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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
17/02/1995 |
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Data da última atualização: |
17/02/1995 |
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Autoria: |
KAGEYAMA, P. Y.; BALLONI, E. A.; PINTO JUNIOR, J. E.; JACOB, W. S. |
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Título: |
Adaptabilidade de especies, fontes de sementes e perspectivas do melhoramento de Pinus em Minas Gerais |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Boletim Informativo IPEF, Piracicaba, v.6, n.16, p.H1-H15, 1978 |
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ISSN: |
0100-8137 |
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Idioma: |
Português |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00496naa a2200157 a 4500
001 1282314
005 1995-02-17
008 1978 bl uuuu u00u1 u #d
022 $a0100-8137
100 1 $aKAGEYAMA, P. Y.
245 $aAdaptabilidade de especies, fontes de sementes e perspectivas do melhoramento de Pinus em Minas Gerais
260 $c1978
700 1 $aBALLONI, E. A.
700 1 $aPINTO JUNIOR, J. E.
700 1 $aJACOB, W. S.
773 $tBoletim Informativo IPEF, Piracicaba$gv.6, n.16, p.H1-H15, 1978
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
28/08/2023 |
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Data da última atualização: |
28/08/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
PORTO, B. L. S.; FARIA, I. D. L.; SOUZA, J. C. Q. DE; MOREIRA, O. B. DE O.; GAMA, M. A. S. da; OLIVEIRA, M. A. L. DE. |
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Afiliação: |
BRENDA LEE SIMAS PORTO, Universidade Federal de Juiz de Fora; ISAURA DANIELE LEITE FARIA, Universidade Federal de Juiz de Fora; JÉSSICA CORDEIRO QUEIROZ DE SOUZA, Universidade Federal de Juiz de Fora; OLÍVIA BRITO DE OLIVEIRA MOREIRA, Universidade Federal de Juiz de Fora; MARCO ANTONIO SUNDFELD DA GAMA, CPPSE; MARCONE AUGUSTO LEAL DE OLIVEIRA, Universidade Estadual de Campinas. |
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Título: |
Rapid method for simultaneous determination of CIS-9, TRANS-11 and TRANS-10, CIS-12 conjugated linoleic acid isomers in milk by GC-FID. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Química Nova, v. 7, p. 743-746, 2023. |
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DOI: |
10.21577/0100-4042.20230026 |
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Idioma: |
Inglês |
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Conteúdo: |
Ruminant milk is the lead source of conjugated linoleic acid (CLA) in the human diet, with cis-9, trans-11 CLA being the major among all. Small amounts of trans-10, cis-12 CLA are also found in synthetic supplements. Since both isomers are biologically active with potential health benefits, there is great interest in quantifying them for quality control routines. An alternative method for the analysis of the aforementioned CLAs by fast gas chromatography (GC) is discussed in the present study. The fatty acid methyl ester mixture obtained by alkaline catalysis was injected into a GC equipped with a flame ionization detector (FID) and fitted with an ionic liquid SLB-IL111 chromatographic column (15 m × 0.10 mm × 0.08 µm). Separation was achieved in less than 5 min using a 168 °C isotherm run. Both CLA isomers were quantified by using of single point standard addition statistical approach. Results were contested to those obtained using the recommended 100 m long CP-Sil88 capillary column and none evidence of significant differences was found within 95% confidence interval. Therefore, the proposed method could be valuable to focused regulatory routines of large numbers of samples with greater analytical frequency. |
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Palavras-Chave: |
CLA; Fast GC; SLB IL111. |
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Thesaurus NAL: |
Fatty acids; Milk. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1156165/1/RapidMethod.pdf
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Marc: |
LEADER 01999naa a2200253 a 4500
001 2156165
005 2023-08-28
008 2023 bl uuuu u00u1 u #d
024 7 $a10.21577/0100-4042.20230026$2DOI
100 1 $aPORTO, B. L. S.
245 $aRapid method for simultaneous determination of CIS-9, TRANS-11 and TRANS-10, CIS-12 conjugated linoleic acid isomers in milk by GC-FID.$h[electronic resource]
260 $c2023
520 $aRuminant milk is the lead source of conjugated linoleic acid (CLA) in the human diet, with cis-9, trans-11 CLA being the major among all. Small amounts of trans-10, cis-12 CLA are also found in synthetic supplements. Since both isomers are biologically active with potential health benefits, there is great interest in quantifying them for quality control routines. An alternative method for the analysis of the aforementioned CLAs by fast gas chromatography (GC) is discussed in the present study. The fatty acid methyl ester mixture obtained by alkaline catalysis was injected into a GC equipped with a flame ionization detector (FID) and fitted with an ionic liquid SLB-IL111 chromatographic column (15 m × 0.10 mm × 0.08 µm). Separation was achieved in less than 5 min using a 168 °C isotherm run. Both CLA isomers were quantified by using of single point standard addition statistical approach. Results were contested to those obtained using the recommended 100 m long CP-Sil88 capillary column and none evidence of significant differences was found within 95% confidence interval. Therefore, the proposed method could be valuable to focused regulatory routines of large numbers of samples with greater analytical frequency.
650 $aFatty acids
650 $aMilk
653 $aCLA
653 $aFast GC
653 $aSLB IL111
700 1 $aFARIA, I. D. L.
700 1 $aSOUZA, J. C. Q. DE
700 1 $aMOREIRA, O. B. DE O.
700 1 $aGAMA, M. A. S. da
700 1 $aOLIVEIRA, M. A. L. DE
773 $tQuímica Nova$gv. 7, p. 743-746, 2023.
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Embrapa Pecuária Sudeste (CPPSE) |
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