Microcapsules and emulsions containing low bloom gelatin and methods of making and using thereof
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Abstract
Described herein are microcapsules and emulsions prepared from low Bloom gelatin and methods of making and using thereof.
113 Citations
127 Claims
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1-103. -103. (canceled)
- 104. A microcapsule comprising an agglomeration of primary microcapsules and a loading substance, each individual primary microcapsule having a primary shell, wherein the loading substance is encapsulated by the primary shell, wherein the agglomeration is encapsulated by an outer shell, wherein the primary shell and/or the outer shell comprises gelatin having a Bloom number less than 50, and wherein the loading substance is a solid, a hydrophobic liquid, or a mixture of a solid and a hydrophobic liquid.
- 121. An emulsion comprising a loading substance and a gelatin having a Bloom number less than 50, wherein the emulsion has a loading payload of 20 to 90%.
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123. A method for preparing microcapsules, comprising:
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a. admixing an aqueous mixture comprising a loading substance, a first polymer comprising a gelatin having a Bloom number less than 50, and a second polymer;
b. emulsifying the admixture of step a;
c. adjusting the pH, temperature, concentration, mixing speed or a combination thereof to form a primary shell comprising the gelatin around the loading substance;
d. cooling the aqueous mixture to a temperature above the gel point of the gelatin until the primary shells form an agglomeration; and
e. cooling the aqueous mixture to from an outer shell around the agglomeration. - View Dependent Claims (124, 125, 126, 127)
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Specification