Sentences with word «heterocyclic»

This reduces the formation of heterocyclic amines and acrylamide which are both highly carcinogenic.

A letter from the Price - Pottenger Nutrition Foundation archives suggests that Activator X is similar to or derived from «a special kind of oxygen - containing heterocyclic ring» called 6 - methoxybenzoaxazolinone which «acts as a sex - stimulant in voles.»

The reason is that muscle tissue that has been fried, grilled or barbecued until charred can form cancer - causing chemicals knowns as heterocyclic amines (HCAs).

In the case of Atta sexdens rubropilosa, substances belonging to the class of heterocyclic compounds known as pyrazines guide the ants without deviation on their way to the anthill.

N - Heterocyclic carbenes as promoters for the heterogeneous reduction of CO2 at metal electrodes.

Don't char your meat: «Those black lines and crispy bits contain heterocyclic amines [HCAs]-- compounds associated with an increased risk of breast cancer,» says Susan Levin, RD. (Grilling veggies is fine, she says, since HCAs are formed only from cooked animal muscle.)

Furthermore, many pharmaceutically relevant heterocyclic molecules are chiral, which means they are present in two mirror - image versions.

Supposedly, it forms carcinogenic compounds called heterocyclic amines (HCAs) and also components called polycyclic aromatic hydrocarbons (PAHs).

They can vary in size from just a hydrogen atom in glycine, through a methyl group in alanine, to a large heterocyclic group in tryptophan.

You know I'm a real big stickler on how the person prepares their meat so, you know - one reason why a vegetarian or vegan diet maybe beneficial for a period of time for somebody with uh - cancer would be because; we are taking out some of these environmental toxins like heterocyclic amines that are produced with a high heat cooking.

Review: discontinuation rates are the same for serotonin specific reuptake inhibitors and newer tricyclic and heterocyclic antidepressants

Successive structural modifications were focused on heterocyclic replacements of the phenyl group.

When muscle meat is cooked for an extended period of time at temperatures above 300 degrees Fahrenheit, the chemicals heterocyclic amines (HCAs) and polycyclic aromatic hydrocarbons (PAHs) are produced.

Some 60 related compounds were made involving heterocyclic rings containing 12 to 60 atoms including 4 and 10 oxygen atoms.

Meanwhile, Japanese scientists studying mice have found that certain unidentified compounds in lager and stout beer prevent DNA damage from heterocyclic amines, a class of cancer - causing chemicals found in cooked meats and fish.

Now, in the new study, the researchers have demonstrated the same task with a major family of compounds known as amines, including medicinally important heterocyclic amines.

This led to the identification of an analogue bearing a single azamacrocyclic ring AMD3465 (156) and subsequently to the design of nonmacrocyclic, orally active CXCR4 antagonists preserving a p - xylyl - enediamine linker between the two heterocyclic units of the compounds [95].

In conclusion, using AMD070 as a lead compound, several series of heterocyclic related compounds were designed and synthesized.

To improve the pharmaceutical properties of bicyclams, one or both rings were replaced by smaller heterocyclic groups.

In order to identify novel non-peptide CXCR4 ligands, the introduction of crucial functional moieties for receptor binding onto a bicyclic heterocyclic scaffold to mimic FC131's quite rigid backbone was carried out.

In red meat, cooking can also produce suspected carcinogens — in this case heterocyclic aromatic amines (HAA) and PAH.

The second molecule, a new heterocyclic ring system called a tricyclic 1,2,3,4 - tetrazine, is more like a conventional energetic in performance and safety, and forms the foundation of the synthesis of future materials of similar structure.

The azetidine ring was successfully replaced with more stable heterocyclic structures of five to seven atoms.

Probiotic microrganisms also help the body metabolize heterocyclic amines and dimethylhydrazine (fuel and photography solution)(21).

They made a series of seven new compounds, called caffeine - based gold (I) N - heterocyclic carbenes, in the laboratory and studied them.

In the Science paper, Harutyunyan and her team describe just that: the efficient creation of carbon - carbon bonds with a high chiral selectivity for a wide range of nitrogen - containing heterocyclic molecules.

Ferreira's previous research found that beer marinades effectively reduce levels of another group of carcinogens called heterocyclic amines (HCAs), which form when amino acids, sugars, and creatine in meats react at high temperatures.

When beef is overcooked it produces heterocyclic amines and polycyclic aromatic hydrocarbons which are highly carcinogenic.

17 percent higher in those estimated to have consumed the highest levels of heterocyclic aromatic amines (HAAs)-- chemicals formed when meat protein is charred or exposed to high temperatures — compared to those with the lowest intake.

Review: heterocyclic antidepressants and rational psychological therapies are effective in older patients with mild to moderate depression

«Chilling suppresses production of oxygen, nitrogen and sulfur - containing heterocyclic compounds, ketones, alcohols and aldehydes, including 13 important aroma components of tomato flavor.

The research says that concern over cancer causing compounds such as heterocyclic amines (HCAs), and polycyclic aromatic hydrocarbons), would be better directed toward educating consumers on the charring and blackening that occurs when grilling or barbecuing muscle meats, rather than cooking the meat in microwave ovens.

One study analysed the effect of an onion marinade applied to fried meat on the formation of heterocyclic aromatic amines.

In addition, cooking with high heat creates harmful chemicals called heterocyclic amines (HCAs) that the liver has to process, she explained.

The grilling of meat, poultry, and fish have been linked to heterocyclic amines (HCAs) and benzopyrene, and both have caused tumors in laboratory animals.

Almost 90 percent of known active pharmaceutical ingredients contain one or more «heterocyclic aromatic rings», structures that contain atoms of at least two different elements.

Harutyunyan needed a very strong Lewis acid to activate the heterocyclic molecules.

Combining the Grignard reagent and Lewis Acid at a low temperature activates a carbon atom adjacent to the heterocyclic ring and produces carbon - carbon bonds.