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Molecules

Title:		"Evaluation of Physiological Characteristics, Soluble Sugars, Organic Acids and Volatile Compounds in 'Orin' Apples (Malus domestica) at Different Ripening Stages"
Author(s):		Yang S; Meng Z; Li Y; Chen R; Yang Y; Zhao Z;
Address:		"College of Horticulture, Northwest Agricultural & Forestry University, Yangling 712100, China. Apple Engineering and Technology Research Center of Shaanxi Province, Yangling 712100, China"
Journal Title:		Molecules
Year:		2021
Volume:		20210204
Issue:		4
Page Number:		-
DOI:		10.3390/molecules26040807
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"'Orin' is a popular apple cultivar, which has a yellow-green appearance, pleasant taste, and unique aroma. However, few studies on the fruit quality characteristics of 'Orin' apples have been reported before. In this study, changes of the physiological characteristics were measured at different ripening stages, and the soluble sugars and organic acids were determined by high-performance liquid chromatography (HPLC). Volatile compounds were identified using the headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). During the fruit ripening, the 'Orin' apple fruit weight, size, and total soluble solid were gradually increased by contrast with the titratable acidity, and the firmness decreased. The content of four soluble sugars reached the maximum at the 180 days after full bloom (DAFB) stage. Malic acid was measured as the most abundant organic acid in 'Orin' apples. Ethyl butyrate, hexyl propanoate, hexyl acetate and butyl acetate belonging to esters with high odor activity values (OAVs) could be responsible for the typical aroma of 'Orin' apples. The aim of this work was to provide information on the flavor characteristics of 'Orin' apples and promote this apple cultivar for marketing and processing in the future"
Keywords:		Acids/*analysis Malus/*chemistry/*growth & development Solubility Sugars/*analysis/*chemistry Volatile Organic Compounds/*analysis Gc-ms Hplc OAVs Orin apple flavor characteristics fruit quality;
Notes:		"MedlineYang, Shunbo Meng, Zhipeng Li, Yanan Chen, Rongxin Yang, Yazhou Zhao, Zhengyang eng 31471845/National Natural Science Foundation of China/ CARS-27/Modern Agro-industry Technology Research System of China/ Switzerland 2021/02/10 Molecules. 2021 Feb 4; 26(4):807. doi: 10.3390/molecules26040807"