产品名称 : | PH9210 | 中性红/碱性红5/Neutral red |
产品品牌 : | 飞净 PHYGENE |
保存:RT,有效期3年。
原理:中性红是一种弱碱性 pH 指示剂,变色范围 pH6.4~8.0之间(由红变黄)。在中性或微碱性环境中,植物的活细胞能大量吸收中性红并向液泡中排泌,由于液泡在一般情况下呈酸性反应,因此,进入液泡的中性红便解离出大量阳离子而呈现樱桃红色,在这种情况下,原生质和细胞壁一般不着色;死细胞由于原生质变性凝固,细胞液不能维持在液泡内,因此,用中性红染色后,不产生液泡着色现象,相反,中性红的阳离子,却与带有一定负电荷的原生质及细胞核结合,而使原生质与细胞核染色。
Neutral red is a weakly alkaline pH indicator with a color change range of pH 6.4 to 8.0 (from red to yellow). In a neutral or slightly alkaline environment, the plant’s living cells can absorb a large amount of neutral red and excrete it into the vacuole. Because the vacuole is acidic under normal circumstances, the neutral red that enters the vacuole will dissociate in large quantities. Cation is cherry red. In this case, the protoplasm and cell wall are generally not colored; dead cells cannot be maintained in the vacuole due to the denaturation and solidification of the protoplasm. Therefore, after staining with neutral red, no vacuole staining occurs. On the contrary , The cation of neutral red binds to the protoplasm and cell nucleus with a certain negative charge to stain the protoplasm and cell nucleus.
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