Sentences with phrase «isomer in»

Dugan et al (2007) reported that the major trans isomer in beef produced from a 73 % barley grain diet is 10t - 18:1 (2.13 % of total lipid) rather than 11t - 18:1 (TVA)(0.77 % of total lipid), a finding that is not particularly favorable considering the data that would support a negative impact of 10t - 18:1 on LDL cholesterol and CVD»

«The impact of feeding practices becomes even more evident in light of recent reports from Canada which suggests a shift in the predominate trans C18: 1 isomer in grain - fed beef.

Researchers led by Ludwig - Maximilians - Universitaet (LMU) in Munich physicists Peter Thirolf, Lars von der Wense and Benedict Seiferle have now experimentally identified a long - sought excitation state, a nuclear isomer in an isotope of the element thorium (Th), which could enhance this level of accuracy by a factor of about ten.

The research team now plans to study the roles of isomer concentrations and temperature in the conversion process, the conversion of para-water to ortho («back conversion»), how to detect single ortho - and para-water molecules on surfaces, and spin isomers in other fullerene - caged molecules.

Identification, quantitative determination, and antioxidative activities of chlorogenic acid isomers in prune (Prunus domestica L.).

Not exact matches

The vitamin A activity of cis isomers of β - carotene was not included in the determination of portion sizes because of uncertainty about the bioavailability of cis - β - carotene relative to all - trans - β - carotene.

If the vitamin A activity of cis isomers of β - carotene is estimated to be one - half that of β - carotene, the total vitamin A activity would be ≈ 426 μg RE (≈ 213 RAE) in a serving of Indian spinach and ≈ 415 μg RE (≈ 208 RAE) in a serving of sweet potatoes.

It directly produces the L - isomer of Carnitine, the form found in nature.

• A 1989 study published in the Lancet found microwaving infant formula converted trans - amino acids into cis - isomers, which are classified as neurotoxins and nephrotoxins, meaning they're toxic to your nerves and kidneys respectively.10

But the atomic structures of the clusters fluctuated under the heat treatment, switching back and forth between two main atom - configurations («isomers»): these were a face - centred cubic structure, similar to a small piece of bulk gold, and a decahedral arrangement with a symmetry forbidden in an extended crystal.

Herzon and his colleagues discovered they could prepare an isomer of pleuromutilin — a compound that has the same connectivity, but with a different arrangement of atoms — and rearrange it in the final steps of the synthesis to pleuromutilin.

«As the observed NMR signal is proportional to the amount of ortho - water in the sample (para-water «NMR silent»), we can track the percentages of ortho and para isomers at any time and any temperature,» Mamone explained.

By trapping water molecules in carbon spheres and cooling them, scientists at the universities of Southampton, Nottingham and Columbia University in New York, have been able to follow the change in form (or isomer) of the molecules.

The results indicate that, in contrast to UO2 (H2O) +, the protactinium hydroxide isomer, PaO (OH) 2 +, is produced as a gas - phase species close in energy to the hydrate isomer, PaO2 (H2O) +.

The resulting nuclear isomer, Th - 229m, possesses the lowest excitation state in any known atomic nucleus.

«Most tomato lycopene that we eat exists as the all - trans isomer, a rigid and straight form, but in the bodies of regular tomato consumers, most lycopene exists as cis isomers, which tend to be bent and flexible.

The isomers differ in the position of a nitrogen - hydrogen bond in respect to the nickel center.

The theoreticians determined the barriers that kept the catalyst in the less - productive isomer forms.

When derivatives were resolved in single enantiomers, compounds with S - configuration at the chiral center showed higher CXCR4 antagonistic activity with respect to the corresponding R - isomers.

Glucosepane contains a rare isomer of imidazole, which has never before been observed in natural molecules, other than those in the glucosepane family.

The paper «Experimental determination of the energy difference between competing isomers of deposited, size - selected gold nanoclusters», by D.M. Foster, R. Ferrando and R.E. Palmer, is published in Nature Communications, volume 9, page 1323 (2018) and is available open access.

Individual CLA isomers appear to be protective or beneficial in isolated studies... but when you actually feed an animal or human a CLA supplement with the same isomer ratios (not found in nature), the benefits either disappear or get counterbalanced by a negative effect.

Resveratrol occurs in two forms, cis and trans resveratrol, the «trans» isomer is the beneficial substance that is biologically active.

Disappointments with outcomes - based studies investigating α - tocopherol are, in large part, the result of abstracting this single compound from the vitamin E family and ignoring the interplay among the eight isomers that constitute natural vitamin E. Best clinical outcomes will be achieved with vitamin E supplementation providing mixed tocopherols and tocotrienols in ratios similar to those found in nature.

Part II of this article reviews recent research on both the unique and interactive nature of the vitamin E isomers» therapeutic actions, and the ratios in which the tocopherols and tocotrienols have been found to be most bioavailable and effective.

Current research investigating the potential therapeutic actions of the other vitamin E isomers, however, clearly indicates that these compounds both potentiate and balance the actions of α - tocopherol, which, in high doses, might otherwise be detrimental.

In other research, additional vitamin E isomers have also been found to inhibit COX -2-catalyzed formation of PGE2, e.g., in one study, δ - tocopherol was an even stronger COX - 2 inhibitor than γ - tocopheroIn other research, additional vitamin E isomers have also been found to inhibit COX -2-catalyzed formation of PGE2, e.g., in one study, δ - tocopherol was an even stronger COX - 2 inhibitor than γ - tocopheroin one study, δ - tocopherol was an even stronger COX - 2 inhibitor than γ - tocopherol.

It is trans isomer of oleic acid and can be found in some meats and vegetable oils.

The pentoses in hemicellulose are usually D - sugar isomers, but it may contain some L - sugars.

There are about 3000 isomers of Vitamin D. Cod liver oil does indeed contain many of the natural forms of D2, and these are converted in the body into various needed forms of D.

This does not mean that all the trans fatty acids are in themselves harmless, but that any harmful effect is limited and balanced by the beneficial effects of, for example, trans isomers of conjugated linoleic acid (CLA) which are health - promoting with specific roles to play in our bodies.

Lycopene from heat - induced cis - isomer - rich tomato sauce is more bioavailable than from all - trans - rich tomato sauce in human subjects.

Too much of the inactive isomer will result in hypothyroid symptoms.

Effects of conjugated linoleic acid isomers on monocyte, macrophage and foam cell phenotype in atherosclerosis.

Many contain «putrid proteins,» as well as the proteins in the wrong form (isomers) so they can not be properly used by your body.

New vitamin E isomers (gamma - tocomonoenol and alpha - tocomonoenol) in seeds, roasted seeds and roasted seed oil from the Slovenian pumpkin variety «Slovenska golica».

Topics include: States of matter Diffusion Atomic Structure Separation Techniques Covalent Bonding Ionic Bonding Metallic Bonding Oxygen and Oxides Acids, Alkalis and Salts Rates of Reaction Equilibrium Energetics Organic Chemistry - alkanes, alkenes, alcohols, isomers, fractional distillation, cracking, polymerisation Chemistry in industry - Haber Process, Contact process, Extraction of Metals

Molecules can not be identified unless they are isomers or radioactively tagged and in the atmosphere, for the purpose of this debate, this is impossible.