Temperature controlled and pH dependent self gelling biopolymeric aqueous solution
First Claim
1. A polymeric self-gelling composition that remains liquid at temperature between 4°
- C. and 15°
C. and solidifies when heated between 30°
C. and 60°
C., said self-gelling composition comprising;
a) an acidic water-based medium at a temperature between 4°
C. and 15°
C.;
b) 0.1 to 10% by weight of a pH-gelling acid-soluble polymer, with the proviso that said polymer is free of chitosan, and wherein said polymer is collagen; and
c) 0.1 to 10% by weight of a water-soluble molecule having a pKa between 6.0 and 8.4;
wherein said self-gelling composition has a final pH ranging from 5.8 and 7.4, and forms a stable solid and homogeneous gel when heated to temperature of 30°
C.-60°
C.
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Accused Products
Abstract
The present invention relates a biopolymeric liquid aqueous composition for producing self-gelling systems and gels, which comprises: an acidic water-based medium, 0.1 to 10% by weight of a pH-gelling acid-soluble biopolymer; and 0.1 to 10% by weight of a water-soluble molecule having a basic character and a pKa between 6.0 and 8.4, or a water-soluble residue or sequence of the molecule having a basic character and a pKa between 6.0 and 8.4. The liquid composition has a final pH ranging from 5.8 and 7.4, and forms a stable solid and homogeneous gel within a temperature range from 10 to 70° C. The present invention also relates to a method for preparing the composition and uses thereof.
146 Citations
73 Claims
-
1. A polymeric self-gelling composition that remains liquid at temperature between 4°
- C. and 15°
C. and solidifies when heated between 30°
C. and 60°
C., said self-gelling composition comprising;a) an acidic water-based medium at a temperature between 4°
C. and 15°
C.;b) 0.1 to 10% by weight of a pH-gelling acid-soluble polymer, with the proviso that said polymer is free of chitosan, and wherein said polymer is collagen; and c) 0.1 to 10% by weight of a water-soluble molecule having a pKa between 6.0 and 8.4; wherein said self-gelling composition has a final pH ranging from 5.8 and 7.4, and forms a stable solid and homogeneous gel when heated to temperature of 30°
C.-60°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
- C. and 15°
-
41. A polymeric liquid aqueous composition for producing self-gelling systems and gels at temperature between 30°
- C. and 60°
C., which comprises;a) an acidic water-based medium at a temperature between 4°
C. and 15°
C.; andb) 0.1 to 10% by weight of a pH-gelling acid-soluble polymer, wherein said polymer is collagen; and c) 0.1 to 10% by weight of a water-soluble molecule having a pKa between 6.0 and 8.4, said water-soluble molecule being free of salt of polyol and sugar; wherein said liquid composition has a final pH ranging from 5.8 and 7.4, and forms a stable solid and homogeneous gel when heated within a temperature range between 30°
C. and 60°
C. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73)
- C. and 60°
Specification