光合成培養におけるユーグレナの抗酸化ビタミン量への光質とCO2濃度の影響 | Effect of Light Quality and CO2 Concentration on Antioxidant Vitamin Contents in Autotrophycally Cultured Euglena gracilis
2007
松本, 隆仁 | 乾, 博 | 宮武, 和孝 | 中野, 長久 | 村上, 克介
It has been reported that Euglena contained ascorbic acid(AsA), α-tocopherol(α-toc) and β‐carotene(β-car) as antioxidant vitamins. These vitamins contribute to the available antioxidant and nutritional resources in human and animal bodies. In the present study, we investigated the effects of light quality and C02 concentration(0.04% and 10%) on the production of these vitamins, and compared the vitamin contents in Euglena with those in other food sources to verify the availability of Euglena as an antioxidant vitamin source. Under the C02 concentration of 0.04%, viamin contents in Euglena cultured in blue light were AsA 746 µg 109 cells-1, α-toc 704 µg 109 cells-1, β-car 513 µg 109 cells-1, respectivery, higher than those in other LED light conditions.Whereas under the C02 concentration of 10%,vitamin contents in Euglena cultured in blue light were AsA 231 µg 109 cells-1,α-toc 221 µg 109 cells-1, β-car 208 µg 109 cells-1, respectivery, lower than those in ordinary air conditions (with 0.04% C02). No significant differences in vitamin contents were found between the four light quality treatments under the CO2 concentration of 10%. In addition, vitamin contents in Euglena cultured in blue light under the C02 concentration of 0.04% were also compared with those in other foods that are more popularly used as vitamin sources.It was concluded that Euglena would be good vitamin source when they are cultured in blue light under the ordinary air condition (with C02 concentration of 0.04%).
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