Departamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago 8370251, Chile.
Centro de Investigación Marina Quintay (CIMARQ), Facultad de Ciencias de la Vida, Universidad Andres, Bello, Quintay, Valparaíso 2531015, Chile.
Molecules. 2022 Oct 12;27(20):6832. doi: 10.3390/molecules27206832.
Seaweed aquaculture is affected by natural and anthropogenic stressors, which put the biomass productivity of the cultures at risk. Seaweed biomass for commercial purposes, principally in pharmaceutical and/or nutraceutical applications, needs to be free of pollutants; therefore, controlled cultures have relevance in regulating the quality of biomass. The aim of this work was to demonstrate the successful utilization of controlled outdoor cultures to remove excess heavy metal accumulation in , an important commercial seaweed farming model. Specifically, we designed a simple and operational heavy metal depuration protocol, utilizing seawater and tap water removal, which permitted the concentration reduction of 10 heavy metals, including As, Cu, and Cd but not Zn, from the biomass at 7 days of culture. The percentage of depuration of the heavy metals ranged from 32 to 92% at 7 days, which was maintained throughout 21 days of culture. During the culture period, the monitored physicochemical parameters (temperature, salinity, and dissolved oxygen, among others) remained stable, with an increase in the daily growth rate (DGR% d) of the biomass recorded after 14 days of culture. Consequently, the experimental setup was successful for heavy metal depuration, which highlights the importance of controlled outdoor cultures as important tools of sustainability.
海藻养殖受到自然和人为胁迫因素的影响，这使养殖生物量的生产力面临风险。用于商业目的的海藻生物量，主要用于制药和/或营养保健品应用，需要没有污染物；因此，受控培养在调节生物质质量方面具有相关性。本工作旨在展示受控室外培养在去除 中的过量重金属积累方面的成功应用， 是一种重要的商业海藻养殖模式。具体而言，我们设计了一种简单且可操作的重金属净化方案，利用海水和自来水去除，可在 7 天的培养期内将 10 种重金属（包括 As、Cu 和 Cd 但不包括 Zn）的浓度从生物质中降低。7 天时，重金属的净化率为 32%至 92%，在 21 天的培养期内保持稳定。在培养期间，监测到的理化参数（温度、盐度和溶解氧等）保持稳定，在培养 14 天后记录到生物质的日增长率（DGR% d）增加。因此，该实验设置在重金属净化方面取得了成功，这突显了受控室外培养作为可持续性重要工具的重要性。
