桂花深加工工藝的研究

制藥工程論文編號:ZY016    論文字數:11813,頁數:21

目  錄
中文摘要. ………………………………………………………………………………………I
英文摘要 ………………………………………………………………………………………II
目錄……………………………………………………………………………………………III
1. 緒論………………………………………………………………………………………… 1
    1.1 前言……………………………………………………………………………………1
 1.2 研究現狀………………………………………………………………………………2
2. 實驗部分 ……………………………………………………………………………………8
 2.1 實驗儀器與試劑  ……………………………………………………………………8
 2.2 桂花的保存實驗  ……………………………………………………………………8
 2.3桂花浸膏的超臨界萃取 …………………………………………………………… 9
 2.4桂花花渣中黃酮類化物的提取  …………………………………………………. 9
3. 結果與討論 ……………………………………………………………………………… 13
 3.1 桂花的保存 …………………………………………………………………………13
 3.2 桂花浸膏的超臨界萃取結果與問題……………………………………………… 14
 3.3 桂花中黃酮類的提取結論………………………………………………………… 14
4. 總結與展望 ……………………………………………………………………………… 16
致謝 ……………………………………………………………………………………………17
參考文獻 ………………………………………………………………………………………18

摘要：桂花在我國種植已有2500余年的栽培歷史，桂花芳香成分的研究始于20世紀60年代，人們研究桂花芳香成分多以桂花浸膏或凈油為對象。它又具有很高的觀賞價值、食用價值、藥用價值。因此，桂花生產的產業化經營前景十分廣闊。本文介紹了幾種保存桂花的方法；研究用超臨界二氧化碳流體從桂花中提取桂花浸膏的工藝，并探索操作壓力、溫度及時間對桂花浸膏萃取率的影響．得到最佳萃取條件為：壓力14MPa，溫度40℃，時間4 h；利用乙醇等有機溶劑提取桂花花渣中的黃酮類化合物，重點探討了采用乙醇提取法提取黃酮類化合物的最佳工藝條件。實驗結果表明:乙醇提取法的最適工藝參數為浸提劑乙醇濃度70%、浸提溫度75℃、浸提時間3h。

關鍵詞：桂花；超臨界萃取；黃酮類化合物；乙醇提取法；
Abstract：Osmanthus Fragrans`s cultivation in China has 2,500 years of cultural history.The study of osmanthus Fragrans aromatic components began in the 1960s, people ususlly paid attention on osmanthus Fragrans`s concrete or oil when they studied the osmanthus Fragrans`s aromatic ingredients. It also has high ornamental value, the value of food and the medicinal value. Therefore, Osmanthus Fragrans has a very broad market prospects.In this paper ,there are several preservation methods of Osmanthus Fragrans and the experiment by using supercritical carbon dioxide extraction of Osmanthus Fragrans concrete and explore its operating pressure, temperature and time on the Osmanthus Fragrans concrete extract rate of extraction. The experimental results showed that the proper conditions or extract of Osmanthus Fragrans concrete are:pressure 14 Mpa,temperature 40℃ ,time 4 hours. By means of the methods of ethanol-extracting,the optimum extraction conditions of flavonoids in Osmanthus Fragrans`s slag were determined.The optimum conditions of ethanol-extracting were obtained as follows:70% ethanol as extraction solvent at 75℃ for 3 hours.
Keywords: Osmanthus Fragrans; supercritical carbon dioxide extraction; Flavonoids; ethanol-extracting;