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[通訊作者]<sup> *</sup>任永申,男,博士,研究方向:民族藥學研究,E-mail:godreny@mail.scuec.edu.cn
Analyze moisture transformation and transport rules during processing of Trichosanthes kirilowii Maxim by using low-field NMR
投稿時間:2019-04-30  修訂日期:2019-04-30
DOI:
中文關鍵詞: 中藥干燥過程  水分含量/水分狀態  低場核磁共振技術  天花粉
英文關鍵詞: drying process of traditional Chinese medicine  moisture content/moisture state  low field nuclear magnetic resonance technology  low field nuclear magnetic resonance technology
基金項目:基金項目:國家自然科學基金資助項目(81773893);國家重大“新藥開發”重大科技專項(2017ZX09301060-001);國家重點研發計劃"中醫藥現代化研究"專項和課題(2017YFC1701004);中南民族大學基礎研究基金(CZP17074)
作者單位E-mail
任永申 中南民族大學藥學院,湖北武漢430074 godreny@mail.scuec.edu.cn 
鄭堯 中南民族大學藥學院,湖北武漢430074  
雷蕾 中南民族大學藥學院,湖北武漢430074  
艾嬌 中南民族大學藥學院,湖北武漢430074  
梁帥 中南民族大學藥學院,湖北武漢430074  
鄧鑫 中南民族大學藥學院,湖北武漢430074  
汪蘭 湖北省農業科學院農產品加工與核農技術研究所,湖北武漢430064  
摘要點擊次數: 210
全文下載次數: 0
中文摘要:
      目的:研究天花粉樣品干燥過程中水分狀態與含量變化規律,為天花粉合理加工提供依據。方法:采用低場核磁共振與成像技術(LF-NMR、MRI)研究天花粉樣品在干制過程中氫質子(H)的橫向弛豫時間(T2)、MRI圖像的變化,揭示樣品中水分含量、狀態與分布變化規律。 結果:鮮天花粉中水分含量為64.96%,主要為自由水(峰面積占比77.79%),其余為束縛水。在干燥過程中,T2向左移動,水流動性降低,自由水含量不斷降低,束縛水含量先減少再增加,隨后在減少;干燥終點時,自由水含量先于束縛水趨近于零值,飲片外層水分先于內層干燥完畢,且干燥過程隨干燥溫度升高而加快。MRI圖像可直觀顯示水分含量和分布區域由外向內的變化。結論 研究建立了中藥水分低場核磁分析技術,可為中藥干燥終點判定與工藝條件優化提供了新的技術手段與示范。
英文摘要:
      Objective Study on the change of moisture status and content during the processing of Trichosanthes kirilowii Maxim. Methods Low-field NMR and imaging techniques (LF-NMR, MRI) were used to investigate the change of transverse relaxation time (T2) and MRI image during processing of Trichosanthes kirilowii Maxim to reveal the rules in moisture content, state and distribution. Results The results showed that the moisture content of fresh sample in the test sample was 64.96%, mainly free water (peak area accounted for 77.79%). During the drying process, T2 moved to the left and the water mobility decreased. The free water content decreased continuously, and the bound water content first increased and then decreased. At the end of the drying, the free water content tended to zero compared with the bound water; the outer layer moisture of the slices was dried earlier than the inner layer, and the drying process was accelerated with the increase of the temperature. The MRI image directly showed that moisture transfer was outside-in process for both increased and decreased. Conclusion The LF-NMR analysis technology of Chinese medicine that have been established in this study, providing new technical means and demonstration for the determination of drying end point and process conditions of traditional Chinese medicine.
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