Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigaciones Científicas y Técnicas, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR/CONICET), Departamento de Química Orgánica, Ciudad Universitaria, 1428 Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Tecnología de Alimentos y Procesos Químicos (ITAPROQ/CONICET), Departamento de Industrias, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigaciones Científicas y Técnicas, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR/CONICET), Departamento de Química Orgánica, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
Food Chem. 2021 Jul 15;350:128659. doi: 10.1016/j.foodchem.2020.128659. Epub 2020 Nov 18.
Salicornia neei halophyte extends in Argentina seashores. To envisage potential applications, cell wall sequential extraction performed on dry plant yielded 1.1, 2.4, 0.3 and 0.9% of pectin fractions respectively extracted by room temperature water, 90 °C-water, CDTA and NaCO. They contained 21-33% uronic acids (UA) with low degree of methylation and 0.5-1.2 M ratios of neutral sugars to UA. High arabinose level suggests that long arabinan side-chains maintain cell wall flexibility in water deficit. Fractions also contained 10-36% of proteins. The KOH-soluble fractions (4.3%) were mainly arabinoxylans. At 2.0% w/v, pectin fractions developed "weak gel"-type networks with Ca, while arabinoxylans generated "dilute solutions". Cellulose (28%) and lignin (45.1%) were the main biopolymers in the final residue, which showed low water swelling capacity (3.6 mL/g) due to lignin, increasing when arabinoxylans were also present. Phenolics (9.8%) were mainly water-extractable. Salicornia is a source of biopolymers and antioxidants potentially useful for food applications.
盐角草是一种生长在阿根廷沿海的盐生植物。为了研究其潜在的应用，对干燥植物的细胞壁进行了连续提取，分别用室温水、90°C 水、CDTA 和 NaCO 提取了 1.1%、2.4%、0.3%和 0.9%的果胶级分。它们含有 21-33%的低甲氧基化程度的糖醛酸（UA）和 0.5-1.2 M 的中性糖与 UA 的摩尔比。高阿拉伯糖水平表明，长阿拉伯聚糖侧链在水分亏缺下保持细胞壁的柔韧性。级分还含有 10-36%的蛋白质。KOH 可溶级分（4.3%）主要是阿拉伯木聚糖。在 2.0% w/v 时，果胶级分与 Ca 形成“弱凝胶”型网络，而阿拉伯木聚糖则形成“稀溶液”。纤维素（28%）和木质素（45.1%）是最终残渣中的主要生物聚合物，由于木质素的存在，其水膨胀能力较低（3.6 mL/g），当阿拉伯木聚糖也存在时，其水膨胀能力增加。酚类（9.8%）主要是可水提的。盐角草是生物聚合物和抗氧化剂的来源，可能对食品应用有用。
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