CN103931755A - Preservation method for collected longan fruits - Google Patents
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- CN103931755A CN103931755A CN201410149791.4A CN201410149791A CN103931755A CN 103931755 A CN103931755 A CN 103931755A CN 201410149791 A CN201410149791 A CN 201410149791A CN 103931755 A CN103931755 A CN 103931755A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a preservation method for collected longan fruits. The fruit preservation method including the processes of harvesting, selecting fruits, grading, cleaning, soaking by a preservative, airing, packaging and storing is built aiming at autolysis of longan fruit pulp, and belongs to the technical field of fruit and vegetable preservation. By adopting the preservation method disclosed by the invention, the fresh longan fruits can be subjected to preservation treatment by using the preservative on the basis of keeping the eating quality of the fresh longan fruits, so that the problem of pulp autolysis in storage and preservation process of the collected longan fruits is solved, the preservation method is low in treatment cost, has low requirement on equipment, is safe, energy-saving and strong in operability, and easy to greatly popularize and use in production.
Description
Technical field
The invention belongs to postharvest technology of fruits and vegetables field, be specifically related to a kind of preservation method of adopting rear longan fruit.
Background technology
Longan (
dimocarpus longanlour.), being commonly called as " longan ", is a kind of important subtropical zone famous and high-quality fruit of southern china, is mainly distributed in Fujian, Guangdong, Guangxi, Hainan, Taiwan etc. and economizes (district).Longan has higher medical value and health-care efficacy, have the title in north, south " longan " " ginseng ", is deeply subject to domestic and international consumer's welcome.At present, China longan cultivated area and annual production all occupy first place in the world.Yet, China's longan maturity period is in high temperature season in 7 ~ September, adopt rear quality deterioration rapid, under room temperature condition, preserve, adopt rear pulp fast softening, stream juice and rot, it is characterized in that shell seems complete, and pulp dissolves, flows juice and be tending towards rotten to the corn, this phenomenon is called " pulp self-dissolving " (Aril breakdown), has a strong impact on longan edible quality and commodity value, is one of principal element of the long-time storage of restriction longan fruit and long distance transportation sale.
Longan pulp self-dissolving appears at the middle and later periods of postharvest storage conventionally.By research, find, the generation of adopting the self-dissolving of rear longan fruit pulp may be due to cell wall degrading enzyme increased activity such as pectinesterase (PME), polygalacturonase (PG), beta galactosidase (β-Gal) and cellulases (CX), the degraded of the cell wall substances such as catalysis pectin substance, cellulose, hemicellulose, cause the destruction of cell wall structure, thereby cause the self-dissolving of longan fruit pulp.Further In vitroandin vivotrial confirms, active oxygen (ROS) free radical, particularly hydroxyl radical free radical (OH) play a crucial role in the cell wall substance degraded that the self-dissolving of longan fruit pulp occurs after adopting.By research, also find, burnt maize ear rot bacterium [
lasiodiplodia theobromae(Pat.) Griff. & Maubl], Phomopsis [
phomopsis longanaechi.] etc. pathogen infection adopt rear longan fruit can cause longan pulp ultra-oxygen anion free radical (
) generation speed accelerate, promote longan pulp cell wall degradation enzymatic activity to raise and cell wall substance degraded, accelerate the structural deterioration of longan pulp cell tissue, thereby accelerate to adopt rear longan fruit pulp self-dissolving generation.Although 0 ℃ ~ 3 ℃ cryopreservations or 4 % ~ 6% O
2, 6 % ~ 8% CO
2gas componant can delay to adopt the self-dissolving of rear longan fruit pulp in conjunction with the measures such as controlled atmosphere cold storage of 1 ℃, extends longan fruit freshness date.But because cryopreservation or controlled atmosphere cold storage need to consume a large amount of energy, make to adopt post processing cost high and be difficult to large-scale popularization aborning and use.Therefore, develop the rear longan fruit pulp self-dissolving control technology of adopting safe, energy-conservation, easy easy popularization and become extending longan shelf life industry development urgent problem.
At present related food antistaling agent is processed to reduce and is adopted rear longan fruit pulp free-radical generating and control pulp self-dissolving, and food preservative is processed having no research report with the impact of adopting the self-dissolving of rear longan fruit pulp and control relevant cell wall metabolism.
Summary of the invention
The object of the invention is to, for adopting rear longan fruit pulp autolysis, provides a kind of preservation method of adopting rear longan fruit, the method can reduce adopt ultra-oxygen anion free radical in rear longan fruit pulp (
) generation speed, reduce the activity of the cell wall degrading enzymes such as longan pulp pectinesterase (PME), polygalacturonase (PG), beta galactosidase (β-Gal) and cellulase (CX), reduce the degraded of the cell wall substances such as pectin substance, cellulose, hemicellulose, thereby control the generation of adopting the self-dissolving of rear longan fruit pulp.The longan fruit of treated mistake can reduce pulp self-dissolving index, keeps good fruit quality and mouthfeel, extends longan fruit freshness date, and less demanding, workable to equipment of the inventive method.
For achieving the above object, the present invention adopts following technical scheme:
Adopting a preservation method for rear longan fruit, is for adopting rear longan fruit pulp autolysis, a set of fresh preservation method of gathering, select fruit, classification, cleaning, antistaling agent to soak, dry, pack, preserve that comprises of foundation.
Concrete steps are as follows:
(1) gather: select fine day eight to the ninety percent ripe longan fruits of gathering;
(2) select fruit, classification: the longan fruit of gathering is selected to fruit, classification, select consistent, big or small even, the consistent longan fruit of color and luster of maturity, reject the longan fruit that has mechanical damage or disease and pest;
(3) clean: the longan fruit after choosing fruit, classification is cleaned with running water, to remove dust, dirt and the part microorganism on longan fruit surface;
(4) antistaling agent soaks: by the longan fruit antistaling agent immersion treatment after cleaning;
(5) dry: the longan fruit after soaking is dried to processing, to remove the moisture on longan fruit surface;
(6) packing: longan fruit dries the thick polythene film bag modified-atmosphere package of rear use 0.015 mm;
(7) storage: packaged longan fruit is at room temperature preserved.
The food additives solution that the immersion of antistaling agent described in step (4) is is 0.01% ~ 0.4% by mass body volume concentrations mixes, and makes antistaling agent, then uses antistaling agent immersion treatment 10 min ~ 20 min.
Described food additives are two or three in superoxide dismutase, Calcium Ascorbate, phytic acid, vine polyphenol.
All the other each operation, comprise gather, select fruit, classification, clean, dry, pack, preserve be storage fruit and vegetable generally adopt post-processing approach.
remarkable advantage of the present invention is:
(1) the present invention's antistaling agent immersion treatment used belongs to processing method nontoxic, non agricultural chemical residuum, and antistaling agent composition superoxide dismutase, Calcium Ascorbate, phytic acid, vine polyphenol are food additives, have advantages of safe.
(2) the present invention adopts food preservative to process adopting rear longan fruit, can make longan fruit under the room temperature of 22 ℃ ~ 28 ℃, preserve 8 d ~ 10 d
,and longan pulp still flexible, have no obvious pulp autolysis, solved the quality deterioration problem that rear longan fruit causes due to pulp self-dissolving in preservation and freshness process of adopting, improve the storage property of longan fruit.
(3) method of the present invention can better keep longan fruit quality and mouthfeel, extends longan fruit freshness date, for adopting the control of rear longan fruit pulp self-dissolving and the prolongation of freshness date provides theoretical foundation and practical advice.
(4) processing method of the present invention has overcome and has adopted 0 ℃ ~ 3 ℃ cryopreservations of rear longan fruit or 4 % ~ 6% O
2, 6 % ~ 8% CO
2gas componant need to consume a large amount of energy while controlling longan pulp self-dissolving in conjunction with 1 ℃ of controlled atmosphere cold storage, adopt the shortcoming that post processing cost is high, be difficult to aborning large-scale popularization use, developed a kind of processing cost low, energy-conservation, be easy to the new processing method of adopting rear longan fruit that large-scale popularization is used aborning.
(5) present device is less demanding, is easy to control, workable, can effectively solve the pulp self-dissolving problem of adopting in rear longan fruit preservation process, is applicable to adopt the fresh-keeping large-scale production and application of rear longan fruit.
Accompanying drawing explanation
Fig. 1 is unprocessed and processes the impact on longan pulp self-dissolving index after adopting through the inventive method.
Fig. 2 be unprocessed with through the inventive method, process longan pulp after adopting in ultra-oxygen anion free radical (
) impact that produces speed.
Fig. 3 is impact unprocessed and pectinesterase enzymatic activity in the inventive method is processed longan pulp after adopting.
Fig. 4 is impact unprocessed and polygalacturonase activity in the inventive method is processed longan pulp after adopting.
Fig. 5 is impact unprocessed and betagalactosidase activity in the inventive method is processed longan pulp after adopting.
Fig. 6 is unprocessed and processes the impact on longan pulp cellulase activity after adopting through the inventive method.
The specific embodiment
Take undressed longan fruit as contrast, preserve respectively under the same conditions 10 d with the longan fruit after processing by method of the present invention, and in storage 0,2,4,6,8,10 d to the pulp self-dissolving index of two kinds of longan fruits, ultra-oxygen anion free radical (
) produce speed, pectinesterase enzymatic activity, polygalacturonase activity, betagalactosidase activity and cellulase activity and measure, relatively both are on adopting the impact of rear longan fruit pulp autolysis.
assay method is as follows:
1. longan pulp self-dissolving index
Get at random 50 fruits, shell, according to pulp self-dissolving area and whole pulp area ratio (A), pulp self-dissolving degree is divided into 5 grades: 0 grade for flexible, the pulp of pulp is without self-dissolving; 1 grade is pulp deliquescing, A < 1/4; 2 grades is pulp deliquescing, stream juice, 1/4≤A < 1/2; 3 grades is pulp deliquescing, stream juice, 1/2≤A < 3/4; 4 grades is that pulp is rotten to the corn, A >=3/4; Be calculated as follows again pulp self-dissolving index:
Pulp self-dissolving index=Σ (pulp self-dissolving progression * this grade of fruit number)/total fruit number.
Ultra-oxygen anion free radical in longan pulp (
) produce the mensuration of speed
Get at random 10 longan fruits, shell, get pulp 5 g, add the phosphate buffer that appropriate 65 mmol/LpH values are 7.8 [including the cupral (DDTC) of 10 mmol/L] to carry out ice bath grinding, afterwards at 4 ℃ 12 000 *
gcentrifugal 20 min, supernatant for ultra-oxygen anion free radical (
) produce the mensuration of speed.Reaction system during mensuration comprises 1.5 mL supernatants, 2.3 mL phosphate buffers, 0.2 mL 10 mmol/L hydroxylamine hydrochlorides, 3 mL
a-Nai amine and 3 mL sulfanilic acid.20 min that develop the color at 25 ℃ after mixing, measure at wavelength 530 nm places afterwards
oDvalue, changes 1.5 mL phosphate buffers into as blank using 1.5 mL supernatants.From NaNO
2in the calibration curve of reaction, obtain it and produce speed, result represents with nmol/gFW.
3. the extraction of cell wall degrading enzyme and determination of activity in longan pulp
(1) extraction of longan pulp cell wall degrading enzyme enzyme liquid
Longan pulp cell wall degrading enzyme enzyme liquid according to document (Andrews P K, Li S L. Cell wall hydrolytic enzyme activity development of nonclimateric sweet cherry (
prunus aviuml.) fruit [J]. Journal of Horticultural Science and Biotechnology, 1995,70 (4): 561-568) described method is extracted.Get at random 10 longan fruits, shell, get pulp 5 g, add 10 mL 40 mmol/LpH5.2 sodium acetate extraction buffers (to include 100 mmol/L NaCl, 2%(
v/V) mercaptoethanol, 5%(
w/V) PVP(K-30)), ice bath grinds, at 4 ℃ 15000 *
gcentrifugal 20 min, get supernatant for the mensuration of cell wall degradation enzymatic activity.
(2) mensuration of longan pulp cell wall degradation enzymatic activity
1. the mensuration of pectinesterase enzymatic activity
According to document (Lin T P, Liu C C, Chen S W, et al. Purification and characterization of pectinmethylesterase from
ficus awkeotsangmakino achenes [J]. Plant Physiology, 1989,91:1445-1453) described method is measured, substrate is citrus pectin (Sigma company), the enzyme dosage of consumption 1 nmol NaOH per hour of take is 1 pectinesterase unit of enzyme activity (U), and result is with U/mg Representation of Proteins.
2. the mensuration of polygalacturonase activity
According to document (Gross K C. A rapid and sensitive spectrophotometric method for assaying polygalacturonase using 2-Cyanoacetamide [J]. Journal of Horticultural Science and Biotechnology, 1982, 17 (6): 933-934) described method is measured, substrate is polygalacturonase (Sigma company), the enzyme dosage of generation 1 μ mol galacturonic acid per hour of take is 1 polygalacturonase activity unit (U), result is with U/mg Representation of Proteins.
3. the mensuration of betagalactosidase activity
According to document (Carrington C M S, Greve L C, Labavitch J M. Cell wallmetabolism in ripening fruit VI. Effect of the antisense polygalacturonase gene on cell wall changes accompanying ripening in transgenic tomatoes [J]. Plant Physiology, 1993, 103:429-434), substrate is that the described method of P-nitrobenzene-β-D-galactopyranoside (Sigma company) is measured, the enzyme dosage of the p-nitrophenol of generation 1 μ mol per hour of take is 1 betagalactosidase activity unit (U), result is with U/mg Representation of Proteins,
4. the mensuration of cellulase activity
According to file (Andrews P K, Li S L. Cell wall hydrolytic enzyme activity development of nonclimateric sweet cherry (
prunus aviuml.) fruit [J]. Journal of Horticultural Science and Biotechnology, 1995,70 (4): 561-568) described method is measured, substrate is carboxymethyl cellulose (Sigma company), the enzyme dosage of generation 1 μ mol glucose per hour of take is 1 cellulase activity unit (U), and result is with U/mg Representation of Proteins.
As shown in Figure 1, with the prolongation of storage time, both pulp self-dissolving indexes all have rising to longan pulp self-dissolving assessment of indices result, but through longan fruit and the undressed longan fruit comparison of antistaling agent immersion treatment, its pulp self-dissolving index obviously declines.Ultra-oxygen anion free radical (
) produce speed measurement result as shown in Figure 2, the measurement result of 4 kinds of cell wall degradation enzymatic activitys as shown in Fig. 3,4,5,6, the pulp ultra-oxygen anion free radical of longan fruit after safe antistaling agent is processed (
) produce speed, cell wall degrading enzyme (pectinesterase, polygalacturonase, beta galactosidase and cellulase) activity all more undressed longan fruit decline to some extent, illustrate the inventive method can reduce adopt rear longan fruit pulp ultra-oxygen anion free radical (
) produce the activity of speed and cell wall degrading enzyme, so the inventive method can effectively control and adopt the self-dissolving of rear longan fruit pulp, is applicable to adopt the fresh-keeping of rear longan fruit.
The present invention is described further as example to take the control of the main Longan Cultivation kind of China ' good fortune eye ' fruit pulp self-dissolving.
Embodiment 1:
Adopting a preservation method for rear longan fruit, is for adopting rear longan fruit pulp autolysis, a set of fresh preservation method of gathering, select fruit, classification, cleaning, antistaling agent to soak, dry, pack, preserve that comprises of foundation.
Concrete steps are as follows:
(1) gather: the harvest maturity of longan fruit is ninety percent ripe, the 9:00 ~ 11:00 after fine day dew in morning is dry carries out fruit picking;
(2) choosing fruit, classification: the longan fruit after gathering is selected to fruit, classification, rejecting has the longan fruit of mechanical damage or disease and pest, selects the longan fruit of maturity consistent, big or small evenly (13 ~ 14 grams of single fruit weights), color and luster consistent (fruit appearance is light yellow);
(3) clean: the longan fruit after choosing fruit, classification is cleaned with mobile running water, to remove dust, dirt and the part microorganism on longan fruit surface;
(4) antistaling agent soaks: the plant acid solution that the ascorbic acid calcium solution that is 0.2% by mass body volume concentrations and mass body volume concentrations are 0.01% by volume 1:2 mixes, and makes antistaling agent, then by antistaling agent immersion treatment 20 min for the longan fruit after cleaning;
(5) dry: the longan fruit after soaking is dried to processing, to remove the moisture on longan fruit surface;
(6) packing: longan fruit dries the thick polythene film bag modified-atmosphere package of rear use 0.015 mm, 50 of every packed fruits;
(7) storage: packaged longan fruit is at room temperature preserved.
' good fortune eye ' longan fruit after processing is preserved 8 d under the room temperature of 22 ℃ ~ 28 ℃
,longan pulp still flexible, have no obvious longan pulp self-dissolving, extended longan fruit freshness date, and can better keep longan fruit quality and mouthfeel.
Embodiment 2:
Adopting a preservation method for rear longan fruit, is for adopting rear longan fruit pulp autolysis, a set of fresh preservation method of gathering, select fruit, classification, cleaning, antistaling agent to soak, dry, pack, preserve that comprises of foundation.
Concrete steps are as follows:
(1) gather: the harvest maturity of longan fruit is ninety percent ripe, the 9:00 ~ 11:00 after fine day dew in morning is dry carries out fruit picking;
(2) choosing fruit, classification: the longan fruit after gathering is selected to fruit, classification, rejecting has the longan fruit of mechanical damage or disease and pest, selects the longan fruit of maturity consistent, big or small evenly (13 ~ 14 grams of single fruit weights), color and luster consistent (fruit appearance is light yellow);
(3) clean: the longan fruit after choosing fruit, classification is cleaned with mobile running water, to remove dust, dirt and the part microorganism on longan fruit surface;
(4) antistaling agent soaks: the vine polyphenol solution that the plant acid solution that is 0.05% by mass body volume concentrations and mass body volume concentrations are 0.3% by volume 3:1 mixes, and makes antistaling agent, then by antistaling agent immersion treatment 10 min for the longan fruit after cleaning;
(5) dry: the longan fruit after soaking is dried to processing, to remove the moisture on longan fruit surface;
(6) packing: longan fruit dries the thick polythene film bag modified-atmosphere package of rear use 0.015 mm, 50 of every packed fruits;
(7) storage: packaged longan fruit is at room temperature preserved.
' good fortune eye ' longan fruit after processing is preserved 8 d under the room temperature of 22 ℃ ~ 28 ℃
,longan pulp still flexible, have no obvious longan pulp self-dissolving, extended longan fruit freshness date, and can better keep longan fruit quality and mouthfeel.
Embodiment 3:
Adopting a preservation method for rear longan fruit, is for adopting rear longan fruit pulp autolysis, a set of fresh preservation method of gathering, select fruit, classification, cleaning, antistaling agent to soak, dry, pack, preserve that comprises of foundation.
Concrete steps are as follows:
(1) gather: the harvest maturity of longan fruit is ninety percent ripe, the 9:00 ~ 11:00 after fine day dew in morning is dry carries out fruit picking;
(2) choosing fruit, classification: the longan fruit after gathering is selected to fruit, classification, rejecting has the longan fruit of mechanical damage or disease and pest, selects the longan fruit of maturity consistent, big or small evenly (13 ~ 14 grams of single fruit weights), color and luster consistent (fruit appearance is light yellow);
(3) clean: the longan fruit after choosing fruit, classification is cleaned with mobile running water, to remove dust, dirt and the part microorganism on longan fruit surface;
(4) antistaling agent soaks: the vine polyphenol that the plant acid solution that the superoxide dismutase solution that is 0.05% by mass body volume concentrations, mass body volume concentrations are 0.03% and mass body volume concentrations are 0.3% 3:2:1 mixing by volume makes antistaling agent, then by antistaling agent immersion treatment 15 min for the longan fruit after cleaning;
(5) dry: the longan fruit after soaking is dried to processing, to remove the moisture on longan fruit surface;
(6) packing: longan fruit dries the thick polythene film bag modified-atmosphere package of rear use 0.015 mm, 50 of every packed fruits;
(7) storage: packaged longan fruit is at room temperature preserved.
' good fortune eye ' longan fruit after processing is preserved 10 d under the room temperature of 22 ℃ ~ 28 ℃
,longan pulp still flexible, have no obvious longan pulp self-dissolving, extended longan fruit freshness date, and can better keep longan fruit quality and mouthfeel.
Embodiment 4:
Adopting a preservation method for rear longan fruit, is for adopting rear longan fruit pulp autolysis, a set of fresh preservation method of gathering, select fruit, classification, cleaning, antistaling agent to soak, dry, pack, preserve that comprises of foundation.
Concrete steps are as follows:
(1) gather: the harvest maturity of longan fruit is medium well, the 9:00 ~ 11:00 after fine day dew in morning is dry carries out fruit picking;
(2) choosing fruit, classification: the longan fruit after gathering is selected to fruit, classification, rejecting has the longan fruit of mechanical damage or disease and pest, selects the longan fruit of maturity consistent, big or small evenly (12 ~ 13 grams of single fruit weights), color and luster consistent (fruit appearance is light yellow slightly green);
(3) clean: the longan fruit after choosing fruit, classification is cleaned with mobile running water, to remove dust, dirt and the part microorganism on longan fruit surface;
(4) antistaling agent soaks: the vine polyphenol that the plant acid solution that the ascorbic acid calcium solution that is 0.1% by mass body volume concentrations, mass body volume concentrations are 0.01% and mass body volume concentrations are 0.4% 2:3:1 mixing by volume makes antistaling agent, then by antistaling agent immersion treatment 13 min for the longan fruit after cleaning;
(5) dry: the longan fruit after soaking is dried to processing, to remove the moisture on longan fruit surface;
(6) packing: longan fruit dries the thick polythene film bag modified-atmosphere package of rear use 0.015 mm, 50 of every packed fruits; ;
(7) storage: packaged longan fruit is at room temperature preserved.
' good fortune eye ' longan fruit after processing is preserved 10 d under the room temperature of 22 ℃ ~ 28 ℃
,longan pulp still flexible, have no obvious longan pulp self-dissolving, extended longan fruit freshness date, and can better keep longan fruit quality and mouthfeel.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. a preservation method of adopting rear longan fruit, is characterized in that: for adopting rear longan fruit pulp autolysis, and a set of fresh preservation method of gathering, select fruit, classification, cleaning, antistaling agent to soak, dry, pack, preserve that comprises of foundation.
2. adopt according to claim 1 the preservation method of rear longan fruit, it is characterized in that: the food additives solution that described antistaling agent immersion is is 0.01% ~ 0.4% by mass body volume concentrations mixes, make antistaling agent, then use antistaling agent immersion treatment 10 min ~ 20 min.
3. adopt according to claim 2 the preservation method of rear longan fruit, it is characterized in that: described food additives are two or three in superoxide dismutase, Calcium Ascorbate, phytic acid, vine polyphenol.
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| CN107227233A (en) * | 2017-07-31 | 2017-10-03 | 广西驰胜农业科技有限公司 | A kind of lichee fruit wine brewing method of use microwave radiation |
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| CN108244232A (en) * | 2018-03-20 | 2018-07-06 | 大连民族大学 | A kind of fresh-cut fruit and vegetable coating antistaling agent containing chitosan oligosaccharide and Calcium Ascorbate |
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| CN106942350A (en) * | 2017-05-03 | 2017-07-14 | 福建农林大学 | It is a kind of to improve the preservation method for eating Blueberry hardness raw |
| CN107227227A (en) * | 2017-07-07 | 2017-10-03 | 广西驰胜农业科技有限公司 | A kind of preparation method of lichee fruit wine |
| CN107227228A (en) * | 2017-07-18 | 2017-10-03 | 广西驰胜农业科技有限公司 | A kind of use amino acid regulating and controlling fermentation, the lichee fruit wine preparation method of ageing |
| CN107227233A (en) * | 2017-07-31 | 2017-10-03 | 广西驰胜农业科技有限公司 | A kind of lichee fruit wine brewing method of use microwave radiation |
| CN107509799A (en) * | 2017-08-07 | 2017-12-26 | 福建农林大学 | A kind of prevention and controls of longan fruit disease |
| CN107509799B (en) * | 2017-08-07 | 2021-06-25 | 福建农林大学 | Prevention and control method for longan fruit diseases |
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| CN107821577A (en) * | 2017-11-03 | 2018-03-23 | 大新县科学技术情报研究所 | A kind of manufacture method of dried longan |
| CN107836512A (en) * | 2017-11-03 | 2018-03-27 | 大新县科学技术情报研究所 | A kind of extending longan shelf life pretreating process |
| CN108244232A (en) * | 2018-03-20 | 2018-07-06 | 大连民族大学 | A kind of fresh-cut fruit and vegetable coating antistaling agent containing chitosan oligosaccharide and Calcium Ascorbate |
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