久久久久久人妻无码,使劲快高潮了国语对白在线,开小箩莉嫩苞h公交,可以直接看av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(shí)間:2018-06-12 點(diǎn)擊量:1965

    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(jìn)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(jī)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(jì)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(jìn)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.

 

国产亚洲精品A在线无码麻豆| 漂亮人妻去按摩被按中出| 国产国拍亚洲精品MV在线观看| 男男车车的车车网站w98免费| 亚洲成AV人片无码BT种子下载| 国产精品免费视频| 啊灬啊灬啊灬快灬深用力a片男男 亚洲V国产V天堂A无码二区久久 | 主人在调教室性调教女仆游戏| 男女一边摸一边做爽爽动态图| 国产人妻无码一区二区三区| 老汉胯下的女学生| 国产毛毛浓密茂盛| 国内精品人妻无码久久久影院蜜桃 | 国产精品一国产精品| 性xxxx欧美孕妇奶水| 中文字幕乱码中文| 强制被绑震动器高潮大叫| 国产老熟女老女人老人| 清纯校花沦为胯下玩物| 伊人色综合久久天天伊人| 国产刺激对白 国产情侣| 三级三级久久三级久久| 丽娟两腿间一大丛黑毛| 女孩子做哭另一个女孩子| 亚洲AV香蕉一区区二区三区| 白洁性荡生活第90章| 少妇性活bbbbbbbbb四川| 国产麻豆一精品一av一免费 | 久久人妻无码毛片a片麻豆| 性欧美丰满熟妇xxxx性| 草莓视频app黄| 啦啦啦资源视频在线观看8| 18以下岁禁止1000部免费| 一个人看www在线视频| 国产精品久久人妻拍拍水牛影视| 美国式禁忌3| 爱我久久免费观看高清| brazzers欧美| 精品国产精品国产偷麻豆| 一起碰一起噜一起| 日本a级毛片|