| Autor: |
Mitchell, Geraldine V., Grundel, Erich, Jenkins, Mamie, Blakely, Shirley R. |
| Zdroj: |
The Journal of Nutrition; October 1990, Vol. 120 Issue: 10 p1235-1240, 6p |
| Abstrakt: |
The effects of ingesting the alga Spirulina maximaon the storage and utilization of vitamins A and E were investigated by feeding diets containing 0, 2.7, 10.7, 18.7 and 26.7% S. maximato male rats for 6 wk. All diets contained 18% protein, which was contributed by S. maximaor by casein or by a mixture of them. Growth results indicated that rats did not utilize the diets containing S. maximaas well as the casein control diet (0% S. maxima) when levels were 10.7% or more of the diet. The ingestion of S. maximacaused a significant increase in dry matter and chloroform-extractable crude fat in the feces. A low level of 2.7% S. maximacaused a significant reduction in plasma, liver and heart α-tocopherol levels. The concentrations of α-tocopherol in these tissues showed a marked decline with 10.7% S. maximain the diet, followed by a lesser decline at higher levels. Liver retinoid levels of rats increased when S. maximawas added to the diet, suggesting conversion of the naturally occurring carotenoids in S. maximato vitamin A. However, the plasma levels of retinol decreased when S. maximawas fed at 10.7% or more. These data demonstrate that S. maximacan significantly alter the storage and utilization of vitamins A and E. |
| Databáze: |
Supplemental Index |
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