To maximize the biomass and lipid production for applications in food or biofuel feedstock, nine stress conditions were tested considering N and/or P limitations, light intensity & quality, for Haematococcus pluvialis SCCAP K-0084 cultivation. Photosynthetically active radiation (PAR), warm white light emitting diode (WWLED), and white light emitting diode (WLED) at illumination of 240 μmol photons m(-2) sec(-1) were the best stress-regulatory factors. PAR without P & low N conditions yielded high biomass with 33% lipids containing increased C16:0 and C18:0 saturated fatty acids, and reduced unsaturated fatty acids (UFAs) (oleic, linoleic, and α/γ-linolenic). WWLED and WLED without P conditions also yielded high biomass, but 25% lipids with increased amounts of UFAs. Red light emitting diode (RLED) without P & low N conditions yielded 46% lipids with lowest biomass. PAR and WWLED & WLED illuminated conditions were found suitable respectively for biodiesel feedstock lipids and UFA-rich lipids for multiple applications.

译文

为了最大限度地提高用于食品或生物燃料原料的生物量和脂质产量,对雨生红球藻SCCAP K-0084培养的九个胁迫条件进行了测试,考虑了氮和/或磷的限制、光强度和质量。在240 μ mol光子m(-2) sec(-1) 的光照下,光合有效辐射 (PAR),暖白光发光二极管 (WWLED) 和白光发光二极管 (WLED) 是最佳的胁迫调节因子。没有P & 低N条件的PAR产生高生物量,其中33% 脂质含有增加的C16:0和C18:0饱和脂肪酸,以及减少的不饱和脂肪酸 (ufa) (油酸、亚油酸和 α/γ-亚麻酸)。没有磷条件的WWLED和WLED也产生高生物量,但25% 脂质,增加了UFAs的量。没有P & 低N条件的红色发光二极管 (RLED) 产生具有最低生物量的46% 脂质。发现PAR和WWLED和WLED照明条件分别适用于多种应用的生物柴油原料脂质和富含UFA的脂质。

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