使用中央复合设计优化冷咖啡及其与热咖啡相比的性能
Nur Hadiyani Zakaria1, Kanyawee Whanmek1, Sirinapa Thangsiri1
1Institute of Nutrition, Mahidol University, Salaya, Phuttamonthon, Nakhon Pathom 73170, Thailand.
Foods (Basel, Switzerland)
|June 28, 2023
概括
冷咖啡 (CBC) 具有独特的特点. 优化造条件产生较高的咖啡因和风味化合物比热造咖啡,即使在类似的总溶解固体 (TDS).
科学领域:
- 食品科学 食品科学 食品科学
- 饮料化学 饮料化学
- 感官分析 感官分析
背景情况:
- 冷咖啡 (CBC) 的全球流行度正在上升,但科学文献仍然有限,特别是与热咖啡相比,其对健康的益处.
- 现有的研究往往侧重于绿色咖啡豆或热水提取方法,使得CBC的特性未被充分探索.
研究的目的:
- 为了研究造条件如何影响冷咖啡的物理化学特性.
- 通过响应表面方法来优化冷咖啡造参数.
- 为了比较由此产生的冷咖啡与使用法式压方法造的咖啡.
主要方法:
- 采用中央复合设计的响应表面方法,评估造变量 (水温,咖啡与水的比率 (C2WR),咖啡网状尺寸,提取时间) 对总溶解固体 (TDS) 的影响.
- 分析了物理化学性质,抗氧化活性,挥发性化合物和有机酸,并将冷咖啡与法式咖啡进行了比较.
- 为冷咖啡确定了优化造条件.
主要成果:
- 水温,C2WR和咖啡网格大小显著影响了冷咖啡的TDS.
- 优化造参数被确定为4°C的水温,1:14C2WR,0.71毫米的咖啡网状尺寸和24小时的提取时间.
- 在可比的TDS水平下,冷咖啡的咖啡含咖啡因,挥发性化合物和有机酸比法式咖啡更高.
结论:
- 冷咖啡与类似的TDS水平的热咖啡有许多共同特征.
- 关键的区别包括冷咖啡中较高的咖啡因和与感官相关的化合物含量.
- 开发的TDS预测模型可以帮助食品行业优化冷咖啡生产,以达到所需的特性.
更多相关视频
09:23Methodology to Test Control Agents and Insecticides Against the Coffee Berry Borer Hypothenemus hampei
Published on: March 23, 2022
2.0K
05:55High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize Zea mays L.
Published on: June 16, 2018
7.0K
相关概念视频
Experimental Designs
11.6K
An experimental design is a systematic process that allows researchers to evaluate the relationship between dependent and independent variables. There are three widely used types of experimental design - pre-experimental design, true experimental design, and quasi-experimental design. In pre-experimental design, the researcher compares the data before and after some interventions or treatments. The true-experimental design has more than one purposefully created group, a commonly measured...
11.6K
Factorial Design
13.1K
Factorial Analysis is an experimental design that applies Analysis of Variance (ANOVA) statistical procedures to examine a change in a dependent variable due to more than one independent variable, also known as factors. Changes in worker productivity can be reasoned, for example, to be influenced by salary and other conditions, such as skill level. One way to test this hypothesis is by categorizing salary into three levels (low, moderate, and high) and skills sets into two levels (entry level...
13.1K
Design Example: Managing Concrete Workability
102
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
102
Effect of Temperature Change on Reaction Rate
4.2K
The Arrhenius equation,
4.2K
Optimizing Chromatographic Separations
440
Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
440
Factors Affecting Workability
94
The workability of concrete is a critical characteristic that influences the ease of mixing, handling, and finishing the concrete. It is affected by several factors including water content, aggregate properties, and admixtures like air entrainment. Water plays a fundamental role as it lubricates the concrete mix, facilitating easier movement and placement. However, the water requirement varies depending on the texture and shape of aggregates. Finer particles and angular, rough-textured...
94
