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Method of extracting starch from waste tobacco leaves

A technology for discarding tobacco leaves and starch, applied in the field of starch extraction, can solve the problems of low content and low industrial feasibility, and achieve the effects of increasing content, improving utilization value and increasing extraction rate

Active Publication Date: 2015-12-09
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, there are many introductions to extract nicotine and solanesol from waste tobacco leaves, but their content is less than starch, and its industrialization feasibility is not strong. The content of starch in mature tobacco leaves is about 25%. Therefore, an extraction and separation method is urgently needed. The process of starch is used in waste tobacco leaves. At present, there is no production process for extracting starch from tobacco leaves. This patent will introduce the method of extracting fine starch from tobacco leaves in detail.

Method used

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  • Method of extracting starch from waste tobacco leaves

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The method for extracting the starch in the waste tobacco leaf of the present embodiment, the steps are as follows:

[0025] (1) Prepare finished samples: put the tobacco leaves in an oven, adjust the temperature of the oven to 105°C and continue drying for 15 minutes, then lower the temperature of the oven to 60°C, and dry the tobacco leaves;

[0026] (2) Preparation of tobacco powder: Add the dried and finished sample into a pulverizer to pulverize for 1 minute, pass through a 40-mesh sieve, and weigh 100g of processed tobacco powder;

[0027] (3) Soaking: put the smoke powder into NaOH solution with pH 9 and soak for 4 hours, the mass ratio of smoke powder to NaOH is 1:5;

[0028] (4) Filtration: pass the soaked tobacco powder slurry through an 80-mesh sieve, and the under-sieve is the required coarse starch slurry;

[0029] (5) Centrifugation: Centrifuge the coarse starch slurry (3500~4000r / min, 15min), filter the supernatant, and wash the precipitate with water re...

Embodiment 2

[0034] The method for extracting the starch in the waste tobacco leaf of the present embodiment, the steps are as follows:

[0035] (1) Prepare finished samples: put the tobacco leaves evenly on the comb-type tobacco clips and put them in an oven, and bake them at 100°C for 20 minutes, in order to inactivate the enzymes in the tobacco leaves in a short time, and then lower the temperature Tobacco leaves are dried at 55°C to obtain finished samples;

[0036] (2) Preparation of smoke powder: put the finished sample into the pulverizer and pulverize it for 3 minutes, pass through a 40-mesh sieve to obtain smoke powder;

[0037] (3) Soaking: Put the tobacco powder in NaOH solution with a pH of 8 and soak for 6 hours to obtain the tobacco powder slurry. The mass ratio of tobacco powder to NaOH solution is 1:2. The main function is to inhibit the enzymatic hydrolysis of starch in the tobacco powder , enhance the solubility of protein, and improve the whiteness of its starch at the ...

Embodiment 3

[0044] The method for extracting the starch in the waste tobacco leaf of the present embodiment, the steps are as follows:

[0045] (1) Prepare finished samples: put the tobacco leaves evenly on the comb-type tobacco clips and put them in an oven, and bake them at 110°C for 10 minutes, in order to inactivate the enzymes in the tobacco leaves in a short time, and then lower the temperature Tobacco leaves are dried at 65°C to obtain finished samples;

[0046] (2) Preparation of tobacco powder: put the finished sample into a pulverizer and pulverize it for 1 minute, pass through a 40-mesh sieve to obtain smoke powder;

[0047] (3) Soaking: Put the smoke powder into NaOH solution with a pH of 12 and soak for 2 hours to obtain a smoke powder slurry. The mass ratio of smoke powder to NaOH solution is 1:9. The main function is to inhibit the enzymatic hydrolysis of starch in the smoke powder , enhance the solubility of protein, and improve the whiteness of its starch at the same tim...

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Abstract

The invention belongs to the field of tobacco leaf extraction and processing, and specifically relates to a method of extracting starch from waste tobacco leaves. The method comprises the following steps: (1) preparing a sample with inactivated enzymes; (2) preparing tobacco powder; (3) soaking; (4) filtering; (5) performing centrifugation; (6) removing impurities; (7) filtering for the second time; (8) carrying out centrifugation for the second time and drying by baking. The provided method has the advantages of high starch extraction rate and high starch purity, is capable of prominently improving the utilization value of tobacco leaf, and can be used by the food processing enterprises. The technology of extracting starch from tobacco leaves is refined, becomes more operable, is capable of prominently increasing the output and extraction rate of starch from tobacco leaves, increases the utilization value of waste tobacco leaves, can be easily mastered and operated by workers in starch processing enterprises, increases the incomes of tobacco farmers, and has a good popularization prospect.

Description

technical field [0001] The invention relates to a method for extracting starch from tobacco leaves, belonging to the field of extraction and processing of tobacco leaf products. Background technique [0002] When the tobacco leaves are mature and harvested, tobacco farmers generally remove 2-3 foot leaves to improve the quality of the middle and upper leaves. There are hundreds of thousands of tons of tobacco leaves. If the starch in these waste tobacco leaves can be extracted and the potential value of waste tobacco leaves can be brought into play, huge economic benefits will be generated. At the same time, recycling waste tobacco leaves can effectively increase the income of tobacco farmers and make efficient use of waste tobacco leaves ,Turning waste into treasure. Generally, there are many introductions to extract nicotine and solanesol from waste tobacco leaves, but their content is less than starch, and its industrialization feasibility is not strong. The content of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/00C08B30/04
Inventor 赵铭钦来苗姬小明陶陶王鹏泽
Owner HENAN AGRICULTURAL UNIVERSITY
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