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Food Chem

Title:		Assessment of fresh Alpinia galanga (A. galanga) drying techniques for the chemical composition of essential oil and its antioxidant and biological activity
Author(s):		Ge X; Liang Q; Long Y; Shen H; Zhang Q; Sun Z; Li W;
Address:		"College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China; Engineering Research Center of Grain and Oil Functionalized Processing, Universities of Shaanxi Province, 22 Xinong Road, Yangling 712100, Shaanxi, PR China. College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China; Engineering Research Center of Grain and Oil Functionalized Processing, Universities of Shaanxi Province, 22 Xinong Road, Yangling 712100, Shaanxi, PR China. Electronic address: liwenhao@nwsuaf.edu.cn"
Journal Title:		Food Chem
Year:		2022
Volume:		20220526
Issue:
Page Number:		133314 -
DOI:		10.1016/j.foodchem.2022.133314
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"This study evaluated drying characteristics, structure and essential oil chemical composition, and biological activity of A. galanga by hot air drying (HAD), vacuum drying (VD), freeze drying (FD). The results showed that HAD had the shortest drying time while FD could better maintain the microstructure and showed a higher essential oil yield than HAD and VD. In addition, E-nose, HS-GC-IMS and HS-SPME-GC-MS could effectively distinguish the essential oil chemical composition of the four samples because different drying methods induced the changes in the profile and content of the compounds. HS-SPME-GC-MS detected 43 compounds, of which alcohols, alkenes, and esters were the main substances in fresh and dry samples. In comparison, HS-SPME-GC-IMS detected 80 compounds, including alcohols, aldehydes, ketones, esters, alkenes. Overall, the FD samples showed more outstanding advantages by evaluating antioxidant properties and antibacterial activities. FD was more suitable for A. galanga drying as it maintains appearance and biological activity"
Keywords:		"Alcohols Alkenes *Alpinia/chemistry Antioxidants/chemistry Esters *Oils, Volatile/chemistry/pharmacology *Volatile Organic Compounds/chemistry A.galanga Biological activities Chemical composition Drying characteristics Drying method Essential oil;"
Notes:		"MedlineGe, Xiangzhen Liang, Qiuhong Long, Yao Shen, Huishan Zhang, Qian Sun, Zhuangzhuang Li, Wenhao eng England 2022/06/01 Food Chem. 2022 Oct 30; 392:133314. doi: 10.1016/j.foodchem.2022.133314. Epub 2022 May 26"