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1、河南科技大學(xué)本科畢業(yè)設(shè)計(jì)論文目錄第一章大豆異黃酮的提取方法·································11.1乙醇提取法·················································11.2酸水解提取法··············································2第二章大豆異黃酮的性質(zhì)······································22.1溶解性··································
2、····················32.2紫外最大吸收波長········································32.3水解························································4第三章大豆異黃酮的作用研究································53.1抗癌防癌···················································53.2對骨代謝的作用·················
3、··························63.3預(yù)防心血管等其它疾病···································7河南科技大學(xué)本科畢業(yè)設(shè)計(jì)論文第四章總結(jié)······················································7參考文獻(xiàn)························································8河南科技大學(xué)本科畢業(yè)設(shè)計(jì)論文摘要：大豆異黃酮是黃酮類化合物的一種，簡要介紹了大豆異黃酮的物理化學(xué)性質(zhì)和大豆異黃酮
4、的提取和純化研究進(jìn)展。天然大豆異黃大豆異黃酮是大豆生長過程中形成的一類次生代謝產(chǎn)物。大量研究表明大豆異黃酮在防癌抗癌、防治心血管疾病、預(yù)防骨質(zhì)疏松癥等方面有重要作用。本文主要對他的提取方法以及性質(zhì)作用進(jìn)行分析論證。關(guān)鍵詞：大豆異黃酮提取方法性質(zhì)作用研究Abstract:soybeanisoflavoneisakindofflavonoids,brieflyintroducedtheresearchprogressofextractionandpurificationofthephysicalandchemicalproperti
5、esandsoybeanisoflavoneofsoybeanisoflavone.Naturalsoyisoflavone.Soyisoflavonesareaclassofsecondarymetabolitesinthegrowthofsoybean.Anumberofstudieshaveshownthatsoybeanisoflavonehasanimportantroleinanticancer,preventionandtreatmentofcardiovasculardiseases,preventionofos
6、teoporosis.Thispapermainlyanalysestheextractionmethodsandpropertiesforhis.Keywords:natureofextractionmethodsofsoybeanisoflavone異黃酮是黃酮類化合物的一種，主要存在于大豆科植物中，是大豆生長中形成的一類次生代謝物。大豆異黃酮主要存在于大豆種子的子葉和胚軸中，種皮含量極少。目前已經(jīng)發(fā)現(xiàn)的大豆異黃酮共有12種，分為游離型的甙元和結(jié)合型的糖甙兩類。[1]甙元為其中的生物活性成分并且含量極少，占總含量的2％～3％
7、，分別為大豆黃素、黃豆黃素及染料木素。對應(yīng)的B一葡萄糖苷形式為：大豆黃苷、黃豆黃苷、染料木苷。另外還有較少的葡萄糖苷的乙?；衔锖捅；衔?。研究表明，大豆異黃酮具有預(yù)防癌癥、心血管疾病、骨質(zhì)疏松癥和降低婦女更年期綜合癥等生理功能。該產(chǎn)品具有廣闊的開發(fā)前景和新的應(yīng)用價(jià)值。第1章大豆異黃酮的提取方法在自然界中大豆異黃酮的資源十分有限，作為一種具有廣闊開發(fā)前景的藥用植物活性成分，如何高效率地提取大豆異黃酮、確定最佳的提取純化方法顯得尤為重要。近年來國內(nèi)外學(xué)者對大豆異黃酮的提取及分離純化工藝進(jìn)行了大量的研究，現(xiàn)將其主要研究進(jìn)展做
8、一簡述，為進(jìn)一步研究開發(fā)提供資料。1.1乙醇提取法：7河南科技大學(xué)本科畢業(yè)設(shè)計(jì)論文豆粕中蛋白質(zhì)含量很高，用醇提取異黃酮時(shí)，一方面要求異黃酮的提取率要高；另一方面要求蛋白質(zhì)的提取量低。因?yàn)榈鞍踪|(zhì)的存在不利于提取液的濃縮和異黃酮的分離操作，因此需要對醇提工藝條件進(jìn)行
