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Solid Kefir dairy product and preparation method thereof

A technology of kefir milk products and kefir grains, which is applied in the direction of milk preparations, dairy products, applications, etc., and can solve problems such as stimulating taste, easy expansion of the package, and compound bacterial powder that cannot achieve the fermentation effect of kefir grains , to achieve the effects of long shelf life, expanded use range, good market prospects and economic benefits

Active Publication Date: 2014-03-12
JUNLEBAO DAIRY GRP CO LTD
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Problems solved by technology

[0006] Chinese invention patent application 200610112456.2 discloses a kefir freeze-dried bacterial powder and its preparation method and application. The kefir freeze-dried bacterial powder is obtained by activating, proliferating and freeze-drying the kefir grains. It is mainly used in the production of kefir as a direct-injection strain, which solves the problem that the compound bacterial powder cannot achieve the fermentation effect of kefir grains. However, as a kind of strain starter produced by kefir, due to Kefir fermented milk has serious acidification after storage period, it is easy to expand the bag, and the taste is irritating, etc. It is still impossible to realize large-scale industrial production of kefir

Method used

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preparation example Construction

[0051] Preparation of kefir fermented milk: Inoculate kefir grains into fresh sterilized milk according to the weight ratio of 3-7%, mix well, cultivate at 20-35°C for 15-28 hours, and filter to obtain kefir Fermented milk and kefir grains are preserved for later use.

[0052] Wherein, as the kefir grains, conventional kefir grains can be used. For example, the above-mentioned kefir grains refer to kefir grains that are preserved artificially from generation to generation and have the structure and characteristics of kefir grains. The weight ratio of 3-10% refers to the percentage by weight of kefir grains in fresh sterilized milk.

[0053] In the activation of kefir grains, it is preferable to inoculate the kefir grains into fresh sterilized milk in a proportion of 5% by weight, and culture them at 25° C. for 24 hours.

[0054] In the proliferation of kefir grains, the proportion of activated kefir grains inoculum weight was 5%. The weight ratio of 3-7% refers to the percen...

Embodiment 1

[0066] Strain activation: Inoculate kefir grains into fresh sterilized milk at 10% inoculation ratio and incubate for 24 hours at 25°C, filter to obtain kefir grains, repeat the above steps two to three times, and obtain activated kefir grains grain.

[0067] Strain propagation: Inoculate activated kefir grains into fresh sterilized milk at an inoculation ratio of 3%, and then add 0.5% by weight of yeast extract (produced by Beijing Boxing Biotechnology Co., Ltd. , trade name yeast extract powder, product number: 01-012) and 0.001% MnSO 4 ·H 2 O, mix well, and incubate at 25°C for 24 hours. After curdling, filter the kefir grains, wash them with sterile water, and then inoculate them into fresh sterilized milk at an inoculation ratio of 3%, and cultivate continuously for 7 days. , the kefir grain after multiplication is 4.3 times that before multiplication.

Embodiment 2

[0069] Strain activation: inoculate kefir grains into fresh sterilized milk at 20°C for 20 hours at an inoculation ratio of 7%, filter to obtain kefir grains, repeat the above steps two to three times, and obtain activated kefir grains grain.

[0070] Strain propagation: Inoculate activated kefir grains into fresh sterilized milk at an inoculation ratio of 5%, and then add 0.5% by weight of yeast extract (produced by Beijing Boxing Biotechnology Co., Ltd. , trade name yeast extract powder, product number: 01-012), 1.5% peptone (produced by Beijing Boxing Biotechnology Co., Ltd., peptone, product number: 01-001), 0.001% MnSO 4 .H 2 O, 0.002% MgSO 4 .7H 2 O, mix well, incubate at 20°C for 24 hours, filter the kefir grains after curdling, wash them with sterile water, then inoculate them into fresh sterilized milk at an inoculation ratio of 5%, and culture continuously for 7 days , the kefir grain after multiplication is 5.6 times of that before multiplication.

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Abstract

The invention relates to a solid Kefir dairy product and a preparation method thereof. The preparation method of the solid Kefir dairy product includes placing Kefir at 4-10DEG C for 30-120min, then pre-freezing at -20--80DEG C for 3-12h, and performing freeze drying to obtain the Kefir dairy product. The product has a long guarantee period, the viable bacteria quantity and pH during the storage period remain unchanged, the polysaccharide content is high, the traditional healthcare function of the Kefir, the problems that the Kefir is serious in post-acidification, prone to blown package and stimulus in taste are solved, and the dairy product is suitable for large-scale industrial production and capable of being stored for a long time and being taken freely as required.

Description

technical field [0001] The invention relates to a kefir product, in particular to a solid kefir milk product and a preparation method thereof. Background technique [0002] Kefir milk (Kefir) is a fermented milk product that originated in the Caucasus mountains of the former Soviet Union. It has a variety of health functions. and other pathogenic bacteria have a strong inhibitory effect, regular consumption of kefir milk can maintain the dominant role of beneficial bacteria in the human gastrointestinal tract; probiotics in kefir fermented milk can hydrolyze most of the lactose in milk into The beneficial L(+)-lactic acid only produces 2%-5% D(-)-lactic acid, which is far lower than ordinary yogurt (25%-60%), so it can be used as a drink for patients with lactose intolerance; Phil milk contains capsular polysaccharides that inhibit the proliferation of cancer cells and four-carbon dicarboxylic acids that dissolve cancer cells, which can reduce the incidence of cancer. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23C9/12A23C9/13
Inventor 魏立华朱宏王世杰康志远陆淳王华李丽华
Owner JUNLEBAO DAIRY GRP CO LTD
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