久婷婷,欧美吞精喝尿视频在线,亚洲无码三上在线观看,免费人妻区一区二区三区

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.

 

久久精品亚洲精品无码金尊 | 免费少妇荡乳情欲视频| 免费无码av片在线观看| 亚洲v欧美v日韩v国产v| 精品国产乱码久久久久久浪潮| 国产A√精品区二区三区四区| 亚洲成A人无码AV波多野| 毛片毛片| 久久久中文字幕| av网| 欧美贵妇videos性办公室| 亚洲一区综合| 欧美激情国产精品| 九色少妇丨porny丨自拍| 一级黄色视屏| 草草影院第一页| 久久黄色影院| 午夜老司机| 亚洲最大av在线| 女人被躁到高潮嗷嗷叫69视频| 啊啊啊好爽视频| 亚洲精品1区2区| 中国老太性开放| 好色人妻| 午夜精品一区二区久久做老熟女| 色777色| 国产乱码一区二区三区| 亚洲成熟老女毛葺葺| 奇米网7777| 91久久婷婷人人澡人人澡| 成人婷婷网色偷偷亚洲男人的天堂| 91亚洲精品久久久久图片蜜桃| 国产精品乱码一区二三区| 澜沧| 男女男精品免费视频网站| 精品一线二线三线无人区| 欧美亚洲色Aⅴ大片| 欧美一区二区三区激情| 伊人久久大香线蕉av成人| 99视频在线精品免费观看6 | 日本精品久久|