The invention relates to a concurrent culture method for producing polyunsaturated fatty acids and fucoidan by means of fucoidan. The invention includes the application of mannitol in the production of polyunsaturated fatty acids and fucoidic yellowing in concurrently cultured diatoms, as well as the application of tea polyphenols or tea polyphenols in the production of polyunsaturated fatty acids and fucoidic yellowish by concurrently cultured diatoms. For the first time, mannitol was used as a carbon source, and it was found that mannitol could effectively increase the growth rate and yield of brown finger algae compared with other carbon sources, and also have better synthesis efficiency in the photosynthetic system pigment synthesis level than that of heterotrophic culture. In addition, the invention of tea polyphenols is the first time to use tea polyphenols. The bioactive substances can promote the absorption and utilization of carbon source effectively. By actual detection, the biomass can be increased by 108%, the content of the alga yellow substance is increased by 96%, and the content of EPA is raised by 122%.
【技术实现步骤摘要】
一种利用三角褐指藻生产多不饱和脂肪酸和岩藻黄质的兼养培养方法
本专利技术涉及一种利用三角褐指藻生产多不饱和脂肪酸和岩藻黄质的兼养培养方法,属生物工程
技术介绍
岩藻黄质(Fucoxanthin),又名岩藻黄素或褐藻黄素,属于类胡萝卜素的含氧衍生物,常见于褐藻和硅藻中。岩藻黄质在藻类细胞中主要行使光合系统中捕捉光能的作用。岩藻黄质与叶绿素a和叶绿素c组成岩藻黄质-叶绿素蛋白复合体(Fucoxanthin-ChlorophyllProtein,FCP)。在近年的研究中,岩藻黄质已被证明是一种安全有效的膳食补充剂,它可以促进新陈代谢并且不对神经系统造成影响,具有抗肥胖、抗糖尿病、抗氧化,抗炎、抗肿瘤等多种生理活性[1]。大量实验研究表明,岩藻黄质的减肥机理是由于它可以激活对脂肪分解有促进作用的UCP1线粒体解偶联蛋白的表达,达到分解脂肪细胞,防止脂肪堆积的作用[2]。岩藻黄质具有抗氧化的活性。抗氧化作用是类胡萝卜素的重要特征之一,其许多生物效应都涉及到清除活性氧的能力,这是其具有疾病预防作用的因素之一。最近研究发现岩藻黄质还可以通过调节Na+/K+-ATP酶的活性防止细胞膜过氧化。该试验还证实了由于岩藻黄质的作用,给缺乏视黄醇的老鼠喂养岩藻黄质可以逐渐提高过氧化氢酶和谷胱甘肽转移酶的活性,从而达到抗氧化的作用[3]。二十碳五烯酸(Eicosapentaenoicacid,EPA,C20H30O2)是含五个双键的多不饱和脂肪酸(Polyunsaturatedfattyacid,PUFA),属于ω-3脂肪酸。该脂肪酸家族主要包括α-亚麻酸(α-Linole ...
【技术保护点】
1.甘露醇在兼养培养硅藻生产多不饱和脂肪酸和/或岩藻黄质中的应用。
【技术特征摘要】
1.甘露醇在兼养培养硅藻生产多不饱和脂肪酸和/或岩藻黄质中的应用。2.如权利要求1所述的应用,其特征在于,所述甘露醇作为碳源配制成培养基,兼养培养硅藻生产多不饱和脂肪酸和岩藻黄质;进一步优选的,所述甘露醇的添加量为每升培养基添加1~20g;最优的,所述甘露醇的添加量为每升培养基添加2g。3.如权利要求1所述的应用,其特征在于,所述培养基,每升组份如下:1~20g甘露醇,0.1~10gNaNO3,10~40g海水盐,2~10mgNa2EDTA,1~9mgFeCl3•6H2O,2~12mgNaH2PO4•12H2O,10~60mgNa2SiO3•7H2O,0.001~0.1mgCuSO4•5H2O,0.002~0.2mgMgSO4•7H2O,0.001~0.1mgCoCl2•6H2O,0.02~2mgMnCl2•4H2O,0.001~0.01mgNa2MoO4•2H2O,0.0001~0.01mg生物素;更优的,所述培养基,每升组份如下:2g甘露醇,1gNaNO3,30g海水盐,4.37mgNa2EDTA,3.65mgFeCl3•6H2O,6.7mgNaH2PO4•12H2O,30mgNa2SiO3•7H2O,0.01mgCuSO4•5H2O,0.022mgMgSO4•7H2O,0.01mgCoCl2•6H2O,0.18mgMnCl2•4H2O,0.006mgNa2MoO4•2H2O,0.0005mg生物素。4.如权利要求1所述的应用,其特征在于,所述培养基还包括茶多酚或茶多酚活性成分,浓度0.05~2g/L;进一步优选的,茶多酚或茶多酚活性成分浓度为0.2g/L;根据本发明优选的,所述硅藻选自小环藻属(Cyclotella)、菱形藻属(Nitzschia)、舟形藻属(Navicula)、筒柱藻属(Cylindrotheca)或褐指藻属(Phaeodactylum);进一步优选的,所述褐指藻属(Phaeodactylum)为三角褐指藻,小环藻属(Cyclotella)为小环藻。5.如权利要求1所述的应用,其特征在于,步骤如下:(1)将硅藻培养至对数生长期,制得种子液;(2)将步骤(1)制得的种子液按5~50%的体积比接种至上述培养基中,在温度20~30℃、50~300μmolphotons·m−2·s−1光照条件下培养3~5天,然后维持培养体系中甘露醇浓度为1~20g/L,继续培养4~8天,制得含有多不饱和脂肪酸和岩藻黄质的发酵液;进一步优选的,所述步骤(2)中,培养条件为:温度23~25℃、光照条件80μmolphotons·m−2·s−1;更优的,光照条件的光周期为16h光照、8h黑暗;进一步优选的,所述步骤(2)中,维持甘露醇浓度为2g/L;进一步优选的,所述步骤(2)中,维持NaNO3浓度为0.1~10g/L;更优的,所述步骤(2)中,维持NaNO3浓度为1g/L。6.茶多酚或茶多酚活性成分在兼养培养硅藻生产多不饱和脂肪酸和/或岩藻黄质中的应用。7.如权利要求6所述的应用,其特征在于,所述的茶多酚中儿茶素类化合物质量百分比含量为65%~85%;优选的,所述茶多酚活性成分选自儿茶素类、黄酮及黄酮醇类、花青素类、酚酸及缩酚酸类和/或聚合酚...
【专利技术属性】
技术研发人员:范勇,李福利,胡光荣,王丽娟,
申请(专利权)人:中国科学院青岛生物能源与过程研究所,
类型:发明
国别省市:山东,37
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。