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本科畢業(yè)論文-不同方法提取酸湯魚特色香料魚蓼揮發(fā)油的比較研究(文件)

 

【正文】 appreciate the beautiful flower and they noticed that something romance happened there. Then later on, there were some little surprises once in a while. Once, there was something wrong with my drawer and I had plained about it unconsciously. And he fixed it for me. Then the other day, he placed several pink diamond roses beside the flower with a piece of paper saying” I love you more than I can say! Diamond stands for marriage, rose stand for love. I hope you are mine, bee my wife. You are the only girl who I really want to spend the rest of my life to stand by.” Although there were some grammar errors but I got what he meant. He meant so clear and so direct. s Day! in shops, hotels and restaurants. But few young women will mark the festival with their boyfriends, or take part in traditional activities to pray for cleverness. A largescale of exhibition on the Silk Road opened to the public in the National Museum on Thursday. The exhibition displays more than 400 treasures from Shaanxi province, Gansu province and 14 other regions. It is largest scale exhibition that shows the history of the Silk Road in recent years. Ass misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked Niulang, who carried his two children in baskets strung from a shoulder pole, off on a chase after the empress. The pursuit enraged the empress, who took her hairpin and slashed it across the sky creating the Milky Way which separated husband from wife. But all was not lost as magpies, moved by their love and devotion, formed a bridge across the Milky Way to reunite the family. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the seventh night of the seventh month. This is how Qixi came to be. The festival can be traced back to the Han Dynasty (206 BCAD 220). Traditionally, people would look up at the sky and find a bright star in the constellation Aquila as well as the star Vega, which are identified as Niulang and Zhinu. The two stars shine on opposite sides of the Milky Way. Customs In bygone days, Qixi was not only a special day for lovers, but also for girls. It is also known as the Begging for Skills Festival or Daughters39。Shutterbugs flock to see for themselves the marvel of splendid colors around the mountains and waters, many of whom have travel a long distance and even camp here only to capture a moment of the nature wonder. Nestled close to the country39。在這里,我以最誠(chéng)摯的謝意感謝您們對(duì)我的辛勤栽培及無(wú)私的幫助!感謝您們?cè)谌松铌P(guān)鍵的時(shí)刻給予我的指引!凱里學(xué)院于以竹2014年3月15日凱 里 學(xué) 院本科畢業(yè)論文(設(shè)計(jì))指導(dǎo)教師審閱意見(jiàn)表學(xué)生姓名于以竹學(xué) 號(hào)2010407094所在學(xué)院化學(xué)與材料工程學(xué)院專 業(yè)化學(xué)指導(dǎo)教師楊曉艷職 稱高級(jí)實(shí)驗(yàn)師論文(設(shè)計(jì))題目不同方法提取酸湯魚特色香料魚蓼揮發(fā)油的比較研究建議成績(jī)對(duì)畢業(yè)論文(設(shè)計(jì))完成情況及質(zhì)量、工作能力及態(tài)度、思想表現(xiàn)、論文學(xué)術(shù)水平等進(jìn)行總體評(píng)價(jià):指導(dǎo)教師簽名: 年 月 日 請(qǐng)您刪除一下內(nèi)容,O(∩_∩)O謝謝?。?!Many people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the sevenday Chinese請(qǐng)您刪除一下內(nèi)容,O(∩_∩)O謝謝?。?!National Day holiday could be the best occasion to enjoy a destination. However, it can also be the easiest way to ruin how you feel about a place and you may bee more fatigued after the holiday, due to battling the large crowds. During peak season, a dream about a place can turn to nightmare without careful planning, especially if you travel with children and older people. As most Chinese people will take the holiday to visit domestic tourist destinations, crowds and busy traffic are inevitable at most places. Also to be expected are increasing transport and acmodation prices, with the possibility that there will be no rooms available. It is also mon that you39。再次,我還要感謝和我一起刻苦探索思考的畢業(yè)論文小組的同學(xué),正是有你們與我共同探討、思考和相互合作,才能克服面對(duì)一個(gè)又一個(gè)的困難和疑問(wèn),使論文能順利完成。畢業(yè)論文從選題立題、實(shí)驗(yàn)設(shè)計(jì)到具體實(shí)驗(yàn)操作、結(jié)果鑒定分析期間、論文的寫作到完成,都是經(jīng)過(guò)楊老師和吳老師的精心點(diǎn)撥。在這大學(xué)的四年生活中離不開(kāi)老師和同學(xué)對(duì)我的關(guān)心,這個(gè)校園記錄了四年的點(diǎn)點(diǎn)滴滴,這些即將是我人生中最美好的回憶。在三種不同的提取方法中,固相微萃取法所提取得揮發(fā)油成分種類多,操作簡(jiǎn)單,提取耗時(shí)少,有利于揮發(fā)油產(chǎn)品的在線檢測(cè);水蒸汽蒸餾提取法比微波輔助提取法更利于對(duì)魚蓼揮發(fā)油的提取。且水蒸汽蒸餾裝置簡(jiǎn)單,價(jià)格便宜,提出的香氣成分、種類多,若想大量的有效提取揮發(fā)油則可采用水蒸汽蒸餾提取法進(jìn)行提取。其中還有月桂醛的相對(duì)含量比辣蓼中的相對(duì)含量高,在常壓微波輔助提取法中月桂醛(%)。(3)%,主要為月桂醇、癸醇、1,4,4a,5,6,6,7,8a八氫2,5,5,8a四甲基1萘甲醇、4,4二甲基四環(huán)[6,3,2,0(2,5).0(1,8)]十三碳9醇等;%,主要為葎草烯、8溴新異長(zhǎng)葉烯、(Z)β金合歡烯、a人參烯等羅漢柏烯等。表2:不同方法提取魚蓼揮發(fā)油中醛類、烯類、醇類化合物百分含量序號(hào)方法醛類化合物相對(duì)含量(%)烯類化合物相對(duì)含量(%)醇類化合物相對(duì)含量(%)1固相微萃取法2水蒸氣蒸餾提取法3常壓微波輔助提取法從揮發(fā)油的成分種類來(lái)看,主要為醛、烯、醇三種類別化合物,其中三類化合物均含有萜類化合物。(4)在分析出來(lái)的化學(xué)成分中,肉豆蔻醛、月桂醛、葎草烯、癸醛、癸醇、月桂醇、(Z)β金合歡烯、反式橙花叔醇等化合物具有很濃的芳香味,可以將其用來(lái)作香料、作日用香精和食用香精。峰面積百分含量在1%以上的有11種,%;相峰面積百分含量在2%以上的有9種,%,相對(duì)含量由高到低的化合物依次為:月桂醛(%)、月桂醇(%)、葎草烯(%)、8溴新異長(zhǎng)葉烯(%)、癸醇(%)、1,4,4a,5,6,6,7,8a八氫2,5,5,8a四甲基1萘甲醇(%)、癸醛(%)、羅漢柏烯(%)、(Z)β金合歡烯(%)。峰面積百分含量在1%以上的有15種,%;相峰面積百分含量在2%以上的有9種,%,對(duì)含量由高到低的化合物依次為:肉豆蔻醛(%)、月桂醇(%)、葎草烯(%)、癸醛(%)、癸醇(%)、 (Z)β金合歡烯( %)、Z,Z,Z1,5,9,9四甲基1,4,7,環(huán)十一碳三烯(%)、十一醛(%)、藍(lán)桉醇(%)。質(zhì)譜條件:離子源(EI);溫度:200℃;電子能量:70eV;檢測(cè)電壓:;質(zhì)量掃描范圍:29800amu。將乙醚注入樣品瓶中(取一瓶,編號(hào)為乙醚1)用GCMS進(jìn)行檢測(cè),鑒定出含有的成分,以作為上述方法檢測(cè)出的物質(zhì)進(jìn)行對(duì)比,去掉檢測(cè)出與乙醚相同物質(zhì),剩下的化學(xué)成分就為揮發(fā)油提取裝置提取法提取得到的揮發(fā)油成分。油層快滴完時(shí),將活塞全打開(kāi),待量筒靜置,將量筒中的油層揮發(fā)至12ml,然后用注射器取5ml的乙醚清洗提取器支管,用注射器吸取乙醚層的中間液體,將萃取液轉(zhuǎn)移至樣品瓶中編號(hào)微波1。當(dāng)支管部分的油層快進(jìn)入活塞時(shí),調(diào)慢速率,以每?jī)擅胍坏蔚稳?。?jīng)過(guò)筆者考查,黔東南地區(qū)的酸模葉蓼天然資源豐富,有得天獨(dú)厚的自然環(huán)境,適宜酸模葉蓼的生長(zhǎng)和培植。蓼科植物除了辣蓼外還其他的
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