相关实验视频
Updated: Jul 20, 2025
09:31
Calcium Carbonate Formation in the Presence of Biopolymeric Additives
Published on: May 14, 2019
16.8K
使用二碳酸来提高低酸盐银鱼的保持水的能力,凝和风病学特征
Chun Xie1, Bei-Bei Shi1, Guang-Hui Liu1
1School of Pharmacy, Shangqiu Medical College, Shangqiu 476100, China.
Molecules (Basel, Switzerland)
|July 29, 2023
概括
二碳酸盐 (PBC) 部分取代三聚酸盐 (STPP) 在白银鱼中,改善了凝特性和保持水分的能力. 这是通过增加pH值和改变蛋白质结构来实现的,尽管过多的PBC会使产品变黑.
科学领域:
- 食品科学 食品科学 食品科学
- 蛋白质化学 蛋白质化学
- 肉类技术 肉类技术
背景情况:
- 三聚酸盐 (STPP) 由于其功能性质,通常用于surimi加工.
- 由于健康和环境问题,人们对减少加工食品中的酸盐含量越来越感兴趣.
- 二碳酸盐 (PBC) 在减少酸盐配方中被探索为STPP的潜在替代品.
研究的目的:
- 研究在减少酸盐的银鱼中部分或完全用PBC取代STPP的影响.
- 评估PBC对器的物理化学,凝,质和蛋白质构造性质的影响.
主要方法:
- 银色鱼的鱼被准备了不同比例的PBC和STPP.
- 分析的关键参数包括pH值,白度,水容量,油容量,凝性质,质性质 (G') 和蛋白质构成 (β-sheet和β-turns).
主要成果:
- 将STPP部分替换为PBC显著增加了pH值,产量,水和油容量以及纹理特性.
- 增加的PBC导致了更高的pH值和增强的离子强度,促进了β-sheet和β-turn蛋白质结构的形成.
- 较高的PBC水平产生了二氧化碳,这最初改善了,但随后降解了凝结构,影响了水容量和质地.
结论:
- 在银色鱼中,将STPP部分替换为PBC,可以提高凝特性和保持水分的能力.
- 这些好处归因于增加的pH值和改变的蛋白质构造和质性质.
- 优化PBC水平至关重要,以避免产品变黑和凝结构退化等负面影响.
相关概念视频
04:01Factors Affecting Solubility
33.5K
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:
33.5K
01:22Bicarbonate-Carbonic Acid Buffer
1.6K
The carbonic acid-bicarbonate buffer system is critical for maintaining the body's pH balance. It operates on the equilibrium:
1.6K
01:19Ionic Strength: Effects on Chemical Equilibria
1.5K
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...
In this solution, the primary...
1.5K
00:53Extraction: Effects of pH
535
Consider a neutral form of an amine, B, with a partition coefficient, K, in a liquid mixture containing organic and aqueous phases. The pH of the aqueous phase affects the charge on acidic and basic solutes, and the charged form is usually more soluble in the aqueous phase. Suppose the conjugate acid form of the amine is soluble only in the aqueous phase while the base form is soluble in both phases. Then the distribution coefficient, D, can be given as the ratio of amine concentration in the...
535
01:18Titration of Polyprotic Base with a Strong Acid
830
The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...
830
01:09Colloidal precipitates
622
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
622