CN113754789A - 一种改善茶多酚茶多糖溶解性的方法及所制备复合物与应用 - Google Patents
一种改善茶多酚茶多糖溶解性的方法及所制备复合物与应用 Download PDFInfo
- Publication number
- CN113754789A CN113754789A CN202111151773.6A CN202111151773A CN113754789A CN 113754789 A CN113754789 A CN 113754789A CN 202111151773 A CN202111151773 A CN 202111151773A CN 113754789 A CN113754789 A CN 113754789A
- Authority
- CN
- China
- Prior art keywords
- tea
- polysaccharide
- tea polysaccharide
- polyphenol
- ptps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241001122767 Theaceae Species 0.000 title claims abstract description 112
- 229920001282 polysaccharide Polymers 0.000 title claims abstract description 87
- 239000005017 polysaccharide Substances 0.000 title claims abstract description 87
- 150000008442 polyphenolic compounds Chemical class 0.000 title claims abstract description 32
- 235000013824 polyphenols Nutrition 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 17
- 150000001875 compounds Chemical class 0.000 title claims abstract description 14
- 150000004676 glycans Chemical class 0.000 title claims abstract 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 12
- 235000013616 tea Nutrition 0.000 claims description 101
- 229920001469 poly(aryloxy)thionylphosphazene Polymers 0.000 claims description 37
- WMBWREPUVVBILR-UHFFFAOYSA-N GCG Natural products C=1C(O)=C(O)C(O)=CC=1C1OC2=CC(O)=CC(O)=C2CC1OC(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-UHFFFAOYSA-N 0.000 claims description 29
- WMBWREPUVVBILR-WIYYLYMNSA-N (-)-Epigallocatechin-3-o-gallate Chemical compound O([C@@H]1CC2=C(O)C=C(C=C2O[C@@H]1C=1C=C(O)C(O)=C(O)C=1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-WIYYLYMNSA-N 0.000 claims description 25
- 229940030275 epigallocatechin gallate Drugs 0.000 claims description 25
- XMOCLSLCDHWDHP-IUODEOHRSA-N epi-Gallocatechin Chemical compound C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@H]2O)=CC(O)=C(O)C(O)=C1 XMOCLSLCDHWDHP-IUODEOHRSA-N 0.000 claims description 20
- XMOCLSLCDHWDHP-UHFFFAOYSA-N L-Epigallocatechin Natural products OC1CC2=C(O)C=C(O)C=C2OC1C1=CC(O)=C(O)C(O)=C1 XMOCLSLCDHWDHP-UHFFFAOYSA-N 0.000 claims description 12
- DZYNKLUGCOSVKS-UHFFFAOYSA-N epigallocatechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3cc(O)c(O)c(O)c3 DZYNKLUGCOSVKS-UHFFFAOYSA-N 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 9
- 235000019224 Camellia sinensis var Qingmao Nutrition 0.000 claims description 8
- 235000020339 pu-erh tea Nutrition 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 5
- XMOCLSLCDHWDHP-SWLSCSKDSA-N (+)-Epigallocatechin Natural products C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@@H]2O)=CC(O)=C(O)C(O)=C1 XMOCLSLCDHWDHP-SWLSCSKDSA-N 0.000 claims description 4
- WMBWREPUVVBILR-GHTZIAJQSA-N (+)-gallocatechin gallate Chemical compound O([C@H]1CC2=C(O)C=C(C=C2O[C@@H]1C=1C=C(O)C(O)=C(O)C=1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-GHTZIAJQSA-N 0.000 claims description 4
- 235000013305 food Nutrition 0.000 claims description 4
- LVJJFMLUMNSUFN-UHFFFAOYSA-N gallocatechin gallate Natural products C1=C(O)C=C2OC(C=3C=C(O)C(O)=CC=3)C(O)CC2=C1OC(=O)C1=CC(O)=C(O)C(O)=C1 LVJJFMLUMNSUFN-UHFFFAOYSA-N 0.000 claims description 4
- 150000002772 monosaccharides Chemical class 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000001338 self-assembly Methods 0.000 claims description 3
- SHZGCJCMOBCMKK-UHFFFAOYSA-N D-mannomethylose Natural products CC1OC(O)C(O)C(O)C1O SHZGCJCMOBCMKK-UHFFFAOYSA-N 0.000 claims description 2
- SHZGCJCMOBCMKK-JFNONXLTSA-N L-rhamnopyranose Chemical compound C[C@@H]1OC(O)[C@H](O)[C@H](O)[C@H]1O SHZGCJCMOBCMKK-JFNONXLTSA-N 0.000 claims description 2
- PNNNRSAQSRJVSB-UHFFFAOYSA-N L-rhamnose Natural products CC(O)C(O)C(O)C(O)C=O PNNNRSAQSRJVSB-UHFFFAOYSA-N 0.000 claims description 2
- PYMYPHUHKUWMLA-WDCZJNDASA-N arabinose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)C=O PYMYPHUHKUWMLA-WDCZJNDASA-N 0.000 claims description 2
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 claims description 2
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 claims description 2
- 150000001720 carbohydrates Chemical class 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 241000894007 species Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002218 hypoglycaemic effect Effects 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract description 2
- 238000005063 solubilization Methods 0.000 abstract description 2
- 230000007928 solubilization Effects 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 229920002521 macromolecule Polymers 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 150000004804 polysaccharides Chemical class 0.000 description 62
- 239000000243 solution Substances 0.000 description 11
- 102100024295 Maltase-glucoamylase Human genes 0.000 description 8
- 108010028144 alpha-Glucosidases Proteins 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 8
- 239000008280 blood Substances 0.000 description 8
- 210000004369 blood Anatomy 0.000 description 8
- 230000001603 reducing effect Effects 0.000 description 7
- 238000004090 dissolution Methods 0.000 description 6
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 238000004108 freeze drying Methods 0.000 description 4
- 238000004128 high performance liquid chromatography Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 102000004169 proteins and genes Human genes 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000003472 antidiabetic agent Substances 0.000 description 3
- 238000000502 dialysis Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XUFXOAAUWZOOIT-SXARVLRPSA-N (2R,3R,4R,5S,6R)-5-[[(2R,3R,4R,5S,6R)-5-[[(2R,3R,4S,5S,6R)-3,4-dihydroxy-6-methyl-5-[[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)-1-cyclohex-2-enyl]amino]-2-oxanyl]oxy]-3,4-dihydroxy-6-(hydroxymethyl)-2-oxanyl]oxy]-6-(hydroxymethyl)oxane-2,3,4-triol Chemical compound O([C@H]1O[C@H](CO)[C@H]([C@@H]([C@H]1O)O)O[C@H]1O[C@@H]([C@H]([C@H](O)[C@H]1O)N[C@@H]1[C@@H]([C@@H](O)[C@H](O)C(CO)=C1)O)C)[C@@H]1[C@@H](CO)O[C@@H](O)[C@H](O)[C@H]1O XUFXOAAUWZOOIT-SXARVLRPSA-N 0.000 description 2
- 229920005654 Sephadex Polymers 0.000 description 2
- 239000012507 Sephadex™ Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229960002632 acarbose Drugs 0.000 description 2
- XUFXOAAUWZOOIT-UHFFFAOYSA-N acarviostatin I01 Natural products OC1C(O)C(NC2C(C(O)C(O)C(CO)=C2)O)C(C)OC1OC(C(C1O)O)C(CO)OC1OC1C(CO)OC(O)C(O)C1O XUFXOAAUWZOOIT-UHFFFAOYSA-N 0.000 description 2
- 230000004071 biological effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229940126904 hypoglycaemic agent Drugs 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 2
- 229920001542 oligosaccharide Polymers 0.000 description 2
- 150000002482 oligosaccharides Chemical class 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- 238000002211 ultraviolet spectrum Methods 0.000 description 2
- 241000037488 Coccoloba pubescens Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 102000003886 Glycoproteins Human genes 0.000 description 1
- 108090000288 Glycoproteins Proteins 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920001284 acidic polysaccharide Polymers 0.000 description 1
- 150000004805 acidic polysaccharides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000023852 carbohydrate metabolic process Effects 0.000 description 1
- 235000021256 carbohydrate metabolism Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- -1 compound polysaccharide Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000015091 medicinal tea Nutrition 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 235000017807 phytochemicals Nutrition 0.000 description 1
- 229930000223 plant secondary metabolite Natural products 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 230000003381 solubilizing effect Effects 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0003—General processes for their isolation or fractionation, e.g. purification or extraction from biomass
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/105—Plant extracts, their artificial duplicates or their derivatives
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/125—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives containing carbohydrate syrups; containing sugars; containing sugar alcohols; containing starch hydrolysates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
- A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
- A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Diabetes (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mycology (AREA)
- Nutrition Science (AREA)
- Pharmacology & Pharmacy (AREA)
- Biochemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Food Science & Technology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Obesity (AREA)
- Epidemiology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Hematology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Endocrinology (AREA)
- Emergency Medicine (AREA)
- Sustainable Development (AREA)
- Botany (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
本发明涉及一种改善茶多酚茶多糖溶解性的方法及所制备复合物与应用,属于植物化学技术领域,本发明首次从普洱熟茶中分离纯化得到一种茶多糖,该化合物结构新颖,具有生物活性,尤其是较好的降糖活性,为进一步研究药用茶多糖提供重要的启示,可用于降糖药物的研发制备。本发明还提供了茶多酚改善高聚茶多糖溶解性的方法,通过多糖‑多酚的相互作用,使高聚茶多糖与多酚类物质在水溶液中自组装形成稳定的大分子复合物,以显著提高高聚茶多糖的溶解性。本发明所提供的茶多糖的增溶方法工艺简单,操作方便,实际应用效果优异,通过茶多糖与茶多酚复配形成的复合物具有显著的协同降糖作用。
Description
技术领域
本发明涉及植物化学功能性成分的溶解技术领域,更具体地,涉及一种茶多糖的提取纯化与改善茶多酚茶多糖溶解性的方法。
背景技术
普洱茶以云南特色大叶茶种制作的特殊茶类。普洱茶中含有大量的茶多糖,是茶汤的主要滋味物质之一。在茶叶中茶多糖含量在6%左右,其组成复杂,属于杂多糖复合物,由糖类、蛋白质和果胶等物质所组成,是具有生物活性的复合多糖。
现代研究表明,茶多糖具有降脂减肥、降血压、调节免疫、抗癌等作用。茶叶中的多糖有中性多糖、酸性多糖两种,而且往往是与蛋白质紧密结合的糖蛋白复合物。目前已经通过动物体内模型试验证明茶多糖确有降血糖作用,主要是通过茶多糖实现清除自由基调节糖类代谢过程中关键酶活性来调节血糖水平减缓胃的倒空速度,减少葡萄糖的吸收。因此茶多糖的研究也越来越引起人们的关注。但是提取出的普洱茶多糖尤其是高聚茶多糖的水溶性差,进而影响茶多糖降糖效果。随着人们对自身健康的日益关注,研究和开发天然降血糖剂以取代化学合成的降血糖剂已是大势所趋。综上所述,如何克服高聚茶多糖难溶的技术难题是本领域技术人员亟需解决的关键技术问题。
发明内容
为了克服背景技术中存在的问题,本发明提供了一种高聚茶多糖提取纯化及增溶方法,从普洱茶中提取到一种茶多糖,将其与EGCG混合,建立一种自组装复合物。通过对α-葡萄糖苷酶的抑制活性实验,发现PTPs-EGCG复合物比EGCG提高了1.1倍,PTPs-EGCG复合物比PTPs提高了7.8倍,具有较好的降糖作用。
下述的技术方案是用来实现上述的发明目的:
本发明提供的茶多糖是从云南大叶种普洱茶中分离得到的新的多糖,属于一种均一多糖,该多糖分子量≈4.59 KDa,单糖构成为鼠李糖:阿拉伯糖 = 1:7,PTPs的骨架由6个→2)-α-L-Arap-(3→为主链和1个β-L-Rhap-(3→1)-α-L-Arap的重复单元组成,其具有如下结构:
该化合物命名为PTPs,其分子式为C41H82O40。
所述茶多糖的制备方法,具体包括以下步骤:
1)普洱茶叶阴干后粉碎,过筛(40目)作为原料;
2)将步骤1)放入热水萃取器中,加入超纯水,在85℃下萃取2小时,不溶物过滤后得到水萃取物,蒸发浓缩;
3)将步骤2)所得到的浓缩液用95%的乙醇沉淀,在剧烈搅拌下最终浓度为70%;室温静置过夜,离心(4000 r/min, 15 min, 0℃),得到沉淀;用热水(80℃)重新溶解沉淀物并冷却至室温;
4)将步骤3)所得到溶液用Sevag试剂(正丁醇/氯仿1:4,V/V)洗涤去蛋白;最后,通过浓缩和冷冻干燥得到粗茶多糖;
5)将步骤4)所得到粗茶多糖使用DEAE-52柱纯化茶多糖中,用纯水清洗柱,收集洗脱液浓缩;用透析袋去除杂质如单糖和寡糖,冷冻干燥得到白色絮状物;
6)将步骤5)所得到白色絮状物,使用Sephadex G-100柱进一步纯化,用恒流泵和纯化水洗脱,将洗脱液收集,冷冻干燥得到纯化的茶多糖。
作为优选,步骤2)中,原料与水的质量比为1:15。
作为优选,步骤5)中,DEAE-52柱选择2.9厘米×50厘米,透析袋为 7000 Da。
作为优选,步骤6)中,DEAE-52柱选择2.9厘米×100厘米。
本发明还提供了一种茶多酚改善茶多糖溶解性方法,:将茶多糖与多酚建立自组装复合物,进而改善茶多糖的溶解性。具体包括以下步骤:向茶多糖水溶液中加入茶多酚类物质,混合搅拌均匀,即可。
进一步地,茶多糖为高聚茶多糖或上述结构的茶多糖;茶多酚类物质包含没食子儿茶素(EC)、没食子儿茶素没食子酸酯(ECG)、表没食子儿茶素(EGC)、表没食子儿茶素没食子酸酯(EGCG)中的一种或多种。
进一步地,茶多糖与茶多酚类物质的摩尔质量比为1:1。
20℃水溶液中茶多糖的溶解时间可从214 s提高到150 s。
本发明还提供了一种茶多糖-多酚复合物,茶多糖与茶多酚类物质的摩尔质量比为1:1。
进一步地,茶多糖为高聚茶多糖或上述结构的茶多糖;茶多酚类物质包含没食子儿茶素(EC)、没食子儿茶素没食子酸酯(ECG)、表没食子儿茶素(EGC)、表没食子儿茶素没食子酸酯(EGCG)中的一种或多种。
本发明还提供了上述茶多糖-多酚复合物在制备降糖降脂类食品或药物中的应用。
本发明的有益效果:
(1)本发明首次从普洱熟茶中分离纯化得到一种茶多糖,该化合物结构新颖,具有较好的降糖作用,为进一步研究药用茶多糖提供重要的启示,可用于降糖药物的研发制备。
(2)本发明所提供的茶多糖的增溶方法通过加入多酚类物质,通过多糖-多酚的相互作用,在茶多糖与茶多酚类物质的摩尔质量比为1:1的条件下,使高聚茶多糖与多酚类物质在水溶液中形成稳定的复合物,使其溶解时间提高了。20℃水溶液中茶多糖的溶解时间可从214 s提高到150 s。
(3)本发明所提供的茶多糖-多酚复合物可应用于制备降糖类食品或药物。
附图说明
图1是茶多糖PTPs的结构式。
图2是PTPs纯品HPLC图谱。
图3是PTPs纯品PMP-HPLC图谱。
图4是PTPs纯品IR图谱。
图5是PTPs纯品UV图谱。
图6是PTPs纯品NMR图谱。
图7是25℃下将800 μM PTPs滴定到800 μM EGCG的ITC图。
图8是PTPs纯品(a)与PTPs-EGCG(b)溶于水中的自组装透射电镜图谱。
图9是PTPs纯品与EGCG互溶增加溶解度;(a)EGCG, PTPs和PTPs-EGCG的ζ电位,(b)PTPs和PTPs-EGCG的溶解度。
图10是PTPs纯品与EGCG互溶增加复合物的分散性。
图11是PTPs-EGCG对α-葡萄糖苷酶的抑制活性测试。
具体实施方式
为了使本发明的目的、技术方案和有益效果更加清楚,下面将对本发明的优选实施例进行详细的说明,以方便技术人员理解。
实施例1:茶多糖PTPs的制备方法
茶多糖PTPs的制备方法包括以下步骤:将阴干的1 kg大叶种普洱茶叶粉碎,过40目筛作为原料;放入热水萃取器中,所得原料用8倍量(质量比)的超纯水在85℃下萃取2小时,反复提取三次,不溶物过滤后得到水萃取物,蒸发浓缩,得到浓缩液500 mL。所得到的浓缩液用95%的乙醇沉淀,在剧烈搅拌下最终浓度为70%。室温静置过夜,离心(4000 r/min,15 min, 0℃),得到沉淀。用热水(80℃)重新溶解沉淀物并冷却至室温。所得到溶液用Sevag试剂(正丁醇/氯仿1:4,V/V)多次洗涤,去除蛋白。最后,通过浓缩和冷冻干燥得到粗茶多糖。粗茶多糖使用DEAE-52柱(2.9 cm×50 cm)纯化茶多糖,用纯水清洗柱,收集洗脱液浓缩。用透析袋透析(7000 Da)去除杂质如单糖和寡糖,冷冻干燥得到白色絮状物。所得到白色絮状物,使用Sephadex G-100柱(2.9 cm×100 cm)进一步纯化,用恒流泵和纯化水以0.6 mL/min的流速洗脱,洗脱液(3 mL/管)自动收集,冷冻干燥得到纯化的茶多糖PTPs。
如图1所示为纯化茶多糖PTPs的结构。如图2所示为PTPs纯品HPLC图谱。如图3所示为PTPs纯品PMP-HPLC图谱。如图4所示为PTPs纯品IR图谱。如图5所示为PTPs纯品UV图谱。如图6所示为PTPs纯品NMR图谱。
实施例2:茶多酚改善高聚茶多糖的测试
采用实施例1方法获得的茶多糖PTPs纯品与茶多酚EGCG作为实验材料,所用茶多酚为实验室自提。
配置浓度为1 mM的纯化茶多糖水溶液和PTPs-EGCG水溶液(摩尔比为1:1,见图7),采用透射电镜观察其在水溶液中的存在形态。
结果如图8所示,从图8(a)可以看出,纯化茶多糖在水中溶解效果不佳,分散不均匀;其难溶于水的特征造成其很难应用于制备降糖降脂类食品药物中。结果如图8(b)所示,从图8(b)中可以看出,PTPs与EGCG摩尔比1:1配制,PTPs-EGCG形成了稳定的纳米微粒,分散均匀。
结果如图9所示,PTPs-EGCG溶液电位值低于PTPs溶液电位,1 mg/mLPTPs溶液电位是-17.8 mV, 1 mg/mL EGCG溶液电位是-33.4 mV,而1 mg/mLPTPs-EGCG混合物电位是-29.7 mV。当EGCG中加入PTPs中,电位增大,电位绝对值(正负)越高,体系越稳定,溶解度提高。
结果如图10所示,EGCG的粒径为110.29 nm;PTPs的粒径为241.53 nm;当EGCG加入到PTPs中时,PTPs-EGCG复合物的粒径减小到134.17 nm,说明EGCG能有效抑制PTPs的自聚合,形成PTPs-EGCG复合物。
实施例3:PTPs-EGCG对α-葡萄糖苷酶抑制活性测试
以pNPG为底物,阿卡波糖为阳性对照,EGCG,PTPs,PTPs-EGCG为实验组进行α-葡萄糖苷酶的抑制活性的实验。取50 μL PBS,50 μL α-葡萄糖苷酶(0.5 U/mL)和50 μL不同浓度(0,12.5,25,50,100,200 μM)的EGCG、PTPs和PTPs-EGCG及阿卡波糖(5,10,20,40,80 μM),37℃孵育15 min。然后再添加50 μL的pNPG溶液(6 mM),37℃孵育15 min。最后加50 μL的Na2CO3(0.2 M)终止反应,并在405 nm下测量吸光度。重复实验3次。α-葡萄糖苷酶的抑制活性公式如下:
结果如图11所示,在体外条件下,与EGCG相比,PTPs-EGCG的比例(摩尔比,μM)在12.5:12.5,25:25,50:50,100:100时其α-葡萄糖苷酶的抑制活性要高于EGCG的抑制活性。而单独使用PTPs时,α-葡萄糖苷酶的抑制活性较差。表明PTPs-EGCG可有效的抑制α-葡萄糖苷酶的活性。
本发明首次从普洱茶叶中分离、纯化和鉴定得到一种高聚茶多糖,该化合物结构新颖,具有多种生物活性,尤其是较好的降糖作用,为进一步研究在制备降糖降脂类食品药物提供重要的启示,可用于降糖药物的研发制备。本发明制备方法简单,制备成本较低,应用情景广阔。
最后说明的是,以上优选实施例仅用于说明本发明的技术方案而非限制,尽管通过上述优选实施例已经对本发明进行了详细的描述,但本领域技术人员应当理解,可以在形式上和细节上对其作出各种各样的改变,而不偏离本发明权利要求书所限定的范围。
Claims (9)
2.如权利要求1所述的一种茶多糖,其特征在于:该茶多糖是从云南大叶种普洱茶叶中分离得到的新的多糖。
3.一种改善茶多糖-茶多酚溶解性的方法,其特征在于:将茶多糖与多酚建立自组装复合物,进而改善茶多糖的溶解性。
4.如权利要求3所述的一种改善茶多糖-茶多酚溶解性的方法,其特征在于:向茶多糖水溶液中加入茶多酚类物质,混合搅拌均匀。
5.根据权利要求3或4所述的一种改善茶多糖-茶多酚溶解性的方法,其特征在于:所述茶多糖为高聚茶多糖或如权利要求1所述的茶多糖;所述茶多酚类物质包含没食子儿茶素(EC)、没食子儿茶素没食子酸酯(ECG)、表没食子儿茶素(EGC)、表没食子儿茶素没食子酸酯(EGCG)中的一种或多种。
6.根据权利要求3-5任一项所述的一种改善茶多糖-茶多酚溶解性的方法,其特征在于:茶多糖与茶多酚类物质的摩尔质量比为1:1。
7.一种茶多糖-多酚复合物,其特征在于:茶多糖与茶多酚类物质的摩尔质量比为1:1。
8.根据权利要求8所述的一种茶多糖-多酚复合物,其特征在于:所述茶多糖为高聚茶多糖或如权利要求1所述的茶多糖;所述茶多酚类物质包含没食子儿茶素(EC)、没食子儿茶素没食子酸酯(ECG)、表没食子儿茶素(EGC)、表没食子儿茶素没食子酸酯(EGCG)中的一种或多种。
9.如权利要求7或8所述的茶多糖-多酚复合物在制备降糖类食品或药物中的应用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111151773.6A CN113754789A (zh) | 2021-09-29 | 2021-09-29 | 一种改善茶多酚茶多糖溶解性的方法及所制备复合物与应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202111151773.6A CN113754789A (zh) | 2021-09-29 | 2021-09-29 | 一种改善茶多酚茶多糖溶解性的方法及所制备复合物与应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113754789A true CN113754789A (zh) | 2021-12-07 |
Family
ID=78798301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202111151773.6A Pending CN113754789A (zh) | 2021-09-29 | 2021-09-29 | 一种改善茶多酚茶多糖溶解性的方法及所制备复合物与应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113754789A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116649563A (zh) * | 2023-06-19 | 2023-08-29 | 浙江大学长三角智慧绿洲创新中心 | 一种用于分散灵芝粉的食品添加剂和灵芝粉快速分散方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101953506A (zh) * | 2010-05-28 | 2011-01-26 | 西南大学 | β-葡聚糖-茶多酚复合物及其应用 |
CN104311687A (zh) * | 2014-11-05 | 2015-01-28 | 天津工业大学 | 一种普洱茶多糖的提取及纯化方法 |
CN109329500A (zh) * | 2018-09-26 | 2019-02-15 | 陕西师范大学 | 一种茯砖茶多酚和多糖的复合速溶茶及其制备方法和应用 |
-
2021
- 2021-09-29 CN CN202111151773.6A patent/CN113754789A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101953506A (zh) * | 2010-05-28 | 2011-01-26 | 西南大学 | β-葡聚糖-茶多酚复合物及其应用 |
CN104311687A (zh) * | 2014-11-05 | 2015-01-28 | 天津工业大学 | 一种普洱茶多糖的提取及纯化方法 |
CN109329500A (zh) * | 2018-09-26 | 2019-02-15 | 陕西师范大学 | 一种茯砖茶多酚和多糖的复合速溶茶及其制备方法和应用 |
Non-Patent Citations (1)
Title |
---|
周斌星等: ""普洱茶多糖的提取及降血糖的研究"", 《中国农学通报》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116649563A (zh) * | 2023-06-19 | 2023-08-29 | 浙江大学长三角智慧绿洲创新中心 | 一种用于分散灵芝粉的食品添加剂和灵芝粉快速分散方法 |
CN116649563B (zh) * | 2023-06-19 | 2024-05-28 | 浙江大学长三角智慧绿洲创新中心 | 一种用于分散灵芝粉的食品添加剂和灵芝粉快速分散方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3259758B2 (ja) | 飲食物およびその製造方法 | |
Xiao et al. | A review on the structure-function relationship aspect of polysaccharides from tea materials | |
CN110101728B (zh) | 基于胶束介质处理的马齿苋多糖及总黄酮联合提取方法 | |
CA2412600A1 (en) | Potent immunostimulatory polysaccharides extracted from microalgae | |
CN108047343B (zh) | 伊贝母总多糖的制备方法及其应用 | |
CN110606900B (zh) | 一种具有抗氧化作用的木枣多糖的分离纯化方法 | |
CN110790848A (zh) | 沙棘总多糖的制备方法及其应用 | |
CN113754789A (zh) | 一种改善茶多酚茶多糖溶解性的方法及所制备复合物与应用 | |
CN113925081A (zh) | 一种天然植物防腐组合物、制备方法及其应用 | |
CN116925163A (zh) | 一种低频超声获取玫瑰苷的方法 | |
EP3235808A1 (en) | Modified taurine, and pharmaceutical composition for preventing or treating metabolic diseases containing same | |
CN117209617A (zh) | 一种阿拉伯糖半乳糖醛酸聚糖及其制备方法和应用 | |
CN115844937A (zh) | 一种解酒护脑功能的苦苣菜提取物的制备方法及应用 | |
CN108864236A (zh) | 一种1,2,3,4,6-o-五没食子酰葡萄糖锗络合物及其制备方法和应用 | |
CN115028753A (zh) | 具有抗肿瘤功效的沙棘均一多糖及其分离纯化方法及应用 | |
KR102290859B1 (ko) | 사포닌과 고순도의 산성다당체를 함유하는 홍삼 추출물, 그 제조방법 및 이를 포함하는 건강기능성 식품 | |
CN110974849B (zh) | 一种具有降血糖活性的复合海参提取物及制备方法与应用 | |
CN106692257A (zh) | 一种果胶组合物、制备方法及其用途 | |
CN112220776A (zh) | 一种鹰嘴豆皂苷微胶囊及其制备方法和用途 | |
CN112159484A (zh) | 一种抗凝血流苏子多糖及其提取分离方法和应用 | |
CN110317844A (zh) | 一种具有抗肿瘤活性的亚麻籽胶低聚糖及其制备方法和用途 | |
CN110467685B (zh) | 一种香椿子多糖的制备、纯化方法及其应用 | |
CN113603808B (zh) | 改性褐藻胶及制备方法与其在制备促进胃肠蠕动药物中的应用 | |
CN109400731A (zh) | 一种冷水溶性黄芪多糖及其制备方法及其体外抗肿瘤应用 | |
CN109096410A (zh) | 白花蛇舌草多糖在制备肠道菌群调节药物中的应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211207 |
|
RJ01 | Rejection of invention patent application after publication |