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Extraction method of abelmoschus esculentus pectin

An extraction method and technology for okra fruit, which are applied in the field of okra pectin extraction, can solve the problems of high requirement of microbial method conditions, hydrolysis and degradation, inconvenient control and the like, and achieve easy control of process operation, short working hours, and extraction rate. high effect

Inactive Publication Date: 2015-03-25
TIANJIN INT JOINT ACADEMY OF BIOTECH & MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the extraction methods of pectin generally include acid hydrolysis, ion exchange, and microbial methods. The traditional acid hydrolysis method is prone to partial hydrolysis and degradation of pectin molecules during the extraction process; , and the microbial method requires high conditions and is not easy to control, so it is of great significance to find an efficient and convenient extraction method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) select fresh okra fruit and wash it with water;

[0022] (2) the washed okra fruit is broken with a food crusher;

[0023] (3) According to the mass ratio of 1:20, add distilled water to the crushed okra fruit, adjust the pH=3 with sulfuric acid, and extract with microwave at 700w for 5min;

[0024] (4) Cool the filtrate after filtering the extract to room temperature, add activated carbon and heat in a water bath at 60°C for 60 minutes to decolorize; the ratio of filtrate to activated carbon is 100mL: 3g;

[0025] (5) Filter the decolorized extract, concentrate the filtrate under reduced pressure to a concentrated solution with a relative density of 1.10 at 65° C., add absolute ethanol of 1 times the volume of the concentrated solution, stir and let stand for 13 hours to precipitate pectin;

[0026] (6) Use a centrifuge to centrifuge at 3000r / min for 10 minutes, remove the supernatant to obtain a viscous paste; freeze-dry to obtain dry okra pectin powder. The yie...

Embodiment 2

[0028] (1) select fresh okra fruit and wash it with water;

[0029] (2) the washed okra fruit is broken with a food crusher;

[0030] (3) According to the mass ratio of 1:10, add distilled water to the crushed okra fruit, adjust the pH=2 with sulfuric acid, and extract with 500W microwave for 10 minutes;

[0031] (4) Cool the filtrate after filtering the extract to room temperature, add activated carbon and heat in a water bath at 50°C for 120 minutes to decolorize; the ratio of filtrate to activated carbon is 100mL: 1g;

[0032] (5) Filtrate the decolorized extract, concentrate the filtrate under reduced pressure to a concentrated solution with a relative density of 1.08 at 65° C., add absolute ethanol of 1 times the volume of the concentrated solution, stir and let stand for 15 hours to precipitate pectin;

[0033] (6) Use a centrifuge to centrifuge at 3000r / min for 5min, remove the supernatant to obtain a viscous paste; freeze-dry to obtain okra pectin dry powder. The yie...

Embodiment 3

[0035] (1) select fresh okra fruit and wash it with water;

[0036] (2) the washed okra fruit is broken with a food crusher;

[0037] (3) According to the mass ratio of 1:30, add distilled water to the crushed okra fruit, adjust the pH=4 with sulfuric acid, and extract in 800W microwave for 2 minutes;

[0038] (4) Cool the filtrate after filtering the extract to room temperature, add activated carbon and heat in a water bath at 70°C for 30 minutes to decolorize; the ratio of filtrate to activated carbon is 100mL: 5g;

[0039] (5) Filtrate the decolorized extract, concentrate the filtrate under reduced pressure to a concentrated solution with a relative density of 1.12 at 65° C., add absolute ethanol with 2 times the volume of the concentrated solution, stir and let stand for 10 hours to precipitate pectin;

[0040] (6) Use a centrifuge to centrifuge at 2000r / min for 15 minutes, remove the supernatant to obtain a viscous paste; freeze-dry to obtain dry okra pectin powder. The...

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Abstract

The invention discloses an extraction method of abelmoschus esculentus pectin. The extraction method of the abelmoschus esculentus pectin comprises the following steps that (1) fresh abelmoschus esculentus fruits are selected and thoroughly cleaned with water; (2) the thoroughly washed abelmoschus esculentus fruits are crushed with a food crusher; (3) distilled water is added to the crushed abelmoschus esculentus fruits, the Ph value is adjusted, and microwave extraction is carried out; (4) extracted liquid is filtered and cooled down to the room temperature, activated carbon is added to the cooled liquid, and then the liquid is heated in a water bath mode for decoloration; (5) filtering is carried out, decompression concentration is carried out on the filtered liquid, then absolute ethyl alcohol is added, and the liquid is stirred and made to stand, so that the pectin is deposited; (6) the pectin is centrifugalized by a centrifugal machine, supernatant is removed to obtain thick paste, and the thick paste is cooled and dried to obtain abelmoschus esculentus pectin dry powder. Through the extraction method of the abelmoschus esculentus pectin, the man hour is short, energy consumption is low, technological operations are easy to control, the extraction efficiency is high, and the structural stability of the abelmoschus esculentus pectin is effectively retained. Due to the fact that the actived carbon is added for decoloration, the abelmoschus esculentus pectin is pure white, no impurity is left after the abelmoschus esculentus pectin powder is dissolved and clarified, and the pectin extraction rate accounts for more than 18% of fresh fruits.

Description

technical field [0001] The invention relates to the field of food and medicine, in particular to a method for extracting okra pectin. Background technique [0002] Gastrointestinal dysfunction, also known as gastrointestinal neurosis, is a general term for a group of gastrointestinal syndromes, most of which have a background of mental factors, mainly gastrointestinal motility disorders, and have no organic lesions in terms of pathological anatomy Therefore, it does not include gastrointestinal dysfunction caused by other systemic diseases. The clinical manifestations are mainly abnormalities in the gastrointestinal tract related to eating and excretion, and are often accompanied by insomnia, anxiety, inattention, forgetfulness, nervousness, headache and other functional symptoms. Gastrointestinal dysfunction is quite common. It is a three-point drug, and Western medicine often cannot achieve the desired therapeutic effect. Therefore, it is an ideal choice for patients to r...

Claims

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Application Information

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IPC IPC(8): C08B37/06
Inventor 张博冯金磊李金楠朱倩刘祥贾斌
Owner TIANJIN INT JOINT ACADEMY OF BIOTECH & MEDICINE
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