Method for preparing pregelatinized sweet potato powder by utilizing microwave

A technology of pregelatinization and sweet potato flour, which is applied in the field of microwave preparation of pregelatinization sweet potato flour, which can solve the problems of insufficient lubricity of taste and easy retrogradation and precipitation

Inactive Publication Date: 2013-06-26
INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent focuses on the deployment of sweet potato nutritional soup raw materials, and the sweet potato raw materials adopt the technology of blanching, cooling, and drying. The processing is a reversible gelatinization process of starch. insufficient

Method used

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  • Method for preparing pregelatinized sweet potato powder by utilizing microwave
  • Method for preparing pregelatinized sweet potato powder by utilizing microwave

Examples

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example 1

[0020] A method for preparing pre-gelatinized sweet potato powder by microwave The specific implementation steps are as follows: 1. Select 5 kg of fresh "Longshu No. 5" sweet potato and rinse it with clean water; 3. Place the sweet potato in a tunnel-type microwave device, microwave gelatinization for 3 minutes, and the microwave power is 50kw, which is equivalent to 10w / g of microwave power per unit mass; ④Put the sweet potato after microwave gelatinization in Carry out two-stage hot air drying treatment in the oven, the first stage temperature is 60°C, the time is 100 minutes, the second stage temperature is 80°C, and the time is 5 hours; ⑤ Grind the dried sweet potatoes to a fineness of 100 mesh , that is, the pregelatinized sweet potato flour is a product group. Contrast group: other process conditions remain unchanged, only the microwave power per unit mass is changed, 6w / g, 8w / g, 12w / g, recorded as comparison group 1, comparison group 2, and comparison group 3. Brew pre...

example 2

[0024] A method for preparing pregelatinized sweet potato flour with microwaves. The specific implementation steps are as follows: 1. Select 5 kg of fresh "Xinong 431" sweet potatoes and rinse them with clear water; 4mm dry potato chips; ③Put the sweet potato in a tunnel-type microwave device, microwave gelatinization for 6 minutes, and the microwave power is 40kw, which is equivalent to the microwave power per unit mass of 8w / g; ④Place the sweet potato after microwave gelatinization in an oven Carry out two-stage hot air drying treatment in the middle, the first stage temperature is 58 ℃, time is 100 minutes, the second stage temperature is 75 ℃, time is 6 hours; ⑤ the sweet potato after drying is pulverized, fineness is 100 mesh, The obtained pregelatinized sweet potato powder is a product group. Contrast group: other technological conditions are constant, and drying process is changed into common hot air drying, is recorded as contrast group, compares drying time, and resul...

example 3

[0028] A method for preparing pregelatinized sweet potato flour with microwaves. The specific implementation steps are as follows: 1. select 5 kg of fresh "Smoke Potato 25" sweet potatoes, and rinse them with clear water; 5mm dry potato chips; ③ put the sweet potato in the tunnel microwave device, microwave gelatinization for 5 minutes, the microwave power is 50kw, which is equivalent to the microwave power per unit mass of 10w / g; ④ put the microwave gelatinized sweet potato in the oven Carry out two-stage hot air drying treatment in the middle, the first stage temperature is 62 ℃, time is 80 minutes, the second stage temperature is 85 ℃, time is 6 hours; That is, pregelatinized sweet potato flour is obtained.

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Abstract

The invention provides a method for preparing pregelatinized sweet potato powder by utilizing microwave and belongs to the technical field of deep processing of agricultural products. The method provided by the invention comprises the following steps of: washing sweet potatoes, peeling, slitting, gelatinizing by utilizing microwave, carrying out two-section hot air drying, smashing and packaging to obtain the finished product. By adopting the method provided by the invention, raw materials can be provided for sweet potato food processing, and loss caused when fresh sweet potatoes can not be timely processed and rotted can also be alleviated. The method provided by the invention is simple in technical process and easy to implement, short time is consumed for processing, the pregelatinized sweet potato powder product has a unique sweet potato flavour, hardly gets raw, instantly becomes paste when mixed with water, and is fragrant, sweet and lubricative in taste; and the pregelatinized sweet potato powder product can be prepared into related products such as sweet potato thick soup, sweet potato cakes and sweet potato ice cream after being mixed with other materials properly or subjected to subsequent processing.

Description

technical field [0001] The invention relates to a method for preparing pregelatinized sweet potato powder by microwave, and belongs to the technical field of deep processing of agricultural products. Background technique [0002] Sweet potato, also known as sweet potato, sweet potato, etc., is an annual plant of Convolvulaceae, with spindle-shaped roots and khaki or purple-red skin. According to the records in "Compendium of Materia Medica", sweet potatoes have the effects of "tonifying deficiency, benefiting energy, strengthening spleen and stomach, and strengthening kidney yin". Modern scientific research shows that sweet potato is rich in dietary fiber, which can promote the peristalsis of gastrointestinal tract, and has the effect of preventing and treating constipation. At the same time, mucin in sweet potato can prevent the deposition of cholesterol on the blood vessel wall, thereby preventing arteriosclerosis and coronary heart disease. my country is the largest prod...

Claims

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Application Information

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IPC IPC(8): A23L1/2165A23L19/15
Inventor 陈君琛沈恒胜翁敏劼赖谱富杨艺龙
Owner INST OF AGRI ENG TECH FUJIAN ACAD OF AGRI SCI
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