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פותח על ידי קלירמאש פתרונות בע"מ -
Hydrogen peroxide-dependent conversion of nitrite to nitrate as a crucial feature of bovine milk catalase
Year:
2009
Authors :
מרין, עוזי
;
.
סילניקוב, ניסים
;
.
Volume :
57
Co-Authors:
Nissim, S., Biology of Lactation Laboratory, Institute of Animal Science, Israel
Fira, S., Biology of Lactation Laboratory, Institute of Animal Science, Israel
Mayan, S., Biology of Lactation Laboratory, Institute of Animal Science, Israel
Uzi, M., Department of Food Science, Agricultural Research Organization, the Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Gabriel, L., National Mastitis Reference Center, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan 50250, Israel
Facilitators :
From page:
8018
To page:
8025
(
Total pages:
8
)
Abstract:
The enzyme catalase is well-known to catalyze the disintegration of hydrogen peroxide to water and oxygen; however, this study shows that its main function in bovine milk is oxidation of nitrite to nitrate. This process depends on hydrogen peroxide, of which the main source appears to be hydrogen peroxide formation that is coupled to the conversion of purines-xanthine in the present study-to uric acid by milk xanthine oxidase. However, additional secondary sources of hydrogen peroxide appear to be important during the relatively long storage of milk in the gland cistern. This paper demonstrates that the oxidation of nitrite to nitrate is necessary to prevent accumulation of free radicals and oxidative products during storage of milk in the gland and during the unavoidable delay between milking and pasteurization in dairy plants. Recommendations for minimizing the deterioration in milk quality during commercial storage are presented. © 2009 American Chemical Society.
Note:
Related Files :
Animal
Animals
cattle
Kinetics
metabolism
milk
Nitrates
Nitrites
No cycling
Preformed radical products
עוד תגיות
תוכן קשור
More details
DOI :
10.1021/jf900618w
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
21772
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:46
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Scientific Publication
Hydrogen peroxide-dependent conversion of nitrite to nitrate as a crucial feature of bovine milk catalase
57
Nissim, S., Biology of Lactation Laboratory, Institute of Animal Science, Israel
Fira, S., Biology of Lactation Laboratory, Institute of Animal Science, Israel
Mayan, S., Biology of Lactation Laboratory, Institute of Animal Science, Israel
Uzi, M., Department of Food Science, Agricultural Research Organization, the Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Gabriel, L., National Mastitis Reference Center, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan 50250, Israel
Hydrogen peroxide-dependent conversion of nitrite to nitrate as a crucial feature of bovine milk catalase
The enzyme catalase is well-known to catalyze the disintegration of hydrogen peroxide to water and oxygen; however, this study shows that its main function in bovine milk is oxidation of nitrite to nitrate. This process depends on hydrogen peroxide, of which the main source appears to be hydrogen peroxide formation that is coupled to the conversion of purines-xanthine in the present study-to uric acid by milk xanthine oxidase. However, additional secondary sources of hydrogen peroxide appear to be important during the relatively long storage of milk in the gland cistern. This paper demonstrates that the oxidation of nitrite to nitrate is necessary to prevent accumulation of free radicals and oxidative products during storage of milk in the gland and during the unavoidable delay between milking and pasteurization in dairy plants. Recommendations for minimizing the deterioration in milk quality during commercial storage are presented. © 2009 American Chemical Society.
Scientific Publication
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