久久精品AⅤ无码中文字字,在线精品国产一区二区三区,欧美xxxx精品另类,性少妇FREESEXVIDEOS高清

網(wǎng)站首頁技術(shù)中心 > 利用多光譜成像系統(tǒng)區(qū)分杭白菊栽培種和測定木犀草素含量
產(chǎn)品中心

Product center

利用多光譜成像系統(tǒng)區(qū)分杭白菊栽培種和測定木犀草素含量

更新時間:2018-06-12 點擊量:2911

    杭白菊是重要的可食用中藥,因其主要活性成份為木犀草素,其具有自由基清除和抗氧化性能,可改善健康。研究人員利用多光譜成像法進行了杭白菊栽培種區(qū)分和木犀草素含量測定的研究。支持向量機法( (LS-SVM))用來區(qū)分杭白菊栽培種。從樣品獲得的光譜學(xué)和形態(tài)學(xué)特征數(shù)據(jù)用做前三個主要成份(99.61%), LS-SVM模型在預(yù)測集的區(qū)分精度可達98%。另外,偏小二乘法PLS和 LS-SVM 用于預(yù)測木犀草素含量,預(yù)測結(jié)果Rp分別為 0.949和0.965; RMSEP 分別為0.387和0.314 mg g−1。所有結(jié)果顯示,將MSI多光譜成像技術(shù)與化學(xué)計量法結(jié)合的方法,可能是一種快速、無損區(qū)分杭白菊栽培種和測定木犀草素含量的有效方法。該文章利用了VideometerLab 多光譜測量系統(tǒng)進行了研究。
   
Chrysanthemum morifolium Ramat. (Chr) is a notable medicinal and edible crop that stimulates health owing to its radical-scavenging and antioxidant properties due to its main active flavonoid luteolin. The performance of discriminating between Chr c*rs and determining luteolin content in Chr using multispectral imaging (MSI) was investigated. A combination of MSI with principal component analysis (PCA) and least squares-support vector machines (LS-SVM) was applied to classify Chr c*rs. PCA derived from the spectral and morphological features data of the samples explained 99.61% for summing up the first three principal components and the LS-SVM model achieved 98% discrimination accuracy in the prediction set. Additionally, partial least squares (PLS) and LS-SVM models were obtained to predict performance for luteolin content determination, with Rp of 0.949 and 0.965, and RMSEP of 0.387 and 0.314 mg g−1, respectively. All results demonstrated that the combination of MSI system with chemometrics methods could be a rapid and non-destructive method to discriminate between Chr c*rs and determine luteolin content in Chr.

 

久久99亚洲网美利坚合众国| 午夜dj在线观看免费视频| 国产精品无码DVD在线观看| 天天躁日日躁狠狠躁人妻| 日本精品无码特级毛片| 精品久久人妻av中文字幕| 国内熟女精品熟女a片视频| 成 人 网 站94免费观看| 亚洲精品国产精品国自产观看| 亚洲av中文无码乱人伦在线视色| 亚洲精品无码一区二区卧室| 欧美性videos高清精品| 西西最大胆日本无码视频| 国产精品麻豆va在线播放| 99国产精品久久久久久久日本竹| 人妻好久没做被粗大迎合| 99久久夜色精品国产亚洲av卜 | 亚洲综合AV一区二区三区不卡| 国产小呦泬泬99精品| 日产精品二线三线区| 日本一区二区三区免费视频| 一本一道精品欧美中文字幕| 国产熟女一区二区三区四区五区| 金瓶梅1-5电影免费观看在线| 久久无码人妻丰满熟妇区毛片| 日日狠狠久久8888偷偷色| 国产无遮挡又黄又爽在线视频| 东北妇女精品bbwbbw| heyzo无码综合国产精品| 鬼父在线视频观看| 99久久久精品免费观看国产| 私密浏览器看片免费下载视频 | 狠狠夜色午夜久久综合热| 黑人粗进欧美白妞在线直播| 国产精品久久久久一区二区三区| 欧美人伦禁忌DVD放荡欲情 | 毛片免费视频在线观看| 欧美xxxx18性欧美| 中文字幕人妻中文av不卡专区| 国产三级精品三级在线专区| 国产激情久久久久久熟女老人|