Ultrasound-Assisted Extraction Optimization and Cultivar Screening for Polyphenol Recovery from Thinned Peach Fruit: A Comprehensive Evaluation of 179 Cultivars
文献类型： 外文期刊
作者： Li, Shenge 1 ; Xu, Jianlan 1 ; Cai, Zhixiang 1 ; Guo, Shaolei 1 ; Yu, Mingliang 1 ; Shen, Zhijun 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Jiangsu Key Lab Hort Crop Genet Improvement, Inst Pomol, Nanjing 210014, Peoples R China
关键词： thinned peach; polyphenols; antioxidation; ultrasonic-assisted extraction; resources
期刊名称：FOODS （ 影响因子：5.1； 五年影响因子：5.6 ）
ISSN：
年卷期： 2025 年 14 卷 11 期
页码：
收录情况： SCI
摘要： Thinned peach fruit represents a substantial source of polyphenols, primarily due to its early developmental stage. Utilizing ultrasound-assisted extraction optimized through a Box-Behnken design, we determined the optimal extraction parameters to be 45 min, 360 W, a liquid-to-solid ratio of 15:1 mL/g, and a temperature of 70 degrees C. Under these conditions, the total phenolic content (TPC) achieved was 1.12 g GAE/kg FW, with an extraction efficiency of 97.06%. Additionally, an extensive evaluation of 179 peach cultivars revealed that wild accessions possessed significantly higher polyphenol content, including TPC, total flavonoid content (TFC), and total anthocyanin content (TAC), alongside enhanced antioxidant activities as measured by ferric reducing antioxidant power (FRAP), 2,2 '-Azino-di-3-ethylbenzthiazoline Sulfonic Acid (ABTS), and 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assays, in comparison to landraces and cultivated varieties. Notably, the wild accession 'Gansu Peach 2' exhibited the highest TPC (2.61 g GAE/kg FW), whereas the landrace 'Early White Blossom Peach' demonstrated the highest TFC (137.32 g RTE/kg FW), TAC (25.30 g PAE/kg FW), and antioxidant capacity. Additionally, as expected, significant positive correlations (0.73 < r < 0.96) were also observed between polyphenol components and antioxidant activities (p < 0.0001). This study establishes a foundational framework for the utilization of thinned peach fruit as valuable polyphenol-rich resources.
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