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Blueberry dry powder and method for preparing blueberry dry powder through freeze drying technology

A technology of blueberry fruit and dry powder, which is applied in the direction of food preparation, application, food science, etc., and can solve the problems that the preparation process of blueberry fruit dry powder has not been reported.

Inactive Publication Date: 2012-10-03
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although there have been reports on the use of freeze-drying technology to prepare dried products of certain fruits (such as strawberries, mulberries, etc.), the preparation process of blueberry fruit dry powder using the freeze-drying method and using maltodextrin as a carrier has not yet been reported.

Method used

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  • Blueberry dry powder and method for preparing blueberry dry powder through freeze drying technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1. prepare Duke's blueberry fruit dry powder

[0049] Use an automatic cleaning machine to clean the picked fresh blueberries of the Duke variety until there is no dirt residue, and then use a homogenizer to crush the blueberries into a uniform and fine mud to obtain blueberry puree; accurately weigh 50g of maltodextrin powder, add 400mL of distilled water to completely dissolve the maltodextrin to obtain a maltodextrin solution; weigh 300g of blueberry puree, measure 250mL of maltodextrin solution, and put the blueberry puree and maltodextrin solution in a homogenizer Mix and homogenize in medium for 10 minutes to obtain the blueberry puree sample containing carrier; The surface glass of the puree sample was sealed with plastic wrap, and placed in a -40°C refrigerator for pre-freezing for 6 hours to obtain a pre-frozen sample of the blueberry puree before freeze-drying; the pre-frozen sample was taken out of the -40°C refrigerator, and sealed with Remove th...

Embodiment 2

[0051] Embodiment 2. Preparation of Duke's blueberry fruit dry powder

[0052] Use an automatic cleaning machine to clean the picked fresh blueberries of the Duke variety until there is no dirt residue, and then use a homogenizer to crush the blueberries into a uniform and fine mud to obtain blueberry puree; accurately weigh 50g of maltodextrin powder, add 400mL of distilled water to completely dissolve the maltodextrin to obtain a maltodextrin solution; weigh 300g of blueberry puree, measure 150mL of maltodextrin solution, and put the blueberry puree and maltodextrin solution in a homogenizer Mix and homogenize in medium for 10 minutes to obtain the blueberry puree sample containing carrier; The surface glass of the puree sample was sealed with plastic wrap, and placed in a -40°C refrigerator for pre-freezing for 6 hours to obtain a pre-frozen sample of the blueberry puree before freeze-drying; the pre-frozen sample was taken out of the -40°C refrigerator, and sealed with Re...

Embodiment 3

[0054] Embodiment 3. Preparation of Duke's blueberry fruit dry powder

[0055] Use an automatic cleaning machine to clean the picked fresh blueberries of the Duke variety until there is no dirt residue, and then use a homogenizer to crush the blueberries into a uniform and fine mud to obtain blueberry puree; accurately weigh 50g of maltodextrin powder, add 400mL of distilled water to completely dissolve the maltodextrin to obtain a maltodextrin solution; weigh 200g of blueberry puree, measure 400mL of maltodextrin solution, and put the blueberry puree and maltodextrin solution in a homogenizer Mix and homogenize in medium for 10 minutes to obtain the blueberry puree sample containing the carrier; The watch glass of the puree sample was sealed with plastic wrap, and placed in a -40°C refrigerator for pre-freezing for 6 hours to obtain a pre-frozen sample of the blueberry puree before freeze-drying; the pre-frozen sample was taken out of the -40°C refrigerator, and sealed with ...

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Abstract

The invention provides blueberry dry powder and a method for preparing blueberry dry powder through freeze drying technology. Blueberry dry powder semi-finished products can be obtained through the steps of mixing blueberry pulp and malt dextrine solution in proportion, homogenating, prefrozening, freezing, drying and the like after cleaning and crashing; and through quick grinding and screening to the blueberry dry powder semi-finished products, blueberry dry powder product can be obtained, sealed and conserved. The blueberry dry powder product can be widely applied to foods and health products, and particularly used for preparing various blueberry dry powder and also can be used for the preparation of more berry dry powder. In the invention, malt dextrine carrier is used, a freeze drying method is used, the dry powder is looser, and the obtained dry powder is fine and is more suitable for commercialization. Compared with the dry powder which is not added with carries, the blueberry dry powder provided by the invention has the characteristics of less thick liquid glucose on the surface, low wet absorbing speed, low damping speed and the like.

Description

technical field [0001] The invention relates to a dried blueberry fruit powder and a preparation method thereof, in particular to a dried blueberry fruit powder and a method for preparing the dried blueberry fruit powder by freeze-drying technology. Background technique [0002] Blueberry, scientific name Vaccinium, belongs to Ericaceae (Ericaceae), Vaccinium (Vaccinium) plant. Blueberry fruit is not only rich in vitamins A, B, C, E and K, Fe, Zn, Ca and other mineral elements, but also anthocyanins contained in blueberries, which belong to polyphenols and flavonoids, have Abundant physiological activities, such as: antibiotic effect, anti-free radical effect, anti-visual degradation and anti-arteriosclerosis and thrombosis. Regular consumption of blueberry products can significantly enhance vision, eliminate visual fatigue, and enhance heart function; it has a therapeutic effect on capillary diseases caused by diabetes; it can also delay the aging of brain nerves and preve...

Claims

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Application Information

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IPC IPC(8): A23L1/212A23L1/09A23L19/00
Inventor 吕兆林林西张柏林郭弘璇
Owner BEIJING FORESTRY UNIVERSITY
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