欧美人与善交大片免费看,洗衣屋樱花未增删带翻译樱花,天天摸夜夜摸摸到高潮,亚洲欧洲VAT

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:1813

    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.

 

五十路レンタのおばさん| 国产一区二区三区AV精品| 国产精品无码免费专区午夜| 中文无码熟妇人妻AV| 一边吃奶一边哭乱抻又乱扭| 免费无码又爽又刺激软件下载直播| 欧美三日本三级少妇三级久久| 成年美女黄网站色大免费视频| 久久精品夜夜夜夜夜久久| 扒开她粉嫩的小缝尿进去H漫画| 亚洲国产一二三精品无码| 久久精品中文无码资源站| 国产免费无码一区二区三区| 久久亚洲AV成人无码国产电影| 国产男女无遮挡猛进猛出| 男人狂桶女人高潮完整过程| CAOPORN成人免费公开| 无码粉嫩小泬无套在线观看A片| 高H粗口调教羞辱SM文女王| 装醉把自己给流浪汉玩| 青春草无码精品视频在线观看| 97午夜理论片在线影院| 把女人弄爽特黄A大片视频| 正在播放老肥熟妇露脸| 麻豆国产AV丝袜白领传媒| 张栢芝被柔到高潮下不了床| 亚洲乱妇亚洲乱妇XINGLU| 两个女人互添下身高潮| 露小内裤奶头白丝JK水手维特| 精品2022露脸国产偷人在视频| 久久综合香蕉国产蜜臀AV| 少妇白浆高潮无码免费区| 狠狠色噜噜色狠狠狠综合久久| 97色伦图片97综合影院| 无人高清视频完整版在线观看| 天天躁日日躁狠狠躁欧美老妇小说| JZZIJZZIJ亚洲乱熟无码| 国产精品日本无码久久一老A| 中文字幕熟女人妻佐佐木| 三上悠亚人妻中文字幕在线| 亚洲乱色熟女一区二区三区蜜臀|