CN109548855A - A kind of preparation method of the complex biological preservative of the extract containing pitaya peel - Google Patents

A kind of preparation method of the complex biological preservative of the extract containing pitaya peel Download PDF

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Publication number
CN109548855A
CN109548855A CN201910050768.2A CN201910050768A CN109548855A CN 109548855 A CN109548855 A CN 109548855A CN 201910050768 A CN201910050768 A CN 201910050768A CN 109548855 A CN109548855 A CN 109548855A
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CN
China
Prior art keywords
pitaya peel
complex biological
biological preservative
salmon skin
extract
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910050768.2A
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Chinese (zh)
Inventor
谢晶
刘文茹
沈勇
梅俊
朱振宏
王金锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Maritime University
Shanghai Ocean University
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Shanghai Maritime University
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Priority to CN201910050768.2A priority Critical patent/CN109548855A/en
Publication of CN109548855A publication Critical patent/CN109548855A/en
Pending legal-status Critical Current

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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
    • A23B4/00General methods for preserving meat, sausages, fish or fish products
    • A23B4/14Preserving with chemicals not covered by groups A23B4/02 or A23B4/12
    • A23B4/18Preserving with chemicals not covered by groups A23B4/02 or A23B4/12 in the form of liquids or solids
    • A23B4/20Organic compounds; Microorganisms; Enzymes
    • 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

Abstract

A kind of preparation method of the complex biological preservative of the extract containing pitaya peel, antistaling agent include salmon skin gelatin, red heart pitaya peel extract and epsilon-polylysine.Salmon skin gelatin is extracted using the salmon skin frozen at -20 DEG C, pitaya peel extract is extracted using red heart pitaya peel, every 100ml ultrapure water dissolution 1.2g salmon skin gelatin and 0.1g epsilon-polylysine form solution, then 2%~3% pitaya peel extract is added, and obtains complex biological preservative with magnetic stirrer 90min at normal temperature.Complex biological preservative of the invention has good fresh-keeping effect, and raw material is natural, has no toxic side effect, and can effectively delay the increase of total plate count and Volatile Base Nitrogen, and then extend the freshness date of peeled shrimp.

Description

A kind of preparation method of the complex biological preservative of the extract containing pitaya peel
Technical field
The present invention relates to technical field of aquatic product preservation, and in particular to a kind of red heart pitaya peel extract compound bio guarantor Fresh dose.
Background technique
Pitaya peel is often discarded as the by-product that pulp is processed, and is developed and used, is turned waste into wealth to it, both may be used Resource utilization is improved, dragon fruit added value can be improved again conducive to environmental protection.Nutriment is abundant in pitaya peel in fact, not only rich Containing a variety of organic acids, protein, also containing functional components such as the rare pigment of general plant, polyphenol, and pitaya peel is more Phenol has resistance of wide spectrum to microorganism, shows good bacteriostasis.So pitaya peel has very in preservation of fishery Big potentiality.
Cray protein content is high, and fat content is low, soft, easy to digest.It is edible that it is that one kind is very suitable to the mankind Food.In recent years, cray has become the important economic kind of China.But cray water activity is high, and full of nutrition, itself takes It is easily putrid and deteriorated with a large amount of microorganism.In recent years, some with Nantural non-toxic, the water made of the compound of extract Product preservation technology gradually causes the concern of people, and starts processing, storage, transport and the process of consumption applied to aquatic products In.
Therefore, the invention proposes a kind of preparation of red heart pitaya peel extract complex biological preservative and its users Method.
Summary of the invention
The purpose of the present invention is to provide using the by-product pitaya peel processed as pulp, a kind of red heart flue is prepared The method of pericarp extract complex biological preservative.
The present invention is short for peeled shrimp fresh keeping time and causes easily putrid and deteriorated and influences edible problem, provides a kind of red heart Pitaya peel extract complex biological preservative, extends the shelf-life of peeled shrimp.
The technical solution of the present invention is as follows: antistaling agent is by salmon skin gelatin, red heart pitaya peel extract, epsilon-polylysine It is compound to be made;Antistaling agent is made by following steps: (1) prepared by salmon skin gelatin powder: taking three texts frozen at -20 DEG C Fish-skin, thaw 20h under 4 DEG C of refrigerated conditions, then is cleaned with water, is shredded after cleaning again with 0.2Mol NaoH solution 4 DEG C 1h is impregnated, solid-liquid ratio is 1:6 when immersion;It is rinsed with water to neutrality, then impregnates 1h with 0.05N acetum, feed liquid when immersion Than for 1:6;It is rinsed with water later to neutrality, then the salmon skin shredded is extracted into 3h under 60 DEG C of hot water, solid-liquid ratio when extraction It for 1:6, is filtered after extraction with double gauze, filtrate is concentrated by evaporation with Rotary Evaporators;Concentrate is finally placed in -80 DEG C Refrigerator kind prefreezing 10 minutes, then be placed in 10 DEG C of freeze dryers and be lyophilized 48 hours, obtain salmon skin gelatin;Salmon skin is bright Glue grind into powder, for use;
(2) prepared by pitaya peel extract: red heart dragon fruit pericarp is extracted with 80% methanol, solid-liquid ratio is 4 when extraction: 1, extraction temperature is 40 DEG C, extraction time 90min, extracts series 2;Extracting solution is filtered with whatmann1 filter paper, filters it Concentrate is finally being placed in -80 DEG C of refrigerator kind prefreezings 10 minutes, then is being placed in 10 DEG C of freeze dryers and is lyophilized 48 by concentrated by rotary evaporation afterwards Hour, pitaya peel extract is obtained, for use;
(3) every 100ml ultrapure water dissolution 1.2g salmon skin gelatin and 0.1g epsilon-polylysine form solution, then add 2% ~3% pitaya peel extract, and magnetic stirrer 90min is being used at normal temperature, obtain complex biological preservative.
The present invention is short for peeled shrimp fresh keeping time and causes easily putrid and deteriorated and influences edible problem, provides a kind of red heart Pitaya peel extract complex biological preservative extends the shelf-life of peeled shrimp, and the technical solution of used application is as follows:
New fresh shrimp is taken, is put into red heart pitaya peel extract Multiple preservative solutions and impregnates 30s.It pulls out and drains, be packed into sterile appearance It is sealed in device, is finally placed under 4 DEG C of environment and refrigerates.
The present invention prepares the fresh-keeping liquid for preservation of fishery by raw material of pitaya peel, is pure natural fresh-keeping liquid, It is nontoxic without influence and preferable to the fresh-keeping effect of aquatic products on human health, effectively delay total plate count and volatility alkali The increase of nitrogen, and then the freshness date for extending peeled shrimp can also carry out pitaya peel on the basis of promoting aquatic products commodity value Deep development utilizes, so that the application for further exploitation pitaya peel in preservation of fishery field provides theoretical foundation.
Detailed description of the invention
Fig. 1 is embodiment 3, total plate count of the sample in storage changes in embodiment 4, comparative example 5.
Fig. 2 is embodiment 3, Volatile Base Nitrogen (TVB-N) of the sample in storage becomes in embodiment 4, comparative example 5 Change.
Specific embodiment
In order to preferably disclose the present invention, explanation is further explained to the present invention combined with specific embodiments below.
Embodiment 1
A kind of red heart pitaya peel extract complex biological preservative is mainly extracted by salmon skin gelatin, red heart pitaya peel Object, epsilon-polylysine are made.
A kind of complex biological preservative of the extract containing pitaya peel is made by following steps: (1) salmon skin gelatin Powder preparation: taking the salmon skin frozen at -20 DEG C, and thaw 20h under 4 DEG C of refrigerated conditions, then is cleaned with water, cleans Shredding later and using 0.2Mol NaoH solution solid-liquid ratio in 4 DEG C of immersion 1h, immersion again is 1:6;It is rinsed with water to neutrality, then uses 0.05N acetum impregnates 1h, and solid-liquid ratio is 1:6 when immersion;It is rinsed with water later to neutrality, then the salmon skin shredded is existed Extract 3h under 60 DEG C of hot water, solid-liquid ratio is 1:6 when extraction, is filtered after extraction with double gauze, by filtrate Rotary Evaporators It is concentrated by evaporation;Concentrate is finally placed in -80 DEG C of refrigerator kind prefreezings 10 minutes, then to be placed in 10 DEG C of freeze dryers freeze-drying 48 small When, obtain salmon skin gelatin;By salmon skin gelatin grind into powder, for use;
(2) prepared by pitaya peel extract: red heart dragon fruit pericarp is extracted with 80% methanol, solid-liquid ratio is 4 when extraction: 1, extraction temperature is 40 DEG C, extraction time 90min, extracts series 2;Extracting solution is filtered with whatmann1 filter paper, filters it Concentrate is finally being placed in -80 DEG C of refrigerator kind prefreezings 10 minutes, then is being placed in 10 DEG C of freeze dryers and is lyophilized 48 by concentrated by rotary evaporation afterwards Hour, pitaya peel extract is obtained, for use;
(3) every 100ml ultrapure water dissolution 1.2g salmon skin gelatin and 0.1g epsilon-polylysine form solution, then add 2% Pitaya peel extract, and magnetic stirrer 90min is being used at normal temperature, obtain complex biological preservative.
Embodiment 2
A kind of red heart pitaya peel extract complex biological preservative is mainly extracted by salmon skin gelatin, red heart pitaya peel Object, epsilon-polylysine are made.
A kind of complex biological preservative of the extract containing pitaya peel is made by following steps: (1) salmon skin gelatin Powder preparation: taking the salmon skin frozen at -20 DEG C, and thaw 20h under 4 DEG C of refrigerated conditions, then is cleaned with water, cleans Shredding later and using 0.2Mol NaoH solution solid-liquid ratio in 4 DEG C of immersion 1h, immersion again is 1:6;It is rinsed with water to neutrality, then uses 0.05N acetum impregnates 1h, and solid-liquid ratio is 1:6 when immersion;It is rinsed with water later to neutrality, then the salmon skin shredded is existed Extract 3h under 60 DEG C of hot water, solid-liquid ratio is 1:6 when extraction, is filtered after extraction with double gauze, by filtrate Rotary Evaporators It is concentrated by evaporation;Concentrate is finally placed in -80 DEG C of refrigerator kind prefreezings 10 minutes, then to be placed in 10 DEG C of freeze dryers freeze-drying 48 small When, obtain salmon skin gelatin;By salmon skin gelatin grind into powder, for use;
(2) prepared by pitaya peel extract: red heart dragon fruit pericarp is extracted with 80% methanol, solid-liquid ratio is 4 when extraction: 1, extraction temperature is 40 DEG C, extraction time 90min, extracts series 2;Extracting solution is filtered with whatmann1 filter paper, filters it Concentrate is finally being placed in -80 DEG C of refrigerator kind prefreezings 10 minutes, then is being placed in 10 DEG C of freeze dryers and is lyophilized 48 by concentrated by rotary evaporation afterwards Hour, pitaya peel extract is obtained, for use;
(3) every 100ml ultrapure water dissolution 1.2g salmon skin gelatin and 0.1g epsilon-polylysine form solution, then add 3% Pitaya peel extract, and magnetic stirrer 90min is being used at normal temperature, obtain complex biological preservative.
Embodiment 3
The application method of complex biological preservative is carried out according to the following steps: taking new fresh shrimp, is put into and extracts containing 2% dragon fruit 30s is impregnated in the red heart pitaya peel extract complex biological preservative of object.It pulls out and drains, be fitted into sterile chamber and seal, most It is placed under 4 DEG C of environment and refrigerates.
Embodiment 4
The application method of complex biological preservative is carried out according to the following steps: taking new fresh shrimp, is put into and extracts containing 3% dragon fruit 30s is impregnated in the red heart pitaya peel extract complex biological preservative of object.It pulls out and drains, be fitted into sterile chamber and seal, most It is placed under 4 DEG C of environment and refrigerates.
5 comparative example of embodiment
New fresh shrimp is taken, is put into ultrapure water and impregnates 30s.It pulls out and drains, be fitted into sterile chamber and seal, be finally placed in 4 DEG C of rings It is refrigerated under border.
By attached drawing 1,2 it is found that a kind of red heart pitaya peel extract complex biological preservative can effectively delay bacterium Fall the increase of sum and Volatile Base Nitrogen.The edible upper limit of total plate count is 7log CFU/g in aquatic products, low initial Total plate count (5.28 ± 0.21 log CFU/g) show that peeled shrimp possesses relatively good quality;It is right by the 4th day of storage Ratio 5 increases to 7.88 ± 0.29CFU/g, and embodiment 3 and embodiment 4 are still below 7log10CFU/g;Two days later, real The total plate count for applying example 3 and embodiment 4 has also exceeded 7 log10 CFU/g.The edible upper limit of TVB-N is in aquatic products 30mg / 100g.It is 4.58mg/100g in the TVB-N value of the 0th day shrimp;By the 6th day of Storage period, the TVB-N of comparative example 5 Value reaches inedible level (31.13mg/100g);Reach inedible water in the 8th day embodiment 3 and embodiment 4 It is flat.Pitaya peel extract has certain antibacterial activity and effectively delays the increase of TVB-N, and then extends the fresh-keeping of peeled shrimp Phase.
The beneficial effects of the present invention are: being formed using salmon skin, red heart pitaya peel and epsilon-polylysine, have good Fresh-keeping effect, raw material is natural, has no toxic side effect, and effectively delays the increase of total plate count and Volatile Base Nitrogen, and then extend The freshness date of peeled shrimp.
The above described is only a preferred embodiment of the present invention, being not the limit for making any other form to the present invention System, and made any modification or equivalent variations according to the technical essence of the invention, still fall within present invention model claimed It encloses.

Claims (3)

1. a kind of preparation method of the complex biological preservative of extract containing pitaya peel, which is characterized in that antistaling agent is by three texts Fishskin gelatin, red heart pitaya peel extract, epsilon-polylysine are compound to be made;Antistaling agent is made by following steps: (1) three text The preparation of fishskin gelatin powder: the salmon skin frozen at -20 DEG C is taken, thaw 20h under 4 DEG C of refrigerated conditions, then is carried out with water Cleaning, shredding after cleaning and using 0.2Mol NaoH solution solid-liquid ratio in 4 DEG C of immersion 1h, immersion again is 1:6;Be rinsed with water to Neutrality, then 1h is impregnated with 0.05N acetum, solid-liquid ratio is 1:6 when immersion;It is rinsed with water to neutrality, then will shred later Salmon skin extracts 3h under 60 DEG C of hot water, and solid-liquid ratio is 1:6 when extraction, is filtered after extraction with double gauze, filtrate is used Rotary Evaporators are concentrated by evaporation;Concentrate is finally placed in -80 DEG C of refrigerator kind prefreezings 10 minutes, then is placed in 10 DEG C of freeze dryers Freeze-drying 48 hours, obtains salmon skin gelatin;By salmon skin gelatin grind into powder, for use;
(2) prepared by pitaya peel extract: red heart dragon fruit pericarp is extracted with 80% methanol, solid-liquid ratio is 4 when extraction: 1, extraction temperature is 40 DEG C, extraction time 90min, extracts series 2;Extracting solution is filtered with whatmann1 filter paper, filters it Concentrate is finally being placed in -80 DEG C of refrigerator kind prefreezings 10 minutes, then is being placed in 10 DEG C of freeze dryers and is lyophilized 48 by concentrated by rotary evaporation afterwards Hour, pitaya peel extract is obtained, for use;
(3) every 100ml ultrapure water dissolution 1.2g salmon skin gelatin and 0.1g epsilon-polylysine form solution, then add 2% ~3% pitaya peel extract, and magnetic stirrer 90min is being used at normal temperature, obtain complex biological preservative.
2. a kind of preparation method of the complex biological preservative of extract containing pitaya peel, which is characterized in that the compound bio The content of red heart pitaya peel extract is 3% in antistaling agent.
3. a kind of preparation method of the complex biological preservative of extract containing pitaya peel, which is characterized in that the compound bio The fresh-keeping object of antistaling agent is shrimps.
CN201910050768.2A 2019-01-20 2019-01-20 A kind of preparation method of the complex biological preservative of the extract containing pitaya peel Pending CN109548855A (en)

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Application publication date: 20190402