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投稿时间:2021-03-25
投稿时间:2021-03-25
中文摘要: 为明确不同品种蓝莓果实品质和香气物质的差异,选择3种类型的20个品种的蓝莓为试材,对果实可溶性总糖、可滴定总酸、维生素C进行测定,计算糖酸比,并利用电子鼻系统对果实香气进行测定和评价。结果表明,在参试蓝莓品种间可溶性总糖、可滴定总酸、维生素C和糖酸比4个单一指标均达到极显著水平(P<0.01)。参试蓝莓品种香气物质的构成具有差异,发现“奥尼尔”品种香气物质构成与其他品种具有较大差异。主成分分析(principal component analysis,PCA)可以将“瑞卡”、“晚蓝”、“斯巴坦”、“喜来”、“伯克利”、“蓝鸟”、“蓝金”和“海岸”8 个品种区分开,线性判别分析(linear discriminant analysis,LDA)可以将“奥尼尔”、“布里吉塔”和“瑞卡”3个品种区分开,可以作为对PCA分析结果的补充,但PCA和LDA分析对于整体香气组分相似的品种区分效果不佳。W1W、W1S、W5S、W2W、W2S和W1C 6个传感器对区分香气物质的贡献率较大。
Abstract:In order to clarify the fruit quality and aroma substances in different cultivars of blueberry,the total soluble sugar,total titratable acid,and vitamin C,calculated the ratio of sugar to acid,and used electronic nose system to evaluate the fruit aroma of 20 blueberry cultivars in three types.The results showed that total soluble sugar,total titratable acid,vitamin C,and sugar-to-acid ratio were different among all the cultivars (P<0.01).The composition of aroma substances of blueberry varied among cultivars.In particular,the composition of aroma substances in “O'Neal”was significantly different from that of other cultivars.Principal component analysis(PCA)distinguished eight cultivars including “Reka”,“Lateblue”,“Spartan”,“Sierra”,“Berkeley”,“Bluejay”,“Bluegold”,and “Coastal”Linear discriminant analysis (LDA)distinguished three cultivars including“O'Neal”,“Brigitta”,and “Reka”,which could be used as a supplement to PCA.However,PCA and LDA were not obvious effect in distinguishing the cultivars with similar aroma substances.Six sensors(W1W,W1S,W5S,W2W,W2S,and W1C)contributed significantly to distinguishing the aroma substances.
文章编号:202206020 中图分类号: 文献标志码:
基金项目:财政部和农业农村部:国家现代农业产业技术体系资助(CARS-29);辽宁省重点实验室建设项目(2020JH13/10200051);辽宁省“一带一路”联合实验室项目(2020JH2/10500005);辽宁省农业科学院学科建设计划(2019DD164924)
Author Name | Affiliation |
WEI Xin,GUO Dan,WANG Hong-guang,LIU Cheng | Liaoning Institute of Pomology,Yingkou 115009,Liaoning,China |
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