作　　者： ; ; ; ;

机构地区： 暨南大学生命科学技术学院化学系

出　　处： 《暨南大学学报（自然科学与医学版）》 2004年第5期621-625,共5页

摘　　要： 　极大螺旋藻活细胞经过冻干脱水处理,得到脱水的干细胞,在避光条件下,使干细胞再吸纳水,测定处理前后螺旋藻细胞的谱学性质.结果表明:鲜活细胞经脱水处理其光谱发生了明显变化,再吸水后从吸收光谱可以观察到一个恢复的过程.荧光发射光谱则发现,再吸水14h后,藻细胞的光合系数(PSI)逐渐闭合,使传递到PSI的能量发生转移,最终以捕光色素藻蓝蛋白的发射释放出来. The dried cells of Spirulina maxima which were obtained by frozen-dry were suspended in water solution, then re-absorbed by water under the condition of avoiding illumination. Their spectra were studied respectively before and after the Spirulina maxima was disposed. It indicated that there were great differences about the absorbance spectra, and the peaks of absorb has renewed after the cells re-absorbed water, and the PSI of clried cells which re-absorbed water after 14 hours was halted, thus phycocyanim was excited by the energy which came from the excitation energy in the PSI.

关 键 词： 极大螺旋藻 细胞脱水 再吸纳水 光谱特性

领　　域： [生物学]