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Montemurro M, Schwaighofer A, Schmidt A, Culzoni MJ, Mayer HK, Lendl B. High-throughput quantitation of bovine milk proteins and discrimination of commercial milk types by external cavity-quantum cascade laser spectroscopy and chemometrics. Analyst 2019; 144:5571-5579. [DOI: 10.1039/c9an00746f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Mid-infrared (IR) external cavity-quantum cascade laser (EC-QCL) spectroscopy combined with partial least square modeling (PLS) enables quantitation of bovine milk proteins and discrimination of commercial milk types.
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Affiliation(s)
- Milagros Montemurro
- Institute of Chemical Technologies and Analytics
- Vienna University of Technology
- 1060 Vienna
- Austria
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ)
| | - Andreas Schwaighofer
- Institute of Chemical Technologies and Analytics
- Vienna University of Technology
- 1060 Vienna
- Austria
| | - Anatol Schmidt
- Department of Food Science and Technology
- Food Chemistry Laboratory
- BOKU – University of Natural Resources and Life Sciences
- 1190 Vienna
- Austria
| | - María J. Culzoni
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ)
- Cátedra de Química Analítica I
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral-CONICET
- Ciudad Universitaria
| | - Helmut K. Mayer
- Department of Food Science and Technology
- Food Chemistry Laboratory
- BOKU – University of Natural Resources and Life Sciences
- 1190 Vienna
- Austria
| | - Bernhard Lendl
- Institute of Chemical Technologies and Analytics
- Vienna University of Technology
- 1060 Vienna
- Austria
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Artavia G, Rojas-Bogantes L, Granados-Chinchilla F. Two alternative chromatography methods assisted by the sulfonic acid moeity for the determination of furosine in milk. MethodsX 2018; 5:639-647. [PMID: 30013947 PMCID: PMC6019685 DOI: 10.1016/j.mex.2018.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/11/2018] [Indexed: 11/22/2022] Open
Abstract
N6-(2-(2-Furanyl-2-oxoethyl))-l-lysine (furosine) is a deteriorative reaction product that is produced during heat treatment and storage of milk. This compound affects the quality of commercial dairy products. Accurate determination of furosine is necessary as it may serve as a measure of the degree of protein degradation in dairy products. In this article, two HPLC based methods (1. a novel ion-pairing reagent 2. a strong cation exchange column) are proposed to quantify furosine. These methods were optimized and validated for their application to analyze fluid milk and dried milk powder. •Two methods that can be used for routine milk quality control, including heat damage and adulteration, were developed.•Compared to previous methods, the modified procedures herein using aromatic sulfonic acids (a pairing agent or covalently bound to a matrix on a strong cation exchange column) provide less expensive and more sensitive determinations.•The identification and quantification of the furosine chromatographic signal was successfully achieved during analysis of commercial and spiked samples.
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Affiliation(s)
- Graciela Artavia
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Universidad de Costa Rica, 11501-2060 Ciudad Universitaria Rodrigo Facio, San José, Costa Rica
| | - Lizeth Rojas-Bogantes
- Centro Nacional de Ciencia y Tecnología de Alimentos (CITA), Universidad de Costa Rica, 11501-2060 Ciudad Universitaria Rodrigo Facio, San José, Costa Rica
| | - Fabio Granados-Chinchilla
- Centro de Investigación en Nutrición Animal (CINA), Universidad de Costa Rica, 11501-2060 Ciudad Universitaria Rodrigo Facio, San José, Costa Rica
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Sabater C, Montilla A, Ovejero A, Prodanov M, Olano A, Corzo N. Furosine and HMF determination in prebiotic-supplemented infant formula from Spanish market. J Food Compost Anal 2018. [DOI: 10.1016/j.jfca.2017.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Rodríguez-Camejo C, Puyol A, Fazio L, Rodríguez A, Villamil E, Andina E, Cordobez V, Díaz H, Lemos M, Siré G, Carroscia L, Castro M, Panizzolo L, Hernández A. Antibody Profile of Colostrum and the Effect of Processing in Human Milk Banks: Implications in Immunoregulatory Properties. J Hum Lact 2018; 34:137-147. [PMID: 28586632 DOI: 10.1177/0890334417706359] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND When feeding preterm infants, donor milk is preferred if the mother's own milk is unavailable. Pasteurization may have detrimental effects on bioactivity, but more information is needed about its effects on the immunological compounds. Research aim: This work has two main aims: evaluate the antibody profile of colostrum and study the quantitative variations in the antibodies' level and specific reactivity after undergoing Holder pasteurization. The authors focused on immunoregulatory components of colostrum (antidietary antibodies and TGF-β2) in the neonatal gut. METHODS This is a descriptive cross-sectional study of a convenience sample of 67 donated colostrum samples at different days after delivery, both raw and pasteurized. Antibody profiles were analyzed at different times during breastfeeding, and total and specific antibodies (IgM, IgA, and IgG subclasses) were compared with tetanus toxoid and ovalbumin using enzyme-linked immunosorbent assay. The processing effect on total and specific antibodies, as well as TGF-β2, was evaluated by paired analyses. RESULTS No variations in immunological compounds were observed throughout the colostrum stage. The TGF-β2, antibodies' concentrations, and antibodies' specific reactivity after pasteurization did not vary significantly as days of lactation varied. Changes in antibody levels were dependent on isotype and IgG subclass, and IgG4 showed remarkable resistance to heating. Moreover, the effect of the pasteurization on specific reactivity was antigen dependent. CONCLUSION The supply of relevant immunological components is stable throughout the colostrum stage. The effects of pasteurization on antibodies depend on isotype, subclass, and specificity. This information is relevant to improving the immunological quality of colostrum, especially for preterm newborns.
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Affiliation(s)
- Claudio Rodríguez-Camejo
- 1 Cátedra de Inmunología, Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Arturo Puyol
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Laura Fazio
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Analía Rodríguez
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Emilia Villamil
- 1 Cátedra de Inmunología, Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Eliana Andina
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Vanira Cordobez
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Hernán Díaz
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Mary Lemos
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Gabriela Siré
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Lilián Carroscia
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Mara Castro
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Luis Panizzolo
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Ana Hernández
- 1 Cátedra de Inmunología, Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
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