WO2021098174A1 - 同时含叶黄素和蛹虫草醇提物的纳米脂质体及其制备方法 - Google Patents

同时含叶黄素和蛹虫草醇提物的纳米脂质体及其制备方法 Download PDF

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WO2021098174A1
WO2021098174A1 PCT/CN2020/092080 CN2020092080W WO2021098174A1 WO 2021098174 A1 WO2021098174 A1 WO 2021098174A1 CN 2020092080 W CN2020092080 W CN 2020092080W WO 2021098174 A1 WO2021098174 A1 WO 2021098174A1
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lutein
alcohol extract
cordyceps militaris
liposome
cholesterol
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PCT/CN2020/092080
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French (fr)
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宋江峰
徐鹏翔
戴竹青
吴彩娥
李大婧
刘春泉
张钟元
王琨
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江苏省农业科学院
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    • 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
    • A23L31/00—Edible extracts or preparations of fungi; Preparation or treatment thereof
    • A23L31/10—Yeasts or derivatives thereof
    • A23L31/15—Extracts
    • 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
    • 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
    • A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/03—Organic compounds
    • A23L29/035—Organic compounds containing oxygen as heteroatom
    • 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
    • A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/03—Organic compounds
    • A23L29/05—Organic compounds containing phosphorus as heteroatom
    • 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
    • A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/10—Foods or foodstuffs containing additives; Preparation or treatment thereof containing emulsifiers
    • 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
    • A23L31/00—Edible extracts or preparations of fungi; Preparation or treatment thereof
    • 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
    • A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
    • A61K31/07—Retinol compounds, e.g. vitamin A
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A61K36/06—Fungi, e.g. yeasts
    • A61K36/062—Ascomycota
    • A61K36/066—Clavicipitaceae
    • A61K36/068—Cordyceps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/10—Dispersions; Emulsions
    • A61K9/127—Liposomes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • 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

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  • the invention relates to the field of food nutrition and health, in particular to a nano liposome containing both lutein and an alcohol extract of Cordyceps militaris and a preparation method thereof.
  • Cordyceps militaris alcohol extract can inhibit the proliferation of a variety of human tumor cell lines, of which cordycepin is considered the main Anti-tumor ingredients can cooperate with other anti-cancer ingredients to more effectively induce cancer cell apoptosis.
  • Lipid-based self-assembled colloidal delivery systems are favored by manufacturers due to the safety of lipid molecules, their ability to enhance transcellular transport and improve paracellular drug transport.
  • Liposomes have a structure similar to biological membranes, which can improve the in vivo solubility of active substances, reduce the toxicity caused by active substances, and provide continuous and targeted targeted delivery; they can simultaneously deliver lipophilic and hydrophilic compounds.
  • a total of 29 nanoliposome drugs have been approved for marketing worldwide, showing broad application prospects.
  • lutein nanoliposomes with a particle size of 230 nm prepared by ethanol injection can improve the dispersibility and bioavailability of lutein (optimization of the preparation process of lutein nanoliposomes and its Oxidation stability[J].Food Science,2017,38(18):259-265).
  • the mixture of lutein and lycopene contained in liposomes has a synergistic antioxidant effect (Carotenoid mixtures protect multilamellar liposomes against oxidative damage: synergistic effects of lycopene and lutein[J].FEBS Letters, 1998, 427(2): 305- 308).
  • a Chinese patent discloses a lutein nanoliposome and a preparation method thereof, which are made of lutein crystal powder, egg yolk lecithin and cholesterol. It is prepared by high-pressure homogenization, ultrasonic dispersion hydration and microporous filtration.
  • Chinese Patent Publication No. CN106798725A, publication date June 6, 2017 discloses a method for preparing cordycepin nanoliposomes. The pH gradient method and the reverse evaporation method are used in combination to prepare liposomes to protect the cordyceps. The in vivo activity of vitamin C significantly inhibits liver cancer cells.
  • the liposome obtained by this method has a high encapsulation rate ( ⁇ 90%), uniform particle size, and good stability.
  • the purpose of the present invention is to provide a nano liposome containing both lutein and Cordyceps militaris alcohol extract and a preparation method thereof, so as to realize the co-loading of different hydrophobic active substances in the nano liposomes and improve the alcohol extraction of lutein and Cordyceps militaris The load and stability of the material.
  • step 2 Under 400 rpm magnetic stirring, slowly add 5-10 mL of lutein-ethanol solution to the 15-25 mL of soybean phospholipid-cholesterol-Tween 80 mixed solution in step 2), and then even at 9000 rpm Emulsify for 2-4 minutes to prepare a lutein suspension;
  • step 2) The lutein suspension in step 2) is concentrated under reduced pressure at 35° C., and dried in a vacuum in the dark to form a light yellow transparent film;
  • step 5) The crude liposome suspension obtained in step 4) is circulated twice through a high-pressure micro-jet at 9000-12000 psi to obtain a nano-liposome solution containing lutein and an alcohol extract of Cordyceps militaris.
  • the content of the alcohol extract of Cordyceps militaris in the nano-liposomes containing both lutein and the alcohol extract of Cordyceps militaris of the present invention is 4%-8% by mass, and the mass ratio of lutein to the alcohol extract of Cordyceps militaris is 1: 3-1:5.
  • the alcohol extract of Cordyceps militaris is prepared by ultrasonic-assisted extraction with an ethanol solution with a volume ratio of 50%-75%.
  • the alcohol extract contains cordycepin, adenosine and cordycepic acid.
  • the ethanol injection method combined with the micro-jet technology realizes that the two different hydrophobic substances of lutein and the alcohol extract of Cordyceps militaris are co-loaded in the nano-liposomes according to a certain mass ratio, and the liposomes are prepared.
  • the particle size is less than 200nm
  • the loading rate of lutein is higher than 90%
  • the loading rate of the alcohol extract of Cordyceps militaris is higher than 85%
  • the stability is good.
  • double-layered liposomes (Figure 1) may have stronger synergistic anti-tumor activity and exert a variety of health benefits in the body.
  • Fig. 1 is a schematic diagram of the structure of nano-liposomes containing both lutein and an alcohol extract of Cordyceps militaris according to the present invention
  • Figure 3 is a photograph of the lutein-cordyceps militaris alcohol extract nanoliposome solution of the present invention.
  • the present invention provides a nanoliposome containing both lutein and an alcohol extract of Cordyceps militaris and a preparation method thereof.
  • the present invention is further illustrated by specific examples below.
  • step 2) The lutein suspension in step 2) is concentrated under reduced pressure at 35° C., and dried in a vacuum in the dark to form a light yellow transparent film;
  • the measurement method is: dilute the liposome solution sample to 100 times with deionized water, add 4 mL to the polystyrene tank, equilibrate for 2 minutes, and test the temperature It is 25°C, with the properties of water as the measurement parameter, the solution viscosity and refractive index are 0.933CP and 1.333, respectively. See Figure 2 for the particle size distribution.
  • the extract is mixed and filtered with a 0.45 ⁇ m organic filter, at the maximum absorption wavelength of 460nm Measure the absorbance value and calculate the lutein content, which is the amount of free lutein; in addition, take 500 ⁇ L liposomes and add methanol to make the volume to 5 mL, 100W ultrasound for 30 min to demulsify, take 250 ⁇ L of demulsified emulsion in a 10 mL centrifuge tube, repeat The above-mentioned lutein extraction method calculates the lutein content, which is the total content of lutein in the 250 ⁇ L liquid.
  • the calculation formula of lutein loading rate (%) is as follows:
  • the average particle size of the lutein-cordyceps militaris alcohol extract composite nanoliposomes is 131 ⁇ 72nm
  • the loading rate of lutein is 98.2%
  • the loading rate of the alcohol extract of Cordyceps militaris is 89.1%.
  • step 2) The lutein suspension in step 2) is concentrated under reduced pressure at 35° C., and dried in a vacuum in the dark to form a light yellow transparent film;
  • step 2) The lutein suspension in step 2) is concentrated under reduced pressure at 35° C., and dried in a vacuum in the dark to form a light yellow transparent film;
  • step 5) The crude liposome suspension obtained in step 4) was circulated 3 times through a 9000 psi high-pressure micro-jet to obtain a nano-liposome solution containing lutein and an alcohol extract of Cordyceps militaris, wherein the liposome particle size is 203 ⁇ 89nm, The loading rate of lutein was 92.5%, and the loading rate of the ethanol extract of Cordyceps militaris was 87.3%.

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Abstract

一种同时含叶黄素和蛹虫草醇提物的纳米脂质体，蛹虫草醇提物的质量百分比含量为4％-8％，叶黄素与蛹虫草醇提物的质量比例为1:3-1:5。采用乙醇注入法联合微射流技术实现将叶黄素与蛹虫草醇提物两种疏水性不同的活性物质共载于纳米脂质体中，制备得到的脂质体粒径低于200nm，叶黄素装载率高于90％，蛹虫草醇提物装载率高于85％，稳定性较好，且制备工艺安全简单、成本低，有利于工业化生产。

Description

同时含叶黄素和蛹虫草醇提物的纳米脂质体及其制备方法 技术领域
本发明涉及食品营养健康领域，具体涉及一种同时含叶黄素和蛹虫草醇提物的纳米脂质体及其制备方法。
背景技术
研究表明，饮食中摄入一定量的叶黄素与降低AMD、癌症和心血管疾病的风险有关；蛹虫草醇提物可以抑制多种人类肿瘤细胞系的增殖，其中虫草素被认为是主要的抗肿瘤成分，可协同其它抗癌成分更有效地诱导癌症细胞凋亡。
为了提高这两种天然活性物质的体内稳定性、溶解性和生物利用度，更好发挥其药理功效，近年来，新型纳米药物递送系统成为药剂学与食品工业的研究热点和难点。基于脂质的自组装胶体递送系统因脂质分子安全性、能增强跨细胞转运和改善细胞旁药物转运而受到生产者的青睐。脂质体具有类似于生物膜的结构，可以改善活性物质的体内溶解性、减少活性物质引起的毒性以及持续且针对性的靶向递送；能同时递送亲脂性和亲水性化合物。目前，全球共有29个纳米脂质体药物获批上市，展现出了广阔的应用前景。已有文献报道，通过乙醇注入法制备得到粒径在230nm内的叶黄素纳米脂质体可提高叶黄素的分散性和生物利用率(叶黄素纳米脂质体的制备工艺优化及其氧化稳定性[J].食品科学,2017,38(18):259-265)。叶黄素和番茄红素混合物共载于脂质体起到了协同抗氧化作用(Carotenoid mixtures protect multilamellar liposomes against oxidative damage:synergistic effects of lycopene and lutein[J].FEBS Letters,1998,427(2):305-308)。在知识产权方面，中国专利(公开号CN105726482A，公开日2016年7月6日)公开了一种叶黄素纳米脂质体及其制备方法，由叶黄素晶体粉末、蛋黄卵磷脂和胆固醇通过高压均质、超声波分散水合及微孔过滤制备而成。中国专利(公开号CN106798725A，公开日2017年6月6日)公开了一种虫草素纳米脂质体的制备方法，采用pH梯度法与逆向蒸发法联合使用制备脂质体很好得保护了虫草素的体内活性，显著抑制了肝癌细胞，该方法获得的脂质体包封率高(≥90％)，粒径均匀，稳定性好。
现有的工艺与技术方案中，尚没有考虑将叶黄素与蛹虫草醇提物两种不同疏水性药物协载于脂质体，存在活性物质包埋单一、药理药效相对差等问题。具有多种有益健康的功能食品的开发使得设计同时包埋多个活性物质的载体成为必然。
发明内容
本发明的目的在于提供一种同时含叶黄素和蛹虫草醇提物的纳米脂质体及其制备方法，以实现纳米脂质体中不同疏水性活性物质的共载，提高叶黄素和蛹虫草醇提物的负载量和稳定性。
本发明的目的是通过以下方式实现的：
一种同时含叶黄素和蛹虫草醇提物的纳米脂质体的制备方法，包括以下制备步骤：
1)按照质量比为4:1:1称取大豆磷脂、胆固醇和吐温80，充分溶于无水乙醇中，制得大豆磷脂-胆固醇-吐温80混合溶液；
2)在400转/分磁力搅拌下，将5-10mL叶黄素-乙醇溶液缓慢加入步骤2)中15-25mL的大豆磷脂-胆固醇-吐温80混合溶液中，再经9000转/分均质乳化2-4min，制得叶黄素混悬液；
3)步骤2)中的叶黄素混悬液在35℃下减压浓缩，经避光真空干燥形成淡黄色透明薄膜；
4)向步骤3)形成的干薄膜加入20-30mL含有蛹虫草醇提物的磷酸盐缓冲溶液，在35℃下、40转/分减压旋转水合，得到含叶黄素和蛹虫草醇提物的粗脂质体混悬液；
5)步骤4)得到的粗脂质体混悬液经9000-12000psi高压微射流循环2次，得到含叶黄素和蛹虫草醇提物的纳米脂质体溶液。
本发明所述同时含叶黄素和蛹虫草醇提物的纳米脂质体中蛹虫草醇提物的质量百分比含量为4％-8％，叶黄素与蛹虫草醇提物的质量比例为1:3-1:5。
蛹虫草醇提物用体积比为50％-75％的乙醇溶液进行超声辅助提取制得，醇提物中含虫草素、腺苷和虫草酸。
有益效果
采用乙醇注入法联合微射流技术实现将叶黄素与蛹虫草醇提物两种疏水性不同的物质按照一定的质量配比最优程度共载于纳米脂质体中，制备得到的脂质体粒径低于200nm，叶黄素装载率高于90％，蛹虫草醇提物装载率高于85％，稳定性较好。并且，相较于含单一活性物质的脂质体，双层包埋脂质体(附图1)协同发挥抗肿瘤活性的作用可能更强，并在体内发挥多种有益健康的作用。
附图说明
图1本发明所述同时含叶黄素和蛹虫草醇提物的纳米脂质体的结构示意图；
图2本发明所述同时含叶黄素和蛹虫草醇提物的纳米脂质体的粒径分布图；
图3本发明所述叶黄素-蛹虫草醇提物纳米脂质体溶液的照片。
图1中：1、蛹虫草醇提物；2、叶黄素；3、磷脂双分子层；4、吐温-80
具体实施方式
本发明提供了一种同时含叶黄素和蛹虫草醇提物的纳米脂质体及其制备方法，下面通过具体实施例对本发明做进一步说明。
实施例1
1)按照质量比为4:1:1称取大豆磷脂、胆固醇和吐温80，充分溶于无水乙醇中，制得大豆磷脂-胆固醇-吐温80混合溶液；
2)在400转/分磁力搅拌下，将5mL叶黄素-乙醇溶液缓慢加入步骤1)中20mL的大豆磷脂-胆固醇-吐温80混合溶液中，再经9000转/分均质乳化2min，制得叶黄素混悬液；
3)步骤2)中的叶黄素混悬液在35℃下减压浓缩，经避光真空干燥形成淡黄色透明薄膜；
4)向步骤3)中形成的干燥薄膜中加入20mL含有蛹虫草醇提物的磷酸盐缓冲溶液，在35℃下、40 转/分减压旋转水合，得到含叶黄素和蛹虫草醇提物的粗脂质体混悬液；
5)步骤4)得到的粗脂质体混悬液经10000psi高压微射流循环2次，得到含叶黄素和蛹虫草醇提物的纳米脂质体溶液(附图3)。
使用PSS纳米激光粒度仪对脂质体的粒径进行测定，测定方法为：将脂质体溶液样品用去离子水稀释至100倍，在聚苯乙烯槽中加4mL，平衡2min，测试的温度是25℃，以水的性质作为测定参数，溶液黏度和折射率分别为0.933CP和1.333。粒径分布图见附图2。
新鲜制备好的叶黄素-蛹虫草提取物纳米脂质体，取500μL脂质体于2mL离心管，10000转/分离心30min，离心结束后取上清250μL于10mL离心管，然后加入2mL DCM(二氯甲烷:甲醇＝2:1,V:V)溶剂，涡旋振荡5min后用1mL正己烷重复萃取3次，将萃取液混合使用0.45μm有机系滤头过滤，在最大吸收波长460nm处测定吸光值，并计算叶黄素含量，此即游离叶黄素的量；另外再取500μL脂质体添加甲醇定容至5mL，100W超声30min破乳，取250μL破乳液于10mL离心管，重复上述叶黄素萃取方法，计算得到叶黄素含量，此即所取250μL液体中叶黄素的总含量。叶黄素装载率(％)的计算公式如下：
Figure PCTCN2020092080-appb-000001
以虫草素作为蛹虫草醇提物包埋率指标，取500μL刚制备好的叶黄素-蛹虫草醇提物纳米脂质体于2mL离心管，10000转/分离心30min，离心结束后取上清先经0.45μm滤膜过滤，再经0.22μm滤膜过滤除去固体杂质，经过高效液相色谱-紫外检测器分析，检测波长为260nm。经计算得到游离虫草素含量。另外取500μL脂质体添加0.1％Triton X-100定容至5mL，100W超声30min破乳。重复上述过滤过程，经过高效液相色谱-紫外检测器分析并计算得到500μL脂质体中虫草素的总含量。蛹虫草醇提物装载率(％)的计算公式如下：
Figure PCTCN2020092080-appb-000002
根据上述方法测得叶黄素-蛹虫草醇提物复合纳米脂质体的平均粒径为131±72nm，叶黄素的装载率为98.2％，蛹虫草醇提物的装载率为89.1％。
实施例2
1)按照质量比为4:1:1称取大豆磷脂、胆固醇和吐温80，充分溶于无水乙醇中，制得大豆磷脂-胆固醇-吐温80混合溶液；
2)在400转/分磁力搅拌下，将10mL叶黄素-乙醇溶液缓慢加入步骤1)中20mL的大豆磷脂-胆固醇-吐温80混合溶液中，再经9000转/分均质乳化3min，制得叶黄素混悬液；
3)步骤2)中的叶黄素混悬液在35℃下减压浓缩，经避光真空干燥形成淡黄色透明薄膜；
4)向步骤3)中形成的干燥薄膜中加入30mL含有蛹虫草醇提物的磷酸盐缓冲溶液，在35℃下、40转/分减压旋转水合，得到含叶黄素和蛹虫草醇提物的粗脂质体混悬液；
5)步骤4)得到的粗脂质体混悬液经12000psi高压微射流循环1次，得到含叶黄素和蛹虫草醇提物的纳米脂质体溶液，其中脂质体粒径为163±69nm，叶黄素的装载率为93.7％，蛹虫草醇提物的装载率为88.4％。
实施例3
1)按照质量比为4:1:1称取大豆磷脂、胆固醇和吐温80，充分溶于无水乙醇中，制得大豆磷脂-胆固醇-吐温80混合溶液；
2)在400转/分磁力搅拌下，将8mL叶黄素-乙醇溶液缓慢加入步骤1)中15mL的大豆磷脂-胆固醇-吐温80混合溶液中，再经9000转/分均质乳化4min，制得叶黄素混悬液；
3)步骤2)中的叶黄素混悬液在35℃下减压浓缩，经避光真空干燥形成淡黄色透明薄膜；
4)向步骤3)中形成的干燥薄膜中加入25mL含有蛹虫草醇提物的磷酸盐缓冲溶液，在35℃下、40转/分减压旋转水合，得到含叶黄素和蛹虫草醇提物的粗脂质体混悬液；
5)步骤4)得到的粗脂质体混悬液经9000psi高压微射流循环3次，得到含叶黄素和蛹虫草醇提物的纳米脂质体溶液，其中脂质体粒径为203±89nm，叶黄素的装载率为92.5％，蛹虫草醇提物的装载率为87.3％。

Claims (3)

  1. 一种同时含叶黄素和蛹虫草醇提物的纳米脂质体，其特征在于，所述的纳米脂质体中蛹虫草醇提物的质量百分比含量为4％-8％，叶黄素与蛹虫草醇提物的质量比例为1:3-1:5。
  2. 根据权利要求1所述的同时含叶黄素和蛹虫草醇提物的纳米脂质体，其特征在于，蛹虫草醇提物用体积比为50％-75％的乙醇溶液进行超声辅助提取制得，醇提物中含虫草素、腺苷和虫草酸。
  3. 根据权利要求1所述的同时含叶黄素和蛹虫草醇提物的纳米脂质体的制备方法，其特征在于，包括以下制备步骤：
    1)按照质量比例4:1:1称取大豆磷脂、胆固醇和吐温80，充分溶于无水乙醇中，制得大豆磷脂-胆固醇-吐温80混合溶液；
    2)在400转/分磁力搅拌下，将5-10mL叶黄素-乙醇溶液缓慢加入步骤1)中15-25mL的大豆磷脂-胆固醇-吐温80混合溶液中，再经9000转/分均质乳化2-4min，制得叶黄素混悬液；
    3)步骤2)中的叶黄素混悬液在35℃下减压浓缩，经避光真空干燥形成淡黄色透明薄膜；
    4)向步骤3)中形成的干燥薄膜中加入20-30mL含有蛹虫草醇提物的磷酸盐缓冲溶液，在35℃下、40转/分减压旋转水合，得到含叶黄素和蛹虫草醇提物的粗脂质体混悬液；
    5)步骤4)得到的粗脂质体混悬液经9000-12000psi高压微射流循环2次，得到含叶黄素和蛹虫草醇提物的纳米脂质体溶液。
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