聲光可調(diào)—近紅外漫反射光譜法快速評(píng)價(jià)黃芪藥材質(zhì)量
發(fā)布時(shí)間:2019-08-30 來源: 日記大全 點(diǎn)擊:
中圖分類號(hào) R978.7 文獻(xiàn)標(biāo)志碼 A 文章編號(hào) 1001-0408(2018)02-0168-04
DOI 10.6039/j.issn.1001-0408.2018.02.06
摘 要 目的:建立快速評(píng)價(jià)黃芪藥材質(zhì)量的方法。方法:采用烘干法測(cè)定黃芪藥材樣品水分含量,采用高效液相色譜(HPLC)-蒸發(fā)光散射檢測(cè)法(ELSD)測(cè)定黃芪甲苷的含量,采用HPLC法測(cè)定毛蕊異黃酮葡萄糖苷的含量(均作為參考值)。采用聲光可調(diào)-近紅外漫反射光譜法結(jié)合偏最小二乘法建立預(yù)測(cè)黃芪藥材中上述指標(biāo)含量的定量模型(作為預(yù)測(cè)值)。根據(jù)參考值,采集60批藥材樣品,采用一階導(dǎo)數(shù)聯(lián)合平滑降噪法預(yù)處理光譜,水分、黃芪甲苷、毛蕊異黃酮葡萄糖苷含量預(yù)測(cè)的最佳波段分別為1 100~2 300、1 080~2 160、1 170~2 230 nm。結(jié)果:藥材樣品中水分、黃芪甲苷、毛蕊異黃酮葡萄糖苷的含量測(cè)定方法學(xué)考察符合要求。水分、黃芪甲苷、毛蕊異黃酮葡萄糖苷定量模型校正均方根偏差分別為0.132 3、0.006 6、0.002 5,預(yù)測(cè)均方根偏差分別為0.237 1、0.016 3、0.004 7,校正集內(nèi)部交叉驗(yàn)證相關(guān)系數(shù)分別為0.975 9、0.953 3、0.968 0;定量模型內(nèi)部驗(yàn)證偏差分別為1.43%、1.90%、1.84%,外部驗(yàn)證偏差分別為1.73%、2.68%、2.71%。結(jié)論:該方法快速、準(zhǔn)確、簡(jiǎn)便、無污染,可用于黃芪藥材質(zhì)量的快速評(píng)價(jià)。
關(guān)鍵詞 近紅外漫反射光譜法;聲光可調(diào);黃芪;水分;黃芪甲苷;毛蕊異黃酮葡萄糖苷
ABSTRACT OBJECTIVE: To establish the method for rapid quality evaluation of Astragali Radix. METHODS: The moisture of medicinal material was determined by oven drying method; the content of astragaloside Ⅳ was determined by HPLC-ELSD; the content of isoflavone glucoside was determined by HPLC (as reference value). The partial least squares (PLS) method combined with acousto-optic turnable filter-NIDRS was adopted to build quantitative model of above indexes in Astragali Radix (as predict value). According to reference value, 60 batches of sample were collected. The spectra pretreatment was conducted by first derivative method combined with Savitzky golay. The optimal bands of moisture, astragaloside Ⅳ and isoflavone glucoside were 1 100- 2 300 nm,1 080-2 160 nm,1 170-2 230 nm,respectively. RESULTS: The content determination of moisture, astragaloside Ⅳ and isoflavone glucoside in samples were all in line with methodology requirements. The corrected mean square root deviation of quantitative model for moisture, astragaloside Ⅳ, calycosin glucoside were 0.132 3, 0.006 6, 0.002 5, respectively; predicted mean square root deviation were 0.237 1, 0.016 3, 0.004 7; internal cross validation coefficient of correction set were 0.975 9, 0.953 3, 0.968 0; internal verification deviation of quantitative model were 1.43%, 1.90%, 1.84%; external verification deviation were 1.73%, 2.68%, 2.71%, respectively. CONCLUSIONS: The method is rapid, accurate,simple,pollution-free, and can be used for rapid quality evaluation of Astragali Radix.
KEYWORDS NIDRS; Acousto-optic turnable filter; Astragali Radix; Moisture; Astragaloside Ⅳ; Isoflavone glucoside
中藥材在采購(gòu)、驗(yàn)收、入庫、投料過程中存在著質(zhì)量檢測(cè)程序繁雜、費(fèi)時(shí)長(zhǎng)等問題,不能滿足大批量的現(xiàn)場(chǎng)快速分析要求。為解決該問題,有必要研發(fā)涵蓋水分、浸出物、特征性成分等不同檢測(cè)項(xiàng)目的快速檢測(cè)方法作為企業(yè)內(nèi)部質(zhì)量控制標(biāo)準(zhǔn)。
近紅外漫反射光譜法(NIR)作為一種快速分析方法,具有很多優(yōu)點(diǎn),如快速、無損、環(huán)保,并可對(duì)固體、液體和氣體樣品直接進(jìn)行測(cè)定,無需復(fù)雜的前處理過程[1]。隨著儀器與軟件的發(fā)展,NIR法已廣泛應(yīng)用于農(nóng)業(yè)、生物醫(yī)學(xué)、石油化工等領(lǐng)域[2-4]。
相關(guān)熱詞搜索:可調(diào) 黃芪 聲光 藥材 反射
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