在酸面包面包中水溶性阿拉比诺基兰的结构和组成特征的变化
Jayani Kulathunga1,2, Kristin Whitney3, Senay Simsek1,3
1Department of Plant Sciences, North Dakota State University, Fargo, North Dakota 58102, United States.
Journal of agricultural and food chemistry
|August 30, 2024
概括
石磨和初始培养显著改变全谷物面粉和酸面粉中的水可提取的阿拉比诺基兰 (WE-AX). 将WE-AX加工成面包可以降低其分子量和结构复杂性.
科学领域:
- 食品科学与技术 食品科学与技术
- 营养生物化学 营养生物化学
- 分析化学 分析化学
背景情况:
- 可在水中提取的阿拉比诺基兰 (WE-AX) 是全谷物中关键的结构成分.
- 了解WE-AX在食品加工过程中的结构变化对于健康益处评估至关重要.
- 削方法和发酵方法显著影响多糖的结构.
研究的目的:
- 调查石材磨砂参数对WE-AX结构的影响.
- 为了确定小麦和麦初始培养对酸面包中的WE-AX的影响.
- 为了描述整个谷物面粉的酸面粉发酵过程中的WE-AX变化.
主要方法:
- 石磨全麦子生产六个不同的面粉样本.
- 使用小麦和麦初始作物生产酸面包面包.
- 详细的结构分析可在水中提取的阿拉比诺基兰 (WE-AX).
主要成果:
- 研磨参数和初始培养物显著影响WE-AX糖成分和阿拉比诺基兰 (AX) 含量.
- WE-AX的阿拉比诺斯与克西洛斯 (A/X) 比率受到加工条件的显著影响 (p < 0.05).
- 酸面粉面包生产导致了AX的显著分子降解,减少了分子量,增加了结构异质性.
结论:
- 削技术和初始培养在定义WE-AX细结构方面都起着至关重要的作用.
- 酵母面的发酵显著改变了AX结构,影响了它的特性.
- 这项研究为评估健康益处提供了对食品加工过程中WE-AX修改的宝贵见解.
相关概念视频
Hydrolysis
104.7K
Overview
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
104.7K
Effect of Sea Water on Concrete
200
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...
Concrete in areas between tide marks,...
200
Hydration of Cement
204
Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
204
Porosity in Cement Paste
118
The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is...
The balance of water to cement in the mix is...
118
Loss of Carboxy Group as CO2: Decarboxylation of Malonic Acid Derivatives
1.9K
Just like β-keto acids—which upon thermal decarboxylation form ketones—β-dicarboxylic acids undergo decarboxylation to generate monocarboxylic acids with the liberation of carbon dioxide.
1.9K
Substituent Effects on Acidity of Carboxylic Acids
6.6K
The acidity of carboxylic acids is influenced by the nature of the substituents bounded to the functional group. The acid strength is determined by the stability of the carboxylate anion—the conjugate base formed by dissociating the corresponding carboxylic acid.
6.6K


