CN101019838A - Linseed oil microcapsule powder and its prepn - Google Patents
- ️Wed Aug 22 2007
CN101019838A - Linseed oil microcapsule powder and its prepn - Google Patents
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Abstract
亚麻油微胶囊粉末及其制备方法,具体涉及亚麻油微胶囊粉末及其制备方法。其特征是采用改性多糖——辛烯基琥珀酸淀粉钠作为囊材,对亚麻油进行微胶囊化包埋处理,制备亚麻油微胶粉末。将亚麻油加入辛烯基琥珀酸淀粉钠的水溶液中,将该溶液搅拌至均一的乳液体系,然后将该乳液经过高压均质机高压均质得到亚麻油粒径小于1000nm的亚麻油乳液,最后将该乳液进行喷雾干燥或冷冻干燥即可得到稳定性高、流动性好的白色亚麻油微胶囊粉末,该亚麻油微胶囊粉末保持了亚麻油的活性、提高了亚麻油稳定性及生物利用度,可应用于食品及保健品中。Linseed oil microcapsule powder and a preparation method thereof, in particular to linseed oil microcapsule powder and a preparation method thereof. It is characterized in that the modified polysaccharide-sodium starch octenyl succinate is used as a capsule material, and the linseed oil is microencapsulated and embedded to prepare the linseed oil microgel powder. Add linseed oil to the aqueous solution of sodium starch octenyl succinate, stir the solution to a uniform emulsion system, then pass the emulsion through a high-pressure homogenizer to obtain a linseed oil emulsion with a particle size of linseed oil less than 1000nm, and finally The emulsion can be spray-dried or freeze-dried to obtain white linseed oil microcapsule powder with high stability and good fluidity. The linseed oil microcapsule powder maintains the activity of linseed oil and improves the stability and bioavailability of linseed oil , can be used in food and health products.
Description
技术领域technical field
本发明涉食品及保健品领域,具体涉及亚麻油微胶囊粉末及其制备方法。The invention relates to the field of food and health products, in particular to linseed oil microcapsule powder and a preparation method thereof.
背景技术Background technique
亚麻油主要是由胡麻压榨而来,胡麻主要分布在华北和西北地区,由胡麻压榨制得的亚麻油,主要含有亚麻酸等不饱和脂肪酸,其中含有50%以上的α-亚麻酸。Flax oil is mainly extracted from flax, which is mainly distributed in North China and Northwest China. The linseed oil obtained by pressing flax mainly contains unsaturated fatty acids such as linolenic acid, and contains more than 50% of α-linolenic acid.
人类日常生活必须脂肪酸包括饱和脂肪酸及一价不饱和脂肪酸系列,亚油酸(ω-6系列)和α-亚麻酸系列(ω-3系列),人体自身能够合成饱和脂肪酸及一价不饱和脂肪酸,但不能合成亚油酸和α-亚麻酸,只能从食物中摄取。α-亚麻酸具有抑制过敏反应抗炎作用、保护视力、增强智力提高记忆力、抑制衰老、降血脂防止动脉硬化、防止心脑血管病等作用。α-亚麻酸的缺乏会引起生长发育缓慢,严重时可能造成神经性皮炎、高胆固醇血症、脂肪肝、前列腺素代谢紊乱、视觉功能障碍等病症,一旦长期缺乏有可能引起大脑持续性的损害,造成记忆力衰退、老年痴呆症、智力低下等严重后果。基于α-亚麻酸的重要作用和人体普遍摄取不足的状况,1993年联合国FAO和WHO建议专项补充α-亚麻酸。亚麻油含α-亚麻酸约50%,可作为α-亚麻酸补给源。但亚麻油存在一些缺点:气味不佳;不饱和脂肪酸含量较高,易引起氧化酸败;作为食品中添加的油脂,不易混匀,生物利用度不高。Human daily essential fatty acids include saturated fatty acids and monovalent unsaturated fatty acids, linoleic acid (omega-6 series) and α-linolenic acid series (omega-3 series), the human body can synthesize saturated fatty acids and monovalent unsaturated fatty acids , but cannot synthesize linoleic acid and α-linolenic acid, and can only be ingested from food. α-linolenic acid has the functions of inhibiting allergic reactions and anti-inflammation, protecting eyesight, enhancing intelligence, improving memory, inhibiting aging, lowering blood fat, preventing arteriosclerosis, and preventing cardiovascular and cerebrovascular diseases. The lack of α-linolenic acid will cause slow growth and development. In severe cases, it may cause neurodermatitis, hypercholesterolemia, fatty liver, prostaglandin metabolism disorder, visual dysfunction and other diseases. Once long-term deficiency may cause persistent damage to the brain , causing serious consequences such as memory loss, Alzheimer's disease, and mental retardation. Based on the important role of α-linolenic acid and the general insufficient intake of the human body, in 1993, the United Nations FAO and WHO recommended special supplementation of α-linolenic acid. Linseed oil contains about 50% α-linolenic acid, which can be used as a supplementary source of α-linolenic acid. However, linseed oil has some disadvantages: bad smell; high content of unsaturated fatty acids, which is easy to cause oxidative rancidity; as an added oil in food, it is not easy to mix, and its bioavailability is not high.
微胶囊技术是一种用成膜材料把固体或液体包覆形成微小粒子的技术,这种技术经过几十年的不断发展,已日趋成熟。在制药、食品、农业化学品、香料、饲料添加剂以及日用化学品等工业领域中得到广泛应用。近年来,微胶囊技术在高附加值油脂产品制备领域中是令人关注的热点之一。油脂被微胶囊化后,可以降低油脂的热敏性、防止光敏性脂溶性成分受到破坏,从而提高油脂制品的营养性、风味稳定性及生物利用度。Microcapsule technology is a technology that uses film-forming materials to coat solid or liquid to form tiny particles. After decades of continuous development, this technology has become increasingly mature. It is widely used in industrial fields such as pharmaceuticals, food, agricultural chemicals, spices, feed additives and daily chemicals. In recent years, microencapsulation technology has become one of the hot spots in the field of high value-added oil product preparation. After the oil is microencapsulated, it can reduce the heat sensitivity of the oil and prevent the photosensitive fat-soluble components from being damaged, thereby improving the nutrition, flavor stability and bioavailability of oil products.
文献《亚麻油粉末油脂制备的研究》一文报道了以明胶、阿拉伯胶为主要壁材,采用复合凝聚法原理,对亚麻油进行微胶囊化。制备过程中需要进行化学固化处理,这给产品质量带来很大的影响。另外,该产品经过较长时间放置后,流动性变差,易出现不同程度结块。The literature "Research on the preparation of linseed oil powder oil" reports that gelatin and gum arabic are used as the main wall materials, and the linseed oil is microencapsulated by using the principle of composite coacervation method. Chemical curing treatment is required in the preparation process, which has a great impact on product quality. In addition, after the product is placed for a long time, its fluidity becomes poor and it is prone to agglomeration to varying degrees.
中国专利公开CN1222278C报道了采用阿拉伯胶、麦芽糊精及变性淀粉作为囊材制备α-亚麻酸微胶囊。在制备方法中,芯材制备需要在60~70℃条件下加入单甘酯乳化α-亚麻酸,制备囊材品种多。Chinese patent publication CN1222278C reports the preparation of α-linolenic acid microcapsules by using gum arabic, maltodextrin and modified starch as capsule materials. In the preparation method, the preparation of the core material needs to add monoglyceride emulsified α-linolenic acid under the condition of 60-70°C, and there are many kinds of capsule materials.
上述文献及专利中包裹囊材均采用了阿拉伯胶等多种材料,这对产品质量控制是不利的,由于高浓度阿拉伯胶水溶液粘度比较大,给喷雾干燥带来很大的不便;专利CN1222278C温度过高,易引起α-亚麻酸氧化失去活性,而且还加入单甘酯乳化剂。因此需要寻找一种合适单一的材料(其高浓度水溶液粘度低)作为包裹囊材在低温条件下制备出稳定性好、流动性大的高品质亚麻油微胶囊粉末。In the above-mentioned documents and patents, the wrapping capsule material has all adopted various materials such as gum arabic, which is unfavorable to product quality control. Because the viscosity of high-concentration gum arabic aqueous solution is relatively large, it brings great inconvenience to spray drying; patent CN1222278C temperature If it is too high, it is easy to cause α-linolenic acid to lose its activity due to oxidation, and a monoglyceride emulsifier is also added. Therefore need to look for a kind of suitable single material (its high-concentration aqueous solution viscosity is low) to prepare the high-quality linseed oil microcapsule powder with good stability and fluidity under low temperature conditions as wrapping capsule material.
发明内容Contents of the invention
本发明的目的是提供一种亚麻油微胶囊粉末及其制备方法,通过单一的辛烯基琥珀酸淀粉钠作为囊材,在较低温度下对亚麻油进行微胶囊化,解决含有亚麻油的粉体产品的结块、流动性差的问题,从而制备一种稳定性高、流动性好、且能较好保持亚麻油活性的亚麻油微胶囊粉末。The purpose of the present invention is to provide a kind of linseed oil microcapsule powder and preparation method thereof, use single sodium starch octenyl succinate as capsule material, carry out microencapsulation to linseed oil at lower temperature, solve the problem of containing linseed oil The problems of agglomeration and poor fluidity of powder products are solved, thereby preparing a linseed oil microcapsule powder with high stability, good fluidity, and better ability to maintain the activity of linseed oil.
本发明的技术方案为:Technical scheme of the present invention is:
一种亚麻油微胶囊粉末,其特征在于:该亚麻油微胶囊粉末由1重量份芯材及0.6~9重量份囊材组成,芯材为亚麻油,囊材为辛烯基琥珀酸淀粉钠,分散于囊材中的亚麻油的平均粒径小于1000nm。A linseed oil microcapsule powder, characterized in that: the linseed oil microcapsule powder is composed of 1 weight part of core material and 0.6-9 weight parts of capsule material, the core material is linseed oil, and the capsule material is sodium starch octenyl succinate , the average particle size of the linseed oil dispersed in the capsule material is less than 1000nm.
本发明的技术特征还在于:分散于囊材辛烯基琥珀酸淀粉钠中的亚麻油平均粒径为100~500nm。The technical feature of the invention is also that: the average particle size of the linseed oil dispersed in the capsule material sodium starch octenyl succinate is 100-500nm.
为了进一步提高产品本身的抗氧化能力,防止亚麻油中的不饱和脂肪酸被氧化,增加亚麻油的稳定性,本发明还可根据需要在芯材中加入0.1~0.5重量份维生素E。In order to further improve the antioxidant capacity of the product itself, prevent the unsaturated fatty acids in the linseed oil from being oxidized, and increase the stability of the linseed oil, the present invention can also add 0.1-0.5 parts by weight of vitamin E to the core material as required.
本发明还提供了一种所述亚麻油微胶囊粉末的制备方法,其特征在于该方法按如下步骤进行:The present invention also provides a kind of preparation method of described linseed oil microcapsule powder, it is characterized in that the method is carried out as follows:
1)称取0.6~9重量份辛烯基琥珀酸淀粉钠加入水中,在70~80℃条件下搅拌至辛烯基琥珀酸淀粉钠完全溶解,形成30%~60%的辛烯基琥珀酸淀粉钠水溶液;1) Weigh 0.6 to 9 parts by weight of sodium starch octenyl succinate and add it to water, and stir at 70 to 80°C until the sodium starch octenyl succinate is completely dissolved to form 30% to 60% of octenyl succinic acid Aqueous sodium starch solution;
2)将1)中形成的辛烯基琥珀酸淀粉钠水溶液降温至30~40℃,然后向该溶液中加入1重量份亚麻油,搅拌形成均一的乳液;2) cooling the aqueous solution of sodium starch octenyl succinate formed in 1) to 30-40° C., then adding 1 part by weight of linseed oil to the solution, and stirring to form a uniform emulsion;
3)将2)中形成的乳液在500~1500bar压力下经过高压均质机均质循环3~8次,形成亚麻油平均粒径小于1000nm的乳液;3) passing the emulsion formed in 2) through a high-pressure homogenizer for 3 to 8 times under a pressure of 500 to 1500 bar to form an emulsion with an average particle size of linseed oil less than 1000 nm;
4)将3)中形成的乳液进行喷雾干燥制粒,即得到亚麻油微胶囊粉末;或者将3)中形成的乳液进行冷冻干燥,然后将冷冻干燥产品经过粉碎制粒处理,即得到亚麻油微胶囊粉末。4) Spray-dry and granulate the emulsion formed in 3) to obtain linseed oil microcapsule powder; or freeze-dry the emulsion formed in 3), and then subject the freeze-dried product to pulverization and granulation to obtain linseed oil Microencapsulated powder.
本发明亚麻油微胶囊粉末采用单一的囊材在30~40℃条件成功制备了亚麻油小液滴粒径小于1000nm亚麻油微胶囊,该囊材选用一种被全球批准应用于食品的改性多糖——辛烯基琥珀酸淀粉钠,这类多糖分子量大,在油水界面处形成一层强度很大的薄膜。通过本发明制备出的亚麻油微胶囊粉末有效地防止了亚麻油中的不饱和脂肪酸氧化酸败,增加了亚麻油的稳定性,保持亚麻油的活性,掩盖了亚麻油不愉快地气味,提高了亚麻油生物利用度;贮存运输方便,而且易于加入食品和保健品中。The linseed oil microcapsule powder of the present invention uses a single capsule material to successfully prepare linseed oil microcapsules with a droplet size of less than 1000nm under the condition of 30-40°C. Polysaccharide - sodium starch octenyl succinate, this type of polysaccharide has a large molecular weight and forms a strong film at the oil-water interface. The linseed oil microcapsule powder prepared by the present invention effectively prevents the oxidative rancidity of the unsaturated fatty acid in the linseed oil, increases the stability of the linseed oil, keeps the activity of the linseed oil, covers up the unpleasant smell of the linseed oil, and improves the quality of the linseed oil. Oil bioavailability; convenient storage and transportation, and easy to add to food and health products.
具体实施方式Detailed ways
本发明所提供的亚麻油微胶囊粉末由1重量份芯材及0.6~9重量份囊材组成,芯材为亚麻油,囊材为辛烯基琥珀酸淀粉钠。芯材是被囊材辛烯基琥珀酸淀粉钠包裹着,辛烯基琥珀酸淀粉钠的亲油端插入芯材亚麻油中,而亲水端指向相反的方向。分散于囊材中的亚麻油平均粒径小于1000nm。The linseed oil microcapsule powder provided by the invention consists of 1 weight part of core material and 0.6-9 weight parts of capsule material, the core material is linseed oil, and the capsule material is sodium starch octenyl succinate. The core material is wrapped by capsule material starch sodium octenyl succinate, and the lipophilic end of sodium starch octenyl succinate is inserted into the core material linseed oil, while the hydrophilic end points to the opposite direction. The average particle size of linseed oil dispersed in the capsule material is less than 1000nm.
通过对芯材及囊材的配比优化,及制备工艺的优化,该亚麻油微胶囊中分散于囊材中的亚麻油平均粒径为100~500nm。Through optimizing the ratio of the core material and the capsule material and optimizing the preparation process, the average particle size of the linseed oil dispersed in the capsule material in the linseed oil microcapsule is 100-500nm.
本发明亚麻油微胶囊粉末,可根据需要在芯材中加入0.1~0.5重量份维生素E,一是提高产品本身的抗氧化能力,二是进一步防止亚麻油中的不饱和脂肪酸被氧化,增加亚麻油的稳定性。The linseed oil microcapsule powder of the present invention can add 0.1 to 0.5 parts by weight of vitamin E to the core material as required, one is to improve the antioxidant capacity of the product itself, and the other is to further prevent the unsaturated fatty acids in the linseed oil from being oxidized and increase the amount of vitamin E in the linseed oil. oil stability.
本发明亚麻油微胶囊粉末的制备方法,其特征在于:制备方法由如下步骤组成:The preparation method of linseed oil microcapsule powder of the present invention is characterized in that: preparation method is made up of following steps:
1)称取0.6~9重量份辛烯基琥珀酸淀粉钠加入水中,在70~80℃条件下搅拌至辛烯基琥珀酸淀粉钠完全溶解,形成30%~60%的辛烯基琥珀酸淀粉钠水溶液。1) Weigh 0.6 to 9 parts by weight of sodium starch octenyl succinate and add it to water, and stir at 70 to 80°C until the sodium starch octenyl succinate is completely dissolved to form 30% to 60% of octenyl succinic acid Sodium starch solution.
2)将1)中形成的辛烯基琥珀酸淀粉钠水溶液降温至30~40℃,然后向该溶液中加入1重量份亚麻油,搅拌形成均一的乳液。2) Cool down the aqueous solution of starch sodium octenyl succinate formed in 1) to 30-40° C., then add 1 part by weight of linseed oil to the solution, and stir to form a uniform emulsion.
3)将2)中形成的乳液在500~1500bar压力下经过高压均质机均质循环3~8次,形成亚麻油平均粒径小于1000nm的乳液。3) Pass the emulsion formed in 2) through a high-pressure homogenizer for 3-8 times under a pressure of 500-1500 bar to form an emulsion with an average particle size of linseed oil less than 1000 nm.
4)将3)中形成的乳液进行喷雾干燥制粒,即得到亚麻油微胶囊粉末;或者将3)中形成的乳液进行冷冻干燥,然后将冷冻干燥产品经过粉碎制粒处理,即得到亚麻油微胶囊粉末。4) Spray-dry and granulate the emulsion formed in 3) to obtain linseed oil microcapsule powder; or freeze-dry the emulsion formed in 3), and then subject the freeze-dried product to pulverization and granulation to obtain linseed oil Microencapsulated powder.
制备方法步骤4)喷雾干燥条件如下:进风温度180~230℃,出风温度40~80℃;冷冻干燥温度为-40~-80℃。The preparation method step 4) spray drying conditions are as follows: the air inlet temperature is 180-230°C, the air outlet temperature is 40-80°C; the freeze-drying temperature is -40--80°C.
以下列举七个实施例对本发明权利要求范围内作进一步说明:Enumerate seven embodiments below to further illustrate in the scope of the claims of the present invention:
实施例1称取0.6重量份辛烯基琥珀酸淀粉钠加入2重量份水中,在70℃条件下搅拌形成辛烯基琥珀酸淀粉钠水溶液;将该溶液降温至40℃,然后向该溶液中加入1重量份亚麻油,继续搅拌至形成亚麻油初乳;再将该初乳在1500bar压力条件下高压均质3次形成乳白色乳液;最后将该乳白色乳液通过喷雾干燥得到白色亚麻油微胶囊粉末,进风温度为190℃,出风温度为50℃。通过激光粒度仪测定该乳白色乳液平均粒径为718nm。Example 1 Weigh 0.6 parts by weight of sodium starch octenyl succinate and add 2 parts by weight of water, stir at 70°C to form an aqueous solution of sodium starch octenyl succinate; cool the solution to 40°C, and then add Add 1 part by weight of linseed oil, and continue to stir until linseed oil colostrum is formed; then the colostrum is homogenized under high pressure for 3 times under 1500 bar pressure to form a milky white emulsion; finally, the milky white emulsion is spray-dried to obtain white linseed oil microcapsule powder , the inlet air temperature is 190°C, and the outlet air temperature is 50°C. The average particle diameter of the milky white emulsion measured by a laser particle size analyzer is 718nm.
实施例2称取1重量份辛烯基琥珀酸淀粉钠加入3重量份水中,在75℃条件下搅拌形成辛烯基琥珀酸淀粉钠水溶液;将该溶液降温至35℃,然后向该溶液中加入1重量份亚麻油,继续搅拌至形成亚麻油初乳;再将该初乳在800bar压力条件下高压均质4次形成乳白色乳液;最后将该乳白色乳液通过喷雾干燥得到白色亚麻油微胶囊粉末,进风温度为190℃,出风温度为40℃。通过激光粒度仪测定该乳白色乳液平均粒径为602nm。Example 2 Weigh 1 part by weight of sodium starch octenyl succinate and add 3 parts by weight of water, and stir at 75°C to form an aqueous solution of sodium starch octenyl succinate; cool the solution to 35°C, and then add Add 1 part by weight of linseed oil, and continue to stir until linseed oil colostrum is formed; then the colostrum is homogenized under high pressure for 4 times under 800 bar pressure to form a milky white emulsion; finally, the milky white emulsion is spray-dried to obtain white linseed oil microcapsule powder , the inlet air temperature is 190°C, and the outlet air temperature is 40°C. The average particle diameter of the milky white emulsion measured by a laser particle size analyzer is 602 nm.
实施例3称取4重量份辛烯基琥珀酸淀粉钠加入10重量份水中,在80℃条件下搅拌形成辛烯基琥珀酸淀粉钠水溶液;将该溶液降温至30℃,然后向该溶液中加入1重量份亚麻油和0.1重量份维生素E,继续搅拌至形成亚麻油初乳;再将该初乳在1000bar压力条件下高压均质4次形成乳白色乳液;最后将该乳白色乳液通过喷雾干燥得到白色亚麻油微胶囊粉未,进风温度为200℃,出风温度为60℃。通过激光粒度仪测定该乳白色乳液平均粒径为448nm。Example 3 Weigh 4 parts by weight of sodium starch octenyl succinate and add it to 10 parts by weight of water, stir at 80°C to form an aqueous solution of sodium starch octenyl succinate; cool the solution to 30°C, and then add Add 1 part by weight of linseed oil and 0.1 part by weight of vitamin E, and continue stirring until the formation of linseed oil colostrum; then homogenize the colostrum under 1000 bar pressure for 4 times to form a milky white emulsion; finally, the milky white emulsion is obtained by spray drying For white linseed oil microcapsule powder, the air inlet temperature is 200°C, and the outlet air temperature is 60°C. The average particle diameter of the milky white emulsion measured by a laser particle size analyzer is 448nm.
实施例4称取6重量份辛烯基琥珀酸淀粉钠加入10重量份水中,在80℃条件下搅拌形成辛烯基琥珀酸淀粉钠水溶液;将该溶液降温至35℃,然后向该溶液中加入1重量份亚麻油和0.5重量份维生素E,继续搅拌至形成亚麻油初乳;再将该初乳在800bar压力条件下高压均质6次形成乳白色乳液;最后将该乳白色乳液通过喷雾干燥得到白色亚麻油微胶囊粉末,进风温度为210℃,出风温度为60℃。通过激光粒度仪测定该乳白色乳液平均粒径为332nm。Example 4 Weigh 6 parts by weight of sodium starch octenyl succinate and add it to 10 parts by weight of water, stir at 80°C to form an aqueous solution of sodium starch octenyl succinate; cool the solution to 35°C, and then add Add 1 part by weight of linseed oil and 0.5 part by weight of vitamin E, and continue to stir until the formation of linseed oil colostrum; then homogenize the colostrum under 800 bar pressure for 6 times to form a milky white emulsion; finally, spray dry the milky white emulsion to obtain White linseed oil microcapsule powder, the air inlet temperature is 210°C, and the outlet air temperature is 60°C. The average particle diameter of the milky white emulsion measured by a laser particle size analyzer is 332 nm.
实施例5称取9重量份辛烯基琥珀酸淀粉钠加入20重量份水中,在75℃条件下搅拌形成辛烯基琥珀酸淀粉钠水溶液;将该溶液降温至35℃,然后向该溶液中加入1重量份亚麻油,继续搅拌至形成亚麻油初乳;再将该初乳在500bar压力条件下高压均质8次形成乳白色乳液;最后将该乳白色乳液通过喷雾干燥得到白色亚麻油微胶囊粉末,进风温度为230℃,出风温度为80℃。通过激光粒度仪测定该乳白色乳液平均粒径为204nm。Example 5 Weigh 9 parts by weight of sodium starch octenyl succinate and add it to 20 parts by weight of water, and stir at 75°C to form an aqueous solution of sodium starch octenyl succinate; cool the solution to 35°C, and then add Add 1 part by weight of linseed oil, and continue to stir until linseed oil colostrum is formed; then the colostrum is homogenized under 500 bar pressure for 8 times to form a milky white emulsion; finally, the milky white emulsion is spray-dried to obtain white linseed oil microcapsule powder , the inlet air temperature is 230°C, and the outlet air temperature is 80°C. The average particle diameter of the milky white emulsion measured by a laser particle size analyzer is 204 nm.
实施例6称取9重量份辛烯基琥珀酸淀粉钠加入20重量份水中,在75℃条件下搅拌形成辛烯基琥珀酸淀粉钠水溶液;将该溶液降温至35℃,然后向该溶液中加入1重量份亚麻油,继续搅拌至形成亚麻油初乳;再将该初乳在800bar压力条件下高压均质6次形成乳白色乳液;最后将该乳白色乳液在-80℃冷冻干燥8h得到块状亚麻油微胶囊,最后将该块状亚麻油微胶囊经过研钵碾碎得到亚麻油微胶囊粉末。通过激光粒度仪测定该乳白色乳液平均粒径为138nm。Example 6 Weigh 9 parts by weight of sodium starch octenyl succinate and add it to 20 parts by weight of water, stir at 75°C to form an aqueous solution of sodium starch octenyl succinate; cool the solution to 35°C, and then add Add 1 part by weight of linseed oil, and continue to stir until linseed oil colostrum is formed; then the colostrum is homogenized under 800 bar pressure for 6 times to form a milky white emulsion; finally, the milky white emulsion is freeze-dried at -80°C for 8 hours to obtain a block Linseed oil microcapsules, and finally the block-shaped linseed oil microcapsules are ground in a mortar to obtain linseed oil microcapsule powder. The average particle diameter of the milky white emulsion measured by a laser particle size analyzer is 138 nm.
实施例7称取4重量份辛烯基琥珀酸淀粉钠加入10重量份水中,在80℃条件下搅拌形成辛烯基琥珀酸淀粉钠水溶液;将该溶液降温至35℃,然后向该溶液中加入1重量份亚麻油,继续搅拌至形成亚麻油初乳;再将该初乳在1000bar压力条件下高压均质6次形成乳白色乳液;最后将该乳白色乳液在-40℃冷冻干燥18h得到块状亚麻油微胶囊,最后将该块状亚麻油微胶囊经过球磨机碾碎得到亚麻油微胶囊粉末。通过激光粒度仪测定该乳白色乳液平均粒径为221nm。Example 7 Weigh 4 parts by weight of sodium starch octenyl succinate and add it to 10 parts by weight of water, and stir at 80°C to form an aqueous solution of sodium starch octenyl succinate; the solution is cooled to 35°C, and then added to the solution Add 1 part by weight of linseed oil, and continue to stir until linseed oil colostrum is formed; then the colostrum is homogenized under 1000 bar pressure for 6 times to form a milky white emulsion; finally, the milky white emulsion is freeze-dried at -40°C for 18 hours to obtain a block Linseed oil microcapsules, and finally the block-shaped linseed oil microcapsules are ground by a ball mill to obtain linseed oil microcapsule powders. The average particle diameter of the milky white emulsion measured by a laser particle size analyzer is 221 nm.
Claims (4)
1. linseed oil microcapsule powder, it is characterized in that: this linseed oil microcapsule powder is made up of 1 weight portion core and 0.6~9 weight portion capsule material, core is an oleum lini, and the capsule material is a starch sodium octenyl succinate, and the mean diameter that is scattered in the oleum lini in the capsule material is less than 1000nm.
2. according to the described linseed oil microcapsule powder of claim 1, it is characterized in that: the oleum lini mean diameter that is scattered in the capsule material starch sodium octenyl succinate is 100~500nm.
3. according to claim 1 or 2 described linseed oil microcapsule powders, it is characterized in that: the vitamin E that in core, also contains 0.1~0.5 weight portion.
4. linseed oil microcapsule powder preparation method as claimed in claim 1 is characterized in that this method carries out as follows:
1) starch sodium octenyl succinate with 0.6~9 weight portion adds in the entry, is stirred to starch sodium octenyl succinate and dissolves fully under 70~80 ℃ of conditions, forms 30%~60% starch sodium octenyl succinate aqueous solution;
2) with 1) in the starch sodium octenyl succinate aqueous solution that forms be cooled to 30~40 ℃, in this solution, add the oleum lini of 1 weight portion then, stir the back and form homogenous emulsion;
3) with 2) through high pressure homogenizer homogenizing circulation 3~8 times, formation oleum lini mean diameter is less than the emulsion of 1000nm under 500~1500bar pressure for the middle emulsion that forms;
4) with 3) in the emulsion that forms carry out spray-drying process, promptly obtain linseed oil microcapsule powder; Perhaps with 3) in the emulsion that forms carry out lyophilization, then with cryodesiccated product through pulverizing pelletization treatment, promptly obtain linseed oil microcapsule powder.
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