CN106539848A - 一种甜柿黄酮的制备方法 - Google Patents
一种甜柿黄酮的制备方法 Download PDFInfo
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- 244000236655 Diospyros kaki Species 0.000 title claims abstract description 55
- 229930003944 flavone Natural products 0.000 title claims abstract description 52
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- 150000002212 flavone derivatives Chemical class 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 58
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 56
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
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- IVTMALDHFAHOGL-UHFFFAOYSA-N eriodictyol 7-O-rutinoside Natural products OC1C(O)C(O)C(C)OC1OCC1C(O)C(O)C(O)C(OC=2C=C3C(C(C(O)=C(O3)C=3C=C(O)C(O)=CC=3)=O)=C(O)C=2)O1 IVTMALDHFAHOGL-UHFFFAOYSA-N 0.000 description 6
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- IKGXIBQEEMLURG-BKUODXTLSA-N rutin Chemical compound O[C@H]1[C@H](O)[C@@H](O)[C@H](C)O[C@@H]1OC[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](OC=2C(C3=C(O)C=C(O)C=C3OC=2C=2C=C(O)C(O)=CC=2)=O)O1 IKGXIBQEEMLURG-BKUODXTLSA-N 0.000 description 6
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- 239000000126 substance Substances 0.000 description 3
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- MQVRGDZCYDEQML-UHFFFAOYSA-N Astragalin Natural products C1=CC(OC)=CC=C1C1=C(OC2C(C(O)C(O)C(CO)O2)O)C(=O)C2=C(O)C=C(O)C=C2O1 MQVRGDZCYDEQML-UHFFFAOYSA-N 0.000 description 1
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- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
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- JPUKWEQWGBDDQB-QSOFNFLRSA-N kaempferol 3-O-beta-D-glucoside Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=C(C=2C=CC(O)=CC=2)OC2=CC(O)=CC(O)=C2C1=O JPUKWEQWGBDDQB-QSOFNFLRSA-N 0.000 description 1
- ZDQHCVFHPTWFMA-UHFFFAOYSA-N kaempferol 3-O-beta-D-glucoside Natural products OCC1OC(OC2=C(Oc3cc(O)cc(O)c3C2)c4ccc(O)c(O)c4)C(O)C(O)C1O ZDQHCVFHPTWFMA-UHFFFAOYSA-N 0.000 description 1
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- UNIPFWRTGHROAD-UHFFFAOYSA-N phenol 2-phenylchromen-4-one Chemical compound OC1=CC=CC=C1.O1C2=CC=CC=C2C(=O)C=C1C1=CC=CC=C1 UNIPFWRTGHROAD-UHFFFAOYSA-N 0.000 description 1
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- A61K36/18—Magnoliophyta (angiosperms)
- A61K36/185—Magnoliopsida (dicotyledons)
- A61K36/44—Ebenaceae (Ebony family), e.g. persimmon
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Abstract
本发明公开了甜柿黄酮及其制备方法,具体包括提取、富集和精制三个步骤。甜柿叶粉碎,经60~85%乙醇溶液提取,提取液过滤,滤液浓缩得浸膏;浸膏加水搅拌混悬,用碱调节至碱性(pH=9.5~11)后,过滤,用乙酸乙酯萃取,水液再用酸调节至酸性(pH=3~5),再用乙酸乙酯萃取,浓缩,得甜柿黄酮粗品;取甜柿黄酮,加水溶解,通过MCI GEL(75~150μm),先用水洗脱,再用40~60%乙醇洗脱,收集该部分洗脱液,浓缩,干燥,得甜柿黄酮精品。本发明以甜柿叶为原料深加食用黄酮,纯度高,操作简便,适用于工业化生产。
Description
技术领域
本发明属于医药及食品技术领域,具体涉及一种从甜柿叶制备甜柿黄酮及其制备方法。
背景技术
甜柿(Diospyros Kaki)叶富含黄酮类P族维生素,具有软化血管、增加血管通透性、活血化瘀等功效,是制备药物及保健食品的重要原料,还因其具有显著抗菌及抗氧化活性而广泛应用于食品添加剂中。目前柿叶黄酮的制备主要有萃取法、吸附法。两者均只能针对部分杂质的去除,所得总黄酮含量不高。本发明采用两种方法结合,利用黄酮酚酸结构性质,在碱性条件下呈离子状态,不能被乙酸乙酯萃取而去除中性、碱性物质,再在酸性条件下由乙酸乙酯萃取得到总黄酮粗品;总黄酮粗品经过MCI GEL树脂吸附,用水洗脱除去大极性有机酸后,再用50%乙醇洗脱下中等极性的黄酮,浓缩干燥得到甜柿黄酮精品。该方法简便易操作,所得总黄酮含量高,应用于医药、保健食品及食品添加剂行业具有巨大经济前景。
发明内容
本发明的目的在于提供一种甜柿黄酮的制备方法。
本发明通过如下方法实现:所述的甜柿黄酮制备方法是以甜柿叶为原料,经提取、富集、精制得到,具体包括:
A、提取:取甜柿叶,粉碎,加入4~7倍量(V/W)60~85%乙醇溶液,加热回流提取2~5次,每次1~3小时,提取液过滤,滤液浓缩,得浸膏;
B、富集:取柿叶浸膏,加入3~6倍水(V/W),搅拌混悬,加入3%~7%%浸膏量的活性炭,搅拌,静置1~4小时,过滤,滤液用20%氢氧化钠溶液调节至碱性(pH=9.5~11),再用三分之一水液体积量的乙酸乙酯萃取三次,水层用10~20%盐酸溶液调节至酸性(pH=3~4),再用三分之一水液体积量的乙酸乙酯萃取三次,合并此次乙酸乙酯萃取液,浓缩,得甜柿叶黄酮粗品。
C、精制:取甜柿叶黄酮粗品,加15~30倍水溶解,用MCI GEL树脂(75~150um)吸附,先用2~5倍柱体积水洗脱,再用3~6倍柱体积40%~60%乙醇洗脱,收集乙醇洗脱液,浓缩,干燥,得甜柿黄酮精品。
本发明的有益效果在于:
本发明以甜柿叶为原料制备天然来源黄酮应用于药品、食品等领域,操作简便;制备过程中首先用活性炭吸附去除大部分叶绿素等脂溶性成分,再利用黄酮酚酸性性质,在碱性条件下呈离子态,不能被乙酸乙酯萃取,从而除去碱性及中性成分,再利用其在酸性条件下呈游离态可以被乙酸乙酯萃取,得到粗品黄酮;粗品黄酮通过大孔吸附树脂去除有机酸、单糖等大极性成分,最后用50%乙醇洗脱下黄酮成分,从而选择性获得甜柿叶中的高含量黄酮(研究表明甜柿叶中大极性及小极性黄酮非常微量)。该工艺所得天然黄酮可以满足医药、保健品、食品及化妆品行业原料的需求,具有良好的市场前景和竞争力。
具体实施方式
为使本领域技术人员详细了解本发明的生产工艺和技术效果,下面以具体的生产实例来进一步介绍本发明的应用和技术效果,以下实施例为对本发明的说明而不是限定。
本发明所述的方法是以甜柿叶为原料,经提取、富集、精制步骤得到,具体包括:
A、提取:取甜柿叶,粉碎,加入4~7倍量(V/W)60~85%乙醇溶液,加热回流提取2~5次,每次1~3小时,提取液过滤,滤液浓缩,得浸膏;
B、富集:取柿叶浸膏,加入3~6倍水(V/W),搅拌混悬,加入3%~7%浸膏量的活性炭,搅拌,静置1~4小时,过滤,滤液用20%氢氧化钠溶液调节至碱性(pH=9.5~11),再用三分之一水液体积量的乙酸乙酯萃取三次,水层用10~20%盐酸溶液调节至酸性(pH=3~4),再用三分之一水液体积量的乙酸乙酯萃取三次,合并此次乙酸乙酯萃取液,浓缩,得甜柿叶黄酮粗品。
C、精制:取甜柿叶黄酮粗品,加15~30倍水溶解,用MCI GEL树脂(75~150um)吸附,先用2~5倍柱体积水洗脱,再用3~6倍柱体积40%~60%乙醇洗脱,收集乙醇洗脱液,浓缩,干燥,得甜柿黄酮精品。
本发明的方法制备的甜柿黄酮精品含总黄酮不少于75%,且其含山奈酚-3-O-β-D-葡萄糖苷不少于10%、山奈酚-3-O-β-D-半乳糖苷不少于5%、槲皮素-3-O-β-D-葡萄糖苷20%。
实施例1:
取甜柿叶50 kg,粉碎成粗粉,加入75%乙醇溶液250L,加热回流提取2次,每次2小时,提取液过滤,滤液浓缩,得浸膏11.2公斤;浸膏中加入67L水,搅拌混悬,加入3.4公斤活性炭,搅拌,静置2小时,过滤,滤液用20%氢氧化钠溶液调节至碱性(pH=10),再用乙酸乙酯萃取三次,每次23L(回收乙酸乙酯,残渣弃去);水层用15%盐酸溶液调节至酸性(pH=3.5),再用乙酸乙酯萃取三次(每次23L),合并乙酸乙酯萃取液,浓缩,得甜柿叶黄酮粗品2.22kg。取甜柿叶黄酮粗品,加44L水,使溶解,用MCI GEL树脂(75~150μm)吸附(20L),先用42L水洗脱(3倍柱体积),再用50%乙醇70L洗脱(5倍柱体积),收集乙醇洗脱液,浓缩,干燥,得甜柿黄酮精品1.78kg。
甜柿黄酮含量测定:
(1)紫外法测定(UV)
测定波长:254nm
对照品溶液制备 精密称取芦丁对照品适量,加75%乙醇配制成50ug/ml的溶液。
供试品溶液制备 精密称取本品适量,加75%乙醇配制成50ug/ml的溶液。
测定:分别取对照品溶液和供试品溶液测定,即得。
结果:本品含黄酮以芦丁计为83.32%。
(2)高效液相法测定(HPLC)
色谱条件与系统适用性试验 以十八烷基硅烷键合硅胶为填充剂;以0.4%磷酸溶液为流动相A,甲醇为流动性B;按下表中的规定进行梯度洗脱;流速每分钟为1.2ml;检测波长为265nm;柱温30℃。
时间程序见下表
对照品溶液的制备 精密称取山奈酚-3-O-β-D-葡萄糖苷、山奈酚-3-O-β-D-半乳糖苷、槲皮素-3-O-β-D-葡萄糖苷适量,加甲醇制成每1ml含45μg、20μg、50μg的混合溶液,即得。
供试品溶液制备 取本品粉末25mg,精密称定,置25ml量瓶中,加甲醇20ml,超声处理使溶解,加甲醇稀释至刻度,摇匀,取5ml置于50ml量瓶中,加甲醇稀释至刻度,摇匀,用0.45μm的微孔滤膜滤过,取续滤液,即得。
测定:分别取对照品溶液和供试品溶液各10ul注入色谱仪,测定即得。
结果:本品含山奈酚-3-O-β-D-葡萄糖苷、山奈酚-3-O-β-D-半乳糖苷、槲皮素-3-O-β-D-葡萄糖苷分别为13.24%、7.12%、24.55%。
实施例2:
取甜柿叶60 kg,粉碎成粗粉,加入85%乙醇溶液280L,加热回流提取5次,每次3小时,提取液过滤,滤液浓缩,得浸膏13.4公斤;浸膏中加入75L水,搅拌混悬,加入4.1公斤活性炭,搅拌,静置2小时,过滤,滤液用20%氢氧化钠溶液调节至碱性(pH=11),再用乙酸乙酯萃取三次,每次35L(回收乙酸乙酯,残渣弃去);水层用20%盐酸溶液调节至酸性(pH=4),再用乙酸乙酯萃取三次(每次26L),合并乙酸乙酯萃取液,浓缩,得甜柿叶黄酮粗品2.85kg。取甜柿叶黄酮粗品,加50L水,使溶解,用MCI GEL树脂(75~150μm)吸附(20L),先用60L水洗脱(5倍柱体积),再用60%乙醇84L洗脱(6倍柱体积),收集乙醇洗脱液,浓缩,干燥,得甜柿黄酮精品1.67kg。
甜柿黄酮含量测定:
(1)紫外法测定(UV)
测定波长:254nm
对照品溶液制备 精密称取芦丁对照品适量,加75%乙醇配制成50ug/ml的溶液。
供试品溶液制备 精密称取本品适量,加75%乙醇配制成50ug/ml的溶液。
测定:分别取对照品溶液和供试品溶液测定,即得。
结果:本品含黄酮以芦丁计为80.11%。
(2)高效液相法测定(HPLC)
色谱条件与系统适用性试验 以十八烷基硅烷键合硅胶为填充剂;以0.4%磷酸溶液为流动相A,甲醇为流动性B;按下表中的规定进行梯度洗脱;流速每分钟为1.2ml;检测波长为265nm;柱温30℃。
时间程序见下表
对照品溶液的制备 精密称取山奈酚-3-O-β-D-葡萄糖苷、山奈酚-3-O-β-D-半乳糖苷、槲皮素-3-O-β-D-葡萄糖苷适量,加甲醇制成每1ml含45μg、20μg、50μg的混合溶液,即得。
供试品溶液制备 取本品粉末25mg,精密称定,置25ml量瓶中,加甲醇20ml,超声处理使溶解,加甲醇稀释至刻度,摇匀,取5ml置于50ml量瓶中,加甲醇稀释至刻度,摇匀,用0.45μm的微孔滤膜滤过,取续滤液,即得。
测定:分别取对照品溶液和供试品溶液各10ul注入色谱仪,测定即得。
结果:本品含山奈酚-3-O-β-D-葡萄糖苷、山奈酚-3-O-β-D-半乳糖苷、槲皮素-3-O-β-D-葡萄糖苷分别为13.01%、6.88%、23.68%。
实施例3:
取甜柿叶45 kg,粉碎成粗粉,加入60%乙醇溶液220L,加热回流提取3次,每次1小时,提取液过滤,滤液浓缩,得浸膏9.3公斤;浸膏中加入30L水,搅拌混悬,加入2.1公斤活性炭,搅拌,静置1小时,过滤,滤液用20%氢氧化钠溶液调节至碱性(pH=9.5),再用乙酸乙酯萃取三次,每次11L(回收乙酸乙酯,残渣弃去);水层用10%盐酸溶液调节至酸性(pH=3),再用乙酸乙酯萃取三次(每次11L),合并乙酸乙酯萃取液,浓缩,得甜柿叶黄酮粗品1.52kg。取甜柿叶黄酮粗品,加30L水,使溶解,用MCI GEL树脂(75~150μm)吸附(20L),先用28L水洗脱(2倍柱体积),再用40%乙醇42L洗脱(3倍柱体积),收集乙醇洗脱液,浓缩,干燥,得甜柿黄酮精品1.05kg。
甜柿黄酮含量测定:
(1)紫外法测定(UV)
测定波长:254nm
对照品溶液制备 精密称取芦丁对照品适量,加75%乙醇配制成50ug/ml的溶液。
供试品溶液制备 精密称取本品适量,加75%乙醇配制成50ug/ml的溶液。
测定:分别取对照品溶液和供试品溶液测定,即得。
结果:本品含黄酮以芦丁计为78.25%。
(2)高效液相法测定(HPLC)
色谱条件与系统适用性试验 以十八烷基硅烷键合硅胶为填充剂;以0.4%磷酸溶液为流动相A,甲醇为流动性B;按下表中的规定进行梯度洗脱;流速每分钟为1.2ml;检测波长为265nm;柱温30℃。
时间程序见下表
对照品溶液的制备 精密称取山奈酚-3-O-β-D-葡萄糖苷、山奈酚-3-O-β-D-半乳糖苷、槲皮素-3-O-β-D-葡萄糖苷适量,加甲醇制成每1ml含45μg、20μg、50μg的混合溶液,即得。
供试品溶液制备 取本品粉末25mg,精密称定,置25ml量瓶中,加甲醇20ml,超声处理使溶解,加甲醇稀释至刻度,摇匀,取5ml置于50ml量瓶中,加甲醇稀释至刻度,摇匀,用0.45μm的微孔滤膜滤过,取续滤液,即得。
测定:分别取对照品溶液和供试品溶液各10ul注入色谱仪,测定即得。
结果:本品含山奈酚-3-O-β-D-葡萄糖苷、山奈酚-3-O-β-D-半乳糖苷、槲皮素-3-O-β-D-葡萄糖苷分别为11.24%、6.45%、22.69%。
Claims (2)
1.一种甜柿黄酮的制备方法,其特征在于以甜柿叶为原料,经提取、富集、精制步骤得到,具体包括:
A、提取:取甜柿叶,粉碎,加入4~7倍量(V/W)60~85%乙醇溶液,加热回流提取2~5次,每次1~3小时,提取液过滤,滤液浓缩,得浸膏;
B、富集:取柿叶浸膏,加入3~6倍水(V/W),搅拌混悬,加入3%~7%浸膏量的活性炭,搅拌,静置1~4小时,过滤,滤液用20%氢氧化钠溶液调节至碱性(pH=9.5~11),再用三分之一水液体积量的乙酸乙酯萃取三次,水层用10~20%盐酸溶液调节至酸性(pH=3~4),再用三分之一水液体积量的乙酸乙酯萃取三次,合并此次乙酸乙酯萃取液,浓缩,得甜柿叶黄酮粗品;
C、精制:取甜柿叶黄酮粗品,加15~30倍水溶解,用MCI GEL树脂(75~150μm)吸附,先用2~5倍柱体积水洗脱,再用3~6倍柱体积40%~60%乙醇洗脱,收集乙醇洗脱液,浓缩,干燥,得甜柿黄酮精品。
2.根据权利要求1所述的一种甜柿黄酮的制备方法,其特征在于甜柿黄酮精品含总黄酮不少于75%,且其含山奈酚-3-O-β-D-葡萄糖苷不少于10%、山奈酚-3-O-β-D-半乳糖苷不少于5%、槲皮素-3-O-β-D-葡萄糖苷20%。
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CN111297750A (zh) * | 2019-12-23 | 2020-06-19 | 许昌森医生物健康产业有限公司 | 一种金柿果叶精华面膜及其制备方法 |
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