概括
酸盐添加剂,如酸和酸盐,在老鼠中显示出显著的虫预防作用. 这些发现表明有机酸盐可能会恢复加工食品中失去的保护因子.
科学领域:
- 生物化学 生物化学
- 牙科研究 牙科研究
- 营养科学 营养科学
背景情况:
- 牙损仍然是一个重要的公共卫生问题.
- 饮食因素在脏病的发展中起着至关重要的作用.
- 特定饮食成分的潜在保护作用是正在进行的研究领域.
研究的目的:
- 进一步研究各种酸盐添加剂在动物模型中的虫预防作用.
- 探索有机酸盐与假设的虫保护因子之间的潜在联系.
主要方法:
- 用不同酸盐化合物补充的空性饮食养白鼠.
- 评估二酸,β-甘酸,酸和1,6-果糖二酸的抑制的疗效.
主要成果:
- 酸,β-糖酸,酸和1,6-果糖二酸显示出抑制的特性.
- 结果证实了这些特定酸盐添加剂的抗原潜力.
结论:
- 有机酸盐表现出显著的虫预防作用.
- 这种效应可能与糖精炼和谷物加工过程中可能丢失的保护因子有关.
相关概念视频
02:54Ions as Acids and Bases
Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
03:24Common Ion Effect
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
04:01Factors Affecting Solubility
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
01:19Ionic Strength: Effects on Chemical Equilibria
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary cation—the calcium...
In this solution, the primary cation—the calcium...
01:22Bicarbonate-Carbonic Acid Buffer
The carbonic acid-bicarbonate buffer system is critical for maintaining the body's pH balance. It operates on the equilibrium:
01:24Carbonation Shrinkage
Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction facilitates the...
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction facilitates the...