CN104076026A - 一种氯化妥龙在检测柑橘果皮机械损伤中的用途 - Google Patents

一种氯化妥龙在检测柑橘果皮机械损伤中的用途 Download PDF

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CN104076026A
CN104076026A CN201310096173.3A CN201310096173A CN104076026A CN 104076026 A CN104076026 A CN 104076026A CN 201310096173 A CN201310096173 A CN 201310096173A CN 104076026 A CN104076026 A CN 104076026A
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toluidine blue
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tolonium chloride
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CN104076026B (zh
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程运江
吴武
刘润生
邓秀新
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Huazhong Agricultural University
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Abstract

本发明公开了一种氯化妥龙在检测柑橘果皮机械损伤中的应用,其过程是:1:选择柑橘果实,清洗果面灰尘等杂质;2:配制氯化妥龙溶液,称取一定量氯化妥龙固体粉末,用自来水分别配制0.0005g/ml至0.005g/ml之间浓度的溶液;3:检测:将干净的柑橘果实放在氯化妥龙溶液中滚动浸泡10秒钟至2分钟,取出,用自来水冲洗干净;4:观察:如果有被染成蓝色的部位则为机械损伤部位,正常无颜色反应部位则没有机械损伤。方法易行,操作简便,检测快速,效果好,氯化妥龙在0.0005g/ml-0.005g/ml的浓度范围内,均可对柑橘果皮机械损伤部位产生明显的蓝色反应,而正常部位无反应,故此可检测柑橘果皮严重的和轻微的机械损伤。

Description

一种氯化妥龙在检测柑橘果皮机械损伤中的用途
技术领域
本发明属于生物化学领域,更具体涉及一种氯化妥龙在快速检测柑橘果皮机械损伤中的应用,它适用于柑橘果皮机械损伤的快速检测。
背景技术
柑橘(宽皮柑橘、橙、柚、柠檬、金柑、杂柑等)是世界及我国南方的第一大水果,但在采收、运输及商品化处理过程中易受到各种机械损伤,机械损伤不仅有损坏柑橘果实的外观品质,更重要的是伤口处易感染病原微生物,引起大量烂果。通常对于较严重的机械损伤人们肉眼就可发现,但对于轻微机械损伤则不易察觉,而轻微机械损伤更为普遍,更值得关注。只有找到简捷快速的柑橘果皮轻微机械损伤的检测方法,才能更准确地确定机械损伤发生环节,从而有针对性地解决问题。但是,目前国内外还没有简单有效的检测柑橘果皮机械损伤方法。
发明内容
本发明的目的是在于提供了一种氯化妥龙在检测柑橘果皮机械损伤中的用途,方法易行,操作简便,检测快速,效果好,氯化妥龙在0.0005g/ml-0.005g/ml的浓度范围内,均可对柑橘果皮机械损伤部位产生明显的蓝色反应,而正常部位无反应,故此可检测柑橘果皮严重的和轻微的机械损伤。
为了实现上述的目的,本发明采用以下技术方案:
氯化妥龙是一种蓝色粉末状化学试剂,易溶于水和酒精,溶液呈天蓝色,浓度越大,颜色越深,染色效果也越快越明显。柑橘果皮机械损伤后外果皮蜡质被破坏,氯化妥龙可与植物细胞纤维素结合,但不与柑橘果皮蜡质结合,故可用于快速检测柑橘果皮机械损伤。氯化妥龙是一种无毒性化学试剂,医学上可用来染色检测肿瘤细胞。
氯化妥龙检测柑橘果皮机械损伤实验:
柑橘果实(新鲜的伦晚脐橙、通风库贮藏的纽荷尔脐橙、通风库贮藏的椪柑、冷库贮藏的纽荷尔脐橙、冷库贮藏的椪柑)均取自华中农业大学园艺植物生物学教育部重点实验室,氯化妥龙购买于BIOSHARP公司,使用普通自来水溶解。
一种氯化妥龙在检测柑橘果皮机械损伤中的应用,其应用过程如下:
1:选择正常、无机械损伤的柑橘果实,模拟自然情况柑橘果皮机械损伤,用缝衣针针尖轻轻划伤果实外果皮,肉眼略微可见,做上标记,空气中放置半天时间;
2:配制氯化妥龙溶液,用电子分析天平准确称取氯化妥龙固体粉末0.150g、0.300g、0.600g、1.500g,各用300ml自来水,分别配制0.0005g/ml、0.001g/ml、0.002g/ml、0.005g/ml不同浓度的溶液;
3:检测:将处理的柑橘果实放在氯化妥龙溶液中滚动浸泡约10秒钟,取出,用自来水冲洗干净,观察;
4:显色结果:0.002g/ml、0.005g/ml浓度的氯化妥龙溶液使柑橘果皮用细针划破部位均被染上蓝色,溶液浓度越高,则染色越深,而低浓度溶液染色较浅,但也清晰可见。而0.0005g/ml、0.001g/ml的氯化妥龙溶液浸泡划伤处理的柑橘果实的划伤部位染色很淡,未经细针划破的柑橘果皮部位则没有显色反应。
5:用0.0005g/ml、0.001g/ml的氯化妥龙溶液浸泡划伤处理的柑橘果实,时间1分钟,取出,用自来水冲洗干净,观察;
6:显色结果:0.001g/ml的氯化妥龙溶液能使柑橘果皮划伤部位显色特别明显,与0.005g/ml浓度的氯化妥龙溶液染色10秒钟的效果相仿。但0.0005g/ml氯化妥龙溶液染色效果比较浅淡。
7:用0.0005g/ml:氯化妥龙溶液浸泡划伤处理的柑橘果实2分钟,取出,用自来水冲洗干净,观察;
8:显色结果:0.0005g/ml的氯化妥龙溶液能使柑橘果皮划伤部位显色特别明显,与0.005g/ml浓度的氯化妥龙溶液染色10秒钟的效果相仿。
本发明具有以下优点和效果:
本发明通过氯化妥龙对柑橘果皮机械损伤的快速检测实验证实了氯化妥龙对柑橘果皮机械损伤有很好的检测效果,证实氯化妥龙在柑橘采后各环节中用于检测果皮机械损伤广泛应用前景。同时,氯化妥龙是一种无毒的化学试剂,价格便宜,同时氯化妥龙用于检测肿瘤,在临床上已经使用多年,因此,可确定其安全性。这是国内外首次将该试剂应用于柑橘果实表面微创伤的检测。氯化妥龙能够快速简捷有效地检测柑橘果皮机械损伤,对操作人员安全无毒害作用,在柑橘采后生产企业快速检测果实采收和采后装箱、运输、分选等各环节中的损伤率,制定控制采后腐烂的措施等方面具有广泛的应用前景。
附图说明
图1为一种氯化妥龙(Toluidine blue O)的结构和分子式。
中文名:氯化妥龙;英文名:Toluidine blue O;分子式:C15H16ClN3S;分子量:305.83;CAS号:92-31-9。
图2为一种氯化妥龙(Toluidine blue O)对柑橘果皮机械损伤检测效果图。
柑橘果皮被划伤部位显色成深蓝色,而正常良好部位保持原有橙黄色,对比鲜明。上图为椪柑处理结果图,下图为纽荷尔脐橙处理结果图。
具体实施方式
实施例1:
一种氯化妥龙在检测柑橘果皮机械损伤中的应用,其基本过程是:
1:选择脐橙果实,清洗果面灰尘等杂质;
2:配制氯化妥龙溶液,称取2.000g氯化妥龙固体粉末,加入1升自来水配制成0.002g/ml浓度的溶液;
3:检测:将干净的柑橘果实放在氯化妥龙溶液中滚动浸泡10秒钟左右,取出,用自来水冲洗干净;
4:观察:如果有被染成蓝色的部位则为机械损伤部位,正常无颜色反应部位则没有机械损伤。
实施例2:
一种氯化妥龙在检测柑橘果皮机械损伤中的应用,其基本过程是:
1:选择椪柑或温州蜜柑果实,清洗果面灰尘等杂质;
2:配制氯化妥龙溶液,称取5.000g氯化妥龙固体粉末,加入1升自来水配制成0.005g/ml浓度的溶液;
3:检测:将干净的柑橘果实放在氯化妥龙溶液中滚动浸泡10秒钟左右,取出,用自来水冲洗干净;
4:观察:如果有被染成蓝色的部位则为机械损伤部位,正常无颜色反应部位则没有机械损伤。

Claims (1)

1.一种氯化妥龙在检测柑橘果皮机械损伤中的应用。
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