Instituto de Química de San Luis, Av Ejercito de los Andes 950, D5700BPB San Luis, Argentina.
Facultad Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Av. Uruguay 151, L6300XAI Santa Rosa, La Pampa, Argentina; Instituto de Ciencias de la Tierra y Ambientales de La Pampa (INCITAP), Mendoza 109, L6302EPA Santa Rosa, La Pampa, Argentina.
Food Chem. 2018 Aug 15;257:295-301. doi: 10.1016/j.foodchem.2018.03.011. Epub 2018 Mar 8.
Arthrospira platensis and Arthrospira maxima are a type of blue-green microalga used as a dietary supplement (Spirulina). A low time-consuming ultrasound-assisted digestion (UAD) of Spirulina supplements for multielemental determination by microwave induced plasma atomic emission spectrometry (MPAES) was performed. Several parameters such as acid concentration (AC), thermostated water bath (TWB), digestion time (DT) and UAD - probe or bath - affecting the digestion process were evaluated through a full factorial design. Under the optimal conditions -100 °C for TWB, 5% for AC and 10 min for DT- and selecting the bath as the proper UAD system, the concentrations of 15 analytes (Al, Ba, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, V, Zn) were reported. The values are in accordance with the recommendation established by Food and Drug Administration (FDA) excepting for Cd. The knowledge of Spirulina multielemental composition contributes to an outstanding nutritional and toxicological report for human health.
钝顶螺旋藻和极大螺旋藻是一种蓝绿微藻，用作膳食补充剂（螺旋藻）。采用低耗时超声辅助消化（UAD），通过微波诱导等离子体原子发射光谱法（MPAES）对螺旋藻补充剂进行多元素测定。通过完全析因设计评估了几个参数，如酸浓度（AC）、恒温水浴（TWB）、消化时间（DT）和 UAD-探头或浴（影响消化过程）。在最佳条件下（TWB 为-100°C、AC 为 5%、DT 为 10 分钟），并选择浴作为适当的 UAD 系统，报告了 15 种分析物（Al、Ba、Ca、Cd、Cr、Cu、Fe、K、Mg、Mn、Na、Ni、P、V、Zn）的浓度。这些值符合食品和药物管理局（FDA）的建议，除了 Cd 之外。了解螺旋藻的多种元素组成有助于为人类健康提供出色的营养和毒理学报告。
