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- W2912336504 abstract "All carotenoids originate from a single, common precursor, phytoene. The color of carotenoids is determined by desaturation, isomerization, cyclization, hydroxylation and epoxidation of the 40-carbon phytoene. The conjugated double-bond structure and nature of end ring groups confer on the carotenoids properties such as color and antioxidant activity. Algae may become major sources of carotenoids but the extent of environmental and genetic influences on algae carotenoid biosynthesis are poorly understood. Carotenoid biosynthesis can be influenced by many aspects and is liable to geometric isomerization with the existence of oxygen, light and heat which affect color degradation and oxidation. Therefore, in this study carotenoid biogenesis is investigated in cell culture of Chlorella fusca as a potential model system for rapid initiation, extraction and HPLC analysis of carotenoids by providing stringent control of genetic, developmental and environmental factors. The value of this experimental system for investigating key factors controlling carotenoid accumulation is then tested by assessing the effects of environmental variables, such as drought stress, light intensity and nutrient strength on carotenoid accumulation. Our finding revealed that the conversion of β-carotene to lutein is due to irradiance stress condition, nutrient strength as well as drought stress. As a result, lutein concentration will increase. This reaction will restrict the supply of precursors for ABA biosynthesis and the algae cell culture responds by increasing carotenogenic metabolic flux to compensate for this restriction. In conclusion, selecting the appropriate algae species for the appropriate environmental conditions is not only important for yield production, but also for nutritional value and quality of carotenoid." @default.
- W2912336504 created "2019-02-21" @default.
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- W2912336504 date "2017-10-01" @default.
- W2912336504 modified "2023-09-27" @default.
- W2912336504 title "Manipulation of environmental variables towards carotenoid biosynthesis in chlorella fusca" @default.
- W2912336504 hasPublicationYear "2017" @default.
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