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FREE RADICAL [2 records]
Record 1 - internal organization data 2004-12-02
Record 1, English
Record 1, Subject field(s)
- Chemistry
- Biotechnology
Record 1, Main entry term, English
- free radical
1, record 1, English, free%20radical
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- R. 2, record 1, English, R%2E
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A molecular fragment having one or more unpaired electrons, usually short-lived and highly reactive ... In spite of their transitory existence, they are capable of initiating many kinds of chemical reactions by means of a chain mechanism. Free radicals are formed only by the splitting of a molecular bond. 3, record 1, English, - free%20radical
Record 1, French
Record 1, Domaine(s)
- Chimie
- Biotechnologie
Record 1, Main entry term, French
- radical libre
1, record 1, French, radical%20libre
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- R. 2, record 1, French, R%2E
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Fragment moléculaire possédant une durée de vie appréciable [...], formé par rupture d'une liaison dans une molécule stable, sous l'action d'une température élevée ou de divers rayonnements. 3, record 1, French, - radical%20libre
Record number: 1, Textual support number: 1 CONT
L'importance des radicaux libres dans la cinétique des réactions chimiques a été reconnue depuis longtemps. On désigne sous ce nom des espèces atomiques ou moléculaires possédant un ou plusieurs électrons non appariés, qui apparaissent de façon transitoire au sein du milieu réactionnel. 4, record 1, French, - radical%20libre
Record number: 1, Textual support number: 1 OBS
Par convention, un radical libre est indiqué par un point à droite dans le tiers supérieur de la ligne. Par exemple, le radical libre de chlore se note Cl. 2, record 1, French, - radical%20libre
Record number: 1, Textual support number: 2 OBS
Par extension de sens, le terme radical libre désigne aussi tout radical dont au moins un électron n'est pas apparié. 2, record 1, French, - radical%20libre
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Química
- Biotecnología
Record 1, Main entry term, Spanish
- radical libre
1, record 1, Spanish, radical%20libre
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Molécula altamente reactiva e inestable, debido a que le faltan o sobran electrones y busca tomarlos o liberarlos para lograr mayor estabilidad, pero que en este proceso puede causar un significativo daño a las moléculas contenidas en las células y por tanto, a las células mismas. 2, record 1, Spanish, - radical%20libre
Record 2 - internal organization data 1998-07-14
Record 2, English
Record 2, Subject field(s)
- Food Industries
Record 2, Main entry term, English
- free radicals
1, record 2, English, free%20radicals
correct, plural
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Highly reactive molecules with an impaired electron. 1, record 2, English, - free%20radicals
Record number: 2, Textual support number: 2 DEF
Toxic substances which result from cell metabolism but may also be introduced into the organism by tobacco smoke or foods. 2, record 2, English, - free%20radicals
Record number: 2, Textual support number: 1 OBS
Unstable compounds that scavenge oxygen from healthy cells, often destroying them. Free radical damage plays a role in virtually every major chronic disease and is thought to be a driving force of human aging. (Herbs for Health) 3, record 2, English, - free%20radicals
Record 2, Key term(s)
- free radical
Record 2, French
Record 2, Domaine(s)
- Industrie de l'alimentation
Record 2, Main entry term, French
- radicaux libres
1, record 2, French, radicaux%20libres
correct, masculine noun, plural
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Substances toxiques résultant du métabolisme des cellules mais pouvant également être apportées à l'organisme par la fumée de tabac ou par l'alimentation. 2, record 2, French, - radicaux%20libres
Record number: 2, Textual support number: 1 CONT
L'irrésistible affinité des radicaux libres pour un grand nombre de molécules pouvant résoudre leurs problèmes d'électrons célibataires et l'étonnante vélocité à laquelle ils opèrent, rendent les radicaux libres dangereux. Car en ajoutant ou en ôtant un électron à d'autres molécules, un radical libre va engendrer un autre radical libre dont les propriétés peuvent être destructrices. 1, record 2, French, - radicaux%20libres
Record 2, Key term(s)
- radical libre
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Industria alimentaria
Record 2, Main entry term, Spanish
- radicales libres
1, record 2, Spanish, radicales%20libres
correct, masculine noun, plural
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
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