Method of producing unfrozen expanded ice cream mix possessing superior storage and shelf-life properties

• US 5,925,392 A
• Filed: 08/01/1997
• Issued: 07/20/1999
• Est. Priority Date: 06/18/1991
• Status: Expired due to Fees

• Current Assignee: Tetra Laval Holdings & Finance SA (Tetra Laval Holdings BV)
• Original Assignee: Tetra Laval Holdings & Finance SA (Tetra Laval Holdings BV)
• Inventors: Sponholtz, Per
• Primary Examiner(s): WEINSTEIN, STEVEN L
• Application Number:
  US08/905,047
• Time in Patent Office: 718 Days
• Field of Search: 426/399, 426/115, 426/130, 426/112, 426/393, 426/414, 426/400, 426/401, 426/566, 426/567, 426/410, 426/565
• US Class Current: 426/130
• CPC Class Codes: A23G 2200/00 containing organic compounds, e.g. synthetic flavouring agents
• CPC Class Codes: A23G 2220/02 Foamed, gas-expanded or cellular products
• CPC Class Codes: A23G 9/04 Production of frozen sweets, e.g. ice-cream
• CPC Class Codes: A23G 9/20 the products being mixed with gas, e.g. soft-ice
• CPC Class Codes: A23G 9/305 Sterilisation of the edible materials
• CPC Class Codes: A23G 9/52 Liquid products; Solid products in the form of powders, flakes or granules for making liquid products ; Finished or semi-finished solid products, frozen granules

Abstract

The disclosure relates to a method of producing and pre-distribution preparing unfrozen, expanded ice cream mix with superior storage and shelf-life properties. Starting ingredients necessary for producing the ice cream mix are mixed together, whereafter the mix is heat-treated or otherwise treated so as to exterminate micro-organisms, in particular pathogenic bacteria, present in the mix. The thus treated mix is expanded and subsequently packed in packages ready for distribution. Ice cream mix produced according to this method has extended shelf-life and can be stored in the unfrozen state for long periods of time with retained pristine freshness qualities, without any requirement of cold storage at extremely low storage temperatures.

Claims

1. A method of producing an unfrozen, expanded ice cream mix with superior storage and shelf-life properties comprising the steps of mixing together both the starting ingredients necessary for producing an ice cream mix and a combined emulsifier and stabilizer;

said combined emulsifier and stabilizer consisting of a lactic acid ester of mono- or diglycerides of fatty acids 20-30%, microcrystalline cellulose 20-30%, modified starch 20-30%, and gelatin 10-20%, wherein the amount of combined emulsifier and-stabilizer present in the ice cream mix is sufficient to allow the unfrozen, expanded ice cream mix to be stored for several weeks at cold, non-freezing refrigeration temperatures while remaining expanded;

then homogenizing the ice cream mix, treating the homogenized ice cream mix to exterminate microorganisms in the ice cream mix;

continuously expanding the treated ice cream mix with cooling to about 5°

C. until an overrun of about 90% is achieved to produce said expanded ice cream mix, which expansion is retained during the shelf-life of said treated mix, wherein said expanded ice cream mix is storable for a period of time at non-freezing refrigeration temperatures.

2. The method according to claim 1, further comprising packing the expanded ice cream mix in packages ready for distribution.

3. The method according to claim 2, wherein said ice cream mix is packaged by employing a packing or filling machine, which from a web of a packaging material, forms, fills and seals the finished packages.

4. The method according to claim 3, wherein the expanded ice cream mix is packed in packages formed from at least one web.

5. An unfozen expanded expanded ice cream mix which will remain expanded when stored in an unfrozen refrigerated state for weeks produced by the process by the process of claim 4.

6. The method according to claim 2, wherein packing the expanded ice cream mix is simultaneous with producing the packages.

7. The method according to claim 2, wherein expanding and packaging of the ice cream mix are continuous.

8. The method according to claim 2, wherein packing the expanded ice cream mix in packages is carried out under aseptic conditions.

9. An unfrozen expanded ice cream mix which will remain expanded when stored in an unfrozen refrigerated state for several weeks produced by the process of claim 8.

10. The method according to claim 2, further comprising the step of exterminating microorganisms present in the packages before packing the packages with the ice cream mix.

11. An unfrozen expanded ice cream mix which will remain expanded when stored in an unfrozen refrigerated state for several weeks produced by the process of claim 10.

12. The method according to claim 2, wherein packing is carried out using packaging machines.

13. An unfrozen expanded ice cream mix which will remain expanded when stored in an unfrozen refrigerated state for several weeks produced by the process of claim 2.

14. The method according to claim 1, wherein the ice cream mix is storable at about 5°

C.

15. The method according to claim 1, wherein the microorganisms are pathogenic bacteria.

16. The method according to claim 1, wherein expanding the treated ice cream mix is carried out under cooling.

17. An unfrozen expanded ice cream mix which will remain expanded when stored in an unfrozen refrigerated state for several weeks produced by the process of claim 16.

18. An unfrozen expanded ice cream mix which will remained when stored in an unfrozen refrigerated state for several weeks produced by the process of claim 1.

19. The method according to claim 1, wherein the step of treating the ice cream mix to exterminate microorganisms is by heating.

20. The method according to claim 19, wherein said heating is carried out by pasteurization.

21. An unfrozen expanded ice cream mix which will remain expanded when stored in an unfrozen refrigerated state for several weeks produced by the process of claim 20.

22. An unfrozen expanded ice cream mix which will remain expanded when stored in an unfrozen refrigerated state for several weeks produced by the process of claim 19.