# US 5,707,669 A · Yeast composition

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- Number: US 5,707,669 A
- Document ID: US5707669A
- Status: Granted
- Kind: A
- Application number: 08/712,004
- Filed: 1996-09-11
- Granted: 1998-01-13
- Earliest claimed: 1996-09-11
- Assignees: M-CAP Technologies International
- Inventors: John Soltis; Joseph L. Sell
- Web page: https://patentgrep.com/patent/US5707669A

## CPC

- C12N 1/04: Preserving or maintaining viable microorganisms (immobilised microorganisms C12N11/00)
- A21D 6/001: {Cooling}
- A21D 8/047: {with yeasts}
- C12N 11/04: entrapped within the carrier, e.g. gel or hollow fibres
- C12N: MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA (microbiological testing media C12Q1/00)
- A21D: TREATMENT OF FLOUR OR DOUGH FOR BAKING, e.g. BY ADDITION OF MATERIALS; BAKING; BAKERY PRODUCTS (preservation of flour or dough before baking A23B40/00; preservation of bakery products A23B45/00)

## Abstract

Encapsulated yeast composition especially developed for use with frozen doughs comprising food grade fibers having adsorbed thereon liquid cream yeast, the particles being coated with a continuous layer of impervious thermoplastic material, frozen dough containing the encapsulated yeast composition and the method for making the encapsulated yeast.

## Claims

### Claim 1

An encapsulated yeast composition comprising finely divided, free-flowing particles, each containing a plurality of food grade fibers having adsorbed thereon liquid cream yeast, the adsorbent particles being coated with a continuous layer of moisture-impervious thermoplastic material.

### Claim 2 (depends on 1)

The composition of claim 1, in which the size of the coated particles is 50-1000 micrometers.

### Claim 3 (depends on 1)

The composition of claim 1, in which the impervious thermoplastic material is a hydrogenated vegetable oil.

### Claim 4 (depends on 1)

The composition of claim 1, in which the amount of adsorbed cream yeast is at the maximum adsorption level of the fiber.

### Claim 5 (depends on 1)

The composition of claim 1, in which the fibrous adsorbent material is ground oat hulls.

### Claim 6 (depends on 1)

The composition of claim 1, in which the liquid cream yeast is comprised of 15-30% yeast and 85-70% water.

### Claim 7 (depends on 1)

The composition of claim 1, in which the moisture-impervious thermoplastic material layer contains dispersed therein finely divided particles of ascorbic acid.

### Claim 8 (depends on 1)

The composition of claim 1, in which the impervious material layer contains finely divided particles of alkali metal or ammonium carbonate.

### Claim 9 (depends on 8)

The composition of claim 8, in which a mixture of finely divided particles of ascorbic acid and alkali metal carbonate or ammonium carbonate are contained in the impervious layer.

### Claim 10 (depends on 1)

The composition of claim 1 in which the moisture-impervious thermoplastic coating layer has a thickness of 10-800 micrometers.

### Claim 11

A frozen dough composition comprising a mixture of flour, water, salt and yeast, characterized in that the yeast component is an encapsulated yeast composition comprised of finely divided free-flowing particles, each containing a plurality of food grade fibers, having adsorbed thereon liquid cream yeast, the adsorbent particles being coated with a continuous layer of moisture-impervious thermoplastic material.

### Claim 12

A method for making encapsulated yeast comprising the sequential steps:
(1) providing finely divided particles of food grade fiber having a particle size of 50-1000 micrometers;
(2) with continuous agitation by which the surfaces of the fiber particles are repetitively exposed, intermittently spraying liquid cream yeast onto the exposed surfaces of the fiber (a) in a total amount to adsorb the liquid cream yeast to a preselected level, and (b) at a rate such that the particles remain free-flowing;
(3) with continuous agitation by which the surfaces of the fiber particles are repetitively exposed, intermittently spraying molten thermoplastic material onto the exposed surfaces of the fiber particles (a) in a total amount sufficient to form a continuous coating thereon, (b) at a rate such that the particles remain free-flowing, and (c) the interval between spraying cycles is sufficient to effect solidification of the coating material on the particles before any further spraying.