cryoprotectant

简明释义

英[ˌkraɪəʊprəˈtekt(ə)nt]美[ˌkraɪoprəˈtektənt]

n. [生物] 冷冻保护剂；[生物] 低温防护剂

英英释义

单词用法

同义词

反义词

例句

1.Cryopreservation of tissue cultures of rice is usually influenced by some factors, such as material properties, cryoprotectant, freezing procedure, treatment after freezing and renewing culture.

水稻组织培养物超低温保存的效果常受到材料特性、冰冻保护剂、降温冰冻法、后处理及恢复培养等因素的影响。

2.Cryopreservation of tissue cultures of rice is usually influenced by some factors, such as material properties, cryoprotectant, freezing procedure, treatment after freezing and renewing culture.

水稻组织培养物超低温保存的效果常受到材料特性、冰冻保护剂、降温冰冻法、后处理及恢复培养等因素的影响。

3.During the process of cooling and thawing, embryos are subjected to a series of cryoinjuries such as cold shock, ice formation, cryoprotectant toxicity and osmotic effect.

超低温保存过程中所造成的冷冻损伤是制约鱼类胚胎超低温保存成功与否的关键，具体表现为渗透压影响、抗冻剂毒性、冰晶损伤等。

4.METHODS Pegylated CsA-liposome was prepared by a modified ethanol injection method, followed by sonication and lyophilization using sucrose as cryoprotectant.

方法采用改良的乙醇注入结合超声分散的方法制备环孢素长循环脂质体，蔗糖作为冻干保护剂冻干。

5.Selecting of proper cryoprotectant agents is a principle step of cryopreservation, for these agents play an important role in freezing cells.

低温保护剂在细胞的低温保存过程当中起着很重要的作用，选择合适的低温保护剂是低温保存过程中首要解决的问题。

6.The particle size was changed least after lyophilization when 15% trehalose was used as cryoprotectant.

以15%海藻糖做冻干保护剂的脂质体冻干前后粒径变化最小。

7.Screening from the various cryoprotectant, mannitol and sucrose were ensure to protect liposome.

最后确定以甘露醇和蔗糖合用作为冻干保护剂。

8.Audrey Smith reports the use of glycerol cryoprotectant for freezing red blood cells.

奥黛丽·史密斯报道可使用甘油作为抗冻剂保护冷冻的红细胞。

9.Researchers often add a cryoprotectant to preserve cells during freezing processes.

研究人员通常在冷冻过程中添加冷冻保护剂以保存细胞。

10.The use of cryoprotectant is essential in the field of reproductive biology for preserving sperm and eggs.

在生殖生物学领域，使用冷冻保护剂对于保存精子和卵子至关重要。

11.Without a suitable cryoprotectant, ice crystals can form and damage the cellular structure.

如果没有合适的冷冻保护剂，冰晶可能会形成并损害细胞结构。

12.Glycerol is a common cryoprotectant used in the preservation of biological samples.

甘油是一种常用的冷冻保护剂，用于生物样本的保存。

13.Scientists are studying new types of cryoprotectant that can improve the viability of frozen tissues.

科学家们正在研究新型的冷冻保护剂，以提高冷冻组织的存活率。

作文

Cryopreservation is a vital technique used in various fields such as biology, medicine, and agriculture. It involves cooling and storing cells, tissues, or even whole organisms at very low temperatures to preserve their viability and functionality for future use. One of the key components that make cryopreservation successful is the use of a substance known as a cryoprotectant, which plays a crucial role in protecting biological materials during the freezing process. In this essay, we will explore the importance of cryoprotectants, how they work, and their applications in different domains. The primary function of a cryoprotectant is to prevent the formation of ice crystals within cells and tissues during the freezing process. Ice crystals can cause significant damage to cellular structures, leading to cell death and loss of functionality. By using cryoprotectants, scientists can lower the freezing point of water inside cells, reducing the likelihood of ice crystal formation. Common examples of cryoprotectants include glycerol, dimethyl sulfoxide (DMSO), and ethylene glycol. These substances help maintain the integrity of cells by replacing water molecules and stabilizing cellular components. In the field of medicine, cryoprotectants are essential for the preservation of human tissues and organs for transplantation. For instance, when organs are harvested for transplantation, they need to be preserved in a viable state until they can be transplanted into a recipient. The use of cryoprotectants allows these organs to be stored at low temperatures, significantly extending their shelf life. This has made organ transplantation more feasible and has saved countless lives. Moreover, cryoprotectants are also widely used in reproductive technologies. In vitro fertilization (IVF) procedures often involve the freezing of embryos for later use. The application of cryoprotectants during the freezing process ensures that the embryos remain viable when thawed. This technology has provided many couples with the opportunity to conceive when they may not have been able to do so otherwise. In agriculture, cryoprotectants are utilized for the preservation of plant genetic material. Seeds and plant tissues can be frozen and stored for long periods, allowing for the conservation of genetic diversity. This is particularly important in the context of climate change and food security, as it enables researchers to safeguard valuable plant species and traits that may be lost due to environmental changes. Despite their numerous benefits, the use of cryoprotectants is not without challenges. Some cryoprotectants can be toxic to cells at high concentrations, necessitating careful optimization of their usage. Researchers continue to investigate new types of cryoprotectants that are less toxic and more effective in preserving biological materials. In conclusion, cryoprotectants are indispensable in the field of cryopreservation. They protect cells and tissues from damage during freezing, allowing for successful preservation and storage. Their applications span various fields, including medicine, reproductive technologies, and agriculture, highlighting their significance in modern science. As research continues to advance, the development of new and improved cryoprotectants will further enhance our ability to preserve biological materials, ultimately benefiting humanity as a whole.

冷冻保存是一种在生物学、医学和农业等多个领域中使用的重要技术。它涉及将细胞、组织甚至整个生物体冷却并储存于非常低的温度，以保持其生存能力和功能，以便未来使用。使冷冻保存成功的关键组成部分之一是被称为冷冻保护剂的物质，它在冷冻过程中保护生物材料方面发挥了至关重要的作用。在本文中，我们将探讨冷冻保护剂的重要性、它们的工作原理以及在不同领域的应用。 冷冻保护剂的主要功能是防止在冷冻过程中细胞和组织内形成冰晶。冰晶会对细胞结构造成重大损害，导致细胞死亡和功能丧失。通过使用冷冻保护剂，科学家可以降低细胞内水的冰点，从而减少冰晶形成的可能性。常见的冷冻保护剂包括甘油、二甲基亚砜（DMSO）和乙二醇。这些物质通过替代水分子并稳定细胞成分来帮助维持细胞的完整性。 在医学领域，冷冻保护剂对于人类组织和器官的保存至关重要，以便进行移植。例如，当器官被收集用于移植时，需要以可行的状态保存，直到它们可以移植给接受者。使用冷冻保护剂可以使这些器官在低温下储存，显著延长其保质期。这使得器官移植变得更加可行，挽救了无数生命。 此外，冷冻保护剂还广泛用于生殖技术中。体外受精（IVF）程序通常涉及胚胎的冷冻，以备后用。在冷冻过程中应用冷冻保护剂确保胚胎在解冻时保持活力。这项技术为许多夫妇提供了怀孕的机会，否则他们可能无法做到这一点。 在农业中，冷冻保护剂用于植物遗传材料的保存。种子和植物组织可以被冷冻并储存很长时间，从而保护遗传多样性。在气候变化和食品安全的背景下，这一点尤其重要，因为它使研究人员能够保护有价值的植物物种和特征，这些特征可能由于环境变化而丧失。 尽管有众多好处，使用冷冻保护剂并非没有挑战。一些冷冻保护剂在高浓度下可能对细胞具有毒性，因此需要仔细优化其使用。研究人员继续研究新的类型的冷冻保护剂，以使其在保存生物材料时更少毒性且更有效。 总之，冷冻保护剂在冷冻保存领域不可或缺。它们在冷冻过程中保护细胞和组织免受损伤，从而实现成功的保存和储存。它们的应用跨越医学、生殖技术和农业等多个领域，突显了它们在现代科学中的重要性。随着研究的不断进展，新型和改进的冷冻保护剂的发展将进一步增强我们保存生物材料的能力，最终造福整 humanity.