Evaluation of Fluorescent Light on Flavor and Riboflavin Content of Milk Held in Gallon Returnable Containers
- 1 February 1979
- journal article
- Published by Elsevier in Journal of Food Protection
- Vol. 42 (2) , 105-109
- https://doi.org/10.4315/0362-028x-42.2.105
Abstract
Five 1-gal. retail containers were evaluated for their protection of homogenized milk against development of light-induced flavor and degradation of riboflavin. These were clear polycarbonate, tinted polycarbonate, high-density polyethylene, and glass returnable containers and an unprinted fiberboard non-returnable container. All containers were held in a commercial sliding door display case at 7 ± 1 C illuminated to 1076 lx with a fluorescent lamp up to 72 h. Sensory evaluation was conducted by a trained panel using hedonic 9-point scoring and magnitude estimation scale techniques. Riboflavin was determined by the fluorometric method. An evaluation of the containers demonstrated that there was a significant difference (P < .05) in preference and degree of light-induced flavor between the milk held in clear polycarbonate and glass compared to the control milk after 12 h of exposure. Milk held in high-density polyethylene was significantly different in preference from the unexposed control following 12 h w...Keywords
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