US4514433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing an aseptic packed tofu
Assignee: Kikkoman Corp
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Filing: 1983-10-21
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Granted: 1985-04-30
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Expires: 2003-10-21
Abstract
Abstract A process for producing an aseptic packed tofu by grinding soybean at 40° to 50° C. to obtain a soybean slurry, heating the soybean slurry at 80° to 100° C. and then filtering the heated soybean slurry to obtain a soybean milk, heat-sterilizing the soybean milk at a temperature not lower than 130° C. for at least 1 second, aseptically adding a sterilized coagulant to the sterilized soybean milk, mixing them, aseptically packing the mixture into a sterilized container and sealing the container, followed by heating the sealed mixture at 70° to 100° C. to coagulate it.
Inventors
- 👤 Masaru Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:24
CPC Classifications
A; A23; A23L; A23L11/00; A23L11/40; A23L11/45
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
In a process for producing an aseptic packed tofu comprising: (a) a step of putting into a grinder soybeans with 3-5 times their dry weight of water and grinding the soybeans to obtain a soybean slurry; (b) a step of heating the soybean slurry at 80° to 100° C. and then filtering the heated soybean slurry to obtain a soybean milk; (c) a step of heat-sterilizing the soybean milk at a temperature not lower than 130° C. for at least 1 second; (d) a step of aseptically adding a sterilized coagulant to the sterilized soybean milk, mixing them, aseptically packing the mixture into a sterilized container and sealing the container; and (e) a step of heating the sealed mixture at 70° to 100° C. to coagulate it, the improvement which comprises carrying out the step of grinding soybeans at 40° to 50° C.
Claim 2
Dependent Claim
143 words
In a process for producing an aseptic packed tofu comprising: (a) a step of putting into a grinder soybeans with 3-5 times their dry weight of water and grinding the soybeans to obtain a soybean slurry; (b) a step of heating the soybean slurry at 80° to 100° C. and then filtering the heated soybean slurry to obtain a soybean milk; (c) a step of heat-sterilizing the soybean milk at a temperature not lower than 130° C. for at least 1 second; (d) a step of aseptically adding a sterilized coagulant to the sterilized soybean milk, mixing them, aseptically packing the mixture into a sterilized container and sealing the container; and (e) a step of heating the sealed mixture at 70° to 100° C. to coagulate it, the improvement which comprises carrying out the step of grinding soybeans at 40° to 50° C.
Claim 3
Dependent Claim
15 words
A process according to claim 1, wherein the soybeans are whole soybeans or dehulled soybeans.
Claim 4
Dependent Claim
44 words
A process according to claim 1, wherein the grinding temperature is kept at 40° to 50° C. by putting into a grinder hot water of 45° to 55° C. and of a 4-fold to 6-fold weight relative to dry soybeans together with soaked soybeans.
Claim 5
Dependent Claim
36 words
A process according to claim 1, wherein the soybean milk is heat-sterilized after having been subjected to homogenizing treatment at a pressure of 200 to 400 kg/cm 2 by the use of a high pressure homogenizer.
Claim 6
Dependent Claim
22 words
A process according to claim 1, wherein the soybean milk is heat-sterilized for 1 to 5 seconds at 130° to 150° C.
Claim 7
Dependent Claim
21 words
A process according to claim 1, wherein the soybean milk is heat-sterilized by the use of a plate type heat-sterilizing machine.
Claim 8
Dependent Claim
20 words
A process according to claim 1, wherein the soybean milk is heat-sterilized by blowing steam directly into the soybean milk.
Claim 9
Dependent Claim
32 words
A process according to claim 1, wherein as the sterilized coagulant, a 20 to 30% aqueous gluconodeltalactone solution is used which has been filtered through a millipore membrane filter for germ removal.
Claim 10
Dependent Claim
55 words
A process according to claim 1, wherein as the sterilized coagulant, a gluconodeltalactone solution is used which is prepared by immersing gluconodeltalactone in a 70 to 80% aqueous ethanol solution for sterilization and adding thereto sterilized water so that the ethanol concentration and the gluconodeltalactone concentration become 10 to 30% and 20 to 30%, respectively.
Claim 11
Dependent Claim
47 words
A process according to claim 1, wherein as the sterilized coagulant, a 20 to 30% aqueous gluconodeltalactone solution is used which is prepared by subjecting gluconodeltalactone to dry heat sterilization for 10 to 15 minutes at 130° to 150° C. and then dissolving it in sterilized water.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |