重庆时时彩官网|重庆时时彩的规律

中草药防晒成分的提取及防晒效果评价

时间:2018-01-08 13:11来源:毕业论文
探讨了黄芩、红花、玉蝴蝶三种中草药植物蒸馏水和乙醇提取液的紫外线吸收性能---即防晒性能,并将其中防晒性能最强的提取物有效成分作为天然防晒成分制成中草药防晒霜。通过对
摘要:本文探讨了黄芩、红花、玉蝴蝶三种中草药植物蒸馏水和乙醇提取液的紫外线吸收性能---即防晒性能,并将其中防晒性能最强的提取物有效成分作为天然防晒成分制成中草药防晒霜。通过对配制工艺的探讨、产品的质量检测和在防晒霜中的配伍性进行研究重庆时时彩的规律结果表明  :(1)采用紫外分光光度法,在波长200~400nm范围内对浓度均为0.4mg/ml乙醇和蒸馏水提取的黄芩、红花、玉蝴蝶样品进行扫描,样品均有紫外吸收性能,其中用蒸馏水提取的植物提取液中红花的紫外吸收最强,用乙醇提取的植物提取液中黄芩的紫外吸收最强。(2)将用乙醇提取的紫外吸收最强的黄芩溶液加入防晒霜中,进行45℃耐热检测、-10℃耐寒检测、耐热耐寒综合检测、离心、测其pH,有无刺激性等性能检测后,发现目测样品无分层,无颜色变化,无气味变化。证明黄芩加入量为2g的防晒霜防晒效果和样品的稳定性均好。说明产品具有良好的功效,质量符合要求,具有一定的推广价值。17146
关键词:中草药;紫外分光光度法;防晒作用
Research  on  the  Sun-screening  Effect  for  Extracts  of  Chinese  Herbal  Medicine  and  preventing bask in the effect evaluation compatibility
Abstract:To research on the sun-screening effect for alcohol extracts of Chinese herbal medicine ,from which the author got the effective elements which were used as the savage additive to produce the whitening and sunscreen cream,and then the author probed into the cream manufacture process and tested the quality of the product. The product can be proved that it has the better beauty effect,the quality meets with the request,so it has a potential market in the future.Methods scan the samples from 200nm to 400nm by ultraviolet pectrophometry, and contrast them with the same concentration of sample extraction buffer. Testing the stability of sunscreen, including heat and low temperature resistance .The samples will be put in —10℃, 45℃, environment for 24 hours, and looking for changes of the sample such as color station. Meanwhile smelling the smell whether changing. Putting one of extracts into the sample after stabilizing. Then use the same way testing stability and compatibility of s the mixture.the result is The product has good effect, the quality requirements, and has a certain promotion. 源自六/维\论]文[网!加7位QQ324.9114 重庆时时彩的规律 www.mamitama.com
Keyword:Chinese herbs; ultraviolet spectrophotomety; sunscreen
目  录
1 绪论    4
1.1 国内外研究现状概况    4
1.1.1 紫外线对皮肤的影响    4
1.1.2  防晒剂分类及作用机理    5
1.1.3 中草药与植物成分    6
1.1.4 中草药防晒成分的提取    7
1.1.5中草药防晒霜的防晒效果评价方法    7
1.2本课题的研究目的和意义    8
2 实验内容    9
2.1 实验原料与设备    9
2.1.1 实验原料    9
2.1.2 实验仪器与设备    10
2.2实验步骤    12
2.2.1 植物提取方法    12
2.2.2紫外测定方法    12
2.2.3防晒霜配方    12
2.2.4 植物提取加入量对产品的性能影响    13
2.2.5 防晒霜的制备方法    13
2.2.6防晒霜性能的测试方法    14
(1)防晒霜稳定性检测    14
(2) PH值的测定    15
3.实验结果讨论与分析    15
3.1 产率的计算    15
3.2 紫外光谱数据处理    16
3.3  植物提取物加入量对产品性能的影响    16 中草药防晒成分的提取及防晒效果评价:重庆时时彩的规律/a/yixue/20180108/18714.html
------分隔线----------------------------
推荐内容
  • 双识别位点萘酰亚胺类氟离子受体 本文来源:http://www.mamitama.com/a/www.hunantoday.cn/

    重庆时时彩的规律 www.mamitama.com,  据《期货日报》报道,东证期货被立案调查,很可能与公司客户为了取得较大比例返佣,由经纪户转资管户有关,在此过程中牵涉交易系统、后台风控以及人员配备等多个环节,容易出现是否合规的问题。FilephotoshowsTigerWoodsoftheUnitedStateswalksoffthe18thgreenfollowingthefinalroundoftheHeroWorldChallengeatAlbany,TheBahamasonDecember4,2016inNassau,Bahamas.[Photo/VCG]FormerworldnumberoneTigerWoodssaidhewouldcompeteintheEuropeanTour'sDubaiDesertClassicnextmonthashechartshiscomebackfrominjury."I'vealwaysenjoyedplayinginDubaiandit'sfantastictoseehowthecityhasgrownphenomenallyfromwhenIfirststartedplayingthere,"WoodssaidontheeventwebsiteonThursday.Woods,sidelinedbybackpainforthepast15months,willlaunchhisofficialcomebackattheJan26-29FarmersInsuranceOpenatTorreyPinesinsouthernCalifornia,thePGAToureventannouncedonWednesday.TheDesertClassicatEmiratesGolfClubisthelongest-runningEuropeanToureventintheregionandtakesplacefromFeb2-5.WoodshasalsocommittedtoplaytheFeb16-19GenesisOpenatRiviera,California,andhishometowntournament,theHondaClassicinsouthFlorida,thefollowingweekasheleadsuptotheMastersinAugustainApril.HeisexpectedtoplaytheMarch16-19ArnoldPalmerInvitationalinOrlando,Florida,aneventhehaswonarecordeighttimes.The41-year-oldAmericanhasnotplayedanofficialmoneyeventsinceAug2015andpulledoutofaplannedreturnatthefirsteventofthe2016-17seasoninnorthernCaliforniainOctober.Hesaidthenthathisgamewasnotreadybutthe14-timesmajorchampionsubsequentlymadehiscomebackattheHeroWorldChallenge,anunofficialPGATourevent,intheBahamasinDecemberwherehefinished15thinan18-manfield.WoodswillbemakinghiseighthappearanceinDubai,wherehehaswontwiceandis92-underparforthe28roundshehasplayedtheresince2001.HejoinsworldnumbertwoRoryMcIlroy,Sweden'sBritishOpenchampionHenrikStensonandMasterswinnerDannyWillettamongleadingplayersataneventdubbedthe'MajoroftheMiddleEast'."ItwasgreatwinninginDubaiin2006and2008.WhenyouwininDubai,youknowyou'vebeatenanoutstandingfield,"saidWoods.TigerWoodsoftheUnitedStateswalksoffthe18thgreenfollowingthefinalroundoftheHeroWorldChallengeatAlbany,TheBahamasonDecember4,2016inNassau,Bahamas.

    通过引入Si-O键和-CHCN基双结合位点设计并合成一种荧光化合物...

  • 二氨基嘧啶类ACK1抑制剂的3D-QSAR模型

    3D定量结构活性关系(3D-QSAR)已经用于探索19个此类化合物分子...

  • 单片机亚健康状态监测用心电信息

    论文基于心电信号的特征选用一次性软电极作为传感器,并设计...

  • 蜂胶软胶囊的质量控制研究+文献综

    为研究市售蜂胶软胶囊的质量,建立了咖啡酸、乔松素、白杨素...

  • 脲基类1-萘基乙胺拆分剂的研究

    维生素D固醇和磷酸盐结合剂用于治疗甲状旁腺功能亢进症,但它...

  • 透明质酸修饰氧化石墨烯的制备及

    通过Hummers法制备氧化石墨烯(graphene oxide ,GO),并通过共价修...

小说 小说 小说 小说 小说 小说
小说 小说 小说 小说 小说 小说
小说 小说 小说 小说 小说 小说