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Method for preparing yeast extract (YE) from Chinese red dates

A technology for yeast flavoring and red dates, applied in the field of food condiments, can solve the problems of tediousness, many pre-order steps, unfavorable large-scale production of yeast flavoring, etc., and achieve the effects of improving economic value, expanding utilization rate and low price

Inactive Publication Date: 2012-01-25
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cost of producing yeast flavor with these raw materials is low, there are too many pre-procedure steps in the production of yeast flavor, which is too cumbersome, which is not conducive to the large-scale production of yeast flavor

Method used

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  • Method for preparing yeast extract (YE) from Chinese red dates
  • Method for preparing yeast extract (YE) from Chinese red dates
  • Method for preparing yeast extract (YE) from Chinese red dates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Prepare jujube juice

[0030] Remove the moldy and rotten fruits from dried or fresh red dates, clean them, crush the red dates with a grinder, take the broken red dates, add water 6 times the weight of the red dates, and use an extraction tank or a sandwich pot for heat treatment at 95-100°C for 1 hour. Separation of jujube juice by foot type centrifuge, add water 3 times the mass of jujube to the jujube dregs, put it into an extraction tank or jacketed pot, keep it warm at 95-100°C for 30 minutes, and use a three-leg centrifuge to separate the jujube juice Merge the raw jujube juice extracted twice, and use an automatic discharge centrifuge to centrifuge at a speed of 3000 rpm after coarse filtration with a 200-mesh duplex filter to obtain the raw jujube juice with a soluble solid content of 4% to 5%. The juice is concentrated under reduced pressure in a vacuum decompression concentrating pot to a soluble solid content of 15% under the condition of a vacuum of 0.08...

Embodiment 2

[0058] In the preparation yeast seed liquid step 2 of embodiment 1, the nutrient solution in the glass bottle is transferred to the 250L seed tank with agitation to expand cultivation, and the nutrient solution in the seed tank is jujube juice with 15% soluble solids , the inoculum size is 2% of the jujube juice volume of 15% soluble solids, 160 rev / min stirring, 30 DEG C of stirring and cultivating 24~28 hours, other steps of this step are identical with embodiment 1. Other steps are the same as in Example 1 to prepare yeast flavoring.

Embodiment 3

[0060] In the preparation yeast seed liquid step 2 of embodiment 1, the nutrient solution in the glass bottle is transferred to the 250L seed tank with agitation to expand cultivation, and the nutrient solution in the seed tank is jujube juice with 15% soluble solids , the inoculum size is 4% of the jujube juice volume with 15% soluble solids, stirred at 250 rpm, and cultivated with stirring at 30°C for 24 to 28 hours. Other steps of this step are the same as in Example 1. Other steps are the same as in Example 1 to prepare yeast flavoring.

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Abstract

The invention provides a method for preparing a yeast extract (YE) from Chinese red dates. The method comprises the following steps: preparing Chinese red date juice; preparing yeast seed liquid; preparing yeast sludge; breaking a yeast cell wall; carrying out enzyme inactivation; concentrating; and drying. Tests for the YE prepared by the embodiment 1 of the invention show that the YE yield is 9.78g / L, the dry matter content is 95.4%, the total nitrogen content is 5.12%, the amino acid nitrogen content is 2.39%, and the nucleic acid content is 0.41%. Therefore, the YE meets the requirements for flavor products shown in the standard GB / T 23530-2009 yeast extract and can be taken as a food seasoning.

Description

technical field [0001] The invention belongs to the technical field of food condiments, and in particular relates to a preparation method of jujube yeast flavoring. Background technique [0002] Jujube, also known as jujube, is rich in nutrition and has a long history. It has been listed as one of the "five fruits" since ancient times. Jujube meat is sweet in taste and rich in nutrients such as sugars, organic acids, vitamins, and trace elements, among which the most prominent is the high vitamin content, which enjoys the reputation of "natural vitamin pills". Jujube is not only nutritious, but also has high medical and health care value. Jujube can improve the phagocytic function of the mononuclear-phagocyte system in the body, protect the liver, and enhance physical strength. It is one of the fruits that our people love very much. In addition to some fresh dates, red dates are mostly used for drying, so dried dates are more common in the sales market. In recent years, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/23A23L27/24
Inventor 张宝善董婷婷陈锦屏王军
Owner SHAANXI NORMAL UNIV
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