CAJ | 학술논문

通过气泡柱光反应器评价了两株硅藻筒柱藻(Cylindrotheca fusiformis)和纤细角毛藻(Chaetoceros gracilis)的生物量、油脂及甘油三脂的积累.结果发现,其生物量与油脂产率相当,脂肪酸组成方面,也均以C16:0和C16:1为主,但是筒柱藻的油脂组成以甘油三酯为主,纤细角毛藻的油脂以单酰甘油酯、磷脂和糖脂为主.通过培养条件的优化,发现相比于降低初始氮元素与硅元素,降低培养液盐度,能够获得更高的生物量、油脂以及甘油三脂产率.通过筒柱藻批次培养最高获得了0.36 g/(L·d)的甘油三脂产率,且甘三酯占收获干物质的50%以上,具有相当好的应用潜力.
통과기포주광반응기평개료량주규조통주조(Cylindrotheca fusiformis)화섬세각모조(Chaetoceros gracilis)적생물량、유지급감유삼지적적루.결과발현,기생물량여유지산솔상당,지방산조성방면,야균이C16:0화C16:1위주,단시통주조적유지조성이감유삼지위주,섬세각모조적유지이단선감유지、린지화당지위주.통과배양조건적우화,발현상비우강저초시담원소여규원소,강저배양액염도,능구획득경고적생물량、유지이급감유삼지산솔.통과통주조비차배양최고획득료0.36 g/(L·d)적감유삼지산솔,차감삼지점수획간물질적50%이상,구유상당호적응용잠력.
The biomass, total lipids and Triacylglycerol contents of Cylindrotheca fusiformis and Chaetoceros gracilis were measured in batch, with bubble column photobioreactor. The results showed that the biomass and total lipid productivity were similar. The fatty acids composition of lipid from them were mainly C16:0 and C16:1, The composition of extracted lipid from C. fusiformis was mainly TAG, while in C. gracilis was mainly monoacylglyc-erol, phospholipids and glycolipids. Decreased the salinity of medium, the biomass, lipid prodcutivity, and TAG productivity were higher than which N or Si was limited. In these studies, TAG productivity can reach 0.36g/(L·d), more than half of dry biomass. C.fusiformis has good potential capacity to be the microalgae species for microalgae biofuel production.