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Showing 1 to 12 of 180 entries
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Aroma enhancement and enzymolysis regulation of grape wine using β-glycosidase.

Food science & nutrition

Zhu FM, Du B, Li J.
PMID: 24804072
Food Sci Nutr. 2014 Mar;2(2):139-45. doi: 10.1002/fsn3.84. Epub 2014 Jan 13.

Adding β-glycosidase into grape wine for enhancing aroma was investigated using gas chromatography-mass spectrometry (GC-MS) and Kramer sensory evaluation. Compared with the extract from control wines, the extract from enzyme-treated wines increased more aromatic compounds using steam distillation extraction...

Halogen bonding versus hydrogen bonding induced 2D self-assembled nanostructures at the liquid-solid interface revealed by STM.

Physical chemistry chemical physics : PCCP

Wu Y, Li J, Yuan Y, Dong M, Zha B, Miao X, Hu Y, Deng W.
PMID: 28083588
Phys Chem Chem Phys. 2017 Jan 25;19(4):3143-3150. doi: 10.1039/c6cp08054e.

We design a bifunctional molecule (5-bromo-2-hexadecyloxy-benzoic acid, 5-BHBA) with a bromine atom and a carboxyl group and its two-dimensional self-assembly is experimentally and theoretically investigated by using scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. The supramolecular...

An Efficient Method for Calculating Powder Patterns.

Journal of magnetic resonance. Series A

Varner SJ, Vold RL, Hoatson GL.
PMID: 8980065
J Magn Reson A. 1996 Nov;123(1):72-80. doi: 10.1006/jmra.1996.0215.

A novel approach to the calculation of powder lineshapes is presented. Lineshapes from asymmetric second-rank tensor interactions are produced by summing lineshapes from symmetric tensors. This approach significantly reduces the calculation time, greatly facilitating iterative nonlinear least-squares fitting of...

Synthesis, characterization, and high-performance liquid chromatographic evaluation of C14 stationary phases containing branched and unbranched alkyl groups.

Analytical and bioanalytical chemistry

Dietrich B, Holtin K, Bayer M, Friebolin V, Kühnle M, Albert K.
PMID: 18506426
Anal Bioanal Chem. 2008 Aug;391(7):2627-33. doi: 10.1007/s00216-008-2183-9. Epub 2008 May 28.

Reversed-phase materials with branched and unbranched alkyl groups were prepared by modifying porous, spherical silica gel in a two-step reaction-immobilization of a trifunctional alkoxysilane (3-glycidoxypropyltrimethoxysilane) on the silica surface followed by reaction with a branched and an unbranched octanoic...

Ultrasound-assisted extraction of volatile compounds from wine samples: optimisation of the method.

Talanta

Cabredo-Pinillos S, Cedrón-Fernández T, González-Briongos M, Puente-Pascual L, Sáenz-Barrio C.
PMID: 18970692
Talanta. 2006 Jul 15;69(5):1123-9. doi: 10.1016/j.talanta.2005.12.011. Epub 2006 Jan 18.

This study describes a liquid-liquid extraction technique for extracting volatile compounds from wine using dichloromethane and ultrasounds. This technique permits the simultaneous extraction of different samples with high reproducibility. After the preliminary tests, several parameters (sample volume, solvent volume...

Enhanced permeability of phenylalanyl-glycine (Phe-Gly) across the intestinal membranes by chemical modification with various fatty acids.

Drug metabolism and pharmacokinetics

Yamamoto A, Morishita Y, Sugishita S, Hayami T, Okada N, Fujita T, Muranishi S.
PMID: 15618716
Drug Metab Pharmacokinet. 2003;18(1):23-32. doi: 10.2133/dmpk.18.23.

We synthesized four novel lipophilic derivatives of phenylalanyl-glycine (Phe-Gly), C4-Phe-Gly, Phe-Gly-C4, C6-Phe-Gly and C8-Phe-Gly by chemical modification with butyric acid (C4), caproic acid (C6) and octanoic acid (C8). The effect of the acylation on the stability, permeability and accumulation...

Preparation of cadmium sulfide nanoparticles in self-reproducing reversed micelles.

Journal of colloid and interface science

Dutta P, Fendler JH.
PMID: 16290439
J Colloid Interface Sci. 2002 Mar 01;247(1):47-53. doi: 10.1006/jcis.2001.8097.

Octyl octanoate (O-OL) underwent hydrolysis in sodium octanoate (NaOA) reversed micelles in 85:15 = isooctane:octanol (OL) (v/v), containing w = [H2O]/[NaOA] = 40. The products of the hydrolysis, octanoic acid (OA) and octanol (OL), lead to the formation of...

Self-assembly in surfactant-based liquid mixtures: octanoic acid/Bis(2-ethylhexyl)amine systems.

Journal of colloid and interface science

Calandra P, Liveri VT, Riello P, Freris I, Mandanici A.
PMID: 22041199
J Colloid Interface Sci. 2012 Feb 01;367(1):280-5. doi: 10.1016/j.jcis.2011.10.015. Epub 2011 Oct 14.

The physico-chemical properties of Bis(2-ethylhexyl)amine (BEEA) plus octanoic acid (OA) mixtures have been investigated by IR, SAXS, WAXS, viscosimetry, and AC complex impedance spectroscopy in the whole composition range. Mainly driven by proton transfer from the acidic OA to...

Enhancing the deperoxidation activity of cobalt(II)acetylacetonate by the addition of octanoic acid.

Chemphyschem : a European journal of chemical physics and physical chemistry

Spier E, Hermans I.
PMID: 23881854
Chemphyschem. 2013 Oct 07;14(14):3384-8. doi: 10.1002/cphc.201300460. Epub 2013 Jul 24.

The homolytic scission of peroxides with catalytic amounts of cobalt(II) complexes is used in several industrial oxidation processes. In this contribution, we report that addition of small amounts of octanoic acid significantly enhances the catalytic deperoxidation activity of the...

Investigating the role of .

Ecology and evolution

Lanno SM, Shimshak SJ, Peyser RD, Linde SC, Coolon JD.
PMID: 30847082
Ecol Evol. 2019 Jan 15;9(4):1922-1933. doi: 10.1002/ece3.4885. eCollection 2019 Feb.

The underlying genetic basis of adaptive phenotypic changes is generally poorly understood, yet a growing number of case studies are beginning to shed light on important questions about the molecular nature and pleiotropy of such changes. We use

Preparation of molecularly imprinted polymer nanobeads for selective sensing of carboxylic acid vapors.

Analytica chimica acta

Liu C, Shang L, Yoshioka HT, Chen B, Hayashi K.
PMID: 29447665
Anal Chim Acta. 2018 Jun 20;1010:1-10. doi: 10.1016/j.aca.2018.01.004. Epub 2018 Jan 30.

The detection and discrimination of volatile carboxylic acid components, which are the main contributors to human body odor, have a wide range of potential applications. Here, a quartz crystal microbalance (QCM) sensor array based on molecularly imprinted polymer (MIP)...

Biomarkers Associated with the Outcome of Traumatic Brain Injury Patients.

Brain sciences

Lorente L.
PMID: 29076989
Brain Sci. 2017 Oct 27;7(11). doi: 10.3390/brainsci7110142.

This review focuses on biomarkers associated with the outcome of traumatic brain injury (TBI) patients, such as caspase-3; total antioxidant capacity; melatonin; S100B protein; glial fibrillary acidic protein (GFAP); glutamate; lactate; brain-derived neurotrophic factor (BDNF); substance P; neuron-specific enolase...

Showing 1 to 12 of 180 entries