利用电子鼻评价桃果实香气
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江苏省农业科学院果树研究所 / 江苏省高效园艺作物遗传改良重点实验室,南京 210014

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农业农村部物种保护项目( 19190156);国家科技资源共享服务平台项目( NHGRC2020-NH16)


Evaluation of Aroma in Peach Fruit by Electronic Nose
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Institute of Pomology, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing 210014

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Species Conservation Project of Ministry of Agriculture and Rural Affair (19190156), National Crop Germplasm Resources Infrastructure in China (NHGRC2020-NH16)

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    摘要:

    为了明确不同桃品种资源果实香气差异,对桃果实香气评价和品质改良提供参考,本研究利用电子鼻系统对桃品 种资源果实整果香气进行测定和区分。通过 PEN 3.5 电子鼻系统采集 74 份不同品种资源桃果实芳香成分并得到了不同传感 器的响应值,采用主成分( PCA)、线性判别法( LDA)和负荷加载( LO)方法分析数据。 LO 分析结果显示,硫化氢( W1W)、 氮氧化物类( W5S)、甲烷类( W1S)、芳香成分与有机硫化物( W2W)传感器对供试桃果实香气的评价起主要作用;结合 PCA 和区分度值表明白花水蜜、脆保、春冠、奉罐 1 号、菊黄和红肉桃 1 号与其他供试品种资源的香气区别较大; LDA 可将不同果 实生育期桃较好区分,长、中、短不同果实生育期桃甲烷类和芳香成分与有机硫化物传感器响应值差异显著( P<0.05); LDA 可将硬肉类型(肉质绵)与其他 4 种肉质类型桃(不溶质、硬溶质、软溶质和硬质)区分开,且硬肉类型与其他 4 种肉质类型桃 甲烷类传感器响应值差异显著( P<0.05); LDA 无法区分不同肉色的桃,且各传感器响应值差异不显著。结果表明,生育期长 短对桃果实香气有明显影响;硬肉类型桃香气较独特;不同肉色桃香气接近。

    Abstract:

    In order to provide reference for peach fruit evaluation and quality improvement, the aroma components were evaluated using the electronic nose system PEN 3.5 in the fruit of 74 peach varieties. The response values from different sensors were recorded, followed by the analysis of PCA, LDA and LO. LO analysis results showed that four sensors W1W( hydrogen sulfide), W1S( methane compounds), W5S( nitrogen oxides) and W2W( aromatic components and organic sulfides) played a major role in the evaluation of the aroma of the tested peach fruit. PCA results and discrimination values indicated that the aromas of six varieties BaihuaShuimi, Cuibao, Springcrest, Fengguan 1, Ju Huang and Hongroutao 1 were observed with obvious differences with those of other tested varieties. LDA results were differing in peaches with different fruit development periods, i.e., the methane compounds, aromatic components and organic sulfides were significantly different( P<0.05) . With the LDA results, the peaches with flesh texture wooliness( soft) were identified with significant difference( P<0.05) from the other four flesh types( non-melting, hard melting, soft melting, and stony hard) . However, LDA was not applied to discriminate flesh colors. The results indicated that: 1) the period of fruit development represented a significant effect on the aroma of peach fruit, 2) peaches with wooliness flesh texture have unique aromas, and 3) the aromas from peaches with different flesh colors are detected without a significant difference.

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严娟,蔡志翔,张明昊,等.利用电子鼻评价桃果实香气[J].植物遗传资源学报,2021,22(1):274-282.

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  • 收稿日期:2020-06-16
  • 最后修改日期:2020-07-01
  • 录用日期:2020-07-21
  • 在线发布日期: 2021-01-07
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