lignin

简明释义

英[ˈlɪɡnɪn]美[ˈlɪɡnɪn]

n. [木] 木质素

英英释义

单词用法

同义词

反义词

例句

1.The spherical lignin beads were prepared by applying reverse-phase suspension polymerization technique with sulphate lignin as raw material.

以硫酸盐木质素为原料，利用反相悬浮技术制备出球形木质素吸附剂。

2.Alkali lignin is an abundant, cheap and renewable resource.

碱木素是一种来源丰富、价格低廉的可再生资源。

3.Trees containing less lignin and more cellulose would both grow faster and also produce more ethanol.

含低木质素高钎维的树木能够在既速长的同时又多产乙醇。

4.The heat and chemicals inside the digester causes the lignin to dissolve without breaking down the wood fibers.

热和化学品的内部消化木质素的原因解散而破了木材的纤维。

5.Black liquor also contains lignin from the trees.

黑液木质素还载有从树上。

6.Cellulose and hemicellulose could be used to produce fuel alcohol. However, lignin is often regarded as uselessness.

纤维素、半纤维素可用来生产燃料酒精，而木质素往往被废弃。

7.Besides cellulose, there are hemicellulose and lignin.

除了纤维素，还有半纤维素和木质素。

8.The plant cell walls are primarily composed of cellulose and lignin.

植物细胞壁主要由纤维素和木质素组成。

9.Researchers are studying the role of lignin in enhancing wood durability.

研究人员正在研究木质素在增强木材耐久性方面的作用。

10.In the paper industry, lignin is often removed to produce high-quality pulp.

在造纸工业中，木质素通常被去除以生产高质量的浆料。

11.Some biofuels are derived from the breakdown of lignin in plant biomass.

一些生物燃料是通过植物生物质中木质素的分解得来的。

12.The presence of lignin in the plant structure contributes to its rigidity.

木质素在植物结构中的存在使其更加坚硬。

作文

Lignin is a complex organic polymer found in the cell walls of many plants, making it one of the most abundant natural polymers on Earth. It is primarily responsible for the rigidity and strength of plant tissues, especially in woody plants. This remarkable substance plays a crucial role in the plant's ability to withstand various environmental stresses, including mechanical forces and pathogens. The structure of lignin is highly intricate, consisting of phenolic compounds that provide both structural support and protection to the plant cells. Without lignin, plants would not be able to grow tall or develop the robust structures necessary for survival in diverse habitats. In addition to its structural functions, lignin also contributes to the plant's resistance to decay and herbivory. Its complex chemical composition makes it difficult for many microorganisms and insects to break down plant material, thus serving as a natural defense mechanism. This characteristic is particularly important in ecosystems where plants face constant threats from pests and diseases. The importance of lignin extends beyond its role in the plant kingdom; it has significant implications for various industries, particularly in biofuels and paper production. In the paper industry, for example, lignin is often removed during the pulping process to produce cellulose fibers, which are essential for making paper. However, the removal of lignin can lead to the loss of valuable properties, such as the paper's strength and durability. As a result, researchers have been exploring ways to utilize lignin more effectively, either by finding methods to retain it in the paper-making process or by developing new products from lignin itself. In the context of renewable energy, lignin has gained attention as a potential source of biofuel. Its high carbon content makes it an attractive candidate for conversion into bioethanol and other biofuels. By harnessing the energy stored in lignin, we could reduce our reliance on fossil fuels and promote sustainable energy practices. This shift towards utilizing lignin for energy production could help mitigate climate change by lowering greenhouse gas emissions associated with traditional energy sources. Furthermore, the study of lignin is crucial in the field of biotechnology. Scientists are investigating the genetic and biochemical pathways involved in lignin biosynthesis to develop crops with modified lignin content. Such advancements could lead to improved agricultural practices, enhanced biomass yield, and better feedstock for biofuel production. In conclusion, lignin is not just a mere component of plant structure; it is a multifunctional polymer that plays vital roles in plant biology, industrial applications, and environmental sustainability. Understanding the properties and functions of lignin opens up numerous possibilities for innovation in various fields. As research continues to unfold, the potential uses of lignin will likely expand, highlighting its significance in both ecological and economic contexts.

木质素是一种复杂的有机聚合物，存在于许多植物的细胞壁中，使其成为地球上最丰富的天然聚合物之一。它主要负责植物组织的刚性和强度，尤其是在木本植物中。这种非凡的物质在植物抵御各种环境压力（包括机械力和病原体）的能力中起着至关重要的作用。木质素的结构非常复杂，由酚类化合物组成，为植物细胞提供结构支持和保护。没有木质素，植物将无法长高或发展出在多样栖息地中生存所需的坚固结构。 除了其结构功能外，木质素还促进植物抵抗腐烂和食草动物的侵害。其复杂的化学成分使许多微生物和昆虫难以分解植物材料，从而作为一种自然防御机制。这一特性在植物面临持续威胁的生态系统中尤为重要。 木质素的重要性超越了植物王国；它对多个行业具有重大影响，特别是在生物燃料和造纸生产中。例如，在造纸工业中，木质素通常在制浆过程中被去除，以生产纤维素纤维，这对于制造纸张至关重要。然而，去除木质素可能导致有价值特性的损失，例如纸张的强度和耐久性。因此，研究人员一直在探索更有效地利用木质素的方法，无论是通过寻找在造纸过程中保留木质素的方法，还是开发新的木质素产品。 在可再生能源的背景下，木质素因其作为潜在生物燃料来源而受到关注。其高碳含量使其成为转化为生物乙醇和其他生物燃料的有吸引力的候选者。通过利用木质素中储存的能量，我们可以减少对化石燃料的依赖，促进可持续能源实践。这种利用木质素进行能源生产的转变可能有助于减缓气候变化，通过降低与传统能源来源相关的温室气体排放。 此外，木质素的研究在生物技术领域至关重要。科学家们正在研究参与木质素生物合成的遗传和生化途径，以开发具有改良木质素含量的作物。这些进展可能会导致农业实践的改善、增强的生物量产量以及更好的生物燃料生产原料。 总之，木质素不仅仅是植物结构的一个组成部分；它是一种多功能聚合物，在植物生物学、工业应用和环境可持续性中发挥着重要作用。理解木质素的性质和功能为各个领域的创新开辟了无数可能性。随着研究的不断展开，木质素的潜在用途可能会扩大，突显其在生态和经济背景中的重要性。