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CRUDE EXTRACT [6 records]

Record 1 2011-12-16

English

Subject field(s)
  • Medication
OBS

Activation of T and B cells by a crude extract of Artocarpus integrifolia is mediated by a lectin distinct from jacalin.(Source : Journal of immunological methods, 1991, 140(2) p. 197-203.

French

Domaine(s)
  • Médicaments
DEF

substance extraite des fruits du jacquier, arbre tropical voisin de l'arbre à pain, [qui] protège les lymphocytes T4 (cellules du système immunitaire) contre le virus du SIDA.

Spanish

Save record 1

Record 2 2011-01-05

English

Subject field(s)
  • Biological Sciences
DEF

Preparation made from biological material in which the cells have been disrupted and the cellular debris removed by centrifugation or precipitation, but little (if any) further attempt has been made to purify the sample.

CONT

By applying quantitative assay methods to determine the amount of catalytic activity present in different protein fractions obtained from cells or tissues..., it is possible to purify enzymes and ultimately obtain them in homogeneous form... It should be kept in mind that a crude extract of bacterial cells or of a plant or animal tissue may contain several hundred different proteins, most of them enzymes, whose solubility and acid-base properties do not differ widely. Therefore purification of a single enzyme from such an extract requires an empirical choice of a sequence of separation procedures to exploit differences in properties between the enzyme to be isolated and all the other proteins present.

French

Domaine(s)
  • Sciences biologiques
CONT

En appliquant des [...] méthodes spécifiques de dosage à des fractions protéiques séparées [...] il est possible de purifier les enzymes et de les isoler sous une forme homogène. [...] Il faut se souvenir qu'un extrait brut de cellules bactériennes ou de tissus végétaux ou animaux contient plusieurs centaines de protéines différentes qui sont pour la plupart des enzymes; leur solubilité ainsi que leurs propriétés acidobasiques ne diffèrent pas beaucoup. C'est pourquoi, la purification d'un seul enzyme à partir d'un tel extrait nécessite un choix empirique dans l'ordre des techniques de séparation utilisées, de façon à exploiter les différences de propriétés entre l'enzyme à isoler et toutes les autres protéines présentes.

Spanish

Save record 2

Record 3 2003-11-28

English

Subject field(s)
  • Animal Feed (Agric.)
  • Animal Science
  • Biochemistry
CONT

Nitrogen-free extract comprises sugars, starch and a large part of the material classed as hemicellulose. Determined by subtracting the sum of water, ash, protein, fat and crude fibre of feed from 100. Since it is determined by difference, it includes the cumulative errors of the other determinations.

Key term(s)
  • nitrogen free extract

French

Domaine(s)
  • Alimentation des animaux (Agric.)
  • Zootechnie
  • Biochimie
DEF

Notion classiquement utilisée en zootechnie, correspondant à la fraction la plus mal définie d'une production alimentaire... obtenue ... par différence après avoir dosé la cellulose brute, les protéines, les lipides et les cendres.

Key term(s)
  • extrait non azoté

Spanish

Campo(s) temático(s)
  • Alimentación animal (Agricultura)
  • Zootecnia
  • Bioquímica
Save record 3

Record 4 2003-06-25

English

Subject field(s)
  • Analytical Chemistry
  • Animal Feed Processing Equipment
DEF

... the collective name for moisture (water), lipids, protein, carbohydrates and ash.

CONT

Proximates. Soyabean seeds mainly consist of proteins, lipids, carbohydrates and minerals. Proteins and lipids are the two most important fractions commercially, accounting for more than 60 % of the grain weight. Soyabeans can vary in content due to both varietal differences and environmental factors which affect the overall seed composition. The proximate analyses are commonly conducted on animal feed stuffs ...

OBS

Proximate analysis [is] a chemical scheme for evaluating feedstuffs, in which a feed is partitioned into the six fractions : 1) Moisture; 2) Total(Crude) Protein; 3) Fat; 4) Ash; 5) Crude Fiber; and 6) Nitrogen-Free Extract(NFE).

OBS

proximate: usually in the plural.

Key term(s)
  • proximate

French

Domaine(s)
  • Chimie analytique
  • Alimentation des animaux (Matériel)
CONT

Physiologie de la digestion des nutriments énergétiques; métabolismes et structures chimiques des macronutriments (protéines, glucides, lipides) et micronutriments (vitamines, minéraux et oligo-éléments); [...]

OBS

[L'Organisation des Nations Unies pour l'alimentation et l'agriculture, la FAO, rend le terme «promimate» par grossière]. Proximate analysis of the diets and their nutritive value. [...] Analyse grossière et valeur nutritive des régimes expérimentaux. [...] Análisis general de las dietas y de su valor nutritivo.

OBS

Le terme macronutriment est, le plus souvent, utilisé au pluriel. Il ne correspond pas exactement au terme «proximate» au sens de macromolécules, car il n'inclut pas les cendres «ash».

Key term(s)
  • macronutriments

Spanish

Save record 4

Record 5 1997-12-02

English

Subject field(s)
  • Titles of Federal Government Programs (Canadian)
  • Petroleum Asphalts
OBS

A project to extract synthetic crude oil from the Athabasca oil sands in Alta; located near Fort McMurray...

Key term(s)
  • Syncrude

French

Domaine(s)
  • Titres de programmes fédéraux (Gouvernement canadien)
  • Bitumes

Spanish

Save record 5

Record 6 1991-10-28

English

Subject field(s)
  • Organizations, Administrative Units and Committees
  • Petroleum Asphalts
OBS

10030, 107th St, Edmonton T5J 3E5... Operations : A project to extract synthetic crude oil from the Athabasca oil sands in Alta; located near Fort McMurray, construction began 1973 & came on stream July 31, 1978 at cost of $2. 3 billion. Consists of one of the largest open pit mines in the world(25 km area), with capacity to prod 92 million tonnes oil sand per year.

Key term(s)
  • Syncrude

French

Domaine(s)
  • Organismes, unités administratives et comités
  • Bitumes
OBS

Renseignement obtenu de l'organisme.

Key term(s)
  • Syncrude Canada

Spanish

Save record 6

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