超臨界CO2萃取洋蔥油工藝優(yōu)化與中試放大試驗(yàn)

制藥工程論文編號(hào):ZY080    論文字?jǐn)?shù):10997,頁(yè)數(shù):23  附任務(wù)書，開題報(bào)告，文獻(xiàn)綜述，外文翻譯

目錄
中文摘要.I
英文摘要II
目錄..III～I(xiàn)V
緒論..1
概述.1
洋蔥油的性質(zhì)..1
洋蔥油的保健療效.2
超臨界萃取原理及特點(diǎn)3
萃取原理.3
萃取特點(diǎn).3
超臨界萃取技術(shù)的應(yīng)用4
在食品方面的應(yīng)用..4
在醫(yī)藥保健品方面的應(yīng)用..5
在化工方面的應(yīng)用..5
在生物工程方面的應(yīng)用.6
材料與方法..7
2.1 材料與試劑.7
2.2 儀器.7
2.3 實(shí)驗(yàn)裝置及工藝流程..7
   2.3.1 超臨界二氧化碳萃取洋蔥油的研究7
   2.3.2 超臨界二氧化碳萃取洋蔥油中試放大試驗(yàn)的研究8
2.4 方法.8
   2.4.1 超臨界二氧化碳流體萃取洋蔥油..9
        2.4.1.1 單因素試驗(yàn).9
        2.4.1.2 超臨界萃取工藝條件的優(yōu)化..9
   2.4.2 中試放大試驗(yàn)研究..9
   2.4.3 萃取物后處理及洋蔥油得率.. 9～10
3．結(jié)果與討論..11
   3.1 單因素試驗(yàn)結(jié)果與分析..11
      3.1.1 萃取壓力對(duì)洋蔥油得率的影響11
      3.1.2 萃取溫度對(duì)洋蔥油得率的影響..11～12
      3.1.3 萃取時(shí)間對(duì)洋蔥油得率的影響..12～13
      3.1.4 夾帶劑用量對(duì)洋蔥油得率的影響.13
   3.2 超臨界二氧化碳流體萃取洋蔥油的最佳工藝參數(shù)的確定.14
   3.3 中試放大試驗(yàn)研究的結(jié)果14
   3.4 結(jié)論..14～15
4．總結(jié)與展望.16
   4.1 實(shí)驗(yàn)總結(jié)..16
   4.2 展望..16～17
致謝.18
參考文獻(xiàn)19

摘 要：洋蔥具有辛辣風(fēng)味，是東西方飲食中一種重要的日常調(diào)味用蔬菜。洋蔥具有殺滅多種病菌，抗動(dòng)脈硬化，降血壓、血脂及防治冠心病的功能。洋蔥油主要成分為硫化物，是鮮洋蔥的辛辣成分，也是洋蔥的主要活性成分；洋蔥油進(jìn)行適當(dāng)包埋處理后，將是一種很有開發(fā)應(yīng)用價(jià)值的保健品。
 而本試驗(yàn)通過采用超臨界CO2萃取技術(shù)對(duì)洋蔥中的洋蔥油進(jìn)行萃取，著重探討了萃取壓力、萃取溫度、萃取時(shí)間以及夾帶劑用量等重要參數(shù)對(duì)洋蔥油得率的影響，通過試驗(yàn)，確定了超臨界CO2技術(shù)萃取洋蔥油的最佳工藝參數(shù)為萃取壓力20MPa，萃取溫度40℃、萃取時(shí)間240min、夾帶劑用量為15%。同時(shí)，利用這些最優(yōu)參數(shù)對(duì)洋蔥油進(jìn)行中試放大試驗(yàn)，所取得的洋蔥油得率可達(dá)到0.489%，結(jié)果與小試試驗(yàn)所得到的結(jié)果相近。
關(guān)鍵詞：超臨界，二氧化碳，萃取，洋蔥油，中試

Abstract: Onion (Allium cepa L) is an important flavoring that commands universal application as seasonings with vegetables in East daily diet. The onion can be used to kill a variety of bacteria, fight against arteriosclerosis, hypertensive, hyperlipemia and coronary heart disease. Sulfur compounds is the main component in onion oil, the spicy ingredient in fresh onion, the major active ingredient in onion; Onion will be a health products that has great value of development and application after the process of appropriate embedding.
 The experiment on extraction of onion oil with supercritical carbon dioxide was carried out. The influences of operating pressure, operating temperature, operating time, entrainer and other important parameters on the yields of onion oil were studied. Through experiments, the best parameter of extraction of onion oil with SC-CO2 extraction technology was ascertained. The optimal parameters were that extracting pressure, 20MPa; extracting temperature, 40℃; extracting time, 240min; 15% anhydrous ethanol. Meanwhile, the pilot scale experiment at this condition was carried out, the yield of onion oil could be 0.489%. The result was same as the ones of bench scale. 

Key Words: Supercritical; Dioxide carbon; Extraction; Onion oil; Pilot scale