CAJ | 학술논문

为探索3种淡水硅藻(小头端菱形藻、尖针杆藻、肘状针杆藻丹麦变种)作为生物柴油原料的潜能,培养并检测了其油脂含量及成分.结果表明:小头端菱形藻生长周期最短,生物量最高.3种淡水硅藻中总脂含量为2.92%～9.2500,小头端菱形藻的总脂含量最高,达9.25 %;脂肪酸的组成相似,且3种硅藻主要脂肪酸成分是豆蔻酸(C14:0)、软脂酸(C16:0)、棕榈油酸(C16:1)、油酸(C18:1)、亚油酸(C18:2)和十八碳四烯酸(C18:4).不饱和脂肪酸含量均占总脂肪酸含量的60%以上,小头端菱形藻达63.54%.进一步改善培养条件后小头端菱形藻可作为生产生物柴油的原料.
위탐색3충담수규조(소두단릉형조、첨침간조、주상침간조단맥변충)작위생물시유원료적잠능,배양병검측료기유지함량급성분.결과표명:소두단릉형조생장주기최단,생물량최고.3충담수규조중총지함량위2.92%～9.2500,소두단릉형조적총지함량최고,체9.25 %;지방산적조성상사,차3충규조주요지방산성분시두구산(C14:0)、연지산(C16:0)、종려유산(C16:1)、유산(C18:1)、아유산(C18:2)화십팔탄사희산(C18:4).불포화지방산함량균점총지방산함량적60%이상,소두단릉형조체63.54%.진일보개선배양조건후소두단릉형조가작위생산생물시유적원료.
Three strains of freshwater diatoms(Nitzschia ca pitellata,Synedra acus,Synedra ulna var.danica)were cultured and their lipid content and composition were examined and analyzed to assess the potential of these microalgae as biodiesel feedstocks.Growth period of Nitzschia capitellata was shorter and its biomass higher than that of Synedra acus and Synedra ulna var.danica.Total lipidrepresented 2.92%～9.25%of dry weight with the highest percentage in Nitzschia capitellata(9.25%).The fatty acid component was similar and indicated that the main components were myristic(C14:0),palmitic(C16:0),palmitoleic(C16:1),oleic(C18:1),linoleic(C18:2)and parinaric acids(C18:4);The percentage of unsaturated fatty acids(UFAs)in each lipid fraction was more than 600o of the total fatty acids with Nitzschia capitellata reaching up to 63.54%.The results indicated that Nitzschia capitellata could be used as a biodiesel feedstock after further improvement of the culture conditions.