<b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481
<p class="aresumo">This study determined the composition, somatic cell count (SCC) and relative percentage of a-<sub>S1</sub>, a-<sub>S2</sub>, b and k caseins in ethanol-unstable (UNA) and stable bulk milk samples. The sampling plan involved farms that suppli...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2013-01-01
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| Series: | Acta Scientiarum: Technology |
| Subjects: | |
| Online Access: | http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11481 |
| _version_ | 1818357638541344768 |
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| author | Carlos Augusto Fernandes de Oliveira Ludmila Camargo Lopes Roice Eliana Rosim Andrezza Maria Fernandes Carlos Humberto Corassin |
| author_facet | Carlos Augusto Fernandes de Oliveira Ludmila Camargo Lopes Roice Eliana Rosim Andrezza Maria Fernandes Carlos Humberto Corassin |
| author_sort | Carlos Augusto Fernandes de Oliveira |
| collection | DOAJ |
| description | <p class="aresumo">This study determined the composition, somatic cell count (SCC) and relative percentage of a-<sub>S1</sub>, a-<sub>S2</sub>, b and k caseins in ethanol-unstable (UNA) and stable bulk milk samples. The sampling plan involved farms that supplied milk to one dairy plant located in the northeast region of São Paulo, Brazil, in May (fall), July (winter), and September (spring) 2007. Three hundred thirty-four bulk milk samples within an acceptable range of pH and acidity were included in the study and divided into two groups: a) stable milk, when protein precipitation only occurred with 78% ethanol (v/v); and b) unstable (UNA) milk, when the precipitation occurred with 72% ethanol (v/v). From the total samples analyzed, 77 (23%) were unstable in the 72% ethanol (v/v), although they have shown normal pH and acidity, and 41 (12.3%) were stable in 78% ethanol (v/v). No differences were found between relative percentages of a and b-casein in UNA or stable milks. However, UNA samples showed higher SCC, as well as lower casein and lactose contents. Results indicated that the high SCC may be involved as a causal factor for the high incidence of UNA milks in the herds studied.</p> <p class="akeyword"> </p> |
| first_indexed | 2024-12-13T20:16:17Z |
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| id | doaj.art-0091bffcbbd846ae85c4c0e259fefeec |
| institution | Directory Open Access Journal |
| issn | 1806-2563 1807-8664 |
| language | English |
| last_indexed | 2024-12-13T20:16:17Z |
| publishDate | 2013-01-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Technology |
| spelling | doaj.art-0091bffcbbd846ae85c4c0e259fefeec2022-12-21T23:32:47ZengUniversidade Estadual de MaringáActa Scientiarum: Technology1806-25631807-86642013-01-0135115315610.4025/actascitechnol.v35i1.114819056<b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481Carlos Augusto Fernandes de Oliveira0Ludmila Camargo Lopes1Roice Eliana Rosim2Andrezza Maria Fernandes3Carlos Humberto Corassin4Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São PauloFaculdade de Zootecnia e Engenharia de Alimentos, Universidade de São PauloFaculdade de Zootecnia e Engenharia de Alimentos, Universidade de São PauloFaculdade de Zootecnia e Engenharia de Alimentos, Universidade de São PauloFaculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo<p class="aresumo">This study determined the composition, somatic cell count (SCC) and relative percentage of a-<sub>S1</sub>, a-<sub>S2</sub>, b and k caseins in ethanol-unstable (UNA) and stable bulk milk samples. The sampling plan involved farms that supplied milk to one dairy plant located in the northeast region of São Paulo, Brazil, in May (fall), July (winter), and September (spring) 2007. Three hundred thirty-four bulk milk samples within an acceptable range of pH and acidity were included in the study and divided into two groups: a) stable milk, when protein precipitation only occurred with 78% ethanol (v/v); and b) unstable (UNA) milk, when the precipitation occurred with 72% ethanol (v/v). From the total samples analyzed, 77 (23%) were unstable in the 72% ethanol (v/v), although they have shown normal pH and acidity, and 41 (12.3%) were stable in 78% ethanol (v/v). No differences were found between relative percentages of a and b-casein in UNA or stable milks. However, UNA samples showed higher SCC, as well as lower casein and lactose contents. Results indicated that the high SCC may be involved as a causal factor for the high incidence of UNA milks in the herds studied.</p> <p class="akeyword"> </p>http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11481ethanol stabilitymilk SCCmilk quality |
| spellingShingle | Carlos Augusto Fernandes de Oliveira Ludmila Camargo Lopes Roice Eliana Rosim Andrezza Maria Fernandes Carlos Humberto Corassin <b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481 Acta Scientiarum: Technology ethanol stability milk SCC milk quality |
| title | <b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481 |
| title_full | <b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481 |
| title_fullStr | <b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481 |
| title_full_unstemmed | <b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481 |
| title_short | <b>Composition, somatic cell count and casein fractions of ethanol unstable milks</b> - doi: 10.4025/actascitechnol.v35i1.11481 |
| title_sort | b composition somatic cell count and casein fractions of ethanol unstable milks b doi 10 4025 actascitechnol v35i1 11481 |
| topic | ethanol stability milk SCC milk quality |
| url | http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/11481 |
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