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| 浸洗对淡干海带中主要金属元素含量及海藻酸盐组成的影响 |
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潘若才,王兵兵,赵卫,龙晓静,朱嘉琳,朱顺生,姚久勇,李凯,夏延致①
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青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071,青岛大学纤维新材料与现代纺织国家重点实验室培育基地 山东 青岛 266071
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| 摘要: |
| 以烟台海域淡干海带为实验材料, 对浸洗前后其主要金属元素含量及海藻酸根阴离子基团含量进行了研究。结果表明: 淡干海带经过浸洗后钾、钠元素含量下降60%以上, 镁元素含量下降31.6%, 钙、锶元素含量下降小于10%, 海藻酸根阴离子基团相对含量上升了一倍; 通过比较主要金属阳离子和海藻酸根阴离子基团含量, 证明浸洗之后的海带样品中各金属元素主要以海藻酸盐的形式存在于海带中, 计算得到各类海藻酸盐含量(湿重, wt%)依次为: 海藻酸钾22.2%、海藻酸钙14.6%、海藻酸镁11.4%、海藻酸钠10.5%。XRD (X-Ray Diffraction, X射线衍射)分析表明海带浸出物含有无机盐类物质, 在浸洗之后海带样品无明显无机盐的衍射峰, 证明浸洗可除去海带样品中的无机盐。 |
| 关键词: 淡干海带 浸洗 元素分析 海藻酸盐 |
| DOI：10.11693/hyhz20130900135 |
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| 基金项目:山东省泰山学者计划; 国家重点基础研究发展计划(973 计划)前期研究专项, 2011CB612308 号; 山东省优秀创新团队发展计划, TD200902 |
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| CONTENT CHANGES OF MAIN METALLIC ELEMENTS AND ALGINATES IN LAMINARIA JAPONICA BY LEACHING |
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Pan Ruocai,Wang Bingbing,Zhao Wei,Long Xiaojing,Zhu Jialin,Zhu Shunsheng,Yao Jiuyong,Li Kai and Xia Yanzhi
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State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University,State Key Laboratory Cultivating Base of Advanced Fibers and Textile Materials,Qingdao University
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| Abstract: |
| We studied the composition change of main metallic elements and alginates in Laminaria japonica collected in Yantai, Shandong, China after being leached. The result shows that leaching reduced contents of K and Na by more than 60%, Mg by 31.6%, and Ca, Sr by <10%, while nearly doubled the relative content of alginate. The content of potassium alginate, calcium alginate, magnesium alginate, and sodium alginate is 22.2%, 14.6%, 11.4%, 10.5% (wt%) respectively. XRD analysis reveals that the extract of L. japonica contains inorganic substances, no obvious diffraction peaks of inorganic salt were shown after being leached. Therefore, leaching can remove mineral salt in L. japonica. |
| Key words: Laminaria japonica leaching elemental analysis alginates |