Emulsified nano-calcium carbonate as well as preparation method and application thereof
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A nano-calcium carbonate and high-calcium technology, applied in the field of food additives, can solve the problems of affecting taste, gritty calcium, poor dispersibility, etc., and achieve the effects of simplifying the production process, reducing production costs, and good self-dispersion
Inactive Publication Date: 2017-03-22
南京福特卡特材料科技有限公司
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[0002] Calcium carbonate, as the cheapest and most common calcium preparation, has always been the best choice for calcium additives, but it is difficult to absorb as a solid, and its dispersion
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Embodiment 1
[0027] Embodiment 1, the preparation of emulsified nano calcium carbonate
[0028] Weigh 5.4g of nano-calcium carbonate (60-120nm in particle size) and add it into 20ml of pure water, and form a suspension by stirring.
[0029] Add 3g of gum arabic (molecular weight: 300,000 to 1,000,000 Daltons) into the above suspension, stir and disperse; stir and heat the above solution to 70°C, and continue stirring at this temperature for 30 minutes to obtain a dispersion.
[0030] The above dispersion is spray-dried (spray speed: 50m / s, temperature 190°C); that is, emulsified nano-calcium carbonate is obtained.
[0031] The electron micrograph of emulsified nano-calcium carbonate of the present invention is as figure 1 shown by figure 1 It can be seen that the diameter of the emulsified nano-calcium carbonate prepared in this embodiment is 20-80nm.
Embodiment 2
[0032] Embodiment 2, the preparation of emulsified nano calcium carbonate
[0033] The preparation steps are the same as in Example 1, except that the mass ratio of nano-calcium carbonate to gum arabic is 1.5:1, and the diameter of the prepared emulsified nano-calcium carbonate is 20-100 nm.
Embodiment 3
[0034] Embodiment 3, the dispersibility evaluation of emulsified nano calcium carbonate
[0035] The aqueous dispersion of the emulsified nano-calcium carbonate powder prepared by preparation examples 1 and 2 and P24 (the nano-active calcium carbonate (CCR-800CCR-805CCR-900) produced by Guangzhou Zhenwei Chemical Technology Co., Ltd.), such as figure 2 As shown in the left figure (where S 1 and S 2 Respectively represent the emulsified nano-calcium carbonate prepared by embodiment 1 and 2).
[0036] The dispersion after standing for 4 days is as follows: figure 2 shown in the figure on the right.
[0037] Depend on figure 2 It can be seen that the emulsified nano-calcium carbonate prepared by the present invention basically reaches the dispersion performance of P24.
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Abstract
The invention discloses emulsified nano-calcium carbonate as well as a preparation method and an application thereof. The preparation method of the emulsified nano-calcium carbonate provided by the invention comprises the following steps: 1) adding Arabic gum to the aqueous suspension of nano-calcium carbonate, and performing heating and heat preservation under the condition of stirring to obtain dispersion; and 2) performing spray drying on the dispersion so as to obtain the emulsified nano-calcium carbonate. The emulsified nano-calcium carbonate disclosed by the invention has good stability and has good self-dispersibility, the working procedure of pre-dispersion can be omitted completely in the production of high-calcium milk, and homogenization treatment can be performed after direct adding and uniform stirring, the production process is greatly simplified, and the production cost is reduced. When the emulsified nano-calcium carbonate is used for preparing the high-calcium milk, the emulsified nano-calcium carbonate presents uniform colloidal fluid, the taste and the smell of the prepared high-calcium milk are almost the same as those of pure fresh milk, and the high-calcium milk does not have sense of gravels or unique astringency of calcium. The dispersion stability of the emulsified nano-calcium carbonate disclosed by the present invention is not affected by the viscosity of products prepared from the emulsified nano-calcium carbonate, and the emulsified nano-calcium carbonate can be applied in the fields of neutral milk beverages, soymilk, drinking liquid and the like, with lower viscosity.
Description
technical field [0001] The invention relates to an emulsified nano-calcium carbonate and a preparation method and application thereof, belonging to the field of food additives. Background technique [0002] Calcium carbonate, as the cheapest and most common calcium preparation, has always been the best choice for calcium additives, but it is difficult to absorb as a solid, and its dispersion in liquid is extremely poor, and it will seriously affect the taste of taking it. Traditional calcium carbonate is unstable when added to milk, and has a gritty feel and a unique astringent taste of calcium. Contents of the invention [0003] The object of the present invention is to provide a kind of emulsified nano-calcium carbonate and its preparation method and application, the emulsified nano-calcium carbonate of the present invention has good stability, has very good self-dispersibility, can be used for the preparation of high-calcium food. [0004] The preparation method of emu...
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