| 词汇 | ketone |
| 释义 | ketone noun[ C ] uk /ˈkiː.təʊn/ us /ˈkiː.toʊn/ a type of chemical compound containing carbon, produced in the body when it burns fat酮 Chemistry: types of chemical acid salt aerogel albumin alkali metal alkaline alkaloid antioxidant carbohydrate homologous series inorganic isopropanol lectin melamine methyl orange monosaccharide mothball propellant saline soluble sulphide ketone | American Dictionaryketone noun[ C ] us/ˈki·toʊn/ chemistry a chemical substance that contains carbon and oxygen, used in industry Examples of ketoneketone Changes in orangutan caloric intake, energy balance, and ketones in response to fluctuating fruit availability. Consequently, the presence of aldehydes and ketones found in meteorites cannot be considered as proof that they are precursors of amino acids. The latter compounds are typical by-products of bacterial metabolism and include aldehydes, esters, ketones and short-chain alcohols. The metabolic screening included blood glucose, lactate, pyruvate and ketone body, total and free camitinc levels. Subsequent evolution of oxygenase enzymes in plants resulted in the transformation of p-hydroxycinnamic acid into raspberry ketone and methyl eugenol (figs 2, 3). Cuelure is not known to occur in nature and is only found in its analogous form as raspberry ketone. Inactivation of interleukin-ip converting enzyme by peptide (acyloxy)methyl ketones. For the third compound, the ketone, either hypothesis is plausible. Changes in orang-utan caloric intake, energy balance, and ketones in response to fluctuating fruit availability. The second reason why the cytosolic concentration of pyruvate is expected to be lower in infected animals has to do with the synthesis of ketone bodies. Increased production of ketone bodies and the need for these compounds in extra-hepatic tissues would result in an increase in the rate of export of acetoacetate out of hepatic mitochondria. Both of the sulphides and isobutenyl methyl ketone were never detected in the healthy seeds and were only found in the seeds infested by the bruchid larvae. A ketone will give a negative result because it can not be oxidized easily. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One of the greatest advantages of this method is its compatibility with unsaturated ketones. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is a double-unsaturated ketone that does not occur in nature. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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