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食品抽检连连看②——合成着色剂的检测，更快更准，省时省力

来源：岛津（上海）实验器材有限公司分类：成果 2024-04-29 13:45:06 8阅读次数

食品抽检连连看②

2024食品国抽连连看难点拆解第二期，与您如约而至！本期内容小编为您介绍在合成着色剂检测中，大家普遍遇到的难点及应对方案。

点下图查看

新增四种着色剂结构式

GB 5009.35-2023

2024年3月6日，新版本《食品安全国家标准食品中合成着色剂的测定》(GB 5009.35-2023)正式实施。

伴随着新标准在日常食品检测的运用，不少用户反馈在面对该项目检验批次大幅度增加的情况下，40min的单次分析时长不满足分析效率的要求，寻求开发更快速的分析方法。

此外，采用弱阴离子交换小柱进行不同样品的前处理时，由于基质差异，往往需要手动调节流速来保证方法的一致性，部分色素含量较高的样品还会出现小柱过载的情况；而且溶液过膜后，部分色素(如赤藓红)的回收率会受到影响。

小编认真听取了各位用户的反馈，针对以上上机分析和前处理的痛点，为您带来SGLC应对合成着色剂检测的全方位解决方案——更快更准，省时省力。

PART 1 介绍分析时长仅20min的合成着色剂快速分析方法。

PART 2 进阶版快速分析方法，时长更是缩短到仅10min。

PART 3 介绍前处理方案优化，双重保障回收率。

跟着小编一起来看看吧！

文末附解决方案下载

及产品试用

PART 1

合成着色剂的快速分析方法

v1.0版

(分析时长20min)

仪器：Shimadzu Nexera LC-40D高效液相色谱仪

色谱柱：ShimNex CS C18

(5 μm, 4.6×150 mm; P/N: 380-01230-02)

柱温：40 ℃

检测波长：415/ 520/ 610 nm

流速：1.2 mL/min

进样量：10 μL

流动相

A：20 mM乙酸铵水溶液

B：甲醇

15种合成着色剂的快速分析 v1.0

(PDA 415nm/520nm/610nm)

PART 2

合成着色剂的快速分析方法

v2.0版

(分析时长10min)

仪器：Shimadzu Nexera LC-40B X3超高效液相色谱仪

色谱柱：ShimNex HE C18-AQ

(3 μm, 2.1×100 mm; P/N: 380-01238-03)

柱温：25 ℃

检测波长：415/ 520/ 610 nm

流速：0.4 mL/min

进样量：2 μL

流动相

A：20 mM乙酸铵水溶液

B：甲醇

15种合成着色剂的快速分析 v2.0

(PDA 415nm/520nm/610nm)

PART 3

前处理方案优化

(着色剂专用小柱+低吸附滤膜，回收率双重保障)

SHIMSEN Styra PGM着色剂专用小柱(150mg/6mL, PN: 380-00852-02)

选用工艺优化后的弱阴离子交换填料，满足标准要求的同时，能够实现提取液上柱后，重力作用下即可实现自流出，无需频繁调整流止阀，更方便批量测试，方法重现性更好——避免了提取液上柱抽滤，因基质成分差异导致流速不同，进而影响回收率。

洗脱液颜色对比——

SHIMSEN Styra PGM

& 其他品牌WAX小柱

(用户端平行测试，低浓度水平加标)

你知道吗

可提供低吸附的

亲水PTFE滤膜(SHIMSEN Disc

Hydrophilic PTFE, 13mm, 0.22 μm, PN: 380-00341)，通过顺畅，对比其他品牌和其他材质的滤膜，赤藓红等色素的过膜回收率更有保证。

合成着色剂过膜回收结果——

不同品牌不同材质滤膜

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[8]未定义数组索引: page
[8]未定义数组下标: 0
[2]Declaration of app\common\model\News::getAllList($filter = Array, $limit = 16, $order = Array, $with = Array) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\Company::getAllList($filter = Array, $limit = 20) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8]未定义数组索引: center
[8]Only variables should be passed by reference
[2]Declaration of app\common\model\NewsComment::getAllList($filter = Array, $limit = 16) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8192]Function create_function() is deprecated
[8192]Function create_function() is deprecated
[8]未定义数组索引: area
[8]未定义数组索引: st
[2]Declaration of app\common\model\Topic::getList($filter = Array) should be compatible with app\common\model\BaseModel::getList($filter = Array, $sort = Array)
[2]Declaration of app\common\model\Topic::getAllList($filter = Array, $field = 'id,md5,tit...', $limit = 0) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\TopicInfoList::getAllList($filter = Array, $limit = 8) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[8]未定义数组索引: center
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[8]未定义数组索引: cid
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[8]未定义数组下标: 0
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[8]未定义数组索引: center
[8]未定义数组索引: center
[8]未定义数组索引: center
[2]Declaration of app\common\model\Tag::getAllList($filter = Array, $with = Array, $limit = 5) should be compatible with app\common\model\BaseModel::getAllList($filter = Array, $with = Array, $limit = 0, $sort = Array, $field = 'a.*', $join = Array)
[2]Declaration of app\common\model\Tag::remove($filter) should be compatible with app\common\model\BaseModel::remove($filter = Array)
[8]未定义数组索引: center
[8]未定义数组索引: wtt_list

[ DB ] CONNECT:[ UseTime:0.000284s ] mysql:host=127.0.0.1;port=3306;dbname=120med;charset=utf8
[ SQL ] SHOW COLUMNS FROM `news_category` [ RunTime:0.000920s ]
[ SQL ] SELECT `id`,`name` FROM `news_category` WHERE `is_show` = 1 [ RunTime:0.000206s ]
[ SQL ] SELECT * FROM `news_category` WHERE `parent_id` = 0 AND `is_show` = 1 ORDER BY `sort` ASC,`id` DESC [ RunTime:0.000193s ]
[ SQL ] SHOW COLUMNS FROM `company` [ RunTime:0.000840s ]
[ SQL ] SHOW COLUMNS FROM `news` [ RunTime:0.000856s ]
[ SQL ] SELECT * FROM `news` WHERE `md5` = 'de49fbd9c125ecfb' AND `review_status` = 1 LIMIT 1 [ RunTime:0.000299s ]
[ SQL ] SHOW COLUMNS FROM `user_info` [ RunTime:0.000924s ]
[ SQL ] SELECT * FROM `user_info` WHERE `user_id` = 203 [ RunTime:0.000666s ]
[ SQL ] SELECT * FROM `company` WHERE `id` = 321 [ RunTime:0.000190s ]
[ SQL ] SHOW COLUMNS FROM `news_text` [ RunTime:0.000792s ]
[ SQL ] SELECT * FROM `news_text` WHERE `news_id` = 7542 [ RunTime:0.031440s ]
[ SQL ] SHOW COLUMNS FROM `news_belong_category` [ RunTime:0.000961s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 7542 [ RunTime:0.002068s ]
[ SQL ] SELECT * FROM `news_category` WHERE `id` IN (5) [ RunTime:0.000283s ]
[ SQL ] SHOW COLUMNS FROM `user_follow` [ RunTime:0.000821s ]
[ SQL ] SELECT `id` FROM `user_follow` WHERE `user_id` IS NULL AND `follow_user_id` = 203 LIMIT 1 [ RunTime:0.000196s ]
[ SQL ] SHOW COLUMNS FROM `news_comment` [ RunTime:0.000748s ]
[ SQL ] SELECT * FROM `news_comment` WHERE `news_id` = 7542 AND `parent_id` = 0 ORDER BY `id` DESC [ RunTime:0.000199s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `news_comment` WHERE `news_id` = 7542 LIMIT 1 [ RunTime:0.000141s ]
[ SQL ] SELECT * FROM `news` WHERE `is_show` = 1 AND `review_status` = 1 AND `id` IN (7542,7250,6441,4254,3286,2607,2639,7990,7987,7899) ORDER BY field(id,7542,7250,6441,4254,3286,2607,2639,7990,7987,7899) [ RunTime:0.000455s ]
[ SQL ] SELECT * FROM `user_info` WHERE `user_id` IN (203,473,235,639,197,811,316,245) [ RunTime:0.000817s ]
[ SQL ] SHOW COLUMNS FROM `topic` [ RunTime:0.000908s ]
[ SQL ] SELECT `id`,`md5`,`title`,`created_time` FROM `topic` WHERE `review_status` = 1 ORDER BY `id` DESC LIMIT 4 [ RunTime:0.000254s ]
[ SQL ] SHOW COLUMNS FROM `topic_info_list` [ RunTime:0.000803s ]
[ SQL ] SELECT * FROM `topic_info_list` WHERE `topic_id` = 1 ORDER BY `id` DESC LIMIT 2 [ RunTime:0.000166s ]
[ SQL ] SELECT * FROM `news` WHERE `id` IN (864,849) [ RunTime:0.000418s ]
[ SQL ] SELECT `id`,`md5`,`title`,`created_time` FROM `news` WHERE `review_status` = 1 AND `is_show` = 1 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000185s ]
[ SQL ] SHOW COLUMNS FROM `user` [ RunTime:0.000727s ]
[ SQL ] SELECT `a`.* FROM `user` `a` INNER JOIN `news` `b` ON `a`.`id`=`b`.`user_id` GROUP BY `a`.`id` ORDER BY `b`.`id` DESC LIMIT 10 [ RunTime:0.012755s ]
[ SQL ] SELECT * FROM `user_info` WHERE `user_id` IN (348,351,466,458,209,372,521,819,385,657) [ RunTime:0.000889s ]
[ SQL ] SHOW COLUMNS FROM `seo` [ RunTime:0.001039s ]
[ SQL ] SELECT * FROM `seo` WHERE `column_type` = '02' AND `page_type` = 'news' AND `info_id` = 7542 LIMIT 1 [ RunTime:0.000271s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 7542 [ RunTime:0.001717s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 7250 [ RunTime:0.001641s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 6441 [ RunTime:0.001622s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 4254 [ RunTime:0.001767s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 3286 [ RunTime:0.001742s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 2607 [ RunTime:0.001753s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 2639 [ RunTime:0.001678s ]
[ SQL ] SHOW COLUMNS FROM `tag` [ RunTime:0.000905s ]
[ SQL ] SELECT `md5` FROM `tag` WHERE `is_open` = 1 AND `tag` = '呼吸道病原体检测标本采集拭子厂家' LIMIT 1 [ RunTime:0.000220s ]
[ SQL ] SELECT `md5` FROM `tag` WHERE `is_open` = 1 AND `tag` = '呼吸道病原体检测标本采集拭子厂家' LIMIT 1 [ RunTime:0.000172s ]
[ SQL ] SELECT `md5` FROM `tag` WHERE `is_open` = 1 AND `tag` = '呼吸道病原体检测标本采集拭子厂家' LIMIT 1 [ RunTime:0.000149s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 7990 [ RunTime:0.001982s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 7987 [ RunTime:0.002349s ]
[ SQL ] SELECT * FROM `news_belong_category` WHERE `news_id` = 7899 [ RunTime:0.001669s ]
[ SQL ] SELECT * FROM `user` WHERE `id` = 203 LIMIT 1 [ RunTime:0.000188s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 348 LIMIT 1 [ RunTime:0.000213s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 348 LIMIT 1 [ RunTime:0.000168s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 351 LIMIT 1 [ RunTime:0.000171s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 351 LIMIT 1 [ RunTime:0.000162s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 466 LIMIT 1 [ RunTime:0.000163s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 466 LIMIT 1 [ RunTime:0.000139s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 458 LIMIT 1 [ RunTime:0.000163s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 458 LIMIT 1 [ RunTime:0.000186s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 209 LIMIT 1 [ RunTime:0.000154s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 209 LIMIT 1 [ RunTime:0.000203s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 372 LIMIT 1 [ RunTime:0.000185s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 372 LIMIT 1 [ RunTime:0.000160s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 521 LIMIT 1 [ RunTime:0.000152s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 521 LIMIT 1 [ RunTime:0.000186s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 819 LIMIT 1 [ RunTime:0.000181s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 819 LIMIT 1 [ RunTime:0.000190s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 385 LIMIT 1 [ RunTime:0.000171s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 385 LIMIT 1 [ RunTime:0.000159s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `follow_user_id` = 657 LIMIT 1 [ RunTime:0.000178s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `user_follow` WHERE `user_id` = 657 LIMIT 1 [ RunTime:0.000143s ]

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