Anales RANF

Purificación Sáez-Plaza, Agustín García Asuero, Julia Martín @Real Academia Nacional de Farmacia. Spain 18 (35, 36) el término de gen en 1909. Oesper (37), Veibel (38), Szabadvary (14), Ottesen (39), Burns (2), Rancke- Madesn y Chalmers (40), Szabadvary (41), Pérez- Bustamante (42) y Sella (43) han dado detalles de la vida de Kjeldahl. Kjeldahl fue elegido miembro de las academias científicas de Dinamarca y Christiania (Norwegian Academy of Sciences and Letters), y recibió un doctorado honorario de la Universidad de Copenhagen (2, 37). 7. COMENTARIOS FINALES A pesar de su antiguiedad el método de Kjeldahl conserva su importancia. Conviene resaltar que Kjeldahl llevaba a cabo el acabado analítico mediante una reacción iodométrica. Kjeldahl (como Nessler) ha sido verbalizado, un honor raramente asociado a un químico (38). Todos los químicos comprenden lo que significa cuando se dice que una sustancia ha sido kjeldalizada (2, 38), o que uno kjeldaliza una muestra (44). Kjeldahl fue antecesor de S.P.L. Sörensen como Jefe del Laboratorio Carlsberg de Copenhague, que introdujo la notación de pH (44, 45). 8. REFERENCIAS 1. Kjeldahl J. Neue Methode zur Bestimmung des Stickstoffs in organischen Körpern. Z Anal Chem 1883; 22: 366-82; En ny Methode til Kvaelstofbestemmelsei organiske Stoeffer. Medd Carlsb Lab 1883; 2(1): 1-27; Sur une Nouvelle Méthode de Dosage de l’Azote dans les Substances Organiques (French summary: Résumé du CR Trav Lab Carlsb; separately paged section) 1883; 2: 1-12. 2. Burns DT. Kjeldahl, the Man, the Method and the Carlsberg Laboratory. Anal Proceed 1984; 21(6): 210- 4. 3. Kjeldahl J. New Method for the Determination of Nitrogen. Chem News 1883; 48(1240): 101-2. 4. Analyst Ed. On Kjeldahl method for determination of nitrogen. Analyst 1885; 10(6); 127-8. 5. Kebler JF. Notes on the Estimation of Nitrogen in Nitrates by Kjeldahl’s Method, and an Index to the Literature on the Estimation of Nitrogen. J Anal Appl Chem 1891; 5: 257–78. 6. Zelitch I. Hubert Bradford Vickery 1893–1978, Biographical Memoir. Washington, DC: National Academy of Sciences 1985. 7. Moore JC, DeVries W, Lipp M, Griffiths JC, Abernethy DR. Total Protein Methods and Their Potential Utility to Reduce the Risk of Food Protein Adulteration. Compr Rev Food Sci Food Saf 2010; 9(4): 330–57. 8. Möller J. Protein Analysis Revisited. Focus 2010; 34(2): 22– 3. 9. Mariotti F, Tome D, Mirand PP. Converting Nitrogen into Protein—Beyond 6.25 and Jones’ Factor. Crit Rev Food Sci Nutr 2008; 48(2): 177–84. 10. Greenfield H, Southgate DAT. Review of Methods of Analysis. In Food Composition Data. 2nd ed. Roma: Production, Management and Use, FAO 2003: Ch. 7, pp. 97–148. 11. Sáez-Plaza P, Michalowski T, Navas MJ, Asuero AG, Wybraniec S. An overview of the Kjeldahl method of nitrogen determination. Part I. Early history, chemistry of the procedure, and titrimetric finish. Crit Rev Anal Chem 2013; 43(4): 178-223. 12. McKenzie HA. The Kjeldahl Determination of Nitrogen: Retrospect and Prospect. Trends Anal Chem 1994; 13(4): 138–44. 13. Ashraf M, Shah RA. Developments in the Kjeldahl Method for Determination of Nitrogen. Pakistan J Sci Res 1963; 15, 45–57. 14. Szabadváry F. Kjeldahl, Johann Gustav Christoffer. In Dictionary of Scientific Biography. Gillispie CC Ed. Vol 7. New York: American Council of Learned Societies, Charles Scribner’s Sons 1973: pp. 393-4. 15. Kjeldahl J. Et Destillationsapparat til Brug ved Kvaelstofbestemmelse. Medd Carlsb Lab 1888; 2(5): 197-8; Un Appareil Distillatoire a l’Usage de la Determination de l’Azote (French summary: Résumé du CR Trav Lab Carlsb; separately paged section). 16. Thiex NJ, Manson H, Anderson S, Persson JA. Determination of Crude Protein in Animal Feed, Forage, Grain, and Oilseeds by Using Block Digestion with a Copper Catalyst and Steam Distillation into Boric Acid: Collaborative Study. J AOAC Int 2002; 85(2): 309–17. 17. Dumas JB. Lettre de M. Dumas a M. Gay - Lussac, Sur les Proce ́de ́s de l’Analyse Organique. Ann Chim Phys 1831; 2(47): 198–215. 18. Varrentrapp F, Will H. Neue Method e zur Bestimmung des Stickstoffs in organischen Verbindungen. Ann Chem Pharm 1841; 39(3): 257 – 96; Nouvelle Me ́ thode pour la Determination de l’ A zote dans les Combinaisons Organiques. J Pharm Chim 1842; 1: 14–25; Am J Pharm 1843; 8: 141–51. 19. Wanklyn A, Gamgee A. On the Action of Permanganate of Potash on Urea, Ammonia, and Acetamide in Strongly Alkaline Solutions. J Chem Soc 1868; 21: 25–31. 20. Bradstreet RB. A Review of the Kjeldahl Determination of Organic Nitrogen. Chem Rev 1940; 27(2): 331–50. 21. Lynch JM, Barbano DM. Kjeldahl Nitrogen Analysis as a Refer- ence Method for Protein Determination in Dairy Products. J AOAC Int 1999; 82(6): 1389–98. 22. ISO. ISO 5983–1:2005. Animal Feeding Stuffs - Determination of Nitrogen Content and Calculation of Crude Protein Content – Part 1: Kjeldahl Method. Geneve: International Organization for Standardization 2009. 23. Persson JA, Wennerholm M, O’Halloran S. Handbook for Kjeldahl digestión. Hilleroed, Denmark: FOSS 2008. 24. FOSS. Keltec 8400 Auto Sampler System. 2010. http://www.youtube . com/watch?v=V6h6JzNh1rE (video)