CN104489074A - Preservative for storing and preserving fresh large cherry Brooks - Google Patents
Preservative for storing and preserving fresh large cherry Brooks Download PDFInfo
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- CN104489074A CN104489074A CN201410796613.0A CN201410796613A CN104489074A CN 104489074 A CN104489074 A CN 104489074A CN 201410796613 A CN201410796613 A CN 201410796613A CN 104489074 A CN104489074 A CN 104489074A
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Abstract
The invention relates to a preservative for storing and preserving fresh large cherry Brooks and belongs to the technical field of fruit and vegetable storage and preservation. The preservative for storing and preserving fresh large cherry Brooks contains chitosan, konjaku flour, pulullan and a preservative accelerant, wherein the preservative accelerant is more than one or two of pearl powder, the large cherry Brooks supercritical extractive, a loquat leaf aqueous extract and grape essential oil. The preservative is compounded by further adding a right amount of the pearl powder, the large cherry Brooks supercritical extractive, the loquat leaf aqueous extract or the grape essential oil on the basis that chitosan, konjaku flour and pulullan are compounded. Compared with the traditional preservative suitable for preserving fresh large cherry, the preservative for storing and preserving the large cherry, which is disclosed by the invention, can preferably keep the content of a soluble solid and titratable acid of the large cherry Brooks and can be used for reducing the rotting rate of the large cherry Brooks and prolonging the storage life.
Description
Technical field
The present invention relates to a kind of antistaling agent for preservation and freshness large cherry Brooks, belong to fruits and vegetable stock and preserving freshness field.
Background technology
Large cherry Brooks look delicate flavour is beautiful, nutritious, dark liking by consumers in general.But it is vigorous to adopt rear respiratory metabolism, very easily rots, at room temperature the shelf-life only has 5 ~ 7d to fresh fruit, and it picking time itself just meets high temperature season, if run into high temperature or rainy again when gathering, and fruit just very easily softening dehydration or rot.Under optimum refrigerated condition, (temperature: ± 1 DEG C, relative humidity: 85% ~ 95%), after refrigerating 60 days, rotting rate reaches about about 15% ~ 20%.
Shitosan possesses good film forming, in recent years preserve Kiwi berry, mango, strawberry, apple, peach and pear and other fruits time application show, can delayed fruit be old and feeble to a certain extent, reduce and rot, extend storage period, and have inhibitory action to multiple encountered pathogenic bacteria.Research experiment shows, the shitosan of 1.5% can keep soluble solid content and the titratable acid content of large cherry Brooks better, and can reduce the rotting rate of large cherry Brooks; But storage latter stage (when preserving to 45 days), rotting rate reaches unanimity with contrasting.
Konjaku is the herbaceos perennial of Araeceae Amorphophallus, and bulb contains abundant glucomannans (being called for short KG M), and it is the stocking property polysaccharide of konjaku, is also a kind of polysaccharide half fiber.Its structure is the huge macromolecule heteroglycan (molecular weight can reach more than 108 dalton) that is connected with the sweet key of 1. 4 pyranose with glucose of mannose mainly.It is reported, KG M, as food preservative, can suppress the breeding of aerobe, extends egg, meat, fish, fruits and vegetables freshness date.Experimental study shows, the konjaku dilution of 0.8 % can keep the soluble solid content of large cherry Brooks, titratable acid and V c content to a certain extent, and can reduce the rotting rate of large cherry Brooks; But storage latter stage (when preserving to 45 days), rotting rate reaches unanimity with contrasting.
Chinese patent 200910192541.8 discloses a kind of antisepsis antistaling agent containing pulullan polysaccharide, is be composited by 2 ~ 8% pulullan polysaccharides, 1 ~ 3% mannosan and 97 ~ 89% cosolvents; Can be used for the preservation of frozen food.
Summary of the invention
The object of the present invention is to provide a kind of antistaling agent that can improve fresh-keeping effect further.
In order to improve fresh-keeping effect further, inventor attempts shitosan, konjaku flour, pulullan polysaccharide to use as composite preservative according to special ratios is composite.But experimental result shows, relative to the fresh-keeping effect of shitosan, konjaku flour or pulullan polysaccharide, the fresh-keeping effect of this composite preservative does not significantly improve.The present invention studies discovery by experiment, after coating antistaling agent, effectively can hinder oxygen, all can suppress the effect that aerobe is bred, but original survival on the contrary can be rapider under the condition not having oxygen the anaerobe of fruit surface; Especially at anaphase storage, show more obvious.And on the basis that shitosan, konjaku flour and pulullan polysaccharide are composite, add appropriate pearl powder, large cherry Brooks supercritical extract, loguat leaf water extract or grape essential oil further and then can improve fresh-keeping effect further.
Technical scheme of the present invention
For an antistaling agent for preservation and freshness large cherry Brooks, containing shitosan 1 part, konjaku flour 0.68-0.73 part and pulullan polysaccharide 0.19-0.23 part, also containing fresh-keeping promoter;
Described fresh-keeping promoter is: one or more in pearl powder, large cherry Brooks supercritical extract, loguat leaf water extract and grape essential oil;
Wherein, pearl powder 0.15-0.18 part, large cherry Brooks supercritical extract 0.29-0.32 part, loguat leaf water extract 0.27-0.29 part, grape essential oil 0.005-0.009 part; Described part is weight portion.
The above-mentioned antistaling agent for preservation and freshness large cherry Brooks, preferably, described fresh-keeping promoter is made up of pearl powder, large cherry Brooks supercritical extract, loguat leaf water extract and grape essential oil.
The above-mentioned antistaling agent for preservation and freshness large cherry Brooks, optimum ratio is: shitosan 1 part, konjaku flour 0.69 part, pulullan polysaccharide 0.21 part, pearl powder 0.17 part, large cherry Brooks supercritical extract 0.31 part, loguat leaf water extract 0.28 part, grape essential oil 0.007 part.
The above-mentioned antistaling agent for preservation and freshness large cherry Brooks, can also contain water and acetic acid.Wherein, water is as solvent, and acetic acid is as cosolvent.
Described shitosan, konjaku flour, pulullan polysaccharide, pearl powder and grape essential oil are commercially available prod.
Described large cherry Brooks supercritical extract, be the stoning of large cherry Brooks is pulverized after, adopt conventional carbon dioxide supercritical extraction technology to obtain extract, then extract concentrated, product after drying.
A kind of wherein method obtaining large cherry Brooks supercritical extract provided by the invention: the stoning of large cherry Brooks is crushed to 20 orders, be placed in carbon dioxide abstraction still, under 25MPa, 50 DEG C of conditions, ethanol with 95% is for carrying agent, ethanol is 30% relative to the consumption of carbon dioxide, dynamic extraction 2h, flow velocity is 250L/h, extract; By concentrated for extract, drying and crushing to powdery, large cherry Brooks supercritical extract must be got.
Described loguat leaf water extract, refers to that loguat leaf decocts, product after concentrated, drying.The concrete following manner that can adopt is prepared from: add water in loguat leaf according to the part by weight of 1:80-100, decoct and filter to obtain decoction liquor in more than 1.5 hours, decoction liquor heating is concentrated into thick, and then dry, be crushed to powdery, obtain loguat leaf water extract.
Beneficial effect
The soluble solid of large cherry Brooks and the content of titratable acid can be kept better, and the rotting rate of large cherry Brooks can be reduced, extend the pot-life.
Detailed description of the invention
embodiment 1
The stoning of large cherry Brooks is crushed to 20 orders, is placed in carbon dioxide abstraction still, under 25MPa, 50 DEG C of conditions, ethanol with 95% is for carrying agent, and ethanol is 30%(volume fraction relative to the consumption of carbon dioxide), dynamic extraction 2h, flow velocity is 250L/h, extract; By concentrated for extract, drying and crushing to powdery, large cherry Brooks supercritical extract must be got.
Add water in loguat leaf according to the part by weight of 1:80-100, decoct more than 1.5 hours, filter to obtain decoction liquor, decoction liquor heating is concentrated into thick, and then dry, be crushed to powdery, obtain loguat leaf water extract.
Shitosan, deacetylation is 81.5%, commercially available.
Konjaku flour, pulullan polysaccharide, grape essential oil and pearl powder are commercially available prod; Wherein, pearl powder is the oral pearl powder of nanoscale.
Get shitosan 1g, konjaku flour 0.69g, pulullan polysaccharide 0.21g, pearl powder 0.17g, loguat leaf water extract 0.28g mix, be placed in 200ml beaker, in beaker, then add a small amount of 1% acetum fully miscible; Add large cherry Brooks supercritical extract 0.31g again and grape essential oil 0.007g mixes, obtain mixed liquor; By mixed liquor spraying dry, powdery preservation agent for storing can be obtained; Or in mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.
embodiment 2
Get shitosan 1g, konjaku flour 0.68g, pulullan polysaccharide 0.23g, pearl powder 0.15g, loguat leaf water extract 0.27g mix, and are placed in 200ml beaker, and in beaker, then add a small amount of 1% acetum fully miscible; Add large cherry Brooks supercritical extract 0.32g again and grape essential oil 0.005g mixes, obtain mixed liquor; In mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.Or directly by mixed liquor spraying dry, powdery preservation agent for storing can be obtained.Raw materials used same embodiment 1.
embodiment 3
Get shitosan 1g, konjaku flour 0.73g, pulullan polysaccharide 0.19g, pearl powder 0.18g, loguat leaf water extract 0.29g mix, and are placed in 200ml beaker, and in beaker, then add a small amount of 1% acetum fully miscible; Add large cherry Brooks supercritical extract 0.29g again and grape essential oil 0.009g mixes, obtain mixed liquor; In mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.Or directly by mixed liquor spraying dry, powdery preservation agent for storing can be obtained.Raw materials used same embodiment 1.
embodiment 4
Get shitosan 1g, konjaku flour 0.69g, pulullan polysaccharide 0.21g, pearl powder 0.17g mix, be placed in 200ml beaker, in beaker, then add a small amount of 1% acetum fully miscible, obtains mixed liquor; By mixed liquor spraying dry, powdery preservation agent for storing can be obtained; Or in mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.Raw materials used same embodiment 1.
embodiment 5
Get shitosan 1g, konjaku flour 0.69g, pulullan polysaccharide 0.21g, loguat leaf water extract 0.28g mix, be placed in 200ml beaker, in beaker, then add a small amount of 1% acetum fully miscible, obtains mixed liquor; By mixed liquor spraying dry, powdery preservation agent for storing can be obtained; Or in mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.Raw materials used same embodiment 1.
embodiment 6
Get shitosan 1g, konjaku flour 0.69g, pulullan polysaccharide 0.21g, large cherry Brooks supercritical extract 0.31g mix, be placed in 200ml beaker, in beaker, then add a small amount of 1% acetum fully miscible, obtains mixed liquor; By mixed liquor spraying dry, powdery preservation agent for storing can be obtained; Or in mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.Raw materials used same embodiment 1.
embodiment 7
Get shitosan 1g, konjaku flour 0.69g, pulullan polysaccharide 0.21g mixes, be placed in 200ml beaker, in beaker, then add a small amount of 1% acetum fully miscible, then add grape essential oil 0.007g and mix, and obtains mixed liquor; By mixed liquor spraying dry, powdery preservation agent for storing can be obtained; Or in mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.Raw materials used same embodiment 1.
comparative example 1
Get shitosan 1g, konjaku flour 0.69g and pulullan polysaccharide 0.21g mixes, and is placed in 200ml beaker, and in beaker, then add a small amount of 1% acetum fully miscible, obtains mixed liquor; In mixed liquor, add 1% acetum be settled to 100ml; Namely liquid preservation agent for storing is obtained.Raw materials used same embodiment 1.
comparative example 2
Get shitosan 1.5g, be dissolved in 1% acetum, be made into 1.5 % dilutions; Be preservation agent for storing.Raw materials used same embodiment 1.
comparative example 3
Get konjaku flour 0.8g, be dissolved in 1% acetum, be made into 0.8 % dilution; Be preservation agent for storing.Raw materials used same embodiment 1.
comparative example 4
Pulullan polysaccharide 2g, is dissolved in 1% acetum, is made into 2 % dilutions; Be preservation agent for storing.Raw materials used same embodiment 1.
effect test
Test large cherry Brooks picks up from Shandong Fruit-tree Inst. nursery.The automatic freezer of civil engineering assembling combined type on-hook that freezer is developed for this, fruit practical thickness is polyvinyl chloride (P V C) the freshness protection package packaging of 0.03 mm, every bag of capacity 1kg.The large cherry Brooks of the outwardly sound of harvesting is equally divided into 12 groups, and the product shape such as size, maturity often organizing large cherry Brooks is suitable, has comparativity.Often organize large cherry Brooks, soluble solid average content is 14.5 ~ 15.0%, titratable acid average content is 0.97%, average hardness is 0.7kg/cm
2.Soak with the preservation agent for storing of embodiment 1-7, comparative example 1-4 respectively, each group large cherry Brooks soaks 3 minutes, then proceeds in freezer and preserves, Ku Wen-1 ~ 1 DEG C; Wherein one group of large cherry Brooks does not soak preservation agent for storing, as blank.Enter storage rear the results of regular determination hardness of fruit, fruit rot rate, soluble solid content, titratable acid content.Wherein, the 45th day time determination data as shown in table 1; Determination data when the 60th day is as shown in table 2.
Table 1
；
Table 2
。
His-and-hers watches 1 and table 2 carry out analysis and can draw:
(1) shitosan, konjaku flour, pulullan polysaccharide composite after as antistaling agent (comparative example 1) fresh-keeping effect be used alone shitosan, konjaku flour, pulullan polysaccharide are suitable as the fresh-keeping effect of antistaling agent (comparative example 2-4);
(2) shitosan, konjaku flour, pulullan polysaccharide composite after as antistaling agent (comparative example 1), be used alone glycan, konjaku flour, pulullan polysaccharide as antistaling agent (comparative example 2-4), the fresh-keeping effect 45 days time is all obviously better than the fresh-keeping effect of blank group; 60 days time, the fresh-keeping effect of fresh-keeping effect and blank group is suitable;
(3) pearl powder, loquat-leaf extract, large cherry Brooks supercritical extract and grape essential oil are composite afterwards as the facilitation effect of fresh-keeping promoter (embodiment 1-3) according to a certain percentage, are obviously better than being used alone pearl powder, loquat-leaf extract, large cherry Brooks supercritical extract or the grape essential oil facilitation effect as fresh-keeping promoter (embodiment 4-7).As can be seen here, after pearl powder, loquat-leaf extract, large cherry Brooks supercritical extract and grape essential oil are composite, the interphase interaction of each composition, thus improve facilitation effect each other, cause composite facilitation effect to be afterwards obviously better than the superposition of respective facilitation effect.Described facilitation effect refers to, the freshness-keeping ginseng numerical value of embodiment 1-7 is respectively relative to the percentage that the freshness-keeping ginseng numerical value of comparative example 1 improves;
(4) adopt antistaling agent of the present invention (being added with fresh-keeping promoter) fresh-keeping after, 45 days, 60 days time, every fresh-keeping parameter index is all obviously better than the antistaling agent (comparative example 1) that do not add fresh-keeping promoter; Thus further increase fresh-keeping effect;
(5) compared with blank group, along with the prolongation of preservation and freshness time, the fresh-keeping effect not adding the antistaling agent (comparative example 1) of fresh-keeping promoter obviously declines; And the antistaling agent (embodiment 1-4) being added with fresh-keeping promoter still possesses excellent fresh-keeping effect; Thus extend storage & fresh-keeping period.
Claims (6)
1. for an antistaling agent for preservation and freshness large cherry Brooks, it is characterized in that, containing shitosan 1 part, konjaku flour 0.68-0.73 part and pulullan polysaccharide 0.19-0.23 part, also containing fresh-keeping promoter;
Described fresh-keeping promoter is: one or more in pearl powder, large cherry Brooks supercritical extract, loguat leaf water extract and grape essential oil;
Wherein, pearl powder 0.15-0.18 part, large cherry Brooks supercritical extract 0.29-0.32 part, loguat leaf water extract 0.27-0.29 part, grape essential oil 0.005-0.009 part; Described part is weight portion.
2. according to claim 1 for the antistaling agent of preservation and freshness large cherry Brooks, it is characterized in that, containing water and acetic acid.
3. according to claim 1 or 2 for the antistaling agent of preservation and freshness large cherry Brooks, it is characterized in that, described fresh-keeping promoter is made up of pearl powder, large cherry Brooks supercritical extract, loguat leaf water extract and grape essential oil.
4. according to claim 3 for the antistaling agent of preservation and freshness large cherry Brooks, it is characterized in that, containing shitosan 1 part, konjaku flour 0.69 part, pulullan polysaccharide 0.21 part, pearl powder 0.17 part, large cherry Brooks supercritical extract 0.31 part, loguat leaf water extract 0.28 part, grape essential oil 0.007 part.
5. according to claim 4 for the antistaling agent of preservation and freshness large cherry Brooks, it is characterized in that, the preparation method of described large cherry Brooks supercritical extract: the stoning of large cherry Brooks is crushed to 20 orders, be placed in carbon dioxide abstraction still, under 25MPa, 50 DEG C of conditions, the ethanol with 95% is for carrying agent, ethanol is 30% relative to the consumption of carbon dioxide, dynamic extraction 2h, flow velocity is 250L/h, extract; By concentrated for extract, drying and crushing to powdery, large cherry Brooks supercritical extract must be got.
6. according to claim 4 for the antistaling agent of preservation and freshness large cherry Brooks, it is characterized in that, the preparation method of described loguat leaf water extract: add water in loguat leaf according to the part by weight of 1:80-100, decoct and filter to obtain decoction liquor in more than 1.5 hours, decoction liquor heating is concentrated into thick, and then dry, be crushed to powdery, obtain loguat leaf water extract.
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Cited By (4)
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| CN104824136A (en) * | 2015-05-15 | 2015-08-12 | 伍祖林 | Fruit fresh-keeping paper |
| CN107853391A (en) * | 2017-09-29 | 2018-03-30 | 杨凌农科大无公害农药研究服务中心 | A kind of loguat leaf Chinese torreya aril composite preservative and preparation method thereof |
| CN108419828A (en) * | 2018-03-21 | 2018-08-21 | 江西农业大学 | A kind of citrus comprising loquat-leaf extract adopts rear plant antistaling agent |
| CN108850780A (en) * | 2018-06-26 | 2018-11-23 | 桃江县南北西东土特产销售有限公司 | A kind of julienned pork and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104824136A (en) * | 2015-05-15 | 2015-08-12 | 伍祖林 | Fruit fresh-keeping paper |
| CN107853391A (en) * | 2017-09-29 | 2018-03-30 | 杨凌农科大无公害农药研究服务中心 | A kind of loguat leaf Chinese torreya aril composite preservative and preparation method thereof |
| CN108419828A (en) * | 2018-03-21 | 2018-08-21 | 江西农业大学 | A kind of citrus comprising loquat-leaf extract adopts rear plant antistaling agent |
| CN108850780A (en) * | 2018-06-26 | 2018-11-23 | 桃江县南北西东土特产销售有限公司 | A kind of julienned pork and preparation method thereof |
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