CN109662141A - Vegetable preservative and preparation method and application thereof - Google Patents

Vegetable preservative and preparation method and application thereof Download PDF

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Publication number
CN109662141A
CN109662141A CN201910039110.1A CN201910039110A CN109662141A CN 109662141 A CN109662141 A CN 109662141A CN 201910039110 A CN201910039110 A CN 201910039110A CN 109662141 A CN109662141 A CN 109662141A
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CN
China
Prior art keywords
vegetable fresh
parts
agent keeping
keeping vegetable
vegetables
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Pending
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CN201910039110.1A
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Chinese (zh)
Inventor
熊乙帆
吉俊臣
李明元
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Xihua University
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Xihua University
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Priority to CN201910039110.1A priority Critical patent/CN109662141A/en
Publication of CN109662141A publication Critical patent/CN109662141A/en
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00Preservation or chemical ripening of fruit or vegetables
    • A23B7/16Coating with a protective layer; Compositions or apparatus therefor
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Storage Of Fruits Or Vegetables (AREA)

Abstract

The invention relates to the technical field of fruit and vegetable preservation, and discloses a vegetable preservative which comprises the following components in parts by weight: 15-20 parts of a sea buckthorn seed extracting solution, 4-7 parts of nisin, 10-20 parts of chitosan and 5-10 parts of an acetic acid solution. The invention also discloses a preparation method of the vegetable preservative, which comprises the steps of juicing the sea buckthorn seeds, filtering, removing residues to obtain a sea buckthorn seed extracting solution, and mixing the sea buckthorn seed extracting solution with other raw materials in proportion. The preparation method is simple, is suitable for large-scale production, and has wide sources of the main raw material seabuckthorn seeds and low production cost. The vegetable preservative has obvious preservation effect, can be widely applied to the preservation of vegetables, and is particularly suitable for the preservation of green vegetables.

Description

A kind of agent keeping vegetable fresh and its preparation method and application
Technical field
The present invention relates to postharvest technology of fruits and vegetables fields, and in particular to a kind of agent keeping vegetable fresh and its preparation method and application.
Background technique
The fresh-keeping and processing of agricultural product is the continuation of agricultural production, is " the two industries Ji " in the agriculture process of reproduction, hair Postpartum saving and processing is placed on up to country the top priority of agricultural, in addition to fresh-keeping and processing bring high added value, only reduced The loss of existing fruits and vegetables, so that it may nearly hundred billion yuan of benefit is brought for society.Currently, China's vegetables postharvest handling is backward in technique, It is high to adopt rear loss late, green vegetable adopts rear loss late and is even as high as 50% or more.Contain a large amount of organic acid, height in green vegetable The aromatic substances such as grade alcohol, alcohols, terpene substances and some sulfide are mostly unstable, are easy to during preservation and freshness It decomposes and volatilizees.These factors all significantly reduce the edible quality of vegetables.
Sea-buckthorn is a kind of Elaeangnaceae, Hippophne fallen leaves property shrub, and characteristic is drought-enduring, anti-blown sand, can be in salinization of soil It survives on soil, therefore is widely used in water and soil conservation.Northwest China largely plants sea-buckthorn, is used for desert afforestation.At present still The prior art that seabuckthorn seeds are applied to fresh-keeping of vegetables is not found.Existing vegetable fresh-keeping processing technology mostly use chemical preservative and Fungicide, formula is complicated, and there are a degree of safety concerns by consumer.Therefore, it is necessary to develop a kind of more pure natural vegetable Dish antistaling agent especially can be applied to the agent keeping vegetable fresh of green vegetable.
Summary of the invention
Present invention is primarily aimed at a kind of agent keeping vegetable fresh is provided, to overcome prior art agent keeping vegetable fresh ingredient multiple It is miscellaneous, not safe enough pure natural problem.
To achieve the goals above, the technical solution adopted by the present invention is that a kind of agent keeping vegetable fresh is provided, by mass fraction Meter includes: 15~20 parts of seabuckthorn seeds extracting solution, 4~7 parts of nisin, and 10~20 parts of chitosan, acetum 5~10 Part.
Further, the seabuckthorn seeds extracting solution is that seabuckthorn seeds are obtained after juicing and filtration treatment.
Further, the mass concentration of the acetum is 2%.
Further, the agent keeping vegetable fresh according to the mass fraction, including 20 parts of seabuckthorn seeds extracting solution, nisin 6 parts, 15 parts of chitosan, 5 parts of acetum.
The present invention also provides the preparation method of the agent keeping vegetable fresh, comprising the following steps:
Step 1: seabuckthorn seeds being put into juice extractor and are squeezed the juice, are stirred, juice is then filtered processing, remove residue, gained Filtrate is the seabuckthorn seeds extracting solution;
Step 2: the chitosan being added in the acetum, under 60 DEG C of water bath conditions then stirring surpasses to abundant swelling Sound degassing 5min, is cooled to 4 DEG C;The seabuckthorn seeds extracting solution, the nisin are mixed with the acetum again, 30min is stood after stirring, and the agent keeping vegetable fresh is made.
Further, the power of the ultrasonic degassing is 1500W.
The present invention also provides the applications of the agent keeping vegetable fresh, comprising the following steps:
Step 1: attachment and remains of pesticide that fresh-keeping vegetables wash away surface with clear water will be carried out, then rinse 2 with clean water ~3 times, it is put into 4 DEG C of refrigerating chamber chilling treatments;
Step 2: the agent keeping vegetable fresh being cooled to 4 DEG C, brushes or be sprayed on the surface of the vegetables;
Step 3: the vegetables for being coated with agent keeping vegetable fresh, which are put into gnotobasis, drains 30min, then covers PE with plastic casing Film packaging, is placed in 4 ± 1 DEG C of environment and refrigerates.
Further, the mass ratio of the vegetables and the seabuckthorn seeds extracting solution is 100:10~20.
Further, the vegetables are pakchoi, spinach, romaine lettuce, water spinach.
Further, the coating includes at least one of dipping, brushing, spraying, spin coating.
The beneficial effects of the present invention are: (1) agent keeping vegetable fresh use seabuckthorn seeds for primary raw material directly squeeze the juice mentioned Liquid is taken, comparison of ingredients is natural, and it is highly-safe, and raw material sources are extensive, and formula is simple, and cost is more cheap.(2) fresh-keeping of vegetables Agent fresh-keeping effect is obvious, and the sensory evaluation scores of the vegetables of agent keeping vegetable fresh of the present invention has been used to be significantly higher than untreated vegetables.(3) Vitamin C content is high in sea buckthorn fruit, is known as the laudatory title of the king of vitamin C.Sea buckthorn fruit is used as medicine to disappear with relieving cough and reducing sputum, stomach invigorating The effect of food, promoting blood circulation to remove blood stasis.Modern medicine study, sea-buckthorn can reduce cholesterol, and allevating angina pectoris breaking-out also prevents and treats coronal dynamic The cardiopathic effect of pulse atherosclerosis, is applied in fresh-keeping of vegetables, not only plays good preservation to vegetables, Also improve the added value of product of vegetables.
Detailed description of the invention
Fig. 1 is the sensory evaluation of the fresh-keeping effect of different amounts agent keeping vegetable fresh;
Fig. 2 is that different amounts agent keeping vegetable fresh influences vegetables shearing force.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this Invention is described in further detail.
Agent keeping vegetable fresh of the present invention includes: 15~20 parts of seabuckthorn seeds extracting solution, nisin 4 according to the mass fraction ~7 parts, 10~20 parts of chitosan, 5~10 parts of acetum.Wherein, seabuckthorn seeds extracting solution be seabuckthorn seeds squeezed the juice and filtering at Obtained after reason, the mass concentration of acetum is 2%.
The present invention is further explained with reference to embodiments, number as described below is mass fraction.
Embodiment 1
Seabuckthorn seeds are put into juice extractor and are squeezed the juice, are stirred, juice is then filtered processing, remove residue, gained filtrate is For the seabuckthorn seeds extracting solution.15 parts of chitosans are added in 5 part of 2% acetum, are stirred under 60 DEG C of water bath conditions to sufficiently molten Swollen, then 1500W power ultrasonic degassing 5min, is cooled to 4 DEG C.Again by 20 seabuckthorn seeds extracting solutions, 6 parts of nisins and mixed It closes object further to mix, stands 30min after mixing evenly, the agent keeping vegetable fresh is made.
Fresh pakchoi 1kg is taken, the attachment and remains of pesticide on surface are washed away with clear water, then rinsed 3 times with clean water. It weighs the ready agent keeping vegetable fresh of 0.015kg and is cooled to 4 DEG C, stir evenly, then dip film liquid with Clean Brush for cleaning, slowly It is applied to vegetables surfaces externally and internally evenly.Vegetables after film are put into desinfection chamber and drain 30min naturally, are then covered with plastic casing PE film packaging, is placed in 4 ± 1 DEG C of refrigerating chambers, fresh-keeping completion.
Embodiment 2
Seabuckthorn seeds are put into juice extractor and are squeezed the juice, are stirred, juice is then filtered processing, remove residue, gained filtrate is For the seabuckthorn seeds extracting solution.10 parts of chitosans are added in 5 part of 2% acetum, are stirred under 60 DEG C of water bath conditions to sufficiently molten Swollen, then 1500W power ultrasonic degassing 5min, is cooled to 4 DEG C.Again by 15 seabuckthorn seeds extracting solutions, 4 parts of nisins and mixed It closes object further to mix, stands 30min after mixing evenly, the agent keeping vegetable fresh is made.
Embodiment 3
Seabuckthorn seeds are put into juice extractor and are squeezed the juice, are stirred, juice is then filtered processing, remove residue, gained filtrate is For the seabuckthorn seeds extracting solution.16 parts of chitosans are added in 6 part of 2% acetum, are stirred under 60 DEG C of water bath conditions to sufficiently molten Swollen, then 1500W power ultrasonic degassing 5min, is cooled to 4 DEG C.Again by 18 seabuckthorn seeds extracting solutions, 5 parts of nisins and mixed It closes object further to mix, stands 30min after mixing evenly, the agent keeping vegetable fresh is made.
Embodiment 4: fresh-keeping effect test
1. selection freshness and the consistent pakchoi of maturity are divided into 6 groups, every group 1 kilogram.First group is blank control, is not appointed Where reason;Second to the 6th group, it is made that 0.005kg, 0.01kg, 0.015kg, 0.02kg, 0.025kg embodiment 1 is respectively coated Standby agent keeping vegetable fresh.
2. test method
Subjective appreciation method: in the 0th d, 1 d, 3 d, 6 d, 9 d, 12 d, observing vegetables by 5 valuation officers, leads to It crosses four color, smell, structural state, retention ability aspects and sensory evaluation scores is carried out to it, be averaged.
Vegetable leaf: being trimmed to the sheet of 20mm × 20mm by tender assay method, then places it in the knife of tender degree device On slot, keep plant fiber vertical with edge of a knife trend, starts instrument, measure the maximum shear force value in cutter cutting process, and remember Record determination data, unit N.
3. test result
As depicted in figs. 1 and 2, with the extension of storage time, the sensory evaluation scores of 6 groups of samples are gradually decreased.Work as storage time After reaching 12 days, the sensory evaluation scores of each group are below 6 points.By data analysis it is found that different vegetable antistaling agent dosage is to vegetables Sensory evaluation scores influence extremely significant (p < 0.01), i.e. the addition of agent keeping vegetable fresh can make the sensory evaluation scores of processing group vegetables significant Better than control group.The sensory evaluation scores that agent keeping vegetable fresh dosage is 0.15% group are in storage period always above other processing groups.By Multiple range test learns, 0.05% group is extremely significant (p < 0.01) with 0.15% group of difference, 0.05% and 0.20%, 0.15% and 0.25% liang of group difference is significant (p < 0.05), and agent keeping vegetable fresh dosage is between three groups of 0.1%, 0.15%, 0.2% It is without significant difference (p > 0.05), i.e., consistent to the sensory evaluation scores function and effect of vegetables.
Compared with the control group, different vegetable antistaling agent dosage influences extremely significant (p < 0.01) to the shearing force of vegetables.And work as It stores the 12nd day, when agent keeping vegetable fresh dosage is 0.25%, shearing force has been higher by 12.743 N than control group.Multiple range test obtains Out, 0.05%GSE and 0.25% processing group difference it is extremely significant (p < 0.01), 0.1% group with 0.25% group, 0.05% with 0.20% group difference is significant (p < 0.05), three processing group function and effect that agent keeping vegetable fresh dosage is 0.15%, 2%, 2.5% Unanimously (p > 0.05).
Above-described embodiment is only preferred embodiment, the protection scope being not intended to limit the invention, in spirit of the invention With any modifications, equivalent replacements, and improvements made within principle etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of agent keeping vegetable fresh, which is characterized in that the agent keeping vegetable fresh includes: seabuckthorn seeds extracting solution 15 according to the mass fraction ~20 parts, 4~7 parts of nisin, 10~20 parts of chitosan, 5~10 parts of acetum.
2. agent keeping vegetable fresh as described in claim 1, which is characterized in that the seabuckthorn seeds extracting solution be seabuckthorn seeds through juicing and It is obtained after filtration treatment.
3. agent keeping vegetable fresh as claimed in claim 2, which is characterized in that the mass concentration of the acetum is 2%.
4. agent keeping vegetable fresh as claimed in claim 3, which is characterized in that the agent keeping vegetable fresh according to the mass fraction, including 20 parts of seabuckthorn seeds extracting solution, 6 parts of nisin, 15 parts of chitosan, 5 parts of acetum.
5. the preparation method of the agent keeping vegetable fresh as described in Claims 1-4, which comprises the following steps:
Step 1: seabuckthorn seeds being put into juice extractor and are squeezed the juice, are stirred, juice is then filtered processing, remove residue, gained Filtrate is the seabuckthorn seeds extracting solution;
Step 2: the chitosan being added in the acetum, under 60 DEG C of water bath conditions then stirring surpasses to abundant swelling Sound degassing 5min, is cooled to 4 DEG C;The seabuckthorn seeds extracting solution, the nisin are mixed with the acetum again, 30min is stood after stirring, and the agent keeping vegetable fresh is made.
6. the preparation method of agent keeping vegetable fresh as claimed in claim 5, which is characterized in that the power of the ultrasonic degassing is 1500W。
7. the application of the agent keeping vegetable fresh as described in Claims 1-4, which comprises the following steps:
Step 1: attachment and remains of pesticide that fresh-keeping vegetables wash away surface with clear water will be carried out, then rinse 2 with clean water ~3 times, it is put into 4 DEG C of refrigerating chamber chilling treatments;
Step 2: the agent keeping vegetable fresh being cooled to 4 DEG C, brushes or be sprayed on the surface of the vegetables;
Step 3: the vegetables for being coated with agent keeping vegetable fresh, which are put into gnotobasis, drains 30min, then covers PE with plastic casing Film packaging, is placed in 4 ± 1 DEG C of environment and refrigerates.
8. the application of agent keeping vegetable fresh as claimed in claim 7, which is characterized in that the vegetables and the seabuckthorn seeds extracting solution Mass ratio be 1000:10~20.
9. the application of agent keeping vegetable fresh as claimed in claim 7, which is characterized in that the vegetables are pakchoi, spinach, life Dish, water spinach.
10. the application of agent keeping vegetable fresh as claimed in claim 7, which is characterized in that the coating includes dipping, brushes, spray At least one of painting, spin coating.
CN201910039110.1A 2019-01-16 2019-01-16 Vegetable preservative and preparation method and application thereof Pending CN109662141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910039110.1A CN109662141A (en) 2019-01-16 2019-01-16 Vegetable preservative and preparation method and application thereof

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110156884A (en) * 2019-05-22 2019-08-23 天津科技大学 A kind of application recombinating Mytichitin-CB antibacterial peptide
CN111066878A (en) * 2020-01-05 2020-04-28 江苏经贸职业技术学院 Natural fruit and vegetable preservative and preparation process thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103478236A (en) * 2013-09-26 2014-01-01 上海海洋大学 Fruit and vegetable antistaling agent and preparation method thereof
CN103843882A (en) * 2014-03-14 2014-06-11 山东鲁商物流科技有限公司 Edible fruit and vegetable film coating agent and preparation method thereof
CN107242292A (en) * 2017-06-28 2017-10-13 湖北师范大学 A kind of preservation method of fresh-cut lotus root

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103478236A (en) * 2013-09-26 2014-01-01 上海海洋大学 Fruit and vegetable antistaling agent and preparation method thereof
CN103843882A (en) * 2014-03-14 2014-06-11 山东鲁商物流科技有限公司 Edible fruit and vegetable film coating agent and preparation method thereof
CN107242292A (en) * 2017-06-28 2017-10-13 湖北师范大学 A kind of preservation method of fresh-cut lotus root

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
P. S. NEGI等: "不同沙棘籽提取物的抗氧化和抗菌活性研究", 《国际沙棘研究与开发》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110156884A (en) * 2019-05-22 2019-08-23 天津科技大学 A kind of application recombinating Mytichitin-CB antibacterial peptide
CN111066878A (en) * 2020-01-05 2020-04-28 江苏经贸职业技术学院 Natural fruit and vegetable preservative and preparation process thereof

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Application publication date: 20190423