Material for de-dusting granular enzyme preparations

Abstract

The invention relates to a granular de-dusting material comprising 30-60 wt. % cold-swelling potato starch, 5-40 wt. % vegetable oil, 5-35 wt. % flour, all weight percentages based on dry weight of the granular de-dusting material. The invention further relates to a method for preparing a de-dusted enzyme product, comprising contacting a granular enzyme preparation, containing dust particles, with a granular dedusting material according to the invention, whereby the dust particles adhere to the granular de-dusting material, whereby the de-dusted enzyme product is obtained. The invention further relates to a de-dusted enzyme product.

Claims

1. Method for preparing a de-dusted enzyme product, comprising contacting a granular enzyme preparation, containing dust particles, with a granular dedusting material, whereby the dust particles adhere to the granular de-dusting material, whereby the de-dusted enzyme product is obtained, wherein said de-dusting material is a granular de-dusting material comprising a mixture of 30-60 wt. % cold-swelling potato starch, 5-40 wt. % vegetable oil, 5-35 wt. % flour, all weight percentages based on dry weight of the granular de-dusting material.

2. Method according to claim 1, wherein the granular de-dusting material and the granular enzyme preparation are contacted in a weight to weight ratio granular de- dusting material to granular enzyme preparation of 0.5:99.5 to 5:95.

3. Method according to claim 2, wherein the weight to weight is in the range of 1:99 to 15:85.

4. Method according to claim 3, wherein the weight to weight ratio is in the range of 2.5:97.5 to 3.5:96.5.

5. Method according to claim 1, wherein the enzyme preparation comprises one or more enzymes selected from the group of fungal amylases, bacterial amylases, maltogenic amylases, xylanases, lipases, phospholipases, galactolipases, proteases, peptidases, oxidases, transglutaminases, laccases and amyloglucosidases.

6. Method according to claim 1, wherein a de-dusted enzyme product is obtained that is essentially free of dust using the Heubach dust analysis method.

7. Granular de-dedusted enzyme product at least composed of one or more enzymes, having an enzyme content of 5-99.5 wt. %, a content of the granular material of 0.5-30 wt. % and a content of 0-65 wt. % of the one or more further ingredients, based on dry weight of the product, said granular material comprising a mixture of 30-60 wt. % cold-swelling potato starch, 5-40 wt.% vegetable oil, 5-35 wt. % flour, all weight percentages based on dry weight of the granular de-dusting material.

8. A granular de-dusted enzyme product according to claim 7, having an enzyme content of 10-95 wt. % and a content of the granular material of 1-5 wt. %, in based on dry weight of the product.

9. A granular de-dusted enzyme product according to claim 8, comprising at least one enzyme selected from the group of fungal amylases, bacterial amylases, maltogenic amylases, xylanases, lipases, phospholipases, galactolipases, proteases, peptidases, oxidases, transglutaminases, laccases and amyloglucosidases.

10. Method for preparing a baked product comprising preparing a dough using a granular enzyme product according to claim 7, and baking the dough comprising the enzyme or enzymes of the granular enzyme product.

11. Method according to claim 1, wherein the granular de-dusting material comprises 30-45 wt. % cold-swelling potato starch, 30-35 wt. % vegetable oil, 20-30 wt. % flour.

12. Method according to claim 1, wherein the granular de-dusting material essentially consists of vegetable ingredients.

13. Method according to claim 1, wherein said cold-swelling potato starch is pre-gelatinised.

14. Method according to claim 1, wherein said vegetable oil comprises at least one oil or at least one fraction of an oil selected from the group of soybean oil, canola oil, sunflower oil, safflower oil, peanut oil, cottonseed oil, coconut oil, palm oil, and rice bran oil.

15. Method according to claim 14, wherein said vegetable oil comprises sunflower oil.

16. Method according to claim 14, wherein said vegetable oil is dewatered oil.

17. Method according to claim 14, wherein said vegetable oil comprises high oleic acid sunflower oil.

18. Method according to claim 1, wherein said vegetable oil comprises at least one saturated fatty acid, at least one mono-unsaturated fatty acid and at least one poly-unsaturated fatty acid.

19. Method according to claim 18, wherein said vegetable oil has a saturated fatty acid content of 5-10 wt. %, a monounsaturated fatty acid content of 80-90 wt. %, and a poly-unsaturated fat content of 5-10 wt. %, based on total fatty acids.

20. Method according to claim 1, wherein the flour is cereal flour or Fabaceae flour.

21. Method according to claim 20, wherein the flour comprises cereal flour.

22. Method according to claim 20, wherein the flour comprises wheat flour.

23. Method according to claim 20, wherein the flour comprises granulated, heat-treated flour.

24. Method according to claim 1, wherein the material is free-flowing.

25. The method according to claim 21, the flour comprises 50-100 wt. % cereal flour, based on total flour.

26. The method according to claim 22, wherein the flour comprises 50-100wt. % wheat flour, based on total flour.

27. The method according to claim 15, wherein said vegetable oil comprises 50-100% sunflower oil.

Description

EXAMPLE 1

(1) Formulation example:

(2) Cold-swelling potato starch: about 43 wt. %

(3) Cereal flour (wheat, heat treated): about 22 wt. %

(4) Vegetable oil: about 35 wt. % of which: 6-10 wt. % in total of palmitic acid and/or stearic acid, 80-88 wt. % oleic acid and 6-10 wt. % polyunsaturated fatty acid (all based on total fatty acids)

(5) Moisture content: less than 6 wt. % (from ingredients, no added water)

(6) The de-dusting material was obtained by blending the ingredients at room temperature.

EXAMPLE 2

(7) 43 wt. % cold swelling potato starch (moisture content <6 wt. %), 35 wt. % high oleic acid sunflower oil (refined, essentially free of water) and 22 wt. % heat-treated wheat flour (moisture content <6 wt. %)) were blended at room temperature and granulated.

(8) The resultant granular de-dusting material was blended at room temperature with either a fungal amylase, with a bacterial amylase or a fungal lipase (at a wt. to wt. ratio of 3:97). Dust content was determined for the enzymes without the de-dusting material and after blending with the de-dusting materials. The Heubach test and a perception test by experienced operators were used. The results are shown in the following table.

(9) TABLE-US-00001 Dustiness as perceived by process operators experienced in working with Dust (mg/kg) Example Product enzymes Heubach test Ref. 2A Fungal Amylase Extremely dusty 1970 Ex. 2A Fungal amylase Not dusty 0 with 3% de- dusting material according to the invention Ref. 2B Bacterial Amylase Quite dusty 1060 Ex. 2B Bacterial Amylase Not dusty 0 1 with 4.8% de- dusting material according to the invention Ref 2C Fungal Lipase Quite dusty 1274 Ex. 2B Fungal Lipase Not dusty 58 with 3% de- dusting material according to the invention

EXAMPLE 3

(10) 43 wt. % cold swelling potato starch (moisture content <6 wt. %), 35 wt. % high oleic acid sunflower oil (refined, essentially free of water) and 22 wt. % heat-treated wheat flour (moisture content <6 wt. %)) were blended at room temperature and granulated to form a granular de-dusting material.

(11) Another granular de-dusting material was made in the same manner with the same ingredients, except that palm oil was used instead of the high oleic oil.

(12) Another granular de-dusting material was made in the same manner with the same ingredients, except that regular sunflower oil was used instead of the high oleic oil.

(13) The flowing properties of all three de-dusting materials were compared and it was found that the flowing properties of the material comprising high oleic sunflower oil were much better, thereby facilitating further handling and use in de-dusting applications. The flowing properties of the de-dusting material containing regular sunflower oil and of the material containing the palm oil were comparable

EXAMPLE 4

(14) 43 wt. % cold swelling potato starch (moisture content <6 wt. %), 35 wt. % high oleic sunflower oil (refined, essentially free of water) and 22 wt. % heat-treated wheat flour (moisture content <6 wt. %)) were blended at room temperature and granulated to form a granular de-dusting material.

(15) Another granular de-dusting material was made in the same manner with the same ingredients, except that regular (not heat treated) wheat flour was used instead of the heat treated wheat flour.

(16) It was found that a more homogeneous blend was obtained with the heat-treated flour and that the flowing properties of the de-dusting material comprising the heat-treated flour were much better, thereby facilitating further handling and use in de-dusting applications.

(17) Further, a material was made of 43 wt. % cold swelling potato starch (moisture content <6 wt. %), 35 wt. % high oleic sunflower oil (refined, essentially free of water)but with 22 wt. % heat-treated soy flour (moisture content <6 wt. %)). The flowing properties were much lower than for the material made with heat-treated wheat flower, and also significantly lower than for the de-dusting material made with wheat-flour that had not been subjected to heat treatment.