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Effects of Three Emerging Non-thermal Pretreatments on Drying Kinetics, Physicochemical Quality, and Microstructure of Garlic Slices

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Abstract

Three emerging non-thermal pretreatment methods, including cold plasma, ultrasound, and ozone water, were utilized to pretreat garlic slices before drying process. The garlic slices were then dried by hot air drying at 60 °C. The study investigated the drying kinetics, color, rehydration ratio (RR), allicin content (AC), total phenolic content (TPC), antioxidant activity, and microstructure of the garlic slices. The results showed that ultrasound and ozone water pretreatment can significantly enhance drying kinetics. In comparison to untreated samples, garlic slices pretreated with ultrasound for 20 min exhibited a 55.96% increase in moisture effective diffusivity (Deff). Garlic pretreated with ultrasound exhibited the best rehydration properties, yet it retained the lowest levels of allicin content and antioxidant activity. Encouragingly, samples treated with ozone water demonstrated the best nutritional quality properties, with approximately 7.85% higher AC, 25.90% higher TPC, and 12.31% higher antioxidant activity compared to untreated samples. The study also emphasizes notable alterations in the microstructure of garlic resulting from various pretreatments. This research provides valuable insights into optimizing garlic drying processes using emerging non-thermal pretreatment techniques, showcasing their potential for industrial applications and quality enhancement.

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Data will be made available on request.

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Funding

This research is supported by the Natural Science Foundation of Jiangsu Province (BK20230523) and the China Agriculture Research System of MOF and MARA (CARS26).

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Jun-Wen Bai designed the study, analyzed data, and revised the manuscript. Dan-Dan Li conducted the experiments, analyzed data, and wrote the manuscript draft. Joshua H. Aheto participated in analyzing the results and revising the manuscript. Zi-Yu Qi and Abulaiti Reziwanguli participated in data collection. Jian-Rong Cai and Xiao-Yu Tian provided funding, supervision, and revision. All authors reviewed the manuscript and approved the submitted version.

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Correspondence to Xiao-Yu Tian.

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Bai, JW., Li, DD., Aheto, J.H. et al. Effects of Three Emerging Non-thermal Pretreatments on Drying Kinetics, Physicochemical Quality, and Microstructure of Garlic Slices. Food Bioprocess Technol (2024). https://doi.org/10.1007/s11947-024-03399-9

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  • DOI: https://doi.org/10.1007/s11947-024-03399-9

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