Vitamin A degradation and light-oxidized flavor defects in milk

Journal of Dairy Science
L J WhitedK J Boor

Abstract

To determine the effects of light exposure on vitamin A degradation and on light-oxidized flavor development, samples of whole, reduced fat, and nonfat milk were exposed to fluorescent light (either 1000 or 2000 lx) at time intervals of 2, 4, 8, or 16 h. Measurable vitamin A losses occurred at 2, 4, and 16 h at 2000 lx for nonfat, reduced fat and whole milk, respectively. Moderate light-oxidized flavors were detected after 4 h of light exposure (2000 lx) in the whole and reduced fat milk and after 8 h in nonfat milk. The different types of milk show a significant difference in relative flavor scores. By 16 h at 2000 lx, relative light-oxidized flavor development was lower in nonfat milk than in whole or reduced fat milk. The presence of milk fat appears to protect against vitamin A degradation in fluid products, but adversely affects the flavor quality of milk after exposure to light. In summary, these findings demonstrate that even a brief, moderate light exposure (2 h; 2000 lx) can reduce the nutritional value and flavor quality of fluid milk products.

References

Jan 30, 2002·Journal of Dairy Science·S C MurphyK J Boor
Feb 1, 1985·Journal of Food Protection·Anthony J FanelliMina K Gabriel
Feb 1, 1991·Journal of Food Protection·Rose L FellmanRuth Hollender

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Citations

Jun 11, 2014·Critical Reviews in Food Science and Nutrition·Lara Manzocco, Maria Cristina Nicoli
Mar 3, 2017·Journal of Food Science·Eileen B YehMaryAnne Drake
Nov 21, 2017·Journal of Dairy Science·A N SchianoM A Drake
Nov 21, 2017·Journal of Dairy Science·David M Barbano
Feb 15, 2016·Journal of Dairy Science·C BrothersenS Martini
Oct 23, 2012·Journal of Dairy Science·O Guneser, Y Karagul Yuceer
Nov 10, 2009·Journal of Food Science·J H Lee, D B Min
Mar 25, 2019·Journal of Dairy Science·A N SchianoM A Drake
Oct 5, 2020·Journal of Dairy Science·W S HarwoodM A Drake
Feb 6, 2019·Lipids in Health and Disease·Imran Taj KhanMuhammad Hayat Jaspal
Apr 25, 2017·Journal of Dairy Science·E B YehM A Drake
Aug 13, 2021·Journal of Food Science·Myung-Woo KangZata M Vickers
Dec 22, 2005·Journal of Agricultural and Food Chemistry·Charlotte M AndersenVibeke K Holm
Jan 18, 2007·Journal of Agricultural and Food Chemistry·Mariana A MontenegroClaudio D Borsarelli
Dec 21, 2006·Journal of Agricultural and Food Chemistry·J P WoldJ Moan
Dec 21, 2021·Journal of Agricultural and Food Chemistry·Minren Xu, Jim Watson

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