Changes in the feed characteristics of DDGS during high temperature or humidification high temperature storage
2008
Takahashi, N.(Nippon Veterinary and Life Science Univ., Musashino, Tokyo (Japan)) | Kawai, N. | Kaneko, T. | Kimura, N.
We carried out storage tests of DDGS to confirm the change in the feed characteristics under high temperature and humidification high temperature assuming passage through a high temperature region during sea transportation. The high temperature storage test was set at room temperature (22degC), 40degC and 60degC, and changes in the sample temperature, moisture, lipid quality (acid value (AV) and peroxide value (POV)), lipid content, tocopherol content, color and odor were examined at 0, 1, 2, 4, 6 and 8th week for 8 weeks storage. The humidification high temperature storage test was set at 40degC, and changes in the moisture, AV and POV were examined at 0, 1, 2 and 4th week for 4 weeks storage. Both tests included a group with antioxidant addition. In the high temperature storage test, the lipid quality scarcely changed. This may be due to antioxidant action caused by the gamma-tocopherol in DDGS. In the group at 60degC high temperature, the color turned brown and the odor changed to a burnt odor, which result were significantly different from the other groups. In group with humidification at 40degC, the lipid was oxidized slightly, but this was controlled by the antioxidant. The characteristics of DDGS were suggested to be comparatively stable during storage as a feedstuff. If DDGS is stored under a general feedstuff storage condition, it is suggested that characteristics as the feedstuff of DDGS are kept.
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