99精品国产在热久久无码,中文在线А天堂中文在线新版,和尚吮她的花蒂和奶水视频,乡下人产国偷V产偷V自拍

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:2145

    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(dá)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.

 

国内揄拍国内精品人妻试看| 亚洲人成亚洲人成在线观看| 锕锕锕锕锕锕~再深一点五种软件| 国产全肉乱妇杂乱视频| 97人妻天天摸天天爽天天| 亚洲国产一区二区A毛片| 亚洲日韩AV无码精品放毛片| 被黑人各种姿势猛烈进出到抽搐| 我与岳干柴烈火| 精品久久久无码中文字幕| 正面偷拍女厕36个美女嘘嘘| 少妇人妻一区二区三区视频| 麻豆妓女爽爽一区二区三| 女人被弄到高潮的免费视频| 天天做夜夜爱爽牛牛视频| 国产又粗又猛又爽又黄的a片小说| 无码少妇一区二区| 亚洲熟妇少妇任你躁在线观看无码| 精品国产一区二区三区四区VR| 国产成人久久精品激情| 免费国产黄网站在线观看视频| 狂性XXXX乱大交老女人| 国产精品刮毛| FREE紧VIDEOXX粗又长| 国产成人精品亚洲一区二区三区| 性久久久久久久| 一性一交一伦一片A片庆| 久久午夜伦鲁片免费无码| 亚洲欧美国产毛片在线| 久热国产精品视频一区二区三区| 花蜜花液汁水野战高H| 无码人妻精品一区二区三区66| 88国产精品欧美一区二区三区| 午夜精品一区二区三区免费视频| 波多野结衣52部合集在线观看 | 五月天人体艺术| 伊人久久综合热线大杳蕉岛国| 亚VA芒果乱码一二三四区别| 一二三四高清免费播放| 野花高清完整版免费观看视频电视 | 久久久久久久人妻无码中文字幕爆|