食品科学 ›› 2013, Vol. 34 ›› Issue (22): 246-249.doi: 10.7506/spkx1002-6630-20132249

• 分析检测 • 上一篇    下一篇

次甲基蓝显色法定量海参硫酸软骨素

续晓琪,薛长湖,张翠玉,于 龙,王彦超,常耀光   

  1. 中国海洋大学食品科学与工程学院,山东 青岛 266003
  • 收稿日期:2012-12-30 修回日期:2013-10-29 出版日期:2013-11-25 发布日期:2013-12-05
  • 通讯作者: 常耀光 E-mail:changyg@ouc.edu.cn
  • 基金资助:

    国家自然基金项目;国家自然基金项目;高等学校博士科学点专项科研基金

Determination of Chondroitin Sulfate from Sea Cucumber by Methylene Blue Colorimetry

XU Xiao-qi,XUE Chang-hu,ZHANG Cui-yu,YU Long,WANG Yan-chao,CHANG Yao-guang   

  1. College of Food Science and Engineering, Ocean Universitity of China, Qingdao 266003, China
  • Received:2012-12-30 Revised:2013-10-29 Online:2013-11-25 Published:2013-12-05

摘要:

提取仿刺参、海地瓜、梅花参、美国肉参及北大西洋瓜参5种海参中的海参硫酸软骨素作为标准品,以次甲基蓝与阴离子聚合物形成显色的超分子复合物为理论基础,建立一种海参硫酸软骨素的定量方法。将1.00mL质量浓度适当的海参硫酸软骨素溶液与8.00mL 5mmol/L 磷酸氢二钾-磷酸二氢钾缓冲液(pH7.0)及1.00mL次甲基蓝溶液(0.18mg/mL)混合,其后立即测定545nm波长处的吸光度,吸光度代入对应标准曲线即可计算得出样品质量浓度。该方法操作简便,检出限为1.6~1.8μg/mL,定量限为5.2~6.2μg/mL,精密度、回收率高,可实现对海参硫酸软骨素的快速定量测定。

关键词: 海参, 海参硫酸软骨素, 次甲基蓝, 比色, 测定

Abstract:

In this study, employing sea cucumber chondroitin sulfate standard samples extracted from 5 species of sea
cucumber, an efficient and rapid colorimetric method for determination of chondroitin sulfate from sea cucumber was established
based on the theory that methylene blue and anionic polymer can form supramolecular complex. The colorimetric
method was determined as follows: detection at 545 nm immediately following mixing of 1.00 mL of sea cucumber
chondroitin sulfate solution with 8.00 mL of 5 mmol/L pH 7.0 K2HPO4/KH2PO4 buffer and 1.00 mL of methylene blue
(0.18 mg/mL) and subsequent calculation of chondroitin sulfate concentration from the absorbance using the pre-prepared
calibration curve. This method proved to be simple, accurate and high-recovery and allow rapid quantitative determination
of sea cucumber chondroitin sulfate.

Key words: sea cucumber, sea cucumber chondroitin sulfate, methylene blue, colorimetry, determination

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