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Method for preparing freeze-dried banana

A banana and freeze-drying technology, which is applied in the food field, can solve the problems that there are no literature reports on freeze-dried bananas, and no related reports on quick-frozen slices of bananas.

Active Publication Date: 2011-04-27
安徽本纪控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But have not seen the literature report of freeze-dried banana yet, have not seen the related report of quick-frozen section of banana yet

Method used

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  • Method for preparing freeze-dried banana

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Select 300kg of bananas with a maturity of 90% and no pests and diseases, soak them in a sodium hypochlorite solution with a concentration of 0.2g / L for 15 minutes, then wash them with drinking water, peel the bananas, and put them in a freezer for quick freezing to -10°C , then cut into slices with a thickness of 6mm, freeze to -35°C, and then put the frozen banana slices into the drying bin of a freeze-vacuum dryer for drying treatment to obtain freeze-dried bananas. The parameters in the freeze-vacuum dryer The control process is shown in Table 1.

[0011] Table 1. Parameter control in the freeze vacuum dryer

[0012]

Embodiment 2

[0014] In this embodiment, except that the sodium hypochlorite solution with a concentration of 0.5 g / L was used to soak the bananas for 10 minutes, the remaining process steps and process parameters were the same as those in Example 1.

Embodiment 3

[0016] Select 500kg of bananas with a maturity of 70% and no pests and diseases, soak them in 10g / L hydrogen peroxide solution for 10 minutes, then wash them with drinking water, peel the bananas, and put them in the freezer for quick freezing to -15°C. Cut into slices with a thickness of 8mm, freeze to -55°C, and then put the frozen banana slices into the drying bin of a freeze-vacuum dryer for drying treatment to obtain freeze-dried bananas. The parameter control process in the freeze-vacuum dryer See Table 2.

[0017] Table 2. Parameter control in the freeze vacuum dryer

[0018]

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Abstract

The invention discloses a method for preparing freeze-dried banana. The method comprises the following operating steps of: selecting bananas which has over 70 percent degree of ripeness and are not damaged by diseases and insects; sterilizing by a fruit and vegetable sterilizing agent; rinsing clean by using drinking water; peeling the bananas; taking banana flesh; placing in a refrigeration house to quick-freeze to -8 to -15 DEG C; cutting into slices; freezing to -35 to -55 DEG C; placing the frozen banana slices into a vacuum freeze dryer; and controlling vacuum degree to be between 20 and70Pa, cold hydrazine temperature to be between -40 and -60 DEG C, heating plate temperature to be between 50 and 100 DEG C and drying time to be between 10 and 20 hours to obtain the freeze-dried banana. By the method, the obtained freeze-dried banana food keeps color, smell, mouthfeel, shapes and nutrient components of fresh banana.

Description

technical field [0001] The invention relates to the technical field of food, in particular to a preparation method of freeze-dried bananas. technical background [0002] Banana is a specialty of tropical fruit in southern my country. It has high nutrition and low calories. It contains phosphorus called "salt of wisdom", rich in protein, sugar, potassium, vitamins A and C, and has a lot of dietary fiber, which is quite good. nutritious food. [0003] In addition to raw bananas, there are banana slices and dried bananas made by hot air drying, banana powder made by spray drying, and banana drinks. But do not see the bibliographical report of freeze-dried banana as yet, also do not see the relevant report of the quick-frozen section of banana. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a method for preparing freeze-dried bananas by using freeze-vacuum drying technology, so that dried bananas can keep the color...

Claims

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Application Information

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IPC IPC(8): A23L1/212A23L1/015A23L19/00A23L5/20
Inventor 刘圣本陈伟峰苏小明何力陈美芬玉炳冠
Owner 安徽本纪控股有限公司
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