CN102977226A - Method for preparing pectin from shaddock peels - Google Patents
Method for preparing pectin from shaddock peels Download PDFInfo
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- CN102977226A CN102977226A CN2012105110742A CN201210511074A CN102977226A CN 102977226 A CN102977226 A CN 102977226A CN 2012105110742 A CN2012105110742 A CN 2012105110742A CN 201210511074 A CN201210511074 A CN 201210511074A CN 102977226 A CN102977226 A CN 102977226A
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Abstract
The invention relates to a method for preparing pectin from shaddock peels. The method comprises the following steps of: 1) chopping fresh shaddock peels, performing heat treatment on the chopped peels in boiling water for 5 to 10 minutes, soaking the chopped peels in the water at a temperature of 50 to 70 DEG C for 20 to 30 minutes, and rinsing with water for a plurality of times; 2) taking the shaddock peels treated in the step 1), adding water which accounts for 4 to 5 times of the weight of the shaddock peels, adding inorganic acid until the pH is between 0.5 and 2.0, heating to 80 to 90 DEG C, keeping the temperature constant for 20 to 40 minutes under the condition of incessant stirring, filtering while the mixture is still hot, adding 0.5 to 1.5 percent of active carbon to the filtrate, keeping a constant temperature of 80 to 90 DEG C for 20 to 40 minutes under the condition of stirring, filtering, and decompressing and thickening the filtrate until the volume is reduced by 40 to 60 percent to obtain a concentrated solution; and 3) taking the concentrated solution, adding 95-percent ethanol which accounts for 0.5 to 1.5 times of the weight of the concentrated solution, standing for 10 to 30 minutes, leaching, settling, washing with 75-percent ethanol for a plurality of times, separating centrifugally and drying precipitates at a temperature of 50 to 60 DEG C to obtain a finished product. According to the method, the shaddock peels are used as the raw material, the preparation method is simple, the yield is high and the quality of the prepared pectin is high so that the aim of changing waste into valuable is fulfilled.
Description
Technical field
The present invention relates to a kind of extracting method of pectin, specifically a kind of method with shaddock leather pectin.
Background technology
Pectin is a kind of natural macromolecule amylose polymkeric substance, is generally rice white or fawn-coloured powder, its odorless, and little sweet and tart flavour slightly of distinguishing the flavor of is insoluble to the organic solvents such as ethanol, methyl alcohol, is dissolved in hot water, is slightly soluble in cold water.Pectin has good gelling and stable emulsifying effect, has been widely used in the fields such as food, medicine, daily use chemicals.In recent years, pectin has diarrhea, anticancer, effect such as treatment diabetes etc. as soluble dietary fibre, and its range of application constantly enlarges.Along with expanding economy. it is increasing to the demand of pectin (to comprise China) in the world.Because the pectin production of China also is in the primary stage, a large amount of pectin also will lean on from external import.Therefore the pectin resource of Devoting Major Efforts To Developing China's abundant is produced high-quality pectin, satisfies the domestic and international market demand and has seemed very urgent.China's shaddock volume of production and marketing is very high, and the pomelo peel resource is very abundant.Pomelo peel is rich in pectin, is the desirable feedstock of producing pectin.The south China area is annual to have a large amount of shaddock fresh fruits to enter the market, and at present, a large amount of pomelo peels is treated as waste material and abandons, and not only causes waste, also environment has been produced certain pollution.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method with shaddock leather pectin, and the method is take pomelo peel as raw material, and the preparation method is simple, and yield is high, the pectin quality better that makes, thereby the purpose that realization is turned waste into wealth.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of method with shaddock leather pectin may further comprise the steps:
1) get fresh pomelo peel, chopping, behind thermal treatment 5～10min, then the water soaking 20～30min with 50～70 ℃ uses the water rinse several times in the boiling water, removes as far as possible bitter taste, pigment and the non-colloidalmaterial of solubility etc.;
2) pomelo peel of step 1) after processing of learning from else's experience, the water that adds 4～5 times of weight, add mineral acid to pH be 0.5～2.0, be heated to 80～90 ℃, constant temperature 20～40min under the condition that constantly stirs, filtered while hot, the gac of adding filtrate weight 0.5%～1.5% in the filtrate, 80～90 ℃ of constant temperature also stir maintenance 20～40min, filter, the filtrate that obtains is substantially colourless, gets filtrate decompression and is concentrated into volume minimizing 40%～60%, gets concentrated solution;
3) get step 2) concentrated solution that makes, add 95% ethanol of 0.5～1.5 times of weight, left standstill 10～30 minutes, suction filtration precipitates with 75% washing with alcohol several times, centrifugation, the throw out that centrifugation obtains is dried under 50～60 ℃ of conditions, namely make finished product.
Preferably, in the step 1), with pomelo peel shred to particle diameter be 2～5mm.
Preferably, step 2) in, described mineral acid is hydrochloric acid.
Preferably, step 2) in, described pH is 2.0.
Preferably, step 2) in, the temperature of described concentrating under reduced pressure is 70～75 ℃.
Preferably, in the step 3), described time of repose is 20min.
A kind of method with shaddock leather pectin of the present invention, take pomelo peel as raw material, raw material sources are extensive, cheap, the preparation method is simple and easy to control, and the pectin that makes is faint yellow, and purity is high, yield can reach about 10%, when realization is turned waste into wealth, has realized again producing the purpose of high-quality pectin.
Embodiment
The below is described further with embodiment, but the present invention is not limited to these embodiment.
Embodiment 1
With the method for shaddock leather pectin, its process is as follows:
1) get fresh pomelo peel, shred to particle diameter be 2～5mm, behind the thermal treatment 10min, with 60 ℃ water soaking 25min, then use water rinse 3 times in the boiling water;
2) pomelo peel of step 1) after processing of learning from else's experience adds the water of 4.5 times of weight, add hydrochloric acid to pH be 2.0, be heated to 85 ℃, constant temperature 30min under the condition that constantly stirs, filtered while hot, the gac of adding filtrate weight 1.0% in the filtrate, 85 ℃ of constant temperature also stir maintenance 30min, filter, get filtrate, under 72 ℃ of conditions, be evaporated to volume and reduce 50%, get concentrated solution;
3) concentrated solution that the step 2 of learning from else's experience) makes adds 95% ethanol of 1.0 times of weight, left standstill 20 minutes, and suction filtration, precipitation is with 75% washing with alcohol 3 times, and centrifugation is dried the throw out that centrifugation obtains under 55 ℃ of conditions, namely make finished product.
The pectin yield of present embodiment is 10.1%, and the pectin finished product that makes is flaxen powder.
Embodiment 2
With the method for shaddock leather pectin, its process is as follows:
1) get fresh pomelo peel, shred to particle diameter be 2～5mm, behind the thermal treatment 5min, with 60 ℃ water soaking 30min, then use water rinse 3 times in the boiling water;
2) pomelo peel of step 1) after processing of learning from else's experience adds the water of 4 times of weight, add hydrochloric acid to pH be 1.0, be heated to 90 ℃, constant temperature 20min under the condition that constantly stirs, filtered while hot, the gac of adding filtrate weight 1.0% in the filtrate, 90 ℃ of constant temperature also stir maintenance 20min, filter, get filtrate, under 73 ℃ of conditions, be evaporated to volume and reduce 60%, get concentrated solution;
3) concentrated solution that the step 2 of learning from else's experience) makes adds 95% ethanol of 0.5 times of weight, left standstill 20 minutes, and suction filtration, precipitation is with 75% washing with alcohol 3 times, and centrifugation is dried the throw out that centrifugation obtains under 60 ℃ of conditions, namely make finished product.
The pectin yield of present embodiment is 8.5%, and the pectin finished product that makes is flaxen powder.
Embodiment 3
With the method for shaddock leather pectin, its process is as follows:
1) get fresh pomelo peel, shred to particle diameter be 2～5mm, behind the thermal treatment 8min, with 70 ℃ water soaking 20min, then use water rinse 2 times in the boiling water;
2) pomelo peel of step 1) after processing of learning from else's experience adds the water of 4.5 times of weight, add hydrochloric acid to pH be 2.0, be heated to 80 ℃, constant temperature 30min under the condition that constantly stirs, filtered while hot, the gac of adding filtrate weight 1.5% in the filtrate, 80 ℃ of constant temperature also stir maintenance 30min, filter, get filtrate, under 75 ℃ of conditions, be evaporated to volume and reduce 40%, get concentrated solution;
3) concentrated solution that the step 2 of learning from else's experience) makes adds 95% ethanol of 1.0 times of weight, left standstill 30 minutes, and suction filtration, precipitation is with 75% washing with alcohol 4 times, and centrifugation is dried the throw out that centrifugation obtains under 50 ℃ of conditions, namely make finished product.
The pectin yield of present embodiment is 9.4%, and the pectin finished product that makes is flaxen powder.
Embodiment 4
With the method for shaddock leather pectin, its process is as follows:
1) get fresh pomelo peel, shred to particle diameter be 2～5mm, behind the thermal treatment 10min, with 50 ℃ water soaking 25min, then use water rinse 2 times in the boiling water;
2) pomelo peel of step 1) after processing of learning from else's experience adds the water of 5 times of weight, add hydrochloric acid to pH be 0.5, be heated to 85 ℃, constant temperature 40min under the condition that constantly stirs, filtered while hot, the gac of adding filtrate weight 0.5% in the filtrate, 85 ℃ of constant temperature also stir maintenance 40min, filter, get filtrate, under 70 ℃ of conditions, be evaporated to volume and reduce 50%, get concentrated solution;
3) concentrated solution that the step 2 of learning from else's experience) makes adds 95% ethanol of 1.5 times of weight, left standstill 10 minutes, and suction filtration, precipitation is with 75% washing with alcohol 4 times, and centrifugation is dried the throw out that centrifugation obtains under 55 ℃ of conditions, namely make finished product.
The pectin yield of present embodiment is 7.9%, and the pectin finished product that makes is flaxen powder.
Claims (6)
1. the method with shaddock leather pectin is characterized in that, may further comprise the steps:
1) get fresh pomelo peel, chopping, behind thermal treatment 5～10min, then the water soaking 20～30min with 50～70 ℃ uses the water rinse several times in the boiling water;
2) pomelo peel of step 1) after processing of learning from else's experience, the water that adds 4～5 times of weight, add mineral acid to pH be 0.5～2.0, be heated to 80～90 ℃, constant temperature 20～40min under the condition that constantly stirs, filtered while hot, the gac that adds filtrate weight 0.5%～1.5% in the filtrate, 80～90 ℃ of constant temperature also stir maintenance 20～40min, filter, get filtrate decompression and be concentrated into volume minimizing 40%～60%, get concentrated solution;
3) get step 2) concentrated solution that makes, add 95% ethanol of 0.5～1.5 times of weight, left standstill 10～30 minutes, suction filtration precipitates with 75% washing with alcohol several times, centrifugation, the throw out that centrifugation obtains is dried under 50～60 ℃ of conditions, namely make finished product.
2. the method with shaddock leather pectin according to claim 1 is characterized in that: in the step 1), with pomelo peel shred to particle diameter be 2～5mm.
3. the method with shaddock leather pectin according to claim 1 is characterized in that: step 2) in, described mineral acid is hydrochloric acid.
4. the method with shaddock leather pectin according to claim 1 is characterized in that: step 2) in, described pH is 2.0.
5. the method with shaddock leather pectin according to claim 1 is characterized in that: step 2) in, the temperature of described concentrating under reduced pressure is 70～75 ℃.
6. the method with shaddock leather pectin according to claim 1, it is characterized in that: in the step 3), described time of repose is 20min.
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| CN2012105110742A CN102977226A (en) | 2012-12-03 | 2012-12-03 | Method for preparing pectin from shaddock peels |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017105A (en) * | 2014-06-19 | 2014-09-03 | 中国农业大学 | Method for extracting pectin from pepper skin slag |
| CN107495111A (en) * | 2017-09-08 | 2017-12-22 | 广东日可威食品原料有限公司 | A kind of health care fermented rice cake for preventing and treating high fat of blood and preparation method thereof |
| CN108047350A (en) * | 2018-01-04 | 2018-05-18 | 安徽工程大学 | A kind of method that pectin is extracted in laccase pretreatment from shaddock ped |
| CN109938151A (en) * | 2019-04-20 | 2019-06-28 | 高卫东 | A kind of processing of pomelo's sugar sweet and production method |
| CN110140854A (en) * | 2019-06-14 | 2019-08-20 | 仲恺农业工程学院 | Compound jam and preparation method thereof |
| CN112076109A (en) * | 2020-09-24 | 2020-12-15 | 岭南师范学院 | Shaddock peel pectin shower gel and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186628A (en) * | 2007-12-18 | 2008-05-28 | 广东省微生物研究所 | Method for extracting naringin and pectine from shaddock peel |
| CN102731681A (en) * | 2011-04-15 | 2012-10-17 | 吕维学 | Method for extracting pectin from orange peel and shaddock peel |
-
2012
- 2012-12-03 CN CN2012105110742A patent/CN102977226A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186628A (en) * | 2007-12-18 | 2008-05-28 | 广东省微生物研究所 | Method for extracting naringin and pectine from shaddock peel |
| CN102731681A (en) * | 2011-04-15 | 2012-10-17 | 吕维学 | Method for extracting pectin from orange peel and shaddock peel |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017105A (en) * | 2014-06-19 | 2014-09-03 | 中国农业大学 | Method for extracting pectin from pepper skin slag |
| CN107495111A (en) * | 2017-09-08 | 2017-12-22 | 广东日可威食品原料有限公司 | A kind of health care fermented rice cake for preventing and treating high fat of blood and preparation method thereof |
| CN108047350A (en) * | 2018-01-04 | 2018-05-18 | 安徽工程大学 | A kind of method that pectin is extracted in laccase pretreatment from shaddock ped |
| CN109938151A (en) * | 2019-04-20 | 2019-06-28 | 高卫东 | A kind of processing of pomelo's sugar sweet and production method |
| CN109938151B (en) * | 2019-04-20 | 2022-04-26 | 高卫东 | Processing and manufacturing method of pomelo peel candy |
| CN110140854A (en) * | 2019-06-14 | 2019-08-20 | 仲恺农业工程学院 | Compound jam and preparation method thereof |
| CN112076109A (en) * | 2020-09-24 | 2020-12-15 | 岭南师范学院 | Shaddock peel pectin shower gel and preparation method thereof |
| CN112076109B (en) * | 2020-09-24 | 2023-08-29 | 岭南师范学院 | Shaddock peel pectin shower gel and preparation method thereof |
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Application publication date: 20130320 |