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Molecules

Title:		Volatile Compounds in Fruit Peels as Novel Biomarkers for the Identification of Four Citrus Species
Author(s):		Zhang H; Wen H; Chen J; Peng Z; Shi M; Chen M; Yuan Z; Liu Y; Zhang H; Xu J;
Address:		"Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China"
Journal Title:		Molecules
Year:		2019
Volume:		20191212
Issue:		24
Page Number:		-
DOI:		10.3390/molecules24244550
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"The aroma quality of citrus fruit is determined by volatile compounds, which bring about different notes to allow discrimination among different citrus species. However, the volatiles with various aromatic traits specific to different citrus species have not been identified. In this study, volatile profiles in the fruit peels of four citrus species collected from our previous studies were subjected to various analyses to mine volatile biomarkers. Principal component analysis results indicated that different citrus species could almost completely be separated. Thirty volatiles were identified as potential biomarkers in discriminating loose-skin mandarin, sweet orange, pomelo, and lemon, while 17 were identified as effective biomarkers in discriminating clementine mandarins from the other loose-skin mandarins and sweet oranges. Finally, 30 citrus germplasms were used to verify the classification based on beta-elemene, valencene, nootkatone, and limettin as biomarkers. The accuracy values were 90.0%, 96.7%, 96.7%, and 100%, respectively. This research may provide a novel and effective alternative approach to identifying citrus genetic resources"
Keywords:		Citrus/*chemistry Coumarins/analysis Fruit/*chemistry Polycyclic Sesquiterpenes/analysis Sesquiterpenes/analysis Volatile Organic Compounds/*analysis biomarkers citrus volatiles;
Notes:		"MedlineZhang, Haipeng Wen, Huan Chen, Jiajing Peng, Zhaoxin Shi, Meiyan Chen, Mengjun Yuan, Ziyu Liu, Yuan Zhang, Hongyan Xu, Juan eng 2018YFD1000200/National Key Research and Development Program/ 31272122/National Natural Science Foundation of China/ Switzerland 2019/12/18 Molecules. 2019 Dec 12; 24(24):4550. doi: 10.3390/molecules24244550"