ABSTRACT

Marine macroalgae are cultivated for diverse applications, from biofuel and biogas to biofiltering, from food to cosmetics or pharmaceuticals. Since macroalgae cultivation does not compete with land-based food crops for the necessary arable land or fresh water, it can increase the possibilities of sustainably harvested biomass. New technologies permit even land-based growing of marine macroalgae, besides the more common coastal or offshore cultivation. All these technologies, however, raise the question of how to provide ideal cultivation conditions, especially for adherent macroalgae, and of how to harvest them economically and sustainably. While some reports about growing marine macroalgae on diverse textile materials, such as polyester ropes or polypropylene nets, can be found in the literature, we report here for the first time on the growth of a marine macroalga on knitted fabrics. In our study, Ectocarpus sp. was cultivated in shallow rectangular cultivation vessels on knitted fabrics of various materials and structures revealing a significant influence of both parameters. Undesired changes of the pH value in the cultivation system as well as foam generation were attributed to textile auxiliaries. Considering all these influences, the best-suited knitted fabrics were identified as open-pore structures from hairy yarns made partly or completely from natural fibres.

摘要

海洋大型藻类被培育用于多种应用，从生物燃料和沼气到生物过滤，从食品到化妆品或药品。由于大型藻类种植不会与以土地为基础的粮食作物争夺必要的耕地或淡水，因此它可以增加可持续收获生物质的可能性。除了更常见的沿海或近海养殖外，新技术甚至可以在陆地上种植海洋大型藻类。然而，所有这些技术都提出了如何提供理想的培养条件，特别是对于附着的大型藻类，以及如何经济和可持续地收获它们的问题。虽然在文献中可以找到一些关于在各种纺织材料（例如聚酯绳索或聚丙烯网）上生长海洋大型藻类的报道，我们在这里首次报道了一种海洋大型藻类在针织面料上的生长情况。在我们的研究中，Ectocarpus sp。在各种材料和结构的针织织物上的浅矩形培养容器中培养，揭示了这两个参数的显着影响。培养系统中 pH 值的意外变化以及泡沫的产生归因于纺织助剂。考虑到所有这些影响，最适合的针织面料被确定为部分或完全由天然纤维制成的毛纱的开孔结构。