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Food Res Int

Title:		"Characterization of ester odorants of apple juice by gas chromatography-olfactometry, quantitative measurements, odour threshold, aroma intensity and electronic nose"
Author(s):		Niu Y; Wang R; Xiao Z; Zhu J; Sun X; Wang P;
Address:		"School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China. School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, PR China. Electronic address: niuge211@sina.com"
Journal Title:		Food Res Int
Year:		2019
Volume:		20190213
Issue:
Page Number:		92 - 101
DOI:		10.1016/j.foodres.2019.01.064
ISSN/ISBN:		1873-7145 (Electronic) 0963-9969 (Linking)
Abstract:		"In this study, twenty ester compounds of juiced apples from three different varieties were identified and quantified by gas chromatography-olfactometry (GC-O) and gas chromatography-mass spectrometry (GC-MS) analysis. Six esters were selected as the key odour-active compounds by omission Tests. Perceptual interaction among esters was investigated through odour thresholds and intensity of six esters and fifteen binary mixtures. Most of these mixtures followed an addition behavior. Ethyl butanoate and butyl acetate had a synergistic effect. Sensory analysis revealed that fruity, sour and green notes were enhanced significantly by adding the binary mixture of ethyl butanoate and butyl acetate (E&B). Electronic nose (e-nose) data showed that, compared with the individual ester, the response values of E&B were increased on four sensors. Moreover, with regard to partial least squares regression (PLSR), fruity, sour and green notes attribute covaried well with five sensors of e-nose. The present study would provide a theoretical basis for understanding the aroma characteristic of apple juice, hoping to be helpful for the improvement of apple juice aroma and flavour"
Keywords:		Acetates Adult Electronic Nose Esters/*analysis Female *Food Handling Fruit/*chemistry Fruit and Vegetable Juices/*analysis Gas Chromatography-Mass Spectrometry/methods Humans Least-Squares Analysis Male Malus/*chemistry Odorants/*analysis Olfactometry Se;
Notes:		"MedlineNiu, Yunwei Wang, Ruolin Xiao, Zuobing Zhu, Jiancai Sun, Xiaoxin Wang, Pinpin eng Research Support, Non-U.S. Gov't Canada 2019/04/20 Food Res Int. 2019 Jun; 120:92-101. doi: 10.1016/j.foodres.2019.01.064. Epub 2019 Feb 13"