久婷婷,日草夜草在线视频,91大神一二区,男人j操女人b的网站

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:2514

    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.

 

99视频国产精品免费观看| 人妻少妇久久久久久97人妻| 精品一区二区三区免费视频| 最近中文2019字幕第二页| 安丘市| 国产自拍在线观看| 性高爱久久久久久久久| av性色| 性欧美videosex高清少妇| 亚洲精品国产精品99久久| 欧洲无乱码一二三区| 老熟女网站| 亚洲免费电影| 久久久久免费精品国产,按| 亚洲AV无码第一区二区三区| 欧美精品一区二区三区在线| 无码中文人妻在线一区| 国产精品欧美久久久久无广告| 亚洲AV无码成人精品区在线观看| 丝袜高潮流白浆潮喷在线播放| 亚洲人成网站在线播放2019| 人妻中文字系列无码专区 | 让少妇高潮无乱码高清在线观看| 免费看黄a级毛片| 国产性色ΑV视频免费| 国产成人亚洲综合图区| 熟妇无码乱子成人精品| 国产亚洲精品a在线看 | 国产一级片网站| 欧美三级在线看| pornodorme另类重囗| 女人性做爰免费网站| 亚洲mv免费网址在线| 成人女同av在线观看| 亚洲精华液一区二区三区| 色老头xxxx性开放| 国产人妻15p| 国产香蕉| 龙里县| 2021亚洲va在线va天堂va国产 | 欧美精品与人动性物交免费看|