1. Kinetic Modelling of Moisture Transfer and Phytochemical Properties in Longan Seeds: Impact of Ultrasonic Pretreatment and Microwave Drying Process.
- Author
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Fikry, Mohammad, Jafari, Saeid, Shiekh, Khursheed Ahmad, Kijpatanasilp, Isaya, Chheng, Sochannet, and Assatarakul, Kitipong
- Subjects
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GIBBS' free energy , *MICROWAVE drying , *FOOD dehydration , *LONGAN , *FLAVONOIDS , *THERMODYNAMIC functions - Abstract
This study investigated the combination of ultrasound pretreatment with microwave drying in food production, focusing on its impact on longan seeds. The study explored how ultrasound pretreatment and different microwave power levels affect drying kinetics, thermodynamic characteristics, and phytochemical properties during extraction. The results indicated that ultrasound pretreatment significantly boosts the drying rate by an average of 25% and reduces drying time by an average of 41.3%, while enhancing the phytochemical content of longan seeds, with increases of up to 35% for total phenolic content (TPC), 47% for total flavonoid content (TFC), and 42% for DPPH radical scavenging activity. Mathematical models accurately described the drying process and extraction kinetics, with the modified Henderson and Pabis model and the two-term exponential model being particularly effective. Furthermore, the study observed changes in entropy, enthalpy, and Gibbs' energy with varying microwave power levels and ultrasound treatment. This research demonstrated the potential of ultrasound pretreatment combined with microwave drying to improve the efficiency and phytochemical quality of longan seeds in food processing applications. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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