Ferreira-Anta Tania, Torres Maria Dolores, Dominguez Herminia, Flórez-Fernández Noelia
CINBIO, Department of Chemical Engineering, Campus Ourense, Edificio Politécnico, Universidad de Vigo, As Lagoas, 32004 Ourense, Spain.
Foods. 2023 Apr 29;12(9):1859. doi: 10.3390/foods12091859.
Several bioactive compounds that hold a potential interest in the food industry as phenolic compounds, polysaccharides, proteins and vitamins, among others, are present in seaweeds. Green extraction technologies are the preferred way to obtain these compounds. Pressurized hot water extraction, from 160 to 220 °C, was tested to achieve high yields of these components from the edible brown seaweed, . The maximum fucoidan content was recovered at 160 °C, while the phloroglucinol content and antioxidant activity were maximum at 220 °C. The possibility of encapsulating these bioactive fractions using mannitol was assessed. The highest production yield of the polymeric particles was found using the 220 °C fraction (close to 75%). In order to formulate microparticles with bioactive potential, several ratios of liquid phases were assessed, 3:1, 1:1 and 1:3 (:), using the liquid fractions obtained at 160 °C and 220 °C. The yield production was always above 67%, being in the 1:3 ratio (160 °C:220 °C) and close to 75%. The rheological results indicated that the presence of microparticles enhanced the apparent viscosity of the aqueous dispersions with non-Newtonian profiles, achieving the highest viscosity for those formulated with microparticles from 160 °C:200 °C (3:1).
海藻中存在几种在食品工业中具有潜在价值的生物活性化合物，如酚类化合物、多糖、蛋白质和维生素等。绿色提取技术是获取这些化合物的首选方法。对160至220°C的加压热水提取进行了测试，以从可食用褐藻中获得这些成分的高产率。岩藻依聚糖含量在160°C时达到最高，而间苯三酚含量和抗氧化活性在220°C时最高。评估了使用甘露醇包封这些生物活性组分的可能性。使用220°C馏分发现聚合物颗粒的最高产率（接近75%）。为了制备具有生物活性潜力的微粒，使用在160°C和220°C获得的液体馏分评估了几种液相比例，3:1、1:1和1:3（:）。产率始终高于67%，在1:3比例（160°C:220°C）时接近75%。流变学结果表明，微粒的存在增强了具有非牛顿特性的水性分散体的表观粘度，对于由160°C:200°C（3:1）的微粒配制的分散体，粘度最高。
