Arsenic compounds in the edible red alga, Porphyra tenera, and in nori and yakinori, food items produced from red algae
Arsenic compounds in the edible red alga, Porphyra tenera, and in nori and yakinori, food items produced from red algae
复制标题
食用红藻（紫菜）以及由红藻生产的食品海苔和烤海苔中的砷化合物
DOI：
--
复制
发表时间：
1990
期刊：
影响因子：
--
通讯作者：
M. Morita
中科院分区：
文献类型：
--
作者：
Y. Shibata;K. Jin;M. Morita
用甲醇/水（1:1，v/v）从食用红藻、紫菜（日语为浅草）的冻干样品以及由红藻生产的食品紫菜和烤菜中提取砷化合物。通过高效液相色谱 (HPLC) 和电感耦合等离子体质谱仪 (ICPMS) 作为砷特异性检测器对提取物进行分析。在所有已检测的样品中均鉴定出两种含砷呋喃核苷，它们几乎占每个样品中所有可萃取砷（8.7–21 mg As Kg−1 干样品）。带有甘油-磷酸甘油部分的化合物在每个样品中占主导地位。通过氢化物发生和原子吸收光谱法对亚砷酸盐、砷酸盐、甲基胂酸盐和二甲基胂酸盐进行定量。所有样品中均检测到低水平的砷酸盐和二甲基砷酸盐（分别约为 0.15 和 0.05 mg As Kg−1 干样品）。仅在未加工的紫菜干样品中检测到亚砷酸盐含量为 0.005 mg As Kg−1。在所有样品中均未发现胂酸甲酯。
Arsenic compounds were extracted with methanol/water (1:1, v/v) from freeze-dried samples of the edible red alga, Porphyra tenera (asakusanori in Japanese), and also from nori and yakinori, food items produced from red algae. The extracts were analyzed by high-performance liquid chromatography (HPLC) with an inductively coupled plasma mass spectrometer (ICPMS) serving as an arsenic-specific detector. Two arsenic-containing ribofuranosides were identified in all samples tigated, and they accounted for almost all the extractable arsenic (8.7–21 mg As Kg−1 dry sample) in each sample. A compound bearing a glycer-ophosphoryl glycerol moiety was dominant in every sample. Arsenite, arsenate, methylarsonate, and dimethylarsinate were quantified by hydride generation and atomic absorption spectrometry. Arsenate and dimethylarsinate were detected in all samples at low levels (around 0.15 and 0.05 mg As Kg−1 dry sample, respectively). Arsenite was detected only in the unprocessed Porphyra tenera at 0.005 mg As Kg−1 dry sample. Methylarsonate was not found in any of the samples.