous pathway(s) to add to the selected host. Different algorithms have
Jinming Zhang et al.
Bioresource technology, 121, 369-378 (2012-08-07)
Candida athensensis SB18 is potential xylitol producing yeast isolated in Singapore. It has excellent xylose tolerance and is able to produce xylitol in high titer and yield. However, by-products, such as phenolic compounds, derived in lignocellulosic biomass hydrolysate might negatively
Maarit Lahtinen et al.
Organic & biomolecular chemistry, 11(33), 5454-5464 (2013-07-16)
Laccases (EC 1.10.3.2) are multicopper oxidases, which can oxidize phenolic substrates by the concomitant reduction of oxygen to water. The phenolic substructures of lignin are also oxidized by laccases, resulting mainly in various polymerized products. Several model compound studies indicate
Dolor Renko et al.
European journal of medicinal chemistry, 90, 834-844 (2014-12-22)
Potent anticancer 4-arylchromene agents 6, as restricted isoCA-4 analogues, were prepared with excellent yields by a rapid and versatile synthetic pathway. First, in the presence of PTSA in EtOH, a variety of arylalkynols 9 were transformed into substituted 4-chromanones 10
Baljinder Kaur et al.
Applied biochemistry and biotechnology, 169(4), 1353-1372 (2013-01-12)
Vanillin is one of the most widely used flavoring agents in the world. As the annual world market demand of vanillin could not be met by natural extraction, chemical synthesis, or tissue culture technology, thus biotechnological approaches may be replacement
Kenji Takahashi et al.
Biodegradation, 25(5), 735-745 (2014-06-12)
Sphingobium sp. strain SYK-6 is capable of degrading various lignin-derived biaryls. We determined the catabolic pathway of a phenylcoumaran-type compound, dehydrodiconiferyl alcohol (DCA) in SYK-6, and identified some of the DCA catabolism genes. In SYK-6 cells, the alcohol group of
Inthawoot Suppavorasatit et al.
Journal of food science, 78(1), C1-C7 (2013-01-03)
The effect of enzymatic deamidation by protein-glutaminase (PG) on protein solubility and flavor binding potential of soymilk was studied. Treatment of soymilk with PG for 2 h (temperature of 44 °C and enzyme:substrate ratio (E/S) of 40 U/g protein) resulted
Salakatte Thammaiah Harini et al.
Bioorganic & medicinal chemistry letters, 22(24), 7588-7592 (2012-11-03)
The study has been achieved the efficient synthesis of vanillin derived piperidin-4-one oxime esters (5a-m) via four step reaction involved Mannich reaction of vanillin, acetone and ammonium acetate to obtain 2,6-bis(4-hydroxy-3-methoxyphenyl)-piperidin-4-one 2 followed by N-methylation and oximation. Further, to enhance
Helena Maruenda et al.
Food chemistry, 138(1), 161-167 (2012-12-26)
This study provides the first chemical investigation of wild-harvested fruits of Vanilla pompona ssp. grandiflora (Lindl.) Soto-Arenas developed in their natural habitat in the Peruvian Amazon. Flowers were hand-pollinated and the resulting fruits were analysed at different developmental stages using
Silvia A Coran et al.
Journal of pharmaceutical and biomedical analysis, 70, 647-651 (2012-07-31)
A novel HPTLC-densitometric method was developed for separation and quantitation of primulasaponin I and II in different matrices. HPTLC silica gel 60 F254(S), 20 cm × 10 cm, plates with ethyl acetate:water:formic acid (5:1:1 v/v) as the mobile phase were
Marely G Figueroa-Pérez et al.
Journal of agricultural and food chemistry, 62(49), 12027-12033 (2014-12-03)
Peppermint (Mentha piperita) infusions represent an important source of antioxidants, which can be enhanced by inducing abiotic stress in plants. The aim of this study was to evaluate the effect of drought stress on peppermint cultivation as well as the
Ana Rita Brochado et al.
Biotechnology and bioengineering, 110(2), 656-659 (2012-09-26)
Overproduction of a desired metabolite is often achieved via manipulation of the pathway directly leading to the product or through engineering of distant nodes within the metabolic network. Empirical examples illustrating the combined effect of these local and global strategies
José E Galgani et al.
Food & function, 3(12), 1319-1323 (2012-09-26)
The inhibition of NADPH oxidase has become a potential therapeutic target for oxidative stress-related diseases. We investigated whether vanillin modifies hepatic O(2) consumption associated with Kupffer cell functioning. The influence of vanillin on Kupffer cell functioning was studied in isolated
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