A method for extracting pectin from waste sisal residue

A technology of sisal residue and pectin, which is applied in the field of plant component extraction, can solve the problems affecting later application and low molecular weight of pectin, and achieve the effects of low consumption, light color and low degree of esterification

Active Publication Date: 2018-07-20
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The patent document "extraction method of sisal pectin" (publication number: CN105254778A) discloses a method for extracting pectin from sisal residue by fermentation; the patent document "extraction method of sisal pectin" (published No.: CN103834710A) discloses a method for extracting pectin from sisal residue by enzymatic method, specifically adopts cellulase and pectinase enzymatic hydrolysis extraction, compared with traditional acid method for extracting pectin by enzymatic method, the conditions Mild and pollution-free, using this patented method, the pectin extraction rate is about 10%, and due to the degradation of pectinase, the molecular weight of the extracted pectin is low, which affects the later application

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  • A method for extracting pectin from waste sisal residue
  • A method for extracting pectin from waste sisal residue
  • A method for extracting pectin from waste sisal residue

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The sisal slag after fiber extraction was washed with clean water for several times, to remove impurities, and air-dried at 60°C for 10 hours. The dried sisal slag was mechanically pulverized with a Bailey micro-powder machine for 30 minutes, and the sisal slag fine powder was passed through the pores in turn. 2.0mm and 0.5mm sieves, sealed in a sample bag, and stored in a dry place at room temperature; mix the sisal residues in hot water at 85°C, stir well, let stand for 20min, rinse twice with clean water, and drum at 60°C Air-dry for 6 hours; take 100 g of dried sisal residue powder, put it in a Soxhlet extractor, use toluene-ethanol (2:1, V / V) as solvent, extract at 50°C for 4 hours to degrease, and then take out the sisal residue , air-dried at 60°C for 16 h; add 500 mL of 0.1 mol / L HAc-NaAc buffer solution (pH4. 0), after stirring evenly, add 40 μl of cellulose complex enzyme Celluclast 1.5L, shake and extract in a shaker water bath at 45°C for 18h, then heat the ...

Embodiment 2

[0037]The sisal slag after fiber extraction was washed with clean water for several times, to remove impurities, and air-dried at 60°C for 10 hours. The dried sisal slag was mechanically pulverized with a Bailey micro-powder machine for 30 minutes, and the sisal slag fine powder was passed through the pores in turn. 2.0mm and 0.5mm sieves, sealed in a sample bag, and stored in a dry place at room temperature; mix the sisal residues in hot water at 85°C, stir well, let stand for 20min, rinse twice with clean water, and drum at 60°C Air-dry for 6 hours; take 100 g of dried sisal residue powder, put it in a Soxhlet extractor, use toluene-ethanol (2:1, V / V) as solvent, extract at 50°C for 4 hours to degrease, and then take out the sisal residue , air-drying at 60°C for 16 hours; add 800mL of 0.1mol / L HAc-NaAc buffer solution (pH4. 0), after stirring evenly, add 85 μl of cellulose complex enzyme Celluclast 1.5L, shake and extract in a shaker water bath at 45°C for 18h, then heat th...

Embodiment 3

[0039] The sisal slag after fiber extraction was washed with clean water for several times, to remove impurities, and air-dried at 60°C for 10 hours. The dried sisal slag was mechanically pulverized with a Bailey micro-powder machine for 30 minutes, and the sisal slag fine powder was passed through the pores in turn. 2.0mm and 0.5mm sieves, sealed in a sample bag, and stored in a dry place at room temperature; mix the sisal residues in hot water at 85°C, stir well, let stand for 20min, rinse twice with clean water, and drum at 60°C Air-dry for 6 hours; take 100 g of dried sisal residue powder, put it in a Soxhlet extractor, use toluene-ethanol (2:1, V / V) as solvent, extract at 50°C for 4 hours to degrease, and then take out the sisal residue , air-dried at 60°C for 16 h; add 500 mL of 0.1 mol / L HAc-NaAc buffer solution (pH4. 0), after stirring evenly, add 40 μl of cellulose complex enzyme Celluclast 1.5L, shake and extract in a shaker water bath at 45°C for 18h, then heat the ...

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Abstract

The invention belongs to the technical field of plant component extraction, and discloses a method for extracting pectin from waste sisal residues. The method includes the steps of smashing sisal residues, killing enzyme with hot water, conducting extracting through a cellulose compound enzyme solution after degreasing to obtain a sisal residue pectin solution extracted through an enzyme method and solid residues, adding solid residues to an ammonium oxalate solution, conducting ultrasonic extracting to obtain a sisal residue pectin solution extracted through an ultrasonic method, combining and concentrating the sisal residue pectin solution, adding absolute ethyl alcohol for sedimentation, and making sediment sequentially subjected to decoloring through an acid alcohol solution and washing through an ethyl alcohol water solution and vacuum drying to obtain sisal residue pectin. The enzyme method and the ultrasonic extracting method are put forward first so that sisal residue pectin can be extracted; compared with an acid extracting method, an oxalic acid and ammonium oxalate extracting method, a fermentation method and the like in the prior art, the pectin extracting rate is increased to be 30-40% from 10-15%.

Description

technical field [0001] The invention belongs to the technical field of plant component extraction, and in particular relates to a method for extracting pectin from waste sisal residue. Background technique [0002] More and more countries, especially developed countries, have listed the transformation and utilization of agricultural and forestry waste and other renewable resources into an important strategy for sustainable social and economic development. The effective use of agricultural and forestry waste biomass has become the focus of sustainable development of human beings today. one. my country is one of the big sisal producing countries. The harvested area of ​​sisal in my country ranks ninth in the world, the output of sisal fiber ranks third in the world, and the average yield per unit ranks first. my country's sisal planting is mainly distributed in subtropical regions such as Guangdong, Guangxi, Hainan, and Fujian. Due to the impact of rising labor costs, the tot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/06
CPCC08B37/0003C08B37/0048
Inventor 王兆梅黄舒晴胡蝶
Owner SOUTH CHINA UNIV OF TECH
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