摘要
通过采用电子鼻系统对不同品种资源和成熟度的甜瓜进行分析测定,建立一个科学的准确判别甜瓜的成熟度和区分不同品种甜瓜的方法。通过主成分分析(PCA)和线性判别式分析(LDA)表明,采用电子鼻可以很好区分半熟期和完熟期的甜瓜。当采用PCA方法分析时,电子鼻可以100%地区分和判定不同成熟度的甜瓜。对不同品种甜瓜进行电子鼻检测的研究表明,电子鼻可以区分不同品种的甜瓜,区分力值很高。样品在切开和不切开状态下气味有所变化,导致各品种之间的区分力有所改变。对于某些在不切开状态下香气非常接近,难以区分的样品,可以考虑通过切开的方式对样品进行分析。通过此研究建立了一种快速准确的判读不同品种甜瓜的成熟度,改变以往仅通过人为的主观判断方式。
In this work,an electronic nose was used to evaluate the different cultivars and mature stages of melons.When the maturity was distinguished according to color,the score plot of the principal component analysis （PCA） and linear discrimination analysis （LDA） for the electronic nose measurement showed that immature melons could be distinguished from mature melons.The PCA can be used to classify and identify 100% of melon maturity.Meanwhile,the electronic nose was used to distinguish the different cultivars of melons and showed high levels of classification.There were slightly flavor changes of cut and no cut samples,so it was easy to distinguish some of cultivars when the samples were cut using the electronic nose for some melon cultivars.By this research,the author built a rapid and accurate method to judge the maturity of melons instead of man sense.
出处
《中国农学通报》
CSCD
北大核心
2010年第21期75-80,共6页
Chinese Agricultural Science Bulletin
关键词
甜瓜
成熟度
风味
电子鼻
melon
maturity
flavour
electronic nose
