[특허]Methods and apparatus for low heat spray drying

ZOOMESSENCE, INC.

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Methods and apparatus for low heat spray drying

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B05B-001/34 F26B-003/12 A61K-009/16 C11B-009/00 B05B-005/00 B05B-005/03 B05B-005/08 B05D-001/00
출원번호	US-0092561 (2016-04-06)
등록번호	US-9551527 (2017-01-24)
발명자 / 주소	Beetz, Charles Pershing Corbett, Robert Salem, David
출원인 / 주소	ZOOMESSENCE, INC.
대리인 / 주소	Hultquist, PLLC
인용정보	피인용 횟수 : 0 인용 특허 : 156

초록
▼

Methods and apparatus provide for spray drying a liquid product into a dried powder without applying heat, including: forming a slurry including a liquid solvent, a carrier, and an active ingredient; applying an electrostatic charge to the slurry; atomizing the charged slurry to produce a plurality of electrostatically charged, wet particles; suspending the electrostatically charged, wet particles for a sufficient time to permit repulsive forces induced by the electrostatic charge on at least some wet particles to cause at least some of such particles to divide into wet sub-particles; and continuing the suspending step, without the presence of any heated drying fluids, for a sufficient time to drive off a sufficient amount of the liquid solvent within most of the wet particles to leave a plurality of dried particles (the powder), each dried particle containing the active ingredient encapsulated within the carrier.

대표
청구항
▼

1. A method of spray drying an ingredient into a dried powder, comprising: forming a slurry including water, a carrier, and the ingredient, wherein the slurry has a viscosity in a range of from 500 to 16,000 mPa-s, and contains from 20 to 50 wt % water, wherein the carrier comprises at least one selected from the group consisting of starch and modified starch, and wherein the ingredient comprises at least one selected from the group consisting of foods, flavors, fragrances, medicaments, bacteria, probiotics, and pigments;atomizing the slurry to generate a spray of liquid droplets of the slurry;introducing the spray of liquid droplets of the slurry into a drying chamber; andfeeding air at temperature less than 100° C. into the drying chamber to dry the liquid droplets to form the dried powder comprising a plurality of dried particles containing the ingredient encapsulated within the carrier. 2. The method of claim 1, wherein weight loss of the ingredient in the method does not exceed 5 wt %. 3. The method of claim 1, wherein weight loss of the ingredient in the method does not exceed 3 wt %. 4. The method of claim 1, wherein weight loss of the ingredient in the method does not exceed 2 wt %. 5. The method of claim 1, wherein weight loss of the ingredient in the method does not exceed 1 wt %. 6. The method of claim 1, wherein the slurry has a viscosity in a range of from 1000 to 4000 mPa-s. 7. The method of claim 1, wherein the slurry contains from 20 to 45 wt % water. 8. The method of claim 1, wherein the slurry contains from 20 to 40 wt % water. 9. The method of claim 1, wherein the air is not heated in the method. 10. The method of claim 1, wherein the air is fed into the drying chamber at temperature less than 75° C. 11. The method of claim 1, wherein the air is fed into the drying chamber at temperature less than 45° C. 12. The method of claim 1, wherein the air is fed into the drying chamber at temperature less than 35° C. 13. The method of claim 1, wherein the air is fed into the drying chamber at temperature less than 30° C. 14. The method of claim 1, wherein the air is fed into the drying chamber at an ambient temperature of the drying chamber. 15. The method of claim 1, further comprising dehumidifying the air before it is fed into the drying chamber. 16. The method of claim 1, wherein the spray of liquid droplets has an average droplet size in a range of from 10 to 300 μm. 17. The method of claim 1, wherein the atomizing comprises nozzle atomization, centrifugal atomization, pneumatic atomization, or ultrasonic atomization. 18. The method of claim 1, wherein the atomizing comprises imparting a swirling fluid motion to the spray of liquid droplets of the slurry introduced into the drying chamber. 19. The method of claim 1, wherein the atomizing is conducted at an input pressure in a range of from 20 to 100 psi. 20. The method of claim 1, wherein the ingredient is a food ingredient. 21. The method of claim 1, wherein the ingredient is a flavor ingredient. 22. The method of claim 1, wherein the ingredient is a fragrance ingredient. 23. The method of claim 1, wherein the ingredient is a medicament ingredient. 24. The method of claim 1, wherein the ingredient is a probiotic ingredient. 25. The method of claim 1, wherein the ingredient is a pigment ingredient. 26. The method of claim 1, wherein the ingredient is a flavor oil ingredient. 27. The method of claim 1, wherein the dried powder comprises dried powder fibers. 28. The method of claim 1, wherein the dried powder comprises dried particles and dried powder fibers. 29. The method of claim 1, wherein the method is conducted so that the dried powder when subjected to aging at elevated temperature of 95° F. for 1000 hours does not lose more than 5% of the weight of the ingredient therein. 30. The method of claim 1, wherein the method is conducted so that the dried powder when subjected to aging at elevated temperature of 95° F. for 1000 hours does not lose more than 4% of the weight of the ingredient therein. 31. The method of claim 1, wherein the method is conducted so that the dried powder when subjected to aging at elevated temperature of 95° F. for 1000 hours does not lose more than 3% of the weight of the ingredient therein. 32. The method of claim 1, wherein the method is conducted so that the dried powder when subjected to aging at elevated temperature of 95° F. for 1000 hours does not lose more than 2% of the weight of the ingredient therein. 33. The method of claim 1, wherein the method is conducted so that the dried powder when subjected to aging at elevated temperature of 95° F. for 1000 hours does not lose more than 1% of the weight of the ingredient therein.

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Methods and apparatus for low heat spray drying

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Methods and apparatus for low heat spray drying

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