Romero-Vargas Agustín, Fdez-Güelfo Luis Alberto, Blandino Ana, Díaz Manuel J, Díaz Ana Belén
Department of Chemical Engineering and Food Technology, Wine and Agrifood Research Institute (IVAGRO), University of Cádiz - International Campus of Excellence (ceiA3), 11510 Puerto Real, Cádiz, Spain.
Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cádiz - International Campus of Excellence (ceiA3), 11510 Puerto Real, Cádiz, Spain.
Bioresour Technol. 2023 Nov;388:129721. doi: 10.1016/j.biortech.2023.129721. Epub 2023 Sep 18.
The biological invasion caused by the invasive macroalga Rugulopteryx okamurae is causing increasing concern in southern Europe. To reduce its impact, this brown alga can be treated from a biorefinery approach. In this study, the macroalga is used as raw material to obtain fermentable sugars, which can be converted into high value-added products. The alga was exposed to hydrothermal and hydrothermal acid pretreatment and the pretreated biomass was used for enzymatic hydrolysis, achieving a hydrolysate with a reducing sugar concentration of almost 25 g/L (49.2% more than with non-pretreated alga). In addition, the combined severity factor was calculated to identify the best pretreatment conditions, finding the optimum in those pretreatments performed with 0.2 N HCl concentration and 15 min reaction time. Based on the results, it would be interesting to carry out new studies using the saccharified medium obtained under optimal conditions to obtain value-added compounds by fermentation.
入侵大型海藻冈村凹顶藻引起的生物入侵在南欧日益受到关注。为降低其影响，这种褐藻可采用生物炼制方法进行处理。在本研究中，该大型海藻被用作原料来获取可发酵糖，这些可发酵糖能够转化为高附加值产品。将海藻进行水热和水热酸预处理，并将预处理后的生物质用于酶水解，得到了还原糖浓度近25 g/L的水解产物（比未预处理的海藻高出49.2%）。此外，计算了综合强度因子以确定最佳预处理条件，发现在0.2 N HCl浓度和15分钟反应时间的预处理中达到了最优。基于这些结果，利用在最佳条件下获得的糖化培养基通过发酵来获取增值化合物开展新的研究将会很有意义。
