Pulp volatiles measured by an electronic nose are related to harvest season, TSS concentration and TSS/TA ratio among 39 peaches and nectarines
Pulp volatiles measured by an electronic nose are related to harvest season, TSS concentration and TSS/TA ratio among 39 peaches and nectarines
复制标题
电子鼻测得的39种桃子和油桃果肉挥发物与采收季节、TSS浓度和TSS/TA比值相关
DOI：
10.1016/j.scienta.2012.10.020
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发表时间：
2013-02-04
影响因子：
4.3
通讯作者：
Shen, Jiyuan
中科院分区：
文献类型：
--
作者：
Su, Mingshen;Zhang, Bo;Shen, Jiyuan
2010年6月5日至9月9日期间，39个桃子和油桃品种的果实在果园中达到商业成熟。39个品种的果肉总可溶性固形物（TSS）浓度在8.90% ~ 19.97%之间，可滴定酸度（TA）浓度在0.20% ~ 1.12%之间，TSS/TA比值在9.36 ~ 92.80之间。利用装有18个金属氧化物传感器的FOX 4000型电子鼻对39个品种收获时的果肉挥发物强度值进行了测定，其中13个传感器呈阳性，5个传感器呈阴性。通过对39个品种收获时果肉挥发物的电子鼻测定，在39个品种的判别因子分析（DFA）样地，可以区分出6、7、8、9月份收获的品种、低TSS浓度（16%）的品种和低TSS/TA比值（45）的品种。按收获季节、TSS浓度和TSS/TA比值分类，每个品种3个重复117份样品分为3个单独组。117个样品的DFA图比39个品种在收获时测定的果肉挥发物更清晰。(C) 2012 Elsevier B.V.版权所有
Fruit of 39 peach and nectarine cultivars were harvested at commercial maturity from an orchard between June 5 and September 9 in 2010. Total soluble solids (TSS) concentration ranged from 8.90% to 19.97%, titratable acidity (TA) concentration ranged from 0.20% to 1.12%, and TSS/TA ratio ranged from 9.36 to 92.80 in the tested pulp samples of 39 cultivars. Pulp volatiles of 39 cultivars at harvest were evaluated by a FOX 4000 electronic nose (e-nose) equipped with 18 metallic oxide sensors, which 13 sensors were positive and five sensors were negative in intensity values. Based on e-nose measurements of pulp volatiles of 39 cultivars at harvest, cultivars harvested in June, July, and both August and September could be differentiated, cultivars of low TSS concentration (16%), and cultivars of low TSS/TA ratio (45) in the discriminant factor analysis (DFA) plot of 39 cultivars. 117 samples of three replicates for each cultivar were separated into three individual groups according to the classifications of harvest season, TSS concentration and TSS/TA ratio, respectively. Clearer separations were reached in these DFA plots of separated 117 samples than that of 39 cultivars based on pulp volatiles at harvest measured by the e-nose. (C) 2012 Elsevier B.V. All rights reserved.