Cytoskeleton and Early Development in Fucoid Algae

Cell polarization and asymmetric cell divisions play important roles during development in many multicellular eukaryotes. Fucoid algae have a long history as models for studying early developmental processes, probably because of the ease with which zygotes can be observed and manipulated in the laboratory. This review discusses cell polarization and asymmetric cell divisions in fucoid algal zygotes with an emphasis on the roles played by the cytoskeleton.

膜分离技术在岩藻寡糖分离纯化中的应用

膜分离技术是一种先进的选择性分离技术,这门技术出现在20世纪初,并在20世纪60年代后迅速崛起。膜分离技术由于兼有分离、浓缩、纯化和精制的功能,又有高效、节能、环保、分子级过滤及过滤过程简单、易于控制等特征具有自身独特的优势,随着工业的不断发展,膜分离技术已经广泛应用在工业水处理当中。现已对膜分离技术的各个领域开展了研究工作,并推广于制造业及工业应用。本文介绍了膜分离技术用于一种生物大分子的分离纯化应用,以马尾藻为原料,采用传统水体醇沉的方法制备出多糖,经过一些预处理操作,并配合以膜技术的综合设置为分离提纯的方法,使岩藻寡糖的纯度得到很大的提高,具体表现为除盐,除砷,除杂蛋白等。经过试验验证:采用微滤、超滤、纳滤三者结合的综合膜处理操作之后,能使岩藻寡糖的纯度有显著提高。