Factors Influencing the Content of Vitamins A and E in Sheep and Goat Milk
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722861%3A_____%2F15%3A%23DR40" target="_blank" >RIV/26722861:_____/15:#DR40 - isvavai.cz</a>
Výsledek na webu
<a href="http://agriculturejournals.cz/publicFiles/146131.pdf" target="_blank" >http://agriculturejournals.cz/publicFiles/146131.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17221/149/2014-CJFS" target="_blank" >10.17221/149/2014-CJFS</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Factors Influencing the Content of Vitamins A and E in Sheep and Goat Milk
Popis výsledku v původním jazyce
The content of lipophilic vitamins A and E was determined in samples of sheep and goat milk of different breeds coming from 9 farms in central, eastern, and southern Bohemia. Samples were collected throughout the period of lactation (from April to September). Vitamins A and E were determined by HPLC using DAD and FLD detectors. Vitamin A was determined in all samples but only ?-tocopherol (out of various forms of vitamin E) was detected in all samples. The total average content of vitamins A and E in raw milk of all sheep breeds during lactation was 0.93 ± 0.07 and 2.93 ± 0.87 mg/kg, levels of these vitamins in goat milk were 0.79 ± 0.08 and 1.29 ± 0.35 mg/kg, respectively. The results showed a significantly medium and strong correlation between the content of vitamin A and E and the content of fat (R2 = 0.57 and 0.75, respectively). The year did not have any statistically significant influence on the content of monitored vitamins. The content of both vitamins is dependent on the phase of lactation. The levels of vitamins A and E were significantly lower in the early phase and significantly higher in the late phase of lactation. The amount of monitored vitamins slightly decreased during pasteurisation. A strong decrease in the content of both vitamins was observed during the first two weeks after milk storage in a freezing box at the temperature of –20°C (about 11–55%).
Název v anglickém jazyce
Factors Influencing the Content of Vitamins A and E in Sheep and Goat Milk
Popis výsledku anglicky
The content of lipophilic vitamins A and E was determined in samples of sheep and goat milk of different breeds coming from 9 farms in central, eastern, and southern Bohemia. Samples were collected throughout the period of lactation (from April to September). Vitamins A and E were determined by HPLC using DAD and FLD detectors. Vitamin A was determined in all samples but only ?-tocopherol (out of various forms of vitamin E) was detected in all samples. The total average content of vitamins A and E in raw milk of all sheep breeds during lactation was 0.93 ± 0.07 and 2.93 ± 0.87 mg/kg, levels of these vitamins in goat milk were 0.79 ± 0.08 and 1.29 ± 0.35 mg/kg, respectively. The results showed a significantly medium and strong correlation between the content of vitamin A and E and the content of fat (R2 = 0.57 and 0.75, respectively). The year did not have any statistically significant influence on the content of monitored vitamins. The content of both vitamins is dependent on the phase of lactation. The levels of vitamins A and E were significantly lower in the early phase and significantly higher in the late phase of lactation. The amount of monitored vitamins slightly decreased during pasteurisation. A strong decrease in the content of both vitamins was observed during the first two weeks after milk storage in a freezing box at the temperature of –20°C (about 11–55%).
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
GM - Potravinářství
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2015
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Czech Journal of Food Sciences
ISSN
1212-1800
e-ISSN
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Svazek periodika
33
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
CZ - Česká republika
Počet stran výsledku
8
Strana od-do
58-65
Kód UT WoS článku
000351653300010
EID výsledku v databázi Scopus
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