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相关概念视频

Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

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Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
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Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

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Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
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The Nitrogen Cycle01:49

The Nitrogen Cycle

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Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
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Nitric Oxide Signaling Pathway01:28

Nitric Oxide Signaling Pathway

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Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...
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相关实验视频

Updated: May 9, 2025

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

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酸盐和酸盐食品成分数据库:一个更新和广泛的深度潜水数据库.

Liezhou Zhong1, Jonathan M Hodgson2, Joshua R Lewis3

  • 1Nutrition & Health Innovation Research Institute, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, Australia; Institute of Agriculture, The University of Western Australia, Perth, Western Australia, Australia.

The American journal of clinical nutrition
|May 3, 2025
PubMed
概括

这项研究创建了一个扩展的酸盐和酸盐的食品数据库,揭示了由食物类型,,季节和地理因素影响的显著变化. 这种工具有助于准确的健康影响评估.

关键词:
动物食品 动物食品通过饮食摄入的摄入量食品成分数据库 食品成分数据库亚酸盐酸盐的使用方法氧化氧化的使用方法亚酸盐的化物尼托胺是一种氨酸.植物食品 植物食品肉类加工品 肉类加工品保持因子是保持因子.

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科学领域:

  • 营养科学 营养科学
  • 食品化学 食品化学
  • 公共卫生 公共卫生

背景情况:

  • 饮食中酸盐和酸盐对健康的影响取决于食物来源.
  • 准确的饮食研究需要全面的,最新的食物成分数据.
  • 数据必须考虑来源,年份,季节和方法的变化.

研究的目的:

  • 更新和扩展现有的动物和植物性食品酸盐/酸盐数据库.
  • 研究,季节,地理和时间对酸盐/酸盐含量的影响.
  • 提供一个资源,以指导营养和临床研究酸盐/酸盐暴露和健康.

主要方法:

  • 编制了广泛的全球食品酸盐/酸盐数据,大大扩大了现有的数据库.
  • 分层并比较数据以确定各种方法的酸盐/酸盐保留因子.
  • 分析了食品中酸盐/酸盐含量的季节性,地理和纵向 (30年) 变化.
  • 开发了一个语言模型辅助的数据提取管道,以适应区域报告差异.

主要成果:

  • 创建了一个数据库,包含823种食品的15万多个值,比以前版本大五倍.
  • 植物食品中的量化酸盐含量 (≤12.27 mg/kg) 和煮熟 (55%) 和油炸 (280%) 植物食品的确定的保留因子.
  • 确定了植物酸盐的显著季节性变化以及植物和动物食品的地理差异.
  • 观察到30年来一些叶菜中酸盐的下降,动物食品的纵向变化较小.

结论:

  • 一个新的,全面的食品酸盐/酸盐数据库和计算器已经开发出来.
  • 这种资源可以在健康研究中更准确地估计饮食中酸盐/酸盐的暴露.
  • 有助于更好地了解饮食中酸盐和酸盐摄入对健康的影响.