CN100548129C - A kind of multi-functional antistaling agent for fruits and vegetables - Google Patents
A kind of multi-functional antistaling agent for fruits and vegetables Download PDFInfo
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- CN100548129C CN100548129C CNB2006101258444A CN200610125844A CN100548129C CN 100548129 C CN100548129 C CN 100548129C CN B2006101258444 A CNB2006101258444 A CN B2006101258444A CN 200610125844 A CN200610125844 A CN 200610125844A CN 100548129 C CN100548129 C CN 100548129C
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Abstract
Utilize marine polysaccharide and rare earth element to prepare a kind of multi-functional antistaling agent for fruits and vegetables.China's fruits and vegetables output is at the forefront in the world, because fruits and vegetables are perishable and limited by fresh-keeping reserve capabillity after harvesting, causes fruits and vegetables lose after harvesting seriously, and annual loss late is about 25%~30%, loses nearly 80,000,000,000 yuan of total value.In addition, owing to need every year a large amount of organophosphorus pesticides be used to prevent and treat the fruits and vegetables disease and pest, its residual harm that brings also can not be ignored.Therefore, how to improve the storage period of fruits and vegetables and reduce the residual of organophosphorus pesticide, be the urgent problem that people extremely are concerned about always.The present invention utilizes marine polysaccharide and rare earth element to prepare the marine polysaccharide rare earth compounding.Complex filmed not only has preservation to fruits and vegetables in fruit and vegetable surfaces, can also degrading organic phosphor pesticides.This complex cost is low, and is easy to operate simple, is a kind of novel fruit and vegetable fresh-keeping agent, is widely used in fields such as fruits and vegetables preservation and processings of farm products.
Description
Technical field
The present invention utilizes marine polysaccharide and rare earth element to prepare a kind of multi-functional antistaling agent for fruits and vegetables.This antistaling agent has in the hydrolysis fruits and vegetables organophosphorus pesticide and function such as fresh-keeping, is a kind of novel fruit and vegetable fresh-keeping agent, is widely used in fields such as fruits and vegetables preservation and processings of farm products.
Background technology
China's fruits and vegetables output is at the forefront in the world, but is subjected to fresh-keeping reserve capabillity restriction, and it is serious to cause fruits and vegetables to lose in the process of circulation after harvesting, and the annual loss late of fruits and vegetables is about 25%~30%, nearly 80,000,000,000 yuan of loss total value.Most widely used in the world postharvest technology of fruits and vegetables is air conditioned storage and cryopreservation at present.But because controlled atmosphere and cryopreservation investment are big, China is difficult to popularize in a short time.And, need every year a large amount of organophosphorus pesticides be used to prevent and treat the fruits and vegetables disease and pest because China is a fruits and vegetables big producing country.Though organophosphorus pesticide has great role on the volume increase of fruits and vegetables is guaranteed the quality, its residual harm that brings but can not be ignored.Therefore, how to improve the storage period of fruits and vegetables and reduce the residual of organophosphorus pesticide, be the urgent problem that people extremely are concerned about always.
Marine polysaccharide has good film-forming property, good permeability, but characteristics such as sterilization, it is coated fruit and vegetable surfaces, can form the thin semipermeable membrane of one deck, can suppress water evaporates, regulate respiration, prevent the microorganism dip-dye, improve lustrous surface, regulate the physiological metabolism after fruit is adopted, and many microorganisms are had inhibitory action, can prolong the freshness date of fruits and vegetables effectively, and safety non-toxic.Rare earth ion not only has bacteriostasis more widely, and the ability of degrading organic phosphor pesticides is arranged, but rare earth ion easily is gel under neutral physiological condition, has limited its application in fresh-keeping.Marine polysaccharide has good complexing because of having adjacent hydroxyl and amino in its molecule to some metal ions especially rare earth metal.Therefore marine polysaccharide and rare earth complex are prepared the marine polysaccharide rare earth compounding and film, the degraded of the fresh-keeping and organophosphorus pesticide of fruits and vegetables is had good effect in fruit and vegetable surfaces.
Summary of the invention
The present invention utilizes marine polysaccharide and rare earth element to prepare the marine polysaccharide rare earth compounding, and it not only has preservation to fruits and vegetables, prolongs storage period about 5 days; Its degrade the in addition effect of organophosphorus pesticide in the fruits and vegetables, the organic phosphorus pesticide degradation rate reaches more than 60%.This complex cost is low, and is easy to operate simple, is easy to apply.
Technological process is as follows: rare earth is dissolved in the acetum, fully add marine polysaccharide behind the mixing, swelling treats to dissolve fully the back magnetic agitation, regulates pH, separate out complex, continue reaction 3~5 hours, fully clean decompress filter with the mixed solvent of ethanol and acetone, 40 ℃ of vacuum drying promptly get the marine polysaccharide rare earth compounding.During use the marine polysaccharide rare earth compounding that makes is dissolved in the acetum, fully pH is reconciled in the dissolving back, and fresh fruit of vegetables was flooded in the complex that makes 1~15 minute, takes out the back natural air drying, and room temperature storage gets final product.
The specific embodiment
To be dissolved in 0.1%~1% acetum with respect to the rare earth of acetum 0.01%~0.09%, fully add marine polysaccharide behind the mixing with respect to acetum 0.2%~2%, swelling 12~18 hours treated to dissolve fully the back magnetic agitation 12~24 hours, regulated pH to 5.0~7.0, separate out complex, continue reaction 3~5 hours, with the fully cleaning of mixed solvent (1: 1) of ethanol and acetone, decompress filter, 40 ℃ of vacuum drying promptly get the marine polysaccharide rare earth compounding.During use the marine polysaccharide rare earth compounding that makes is dissolved in 0.1%~1% acetum, fully pH to 2.0~7.0 are reconciled in the dissolving back, and fresh fruit of vegetables was flooded in the complex that makes 1~15 minute, take out the back natural air drying, and room temperature storage gets final product.
Example one: get ammonium ceric nitrate 0.06g, among the acetum 100ml of adding 0.5%, abundant stirring and evenly mixing, add the 0.4g shitosan, placed 12 hours natural swelling under the room temperature, after treating to dissolve fully, magnetic agitation 24 hours is regulated pH to 5.0, separate out complex, continue reaction 3 hours, with the fully cleaning of mixed solvent (1: 1) of ethanol and acetone, decompress filter, 40 ℃ of vacuum drying promptly get the marine polysaccharide rare earth compounding.The marine polysaccharide rare earth compounding that makes is dissolved in 0.5% acetum, and fully pH to 4.0 is reconciled in the dissolving back, and fresh fruit of vegetables was flooded 10 minutes in the complex that makes, and takes out the back natural air drying, and room temperature storage gets final product.
Example two: get ammonium ceric nitrate 0.02g, among the acetum 100ml of adding 0.9%, abundant stirring and evenly mixing, add the 1g shitosan, placed 16 hours natural swelling under the room temperature, after treating to dissolve fully, magnetic agitation 12 hours is regulated pH to 6.0, separate out complex, continue reaction 5 hours, with the fully cleaning of mixed solvent (1: 1) of ethanol and acetone, decompress filter, 40 ℃ of vacuum drying promptly get the marine polysaccharide rare earth compounding.The marine polysaccharide rare earth compounding that makes is dissolved in 0.9% acetum, and fully pH to 6.0 is reconciled in the dissolving back, and fresh fruit of vegetables was flooded 3 minutes in the complex that makes, and takes out the back natural air drying, and room temperature storage gets final product.
Example three: get cerium chloride 0.04g, among the acetum 100ml of adding 0.2%, abundant stirring and evenly mixing, add the 1.5g algal polysaccharide, placed 16 hours natural swelling under the room temperature, after treating to dissolve fully, magnetic agitation 18 hours is regulated pH to 7.0, separate out complex, continue reaction 4 hours, with the fully cleaning of mixed solvent (1: 1) of ethanol and acetone, decompress filter, 40 ℃ of vacuum drying promptly get the marine polysaccharide rare earth compounding.The marine polysaccharide rare earth compounding that makes is dissolved in 0.2% acetum, and fully pH to 6.0 is reconciled in the dissolving back, and fresh fruit of vegetables was flooded 2 minutes in the complex that makes, and takes out the back natural air drying, and room temperature storage gets final product.
Claims (7)
- The preparation method of 1 one kinds of multi-functional antistaling agent for fruits and vegetables, its feature preparation flow is as follows: rare earth is dissolved in the acetum, fully adds marine polysaccharide behind the mixing, swelling, treat to dissolve fully the back magnetic agitation, regulate pH, separate out complex, continue reaction 3~5 hours, mixed solvent with ethanol and acetone fully cleans, decompress filter, 40 ℃ of vacuum drying, obtain the marine polysaccharide rare earth compounding, be multi-functional antistaling agent for fruits and vegetables.
- The preparation method of 2 a kind of multi-functional antistaling agent for fruits and vegetables according to claim 1, the concentration of acetum are 0.1%~1%.
- The preparation method of 3 a kind of multi-functional antistaling agent for fruits and vegetables according to claim 1, polysaccharide is shitosan or algal polysaccharide, the addition of polysaccharide is with respect to 0.2%~2% (g/ml) of acetum.
- The preparation method of 4 a kind of multi-functional antistaling agent for fruits and vegetables according to claim 1, rare earth is any in ammonium ceric nitrate, cerous nitrate, ceric sulfate, the cerium chloride, the addition of rare earth is with respect to 0.01%~0.09% (g/ml) of acetum.
- The preparation method of 5 a kind of multi-functional antistaling agent for fruits and vegetables according to claim 1, swelling time is 12~18 hours behind the adding marine polysaccharide.
- The preparation method of 6 a kind of multi-functional antistaling agent for fruits and vegetables according to claim 1 adds marine polysaccharide, swelling, and treating to dissolve fully the back magnetic agitation time is 12~24 hours.
- The preparation method of 7 a kind of multi-functional antistaling agent for fruits and vegetables according to claim 1 regulates pH after the magnetic agitation, its pH adjustable range is 5.0~7.0.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNB2006101258444A CN100548129C (en) | 2006-08-29 | 2006-08-29 | A kind of multi-functional antistaling agent for fruits and vegetables |
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CNB2006101258444A CN100548129C (en) | 2006-08-29 | 2006-08-29 | A kind of multi-functional antistaling agent for fruits and vegetables |
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CN1947531A CN1947531A (en) | 2007-04-18 |
CN100548129C true CN100548129C (en) | 2009-10-14 |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105520950B (en) * | 2014-09-28 | 2018-06-26 | 新乡医学院 | Application of the fucoidin in the drug for preparing prevention caused by organophosphorus pesticide male reproduction toxicity |
CN105602088B (en) * | 2016-03-24 | 2017-11-07 | 福建师范大学泉港石化研究院 | A kind of preparation method of the fresh-keeping film master batch of flat mushroom containing rare earth compounding |
CN105585771B (en) * | 2016-03-24 | 2017-11-24 | 福建师范大学 | A kind of preparation method of the fresh-keeping film master batch of sweet cherry containing rare earth compounding |
CN107568327A (en) * | 2017-09-19 | 2018-01-12 | 海南江河农药化工厂有限公司 | A kind of agent of marine organism extract bacteriostasis, preservation, its preparation method and its application |
CN108219986A (en) * | 2017-12-18 | 2018-06-29 | 董晓 | A kind of preparation method of efficient fruits and vegetables detergent for washing out agricultural chemicals |
CN108835511A (en) * | 2018-06-04 | 2018-11-20 | 陕西日日新生物科技有限公司 | A kind of fruits and vegetables coloring modifying agent |
CN111893002A (en) * | 2020-09-09 | 2020-11-06 | 邓文鹏 | Antibacterial fruit and vegetable cleaning agent for removing pesticides and preparation method thereof |
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