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Soluble whole Chinese yam powder and preparation method

A yam powder and soluble technology, applied in the chemical industry, can solve the problems of heavy starch granules, stagnant research and development, affecting product appearance and taste, etc., and achieve the effects of high yield, simple method, good appearance and solubility

Inactive Publication Date: 2013-05-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because yam starch is difficult to dissolve in water, and yam is a plant rich in starch, many problems will be encountered when developing health care products with yam as the main raw material. Stratification occurs, which affects the appearance and taste of the product; when making instant powder, because the starch is insoluble in water, the product cannot be completely dissolved and affects the quality of the product, resulting in the stagnation of product development with yam as the main raw material

Method used

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  • Soluble whole Chinese yam powder and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of soluble yam powder, comprising the steps of:

[0022] (1) Take the freshly washed and peeled yam, slice it, and dry it in a blast drying oven at 60°C to obtain dried yam slices;

[0023] (2) Crush the dried yam tablets and pass through a 140-mesh sieve to obtain yam powder;

[0024] (3) Dissolve 1g of NaOH and 1g of chloroacetic acid in 80ml of ethanol aqueous solution with a volume concentration of 80%, add 10g of yam powder and mix evenly, place in a magnetic stirrer and stir at a constant speed. The reaction temperature is 50°C and the reaction time is 2 hours. Cool naturally to room temperature, filter, wash the precipitate with ethanol for 5 times, then vacuum-dry the precipitate at 50°C, pulverize the dry matter, and pass through a 160-mesh sieve to obtain the whole powder of modified yam.

Embodiment 2

[0026] A preparation method of soluble yam powder, comprising the steps of:

[0027] (1) Take the freshly washed and peeled yam, slice it, and dry it in a blast drying oven at 60°C to obtain dried yam slices;

[0028] (2) Crush the dried yam tablets and pass through a 140-mesh sieve to obtain yam powder;

[0029] (3) Dissolve 1.5g of NaOH and 1.5g of chloroacetic acid in 80ml of ethanol aqueous solution with a volume concentration of 80%, add 10g of yam powder and mix evenly, place in a magnetic stirrer and stir at a constant speed. The reaction temperature is 50°C and the reaction time is 2 hours; naturally cool to room temperature, filter, wash the precipitate with ethanol for 5 times, then vacuum-dry the precipitate at 50°C, pulverize the dry matter, and pass through a 160-mesh sieve to obtain the soluble yam powder.

Embodiment 3

[0031] A preparation method of soluble yam powder, comprising the steps of:

[0032] (1) Take the freshly washed and peeled yam, slice it, and dry it in a blast drying oven at 60°C to obtain dried yam slices;

[0033] (2) Crush the dried yam tablets and pass through a 140-mesh sieve to obtain yam powder;

[0034] (3) Dissolve 2g of NaOH and 2g of chloroacetic acid in 80ml of ethanol aqueous solution with volume concentration of 80%, add 10g of yam powder

[0035] Mix well, place in a magnetic stirrer and stir at a constant speed, the reaction temperature is 50°C, and the reaction time is 2 hours; naturally cool to room temperature, filter, wash the precipitate with ethanol for 5 times, then vacuum-dry the precipitate at 50°C, and crush the dry matter , through a 160-mesh sieve to obtain soluble yam powder.

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Abstract

The invention discloses soluble whole Chinese yam powder and a preparation method. The preparation method comprises the following steps of: cleaning and hulling fresh Chinese yam, slicing and drying the cleaned and hulled Chinese yam to obtain dry Chinese yam slices; crushing the dry Chinese yam slices and sieving the crushed Chinese yam slices by a 120-180-mesh sieve to obtain Chinese yam powder; dissolving 1.5g-3g of NaOH and 1.5g-3g of chloroacetic acid in 60-100ml of ethanol water of which the volume concentration is 80%, adding 10g of Chinese yam powder into the solution, mixing the mixture, and stirring the mixture under the conditions that the reaction temperature is 45-55 DEG C, and the reaction time is 2-3 hours; and naturally cooling the product to the room temperature, filtering the product, washing a precipitate by ethanol, then performing vacuum drying on the precipitate, crushing the dried precipitate, and sieving the dried precipitate by a 100-160-mesh sieve, to obtain the soluble whole Chinese yam powder. The soluble whole Chinese yam powder provided by the invention has a good appearance and good solubleness as well as high yield, and the method provided by the invention is simple, convenient and suitable for the industrial large-scale production, and lays the foundation for the development of Chinese yam foods in future.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method of soluble yam powder. Background technique [0002] Yam belongs to the tuber of Dioscorea yam, a perennial herbaceous plant of Dioscoreaceae, which is currently planted all over my country, because it is rich in starch, protein, polysaccharide, and various amino acid components. Yijing, Yifei and cough-relieving effects, modern pharmacological research has also found that yam has various biological activities such as hypoglycemic, anti-oxidation, anti-mutation, immune regulation, etc. [0003] Because yam starch is difficult to dissolve in water, and yam is a plant rich in starch, many problems will be encountered when developing health care products with yam as the main raw material. Stratification occurs, which affects the appearance and taste of the product; when making instant powder, because the starch is insoluble in water, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/2165A23L1/09A23L19/15
Inventor 高文远王海洋李霞
Owner TIANJIN UNIV