久久精品AⅤ无码中文字字,在线精品国产一区二区三区,欧美xxxx精品另类,性少妇FREESEXVIDEOS高清

網(wǎng)站首頁(yè)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(cè)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(cè)定木犀草素含量

更新時(shí)間:2018-06-12 點(diǎn)擊量:2690

    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(cè)定的研究。支持向量機(jī)法( (LS-SVM))用來(lái)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(gè)主要成份(99.61%), LS-SVM模型在預(yù)測(cè)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(cè)木犀草素含量,預(yù)測(cè)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(wú)損區(qū)分杭白菊栽培種和測(cè)定木犀草素含量的有效方法。該文章利用了VideometerLab 多光譜測(cè)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.

 

自拍偷在线精品自拍偷无码专区| 插我一区二区在线观看| 欧美性十八变态另类| 国产美女裸体无遮挡免费视频 | 亚洲人成绝费网站色WWW| 欧美激情综合色综合啪啪五月 | 97久久精品人人澡人人爽| 精品成人一区二区三区四区 | 99国产精品国产精品九九| 在线观看国产精品日韩av| 免费古装a级毛片无码| 无码人妻丰满熟妇区毛片 | 人妻少妇乱子伦精品无码专区| 亚洲国产精品日韩AV专区 | 免费大片黄在线观看视频| 丰满熟妇乱又伦精品| 麻豆av一区二区三区久久| 中文字幕高清免费日韩视频在线| 亚洲日韩一区精品射精| 免费无码又爽又刺激a片涩涩软件| 蜜臀AV无码精品人妻色欲| 老色鬼永久精品网站| 欧美直播APP| 国产白丝jk捆绑束缚调教视频| 精品免费久久久久久久| 真实单亲乱l仑对白视频| 337p日本欧洲亚洲大胆色噜噜| 波多野结衣人妻厨房大战| 野花 高清 中文 免费 日本| 精品无码一区二区三区在线 | 国产福利精品一区二区| 男人用嘴添女人私密视频| 欧美精品中文字幕亚洲专区| 狠狠精品干练久久久无码中文字幕| 国产成人精品免高潮在线观看| 久久久久精品无码专区| 日本熟妇乱妇熟色a片蜜桃| 国产精品大白屁股XXXXX | 亚洲日本一期二期三期精华液| 不卡无码人妻一区三区音频 | 国产高清在线精品一区|