Extraction technology of premna microphylla turcz dry leaf pectin

A technology for extracting pectin and fresh leaves of bean curd, which is applied in the field of pectin extraction from dried bean curd leaves, can solve the problems of complex extraction process, low pectin extraction rate, and easy damage of raw materials, so as to simplify the extraction process and reduce transportation Cost, non-destructive effect

Inactive Publication Date: 2018-09-21
WUSHAN TIANYU QIYE AGRI DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) The extraction rate of pectin is low and washing is inconvenient;
[0006] 2) During the extraction process, the raw materials are easily damag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A process for extracting pectin from dried leaves of bean curd, comprising the following steps:

[0033] S1: removing impurities from the fresh leaves of tofu;

[0034] S2: cleaning the fresh leaves of bean curd after removing impurities;

[0035] S3: Dry the fresh leaves of tofu after cleaning, the drying temperature is 60-95°, and the drying time is 3-8 hours; in this embodiment, the drying temperature is 60°, and the drying time is 3 hours ;

[0036] S4: Crush the fresh leaves of Chai tofu to a diameter of 3 mm-15 mm; in this embodiment, the fresh leaves of Chai tofu are crushed to a diameter of 3 mm.

[0037] S5: Add 30-70 times the water of the fresh leaves of Doufuchai, add 0.0023-0.003% nitric acid to adjust the pH to 1.3-1.8; in this embodiment, add 30 times the water of the fresh leaves of Doufuchai, add 0.0023% nitric acid to adjust the pH to 1.3 ; One catty of dry leaves needs 3-5 catties of fresh leaves; fresh leaves need 10-20 times the amount of water. ...

Embodiment 2

[0045] A process for extracting pectin from dried leaves of bean curd, comprising the following steps:

[0046] S1: removing impurities from the fresh leaves of tofu;

[0047] S2: cleaning the fresh leaves of bean curd after removing impurities;

[0048] S3: Dry the fresh leaves of tofu after cleaning, the drying temperature is 60-95°, and the drying time is 3-8 hours; in this embodiment, the drying temperature is 80°, and the drying time is 5 hours ;

[0049] S4: crush the fresh leaves of Doufuchai to a diameter of 3mm-15mm; in this embodiment, the fresh leaves of Doufuchai are crushed to a diameter of 9mm.

[0050] S5: Add 30-70 times the water of the fresh leaves of Doufuchai, add 0.0023-0.003% nitric acid to adjust the pH to 1.3-1.8; in this embodiment, add 50 times the water of the fresh leaves of Doufuchai, add 0.0027% nitric acid to adjust the pH to 1.5 ; One catty of dry leaves needs 3-5 catties of fresh leaves; fresh leaves need 10-20 times the amount of water.

...

Embodiment 3

[0057] A process for extracting pectin from dried leaves of bean curd, comprising the following steps:

[0058] S1: removing impurities from the fresh leaves of tofu;

[0059] S2: cleaning the fresh leaves of bean curd after removing impurities;

[0060] S3: Dry the fresh leaves of tofu after cleaning, the drying temperature is 60-95°, and the drying time is 3-8 hours; in this embodiment, the drying temperature is 95°, and the drying time is 8 hours ;

[0061] S4: Grinding the fresh leaves of Doufuchai to a diameter of 3mm-15mm; in this embodiment, crushing the fresh leaves of Doufuchai to a diameter of 15mm.

[0062] S5: Add 30-70 times the water of the fresh leaves of Tofu Chai, add 0.0023-0.003% nitric acid to adjust the pH to 1.3-1.8; in this embodiment, add 70 times the water of the fresh leaves of Tofu Chai, add 0.003% nitric acid to adjust the pH to 1.8 ; One catty of dry leaves needs 3-5 catties of fresh leaves; fresh leaves need 10-20 times the amount of water.

...

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PUM

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Abstract

The invention discloses an extraction technology of premna microphylla turcz dry leaf pectin. The extraction technology comprises the following steps: performing impurity removal on premna microphyllaturcz fresh leaves; washing the premna microphylla turcz fresh leaves after impurity removal; drying the washed premna microphylla turcz fresh leaves; smashing the premna microphylla turcz fresh leaves; adding water which is 30 to 70 times of the premna microphylla turcz fresh leaves; heating water until the temperature is 60 to 90 DEG C; filtering, removing residue, and carrying out primary sedimentation to obtain pectin; adding active carbon, and carrying out heat preservation decoloration; carrying out heating concentration, and then adding alcohol to carry out sedimentation for filtering;carrying out drying, baking and smashing so as to obtain the pectin. In the embodiment, drying is carried out by using heated air circulation, baking is carried out through a baking oven, and smashing is carried out through a stainless steel smashing machine. According to the extraction technology, first, the extraction rate of the pectin is improved effectively, and the pectin is convenient to wash; second, in the extraction process, the raw materials are unlikely to damage and easy to store; third, the transportation cost of the raw materials is reduced; extraction technology is simplified.

Description

technical field [0001] The invention relates to an extraction process, in particular to a process for extracting pectin from dried leaves of bean curd. Background technique [0002] Tofuchai; Tofuchai is a perennial deciduous erect shrub or tree plant of the Verbenaceae family, also known as rotten maid. Alias: Tofu Chai, Earth Changshan, Stinky Lady, Smelly Changshan, Jelly Leaf, Tie Huopan, June Jelly, Stinky Yellow Vitex, Guanyin Chai, Louse Hemp Chai, Stinky Tea, Small Green Tree, Glutinous Rice Paste, Pinch Dan Paste, Mo Ziren, tofu wood. [0003] Tofu wood is mostly 1-3 meters high, and individual varieties can grow to more than 10 meters. Branches cylindrical, brown, young branches, peduncles and inflorescence branches densely covered with brown slightly curly tomentose, posterior branches become glabrous, striate, lenticels densely connected into lines. Leaves are papery, smelly when rubbed, alternately opposite, ovate, ovate-lanceolate or elliptic, 4-11 cm long, ...

Claims

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Application Information

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IPC IPC(8): C08B37/06
CPCC08B37/0003C08B37/0045
Inventor 杨小明
Owner WUSHAN TIANYU QIYE AGRI DEV CO LTD
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