天然抗氧剂茶多酚的提取及其在食品保鲜中的应用
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摘要
本论文的工作围绕茶多酚的提取、分析和应用展开,主要内容如下:
     系统地研究了茶多酚的提取过程。首先研究了不同因素对茶多酚浸出情况的影响,正交实验选择合适的浸提条件为:用60%乙醇-水溶液在70℃浸提茶叶末2次,每次20min,投料比为1:20,茶多酚的最终浸出量可达茶叶干重的22.5%。研究了实验装置和过滤过程对茶多酚浸出的影响,结果表明,采用通入N_2和装上冷凝管的装置以及趁热过滤能提高茶多酚浸出率。
     其次研究了金属离子沉淀法提取茶多酚的条件,通过反复实验,最终选择以Al~(3+)+Zn~(2+)为复合沉淀剂;HCl转溶,茶多酚的产率提高到11.8%,纯度达到99.5%。
     对样品进行红外扫描得到的红外谱图具有1610cm~(-1)、1510cm~(-1)的苯环吸收,1200cm~(-1)、1020cm~(-1)及820cm~(-1)左右的吡喃环吸收及3400cm~(-1)左右的酚性羟基吸收等吸收谱带,与儿茶素EC的标准谱图对照,证明其有2—苯基苯并吡喃的基本结构。
     在前人工作的基础上运用高效液相色谱(HPLC)对茶多酚进行了分析,与标准品色谱行为对照表明,样品含有(-)-表没食子儿茶素没食子酸脂(EGCG)、(-)-表儿茶素(EC)、(+)-儿茶素(+C)三种儿茶素,并定量测定了样品中EGCG、EC和+C的含量。
     将茶多酚作为天然食品抗氧化剂应用到冷却鲜猪肉的保鲜,实验通过测定冷却鲜肉(于4±0.5℃条件下保存)在贮藏期间感官品质、微生物和理化指标,来评价保鲜效果的好坏。结果表明:与不加茶多酚的冷却肉比较,单独添加0.03%茶多酚的冷却鲜肉,其细菌总数、挥发性盐基氮(TVB-N)值和过氧化值(POV)值都有明显降低,货架寿命延长,但同时也有轻微失色现象发生。实验中首次发现,将0.01%茶多酚、0.01%V_E和0.01%V_C联用同时添加到肉样中,不但抗氧化和防腐效果好,而且茶多酚引起的失色现象也得到一定的抑制。
The thesis focused on extraction, analysis and application of tea polyphenols(TP)
    as follows:
    Systemic study on the extraction of tea polyphenols was carried out. Firstly, the influence caused by some factors on TP leaching rate was studied. The orthogonal experiment showed that the optimum condition of leaching TP was- 60% ethanol as solvent, under 70℃, the ratio of tea and solvent is 1:20, leaching 2 times and 20min
    
    every time. Under the conditions ,the maximum leaching rate of TP reached the 22.5% of tea. The influence of experiment equipment and filter process on TP leaching rate was studied. The result showed that filtering when solution was hot and using the equipment with condensator and N2 could benefit enhancing the rate of TP leaching. Secondly, the condition of extracting TP by depositing TP with metal ion was studied. Through repetitious experiment, the optimum condition of precipitation method was Al3++ Zn2+ as precipitator ,dissolving precipitation with HC1. With this conditions ,the yield and purity of TP was improved to 11.8% and 99.5%.
    Infrared spectra showed absorption as following:benzene absorption at 1610cm-1, 1510 cm-1 , pyrones absorption at 1200 cm-1, 1020 cm-1 and 820 cm-1, and phenol hydroxy absorption at about 3400 cm-1. Compared with the standard spectra of catechin EC ,it could be certified that its frame included 2-phenyl-benpyrones. On the basis of previous work, TP was analyzed by HPLC. Compared with standard samples , EGCG, EC and +C were inspected out in TP sample and we quantitatively determined the content of EGCG, EC and +C in TP sample.
    TP was used as natural food antioxidant to preserve chilled pork, and the effect was appraised by determining the sensory quality, microbial and physichemical value under 4±0.5℃. The results showed that 0.03%TP could lower the value of total quantity of bacillus, total volatile basic nitrogen(TVB-N) .peroxide value (POV) and prolonged the shelf-life of pork when compared with no addition sample , but also could discolor pork. It was remarkably and significantly discovered that 0.01% tea polyphenols, 0.01%VE and 0.01%VC added to chilled pork could not only reduce value of total quantity of bacillus, TVB-N and POV, but also could restrain discolour.
引文
[1] 徐梅生.茶的综合利用.北京:中国农业出版社,1996.5-62
    [2] 陈杖洲.茶资源开发利用大有可为.茶叶机械杂志,1999,(2):8-11
    [3] 詹罗九.茶叶企业与茶业产业化.中国茶叶加工,2000,(1):7-8
    [4] 龚淑英.简述20世纪中国茶叶加工业的发展.中国茶叶加工,1999,(2):2-5
    [5] Mai Jimdin, Chambers Laura J, Richard E, et al. Tea extract used for food presevation. EP 169936. 1986-07-17
    [6] 汪秋安,刘强.茶多酚的提取方法与应用进展.广西轻工业,1999(4):10-14
    [7] 曾振宇,郑为宪.从茶叶中提取茶多酚和咖啡碱的工艺研究.南昌大学学报(工科版),1997,18(4):31-33
    [8] 中华人民共和国国家质量技术监督局.GB8333—87.中华人民共和国国家标准——茶—茶多酚的测定.北京:中国标准出版社,1991.554-555
    [9] 贡长生.茶多酚的提取和应用研究进展.现代化工,1999,19(3):14-16
    [10] 石碧,狄莹.植物多酚.北京:科学出版社,2000.50-268
    [11] 凌关庭.天然食品添加剂手册.北京:化学工业出版社,2000
    [12] Joseph J.Dalluge,Bryant C.Nelson,Jeanice Brown Thomas et al. Selection of column and gradient elution system for the seraration of catechins in green tea using high-performance liquid chromatography. J. of Chromatography A, 1998, 793: 265-274
    [13] 李小洁,晏良军,杨贤强.茶多酚清除自由基和抗氧化作用的研究.环境化学,1992,11(4):13-17
    [14] 张红雨,郑纪庆,姜洪君.茶多酚抗氧化作用的理论探讨.中国油脂,1998,23(6):45-47
    [15] 孙达旺.植物单宁化学.北京:中国林业出版社,1998,407-441
    [16] 沈生荣,赵玉芬,杨贤强等.茶多酚保护生物大分子的自由基机理。浙江农业大学学报,1995,21(4):361-365
    [17] 董金莆,李瑶卿,洪绍梅.茶多酚对8种致病菌最低抑制浓度的研究.食品科学,1995,16(1):6-12
    
    
    [18] Mukhtar H., Ahmad N. Feyes D.K. et al. Green tea polyphenols induce apoptosis and A431. Proc. Amer. Assoc. Cancer Res, 1997,38:580
    [19] John H. Weiburger. Yukihiko Hara, Lisa Dolan et al. Tea polyphenols as inhibitors of mutagenicity of tumor classes of carcinogens. Mutation Reserch, 1996. 371: 57-63
    [20] Yukiaki Kuroda. Bio-antimutaganic activity of green tea catechins in cultured Chinese hamster V79 cells. Mutation Research, 1996,361:179-186
    [21] YanZhao,Jin Cao, Hong Ma et al.Apopotosis induced by tea polyphenols in HL-60 cells. Cancer Letters, 1997,121:163-167
    [22] Vakcuc C. Tim B.N.,Alberts D. S.et al. Inhibitory effect of six green tea catechins and caffeine on the growth of fotir selected human tumor cell lines. Anti-Cancer Drugs, 1996,7(4):461-468
    [23] Lin J K, Liang Y C, Lin-Shiau S-Y, et al. Cancer chemoprevention by tea polyphenols through mitotic transduction blockade. Biochemical Pharmacology, 1999,58(6):911-915
    [24] John M K, Loo G. Effect of epigallocatechin gallate and quercetin on oxidative damage to cellular DNA. Mutation Research/DNA Repair,2000,459(3):211-218
    [25] 毕良武,吴在篙,陈茄鸿等.3,4,5-三甲氧基苯甲醛的合成及应用综述.林产化学与工业,1997,17(4):73-79
    [26] 徐任生.天然产物化学。北京:科学出版社,1993,654-683
    [27] 狄莹,石碧.植物多酚在化妆品中的应用.日用化学工业,1998(3):20-23
    [28] 刘学铭.茶多酚的保健和药理作用及应用前景.食品与发酵工业,1998,24(5):47-51
    [29] 金亦之.新产品“高效去痱花露水”开发调研效果显著,杭州科技,1990,11(5):29-30
    [30] 黄可泰.茶多酚对口腔变形链球菌抑制作用及其耐药性的研究.食品工业,1992,9(30):27-29
    [31] Arora D. S., Bhardwaj, S. K. Antimicrobial activity of tea (Camellia sinensis) against some plant pathogens. Geobios (Jodhpur), 1997, 24 (2-3): 127-131
    [32] 凌关庭.天然食品添加剂手册.北京:化学工业出版社,2000
    [33] Sherwin.E.R. Antioxidants. New York:Dekker Press, 1990
    [34] Chen,C.H.,Pearson,A.M.&Gray, J,I. Effects of synthetic antioxidants
    
    (BHA,BHT, PG)on the mutagenicity of IQ-like compounds. Food Chemistry, 1992,(43): 177-183
    [35] Sun.B.X.&Fukuhara, M.Effects of co-administration of butylated hydroxytoluene, butylated hydroxy anisole and flavonoids on the activation of mutagens and drug-metabolizing enzymes in mice. Toxicology, 1997, (22):61-72
    [36] Namiki M. Antioxidants/antimutagens in food. Critical Review in Food Science and Nutrition, 1990,(29):273-300
    [37] Shuze Tang. Anti-oxidant activity of added tea catechins on lipid oxidation of raw minced red meat,poultry and fish muscle. International Journal of Science and Technology, 2001,(36):685-692
    [38] 马广彦,徐振峰.间苯二酚在聚合物凝胶堵水技术中的应用.油田化学.1997,14(3):286-289
    [39] 周志,汪兴平,莫开菊等.Al~(3+)沉淀法对茶多酚制各效果的影响研究.食品科学,2002,23(6):88-90
    [40] 董文宾,胡英,张建华.吸附树脂法制备茶多酚精品的工艺研究.西北轻工业学院学报,2002,20(5):1-8
    [41] 袁珂.从绿茶叶中提取茶多酚的工艺方法.林产化学与工业,1997,17(1):56~60
    [42] 姜爱莉.姚宝书.茶叶中有效组分的提取工艺及条件的研究.天津轻工业学院学报,1998(2):20-24
    [43] 熊何建,胡慰望,谢笔均.茶多酚分离制备的新工艺.食品工业科技,1997(6):32-34
    [44] 伊莲.茶多酚制备工艺的改进研究.食品科技,1998(6):33-34
    [45] 胡秋辉,姜梅,朱建成.茶叶中咖啡碱和多酚类提取技术研究.天然产物研究与开发.1997.9(2):63-66
    [46] 李新生.喻龙,李宏.从莲花绿茶中提取茶多酚.化学世界,1997,38(5):255—258
    [47] 周志.汪兴平,张家年等.微波在茶多酚提取技术上的应用研究.湖北民族学院学报(自然科学版),2001,19(2):8-10
    [48] 伊莲.超声波法提取茶多酚的实验研究.食品工业,1999,(3):10-11
    [49] 宓晓黎,杨炎,袁建新.超临界CO_2萃取茶叶中EGCG等儿茶素组分的工艺研究.中国茶叶,1997,18(6):18-19
    
    
    [50] 李军,冯耀声.超临界二氧化碳萃取茶多酚的研究.天然产物研究与开发,1996,8(3):42-47
    [51] 汪小钢,萧伟祥..超临界二氧化碳提取茶叶中咖啡碱.茶叶科学,1998,18(1):65-69
    [52] 刘仲华,黄建安,施兆鹏.儿茶素提取工艺技术研究.湖南农业大学学报(自然科学版),1997,23(6):537-542
    [53] 海力茜,孙怀静,李之平.从绿茶中同时提取茶多酚和咖啡碱.卫生研究,1998,27(3):195-196
    [54] 曾振宇,郑为宪.从茶叶中提取茶多酚和咖啡碱的工艺研究.南开大学学报(工程版),1997,19(4):31-33
    [55] 葛宜掌,金红.茶多酚的离子沉淀提取法。应用化学,1995,12(2):105-109
    [56] 黄惠莉,林文奕.茶多酚的提取和抗氧化性能的研究.华侨大学学报(自然科学版),1996,17(4):403-406
    [57] 陈海霞,谢笔均.树脂法从茶叶总综合提取有效成分的研究.精细化工,2000,17(8):493-495
    [58] 陈劲春,李一,刘春秀.四种吸附材料分离茶多酚的初步比较效果.北京化工大学学报,2000,27(2):95-96
    [59] 袁华,容如滨,曹海田等.低咖啡因茶多酚提取新工艺.湖北化工,2000(3):12-13
    [60] 周光宏主编,肉品学.北京:中国农业科技出版社,1999
    [61] Williams S, K. Sodium lactate affects shelf life and consumer acceptance of fresh catfish fillets under simulated retail conditions. J. of Food Science. 1995, 60(3): 636-639
    [62] 中华人民共和国国家标准.食品卫生检验方法微生物学部分,北京:中国标准出版社,1995,161-169
    [63] 中华人民共和国国家标准.食品卫生检验方法理化检验部分.北京:中国标准出版社,1996,100-101
    [64] 杨国义主编 食品安全与卫生强制性标准实用手册.西宁:青海人民出版社,2002
    [65] 李家瑞编译,《食品化学》。北京:轻工业出版社,1987
    [66] 李爱军 欧仕益 罗泽榕等.一种天然抗氧化剂复合物抗氧化作用的研究.食品科学,2002,(1):55-58
    
    
    [67] 张小宇等 姜汁对鲜猪肉货架寿命的影响研究.肉类工业,2001,4(238):15-16
    [68] 赵丽萍,鲜肉非冷藏保鲜的试验研究.硕士论文.吉林工业大学,1998
    [69] 贾志胜,茶多酚抗氧化作用的微环境效应及与α—生育酚抗氧化协同作用.博士论文.兰州大学,1998
    [70] 高泊,茶叶中茶多酚的提取及其抗氧化性能的应用研究.硕士论文,中南工业大学,2001
    [71] 贾志胜 周波,茶多酚与维生素E的抗氧化协同作用.中国化学会第一届有机化学学术会议暨第七届有机合成学术会议,第八届物理有机学术会议,第六届天然有机学术会议.1997,457
    [72] 王绍美 赵讲芬,茶多酚与Vc对猪油乳化体系协同抗氧化性研究.国外医学:卫生学分册,2000,021(006):.24-27
    [73] 胡秀芳 毛建妹 蒋丽萍等,茶多酚与其他抗氧化剂的协同作用.茶叶,2000.26(2):66-69
    [74] Jia Z. S., Zhou b., Yang L., et al. Antioxidation synergism of tea polyphenos and α- tocopherol anainst free radical induced peroxidation of linoleic acid in solution. J. Chem. Soc., Perk in Trans. 1998, 2: 911-915
    [75] Houben J.H., Dijk A. V. Effect of dietary vitamin E supplementation and packaging on the colour stability of sliced pasteurized beef ham. Meat Science. 2001, 58: 403-407
    [76] Gatellier P., Hamelin C., Durand Y., et al, Effect of dietary vitamin E supplementation on colour stability, and lipid oxidation of air and modified atmosphere-packaged beef. Meat Science. 2001, 59: 133-140
    [77] Dineen N., Kerry J. P., Buckley D. J., et al. Effect of dietary α-tocopheryl acetate supplementation on the shelf-life stability of reduced nitrite cooked ham products. International Journal of food science and technology. 2001, 36: 631-639
    [78] 李国强,食品 饮品 保健品安全卫生监督管理与检测分析技术标准实务全书.北京:中国农业科学技术出版社,2002
    [79] 王听,果蔬涂膜保鲜机理的试验研究。硕士学位论文,吉林工业大学 1997
    [80] Larmond E. Laboratory methods for sensory evaluation of food. Research Branch Canada Department of Agriculture Publication. 1982, 24: 1637
    
    
    [81] 樊子文,猪肉的色泽。肉类研究,1997,(2):21

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