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Potato starch extraction technology

A potato starch and extraction process technology, applied in the field of starch extraction process, can solve the problem of low purity, achieve the effects of simple process, environmental protection and reduction of process wastewater discharge

Inactive Publication Date: 2013-09-25
SUZHOU TIANLING CHINESE TRADITIONAL MEDICINE SLICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the purity is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Effect of solid-liquid ratio on extraction rate

[0020] Potatoes are washed and peeled, and the particle size of the crushed products is 40-60 mesh, and they are sealed and isolated from the air and stored for later use. Put the processed potatoes in the reaction tank, add a certain amount of water, the ratio of solid to liquid is 1:5, 1:10, 1:15, 1:20, add a certain amount of disodium hydrogen phosphate-citric acid buffer Adjust the pH to 4.1-4.4, add 0.3% cellulase by mass, extract at 30°C-35°C for 60 minutes, centrifuge and filter the extract, take the precipitate as wet starch, and dry it to obtain the product.

[0021] The influence of table 1 solid-liquid ratio on extraction rate

[0022] solid to liquid ratio 1:5 1:10 1:15 1:20 Extraction rate (%) 80.5 87.4 96.7 90.2

Embodiment 2

[0024] Effect of enzymatic extraction time on extraction rate

[0025] Potatoes are washed and peeled, and the particle size of the crushed products is 40-60 mesh, and they are sealed and isolated from the air and stored for later use. Put the processed potatoes in the reaction tank, add a certain amount of water, the ratio of solid to liquid is 1:15, add a certain amount of disodium hydrogen phosphate-citric acid buffer solution to adjust the pH to 4.1-4.4, and add a mass ratio of 0.3% The cellulase was extracted at 30°C to 35°C for 30, 45, 60, 90, and 120 minutes, the extract was centrifuged and filtered, the precipitate was taken as wet starch, and dried to obtain the product.

[0026]

[0027] The influence of the time of table 2 enzymolysis extraction on extraction rate

[0028] Enzyme hydrolysis time (min) 30 45 60 90 120 Extraction rate (%) 85.4 95.6 95.5 93.7 89.5

Embodiment 3

[0030] Potatoes are washed and peeled, and the particle size of the crushed products is 40-60 mesh, and they are sealed and isolated from the air and stored for later use. Put the processed potatoes in the reaction tank, add a certain amount of water, the ratio of solid to liquid is 1:15, add a certain amount of disodium hydrogen phosphate-citric acid buffer solution to adjust the pH to 4.1-4.4, and add a mass ratio of 0.3% The cellulase was extracted at a temperature of 30°C to 35°C for 45 minutes, the extract was centrifuged and filtered, the precipitate was taken as wet starch, and dried to obtain the product. The extraction rate is 96.9%, and the water content of starch is about 3%.

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Abstract

The invention discloses a potato starch extraction technology. The preparation process comprises the following steps: cleaning potato and removing the peel, crushing potato until the granularity of the crushed object is 40-60 meshes, sealing to exclude the air to store for later use; placing the processed potato into a reaction pot, adding a certain amount of water until the solid-to-liquid ratio is 1:5-20, adding a certain amount of a disodium hydrogen phosphate-citric acid buffer to adjust pH to 4.1-4.4, adding 0.2-0.3 wt% of cellulose, extracting at 30-35 DEG C for 30-120min, carrying out centrifugal filtration on an extract, taking a precipitate as a green starch, and drying to obtain a product. By the adoption of the potato starch extraction technology, process wastewater discharge is reduced, an important commercial technique is provided for environmentally-friendly high-value utilization of the potato resource, potato starch industry can develop rapidly and properly, higher agricultural economic value is created, and good social benefit and economic benefit are brought for the society.

Description

technical field [0001] The invention relates to a starch extraction process, in particular to an enzyme extraction process for potato starch. Background technique [0002] Potato (Solanum tuberosum) is also known as potato, yam, potato, yam egg, etc. Potato is the fourth major crop after wheat, rice and corn in the world, and the third largest starch raw material besides wheat and corn. It is a food resource with more comprehensive nutrients. Since the 1960s, the area of ​​potato production in developing countries has grown faster than that of other food crops, bringing great hope to maintaining global food security. China's potato planting area and total output both rank first in the world. The planting area exceeds 100 million mu, and the per unit yield exceeds 1200kg / mu, accounting for 20% of the world's total output. Compared with other crops, potato is a high-yield economic crop with broad development prospects, which is used as a combination of grain, vegetables, fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/04
Inventor 李建华
Owner SUZHOU TIANLING CHINESE TRADITIONAL MEDICINE SLICE
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