Ma+D-Waste Recovery Engineering, Edificio Joxe Mari Korta-Avda Tolosa 72, 20018 Donostia-San Sebastián, Spain.
Biorefinery Process Research Group Chemical and Environmental Engineering Department, University of the Basque Country (UPV/EHU), Plaza Europa, 1, 20018 Donostia-San Sebastian, Spain.
Molecules. 2021 Jun 22;26(13):3783. doi: 10.3390/molecules26133783.
In the present work, the optimization of the extraction of antioxidant compounds from apple pomace using ultrasound technology as an environmentally friendly and intensification process was developed. Different sonication powers, extraction temperatures and extraction times were studied and their influence on extraction yield and characteristics of the extracted samples (total phenolic compounds, flavonoid content and antioxidant capacity) are presented. The elaborated experimental design and the analysis of Pareto and response surface diagrams allowed us to determine the optimal extraction conditions. The conditions that allow the maximum extraction of phenolic compounds were found at 20 min, 90 °C and 50% ultrasound amplitude. Nevertheless, at these conditions, the antioxidant capacity measured by DPPH decreased in the extracted samples.
在本工作中，开发了利用超声技术作为环保强化工艺从苹果渣中提取抗氧化化合物的优化方法。研究了不同的超声功率、提取温度和提取时间，及其对提取产率和提取样品特性（总酚含量、类黄酮含量和抗氧化能力）的影响。详细的实验设计和 Pareto 及响应面图的分析允许我们确定最佳的提取条件。在 20 分钟、90°C 和 50%超声幅度的条件下，发现了允许最大程度提取酚类化合物的条件。然而，在这些条件下，用 DPPH 测量的提取样品的抗氧化能力降低。
