Effect of radio frequency combined oven pretreatment on the drying characteristics and quality of sweet potatoes
文献类型： 外文期刊
作者： Jiao, Qingqing 1 ; Guan, Xiangyu 2 ; Xu, Juanjuan 3 ; Liu, Li 4 ; Li, Rui 4 ; Yan, Yinfa 1 ; Wang, Shaojin 4 ;
作者机构： 1.Shandong Agr Univ, Coll Mech & Elect Engn, Tai An 271018, Shandong, Peoples R China
2.Shandong Agr Univ, Coll Food Sci & Engn, Tai An 271018, Shandong, Peoples R China
3.Shaanxi Univ Sci & Technol, Coll Mech & Elect Engn, Xian 710021, Shaanxi, Peoples R China
4.Northwest A&F Univ, Coll Mech & Elect Engn, Yangling 712100, Shaanxi, Peoples R China
5.Washington State Univ, Dept Biol Syst Engn, 213 LJ Smith Hall, Pullman, WA 99164 USA
6.Xinjiang Acad Agr Sci, Inst Agroprod Storage & Proc, Urumqi 830091, Peoples R China
关键词： Sweet potato; Drying characteristics; Radio frequency heating; Quality
期刊名称：INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES （ 影响因子：6.8； 五年影响因子：7.6 ）
ISSN： 1466-8564
年卷期： 2025 年 100 卷
页码：
收录情况： SCI
摘要： Dried sweet potato products with a soft texture and sweet flavor are very popular among consumers. Compared with the raw material, preserved sweet potato after pre-cooking has more benefits for the human body. Radio frequency combined with oven (RF-O) baking has been considered as an efficient method of cooking sweet potatoes that takes short time and maintains good product quality. To investigate the potential of RF-O cooking as a pretreatment method before drying sweet potatoes, the impact of RF-O cooking on the characteristics of hot air drying, hot air assisted RF drying, and RF combined with hot air drying was explored. After RF-O pretreatment, the trends of hot air assisted RF drying were similar to those of RF combined with hot air drying for samples. Compared to the hot air drying (210 min), hot air assisted RF drying (180 min) and RF combined hot air drying (200 min) showed a small advantage in drying time. All three drying treatments could provide high quality potatoes with similar color (Delta E values of 9.81-11.12), texture (hardness values of 2360.67-3345.07 gf) and soluble solid content (20.72 % - 21.81 %). Therefore, RF-O cooking could be used as a short pretreatment for sweet potatoes before drying by providing guidance for the drying process in the food industry.
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