脯氨酸 (Proline, Pro)是一种环状的α-亚氨基酸,呈中性,等电点为6.30,水中溶解度比任何氨基酸都大,25℃时100g水中可溶162g左右,易潮解不易得结晶,有甜味,与茚三酮溶液共热,生成黄色化合物,一旦进入肽链后,可发生羟基化作用,从而形4-羟脯氨酸,是组成动物胶原蛋白的重要成分。羟脯氨酸也存在于多种植物蛋白质中,尤其与细胞壁的形成有关,在正常情况下脯氨酸含量较低,但在逆境下 (旱、热、冷、冻、盐碱等),常有脯氨酸的明显积累,即积累指数与植物的抗逆性有关,在临床、生物材料、工业等方面均有广泛应用。
脯氨酸 (PRO)提取试剂主要用于提取植物中的脯氨酸,500ml可提取100次样本左右。该试剂仅用于科研领域,不适用于临床诊断或其他用途。
自备材料:
1、蒸馏水
2、研钵或匀浆器、离心管或试管、滤纸或纱布、水浴锅
操作步骤(仅供参考):
1、取新鲜植物组织,清洗干净,擦干,切碎,迅速称取0.5g,加入5ml PRO提取试剂后匀浆或研磨,沸水浴10min (期间经常摇动),混匀。
2、用滤纸或纱布过滤,滤液即为脯氨酸提取液,4℃保存备用。
注意事项:
1、脯氨酸 (PRO)提取试剂应密闭保存,避免有效成分挥发。
2、试剂开封后请尽快使用,以防影响后续实验效果。
3、为了您的安全和健康,请穿实验服并戴一次性手套操作。
Proline (Pro) is a cyclic α-imino acid. It is neutral with an isoelectric point of 6.30, and has a higher solubility in water than any other amino acid—approximately 162 g can be dissolved in 100 g of water at 25℃. It is hygroscopic and difficult to crystallize, with a sweet taste. When heated together with ninhydrin solution, it forms a yellow compound. Once incorporated into the peptide chain, proline can undergo hydroxylation to form 4-hydroxyproline, which is an important component of animal collagen. Hydroxyproline also exists in various plant proteins and is particularly associated with cell wall formation. Under normal conditions, the proline content is relatively low, but it often accumulates significantly under stress conditions (drought, heat, cold, freezing, salinization, etc.). The accumulation index is related to the stress resistance of plants. Proline has a wide range of applications in clinical practice, biomaterials, industry, and other fields.
This Proline (PRO) Extraction Reagent is mainly used for extracting proline from plant. 500 ml of the reagent can be used for approximately 100 sample extractions. Note: This reagent is intended for research purposes only and not for clinical diagnosis or any other applications.
Materials to Be Prepared by the User
1. Distilled water
2. Mortar or homogenizer, centrifuge tubes or test tubes, filter paper or gauze, water bath
Operating Procedures (For Reference Only)
1. Take fresh plant tissues, rinse them thoroughly, dry them, cut them into small pieces, and weigh 0.5 g of the samples quickly. Add 5 ml of PRO Extraction Reagent, homogenize or grind the mixture, heat it in a boiling water bath for 10 min (shake frequently during heating), and mix well.
2. Filter the mixture with filter paper or gauze. The filtrate is the proline extract, which can be stored at 4℃ for later use.
Precautions
1. The Proline (PRO) Extraction Reagent should be stored in a sealed container to avoid volatilization of active ingredients.
2. Please use the reagent as soon as possible after opening to prevent affecting the subsequent experimental results.
3. For your safety and health, wear a lab coat and disposable gloves during operation.