计算溶液所需的质量、体积或浓度。
BioReagent,生物染色剂,用于显微镜 级 ,适用于对基线干扰要求严格的色谱和分析工作流程。
避光,室温。常规运输 。请查阅批次 COA 获取详细规格。
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在色谱分析、有机合成和交叉偶联反应领域已被 1403 篇同行评审文献引用。
亚甲基蓝(Methylene blue)又称美蓝、次甲基蓝、次甲蓝等,含水亚甲基蓝的分子式为C₁₆H₂₄ClN₃O₃S,分子量为373.9,CAS号为7220-79-3。活细胞具有新陈代谢作用,从而使活细胞内有较强的还原能力,能使美蓝从蓝色的氧化型变为无色的还原型。因此活细胞内的美蓝呈无色,死细胞或衰老的细胞还原能力极弱或消失,被美蓝染成蓝色或淡蓝色。
吕氏碱性美蓝染色液常用于酵母菌的染色,不但可以观察酵母菌的形态,还可以区分活细胞和死细胞。因其容易氧化,染色结果不宜长久保存。
使用方法
1、取一滴吕氏碱性美蓝染色液于载玻片中央,用接种环取酵母菌与其混合均匀。
2、取一块盖玻片,将盖玻片一边与菌体接触,缓缓将盖玻片倾斜并覆盖在菌液上。
3、放置约 3min 后,先用低倍镜后用高倍镜观察酵母的形态和出芽情况,并根据颜色区别死活细胞。
4、染色 30min 后,可再次观察,注意活细胞的变化。
染色结果
| 酵母菌活细胞 | 无色 |
| 酵母菌死细胞 | 蓝色或淡蓝色 |
注意事项
1、取酵母菌时,应注意无菌操作。
2、在载玻片上涂抹酵母菌时,动作应轻柔以免破坏细胞。
3、为了您的自身安全,使用试剂前,请做好防护,如穿实验服,带手套等。
Methylene blue, also known as methylthioninium chloride, methylene blue, or basic blue 9, has the molecular formula C₁₆H₂₄ClN₃O₃S for its hydrated form, a molecular weight of 373.9, and a CAS number of 7220-79-3. Living cells exhibit metabolic activity, which confers strong reducing capacity within them. This reduces methylene blue from its blue oxidized form to its colorless reduced form. Consequently, methylene blue appears colorless inside living cells. Dead or senescent cells possess very weak or no reducing capacity and are therefore stained blue or pale blue by methylene blue.
Löffler's alkaline methylene blue staining solution is commonly used for staining yeast cells. It not only allows observation of yeast morphology but also distinguishes between live and dead cells. Due to its susceptibility to oxidation, the staining results should not be stored for extended periods.
Usage Protocol
1. Place a drop of Löffler's alkaline methylene blue staining solution onto the center of a clean glass slide. Using an inoculation loop, mix a small amount of yeast culture uniformly with the stain.
2. Take a coverslip, place one edge in contact with the suspension, and gently lower the coverslip to cover the mixture.
3. Allow it to stand for approximately 3 minutes. First observe under low magnification, then switch to high magnification to examine yeast morphology and budding. Distinguish between live and dead cells based on their color.
4. After 30 minutes of staining, observe again to note any changes in the live cells.
Staining Results
| Yeast Cell Type | Color |
| Live yeast cells | Colorless |
| Dead yeast cells | Blue or pale blue |
Precautions
1. When handling yeast cultures, aseptic technique must be observed.
2. When spreading the yeast culture on the glass slide, use gentle motions to avoid damaging the cells.
3. For your personal safety, please take appropriate protective measures, such as wearing a lab coat and gloves, before using the reagents.
4. This product is for research purposes only; any other use is strictly prohibited.
H315: 引起皮肤刺激
H319: 引起严重眼睛刺激
H335: 可能引起呼吸道刺激
H373: 通过长时间或反复暴露对器官造成损害
H302: 吞食有害
P261: 避免吸入灰尘/烟雾/气体/雾/蒸汽/喷雾
P305+P351+P338: 如进入眼睛:用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出,取出隐形眼镜。继续冲洗。
P280: 戴防护手套/穿防护服/戴防护眼罩/戴防护面具。
P302+P352: 如皮肤沾染:用水充分清洗。
P321: 特殊处理(请参阅此标签上的...)。
P405: 密闭存放
P501: 将内容物/容器处理到。。。
P264: 处理后要彻底洗手。
P260: 不要吸入灰尘/烟雾/气体/雾/蒸汽/喷雾。
P271: 仅在室外或通风良好的地方使用。
P270: 使用本产品时,请勿进食、饮水或吸烟。
P304+P340: 如误吸入:将人转移到空气新鲜处,保持呼吸舒适体位。
P403+P233: 存放在通风良好的地方。保持容器密闭。
P362+P364: 脱掉沾污的衣服,清洗后方可重新使用。
P330: 漱口
P264+P265: 处理后彻底洗手[和…]。不要触摸眼睛。
P301+P317: 如果被吞咽:请寻求医疗帮助。
P337+P317: 如果眼睛刺激持续:寻求医疗帮助。
P332+P317: 如果出现皮肤刺激:请寻求医疗帮助。
P319: 如果你感到不适,请寻求医疗帮助。
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | L1509207 | |
| 分析证书 | L1509207 |
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