Interspecies and seasonal differences of retinol in dairy ruminant's milk

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722861%3A_____%2F15%3A%23KL01" target="_blank" >RIV/26722861:_____/15:#KL01 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43210/15:43907997 RIV/62157124:16270/15:43873561

Výsledek na webu

<a href="http://www.potravinarstvo.com/journal1/index.php/potravinarstvo/article/viewFile/436/pdf/" target="_blank" >http://www.potravinarstvo.com/journal1/index.php/potravinarstvo/article/viewFile/436/pdf/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5219/436" target="_blank" >10.5219/436</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interspecies and seasonal differences of retinol in dairy ruminant's milk

Popis výsledku v původním jazyce

Samples of raw milk were colleceted on different farms in the Czech Republic between 2013 and 2014. Retinol was measured by ultra high performance liquid chromatography with UV detection (325 nm) in isocratic mode after alkaline saponification with methanolic potassium hydroxide solution and liquid-liquid extraction into non polar organic solvent of whole raw milk. To avoid vitamin losses or degradation during the procedure, antioxidants were added to the sample extraction media. Our results indicate significant interspecies differences between bovine and ovine milk and caprine and ovine milk. Concentration of retinol is very similar in bovine and caprine milk 0.96 ±0.11 mg/L, 0.94 ±0.25 mg/L, respectively. The mean concentration in sheep´s milk is 1.75 ±0.24 mg/L. The seasonal variation of retinol in raw bovine milk was detected as high significant, with the highest concentration during winter. These results contribute to the nutrition evaluation of milk in the Czech Republic and indicate, that the sheep´s milk is the best source of retinol among the milks of ruminants kept in the Czech Republic, however it is not used in its fluid form for human consumption.

Název v anglickém jazyce

Interspecies and seasonal differences of retinol in dairy ruminant's milk

Popis výsledku anglicky

Samples of raw milk were colleceted on different farms in the Czech Republic between 2013 and 2014. Retinol was measured by ultra high performance liquid chromatography with UV detection (325 nm) in isocratic mode after alkaline saponification with methanolic potassium hydroxide solution and liquid-liquid extraction into non polar organic solvent of whole raw milk. To avoid vitamin losses or degradation during the procedure, antioxidants were added to the sample extraction media. Our results indicate significant interspecies differences between bovine and ovine milk and caprine and ovine milk. Concentration of retinol is very similar in bovine and caprine milk 0.96 ±0.11 mg/L, 0.94 ±0.25 mg/L, respectively. The mean concentration in sheep´s milk is 1.75 ±0.24 mg/L. The seasonal variation of retinol in raw bovine milk was detected as high significant, with the highest concentration during winter. These results contribute to the nutrition evaluation of milk in the Czech Republic and indicate, that the sheep´s milk is the best source of retinol among the milks of ruminants kept in the Czech Republic, however it is not used in its fluid form for human consumption.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

21101 - Food and beverages

Projekt

<a href="/cs/project/QJ1230044" target="_blank" >QJ1230044: Stanovení parametrů pro legislativní hodnocení kvality a zdravotní nezávadnosti syrového mléka krav, ovcí a koz</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Potravinarstvo

ISSN

1338-0230

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

5

Strana od-do

201-205

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-8494641123