MARC details
| 000 -LEADER |
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| fixed length control field |
02200nam a2200277Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250625162434.0 |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
B-19655 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT |
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| Title |
Purification of Alkaloids by Countercurrent Chromatography |
| 490 0# - SERIES STATEMENT |
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| Volume/sequential designation |
Revista Brasileira de Farmacognosia, 31, p.625-647, 2021 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Alkaloids are nitrogen-containing compounds of the secondary metabolism of plants and microorganisms, which can also be found in animals, insects, and marine organisms. Because of the presence of one or more nitrogen atoms in the molecule, these compounds can form salts in the presence of acids, which are soluble in water and not in organic solvents. This characteristic is useful for their extraction from the matrix source and is explored in liquid-liquid partitioning techniques like countercurrent chromatography. Solvent systems used in classic purifications of alkaloids by this separation technique consist of an organic solvent such as chloroform or dichloromethane and a water buffer where the pH varies along the purification. The addition of other organic solvents like methanol and other alcohols to the solvent system is discussed, as well as the use of less polar systems. Recently developed techniques in countercurrent separations, such as pH-zone-refining countercurrent chromatography, are also presented. This comprehensive review covers the early work on separation of alkaloids with the Craig and Post apparatus and the evolution in the use of modern equipment for the isolation and purification of this class of bioactive natural products. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
BASIC NATURAL PRODUCTS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
CENTRIFUGAL PARTITION CHROMATOGRAPHY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
HIGH-SPEED COUNTERCURRENT CHROMATOGRAPHY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
PH ADJUSTMENT |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
QUATERNARY ALKALOIDS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
SOLVENT SYSTEM |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Leitão, G. G. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Leal, C. M. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Mendonça, S. C. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Pereda-Miranda, R. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/1nYHmBLq_OAU0cqs1oGandsyjfzzyw18f/view?usp=drivesdk">https://drive.google.com/file/d/1nYHmBLq_OAU0cqs1oGandsyjfzzyw18f/view?usp=drivesdk</a> |
| Public note |
Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Clasificación local |
| Koha item type |
Documentos solicitados |
