CN110063365A - A kind of processing method controlling the brown stain of fresh-cut taro - Google Patents

A kind of processing method controlling the brown stain of fresh-cut taro Download PDF

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Publication number
CN110063365A
CN110063365A CN201910446884.6A CN201910446884A CN110063365A CN 110063365 A CN110063365 A CN 110063365A CN 201910446884 A CN201910446884 A CN 201910446884A CN 110063365 A CN110063365 A CN 110063365A
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China
Prior art keywords
taro
fresh
cut
brown stain
processing method
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Pending
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CN201910446884.6A
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Chinese (zh)
Inventor
王斌
何金明
肖艳辉
袁晓
谢景
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Shaoguan University
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Shaoguan University
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Priority to CN201910446884.6A priority Critical patent/CN110063365A/en
Publication of CN110063365A publication Critical patent/CN110063365A/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
    • A23B7/14Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
    • A23B7/153Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
    • A23B7/154Organic compounds; Microorganisms; Enzymes
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L5/00Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
    • A23L5/40Colouring or decolouring of foods
    • A23L5/41Retaining or modifying natural colour by use of additives, e.g. optical brighteners
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Food Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Storage Of Fruits Or Vegetables (AREA)

Abstract

A kind of processing method controlling the brown stain of fresh-cut taro, operating procedure is as follows: after taro removes the peel double of cutting, with 60~100 DEG C hot water blanching 20~60 seconds, pull out and drain.Then lemongrass hydrosol spraying is drained away the water on fresh-cut taro surface, is stored in after being packed with 0.01 millimeter of sealed polyethylene plastic in 4~8 DEG C of insulating boxs.The present invention does not use chemical anti-enzymatic regent, safe and efficient, the freshness date that at least can extend 9 days;And operation is simple, will not dramatically increase production cost, has significant economic benefit.

Description

A kind of processing method controlling the brown stain of fresh-cut taro
Technical field
The present invention relates to fresh-cut fruit and vegetable technical field of preservation of fresh, especially a kind of processing method for controlling the brown stain of fresh-cut taro.
Background technique
Taro, nickname taro, glycan, taro, hair taro, taro ghost, crouching sparrow hawk etc., are Araeceae chief's taro platymisciums, eat portion Dividing is underground meat bulb.Dasheen nutrient is abundant, has the laudatory title of " native sesame ", but taro head is larger, single taro can weigh 3.5kg, ordinary family are difficult to a meal and eat up.In addition, sepia squamaceous fur thorn is distributed on taro epidermis, in cleaning and It can cause hand skin itch when cutting, put to no little inconvenience to average family is edible.Therefore, taro is particularly suitable for fresh-cut pin It sells, to facilitate average family fast to eat.But taro makes tissue come to harm in the process such as peeling, cutting, fresh-cut Brown stain occurs quickly afterwards.The fresh-cut taro of brown stain can only lose, and strongly limit the fresh-cut sale of taro, also result in very big economy Loss.Therefore, how efficiently and safely to control the brown stain of fresh-cut taro is urgent problem.
Currently, the method that many scholars have studied control fresh-cut taro brown stain, for example use ascorbic acid, lactobionic acid, 1- MCP, sodium dithionite, citric acid treatment fresh-cut taro, can control fresh-cut taro brown stain to a certain degree.But these methods are equal Brown stain is controlled using chemical addition agent, and chemical preservative easily causes residual, is also easy to produce new food-safety problem.Moreover, Production cost can be also dramatically increased using chemical preservative, is unfavorable for the production and sales of fresh-cut taro.
Summary of the invention
The purpose of the invention is to overcome the shortcomings of that food-safety problem easily occurs in chemical preservative, highly effective and safe is provided A kind of control fresh-cut taro brown stain processing method.
The technical solution adopted by the present invention to solve the technical problems is: a kind of processing side controlling the brown stain of fresh-cut taro Method, operating procedure are as follows:
(1) choosing the taro without machinery wound, no disease and pests harm is to process raw material, and is washed with water after removing surface silt with stainless Steel cutter peeling;
(2) taro after peeling is half-and-half cut into the taro piece of 1 cm thick;
(3) the taro piece after cutting is drained away the water after pulling out blanching 20~60 seconds in 60~100 DEG C of hot water;
(4) fresh-cut taro is handled with lemongrass hydrosol spraying, drains taro surface moisture;
(5) it is packed, is housed in 4~8 DEG C of insulating boxs using 0.01 millimeter of sealed polyethylene plastic.
As a further improvement of the present invention: lemongrass hydrosol is stoste in the step (4), does not make any dilution processing.
As a further improvement of the present invention: the lemongrass hydrosol the preparation method is as follows: the fresh lemon-grass of acquisition, will It is cut into 10 centimetre lengths, is put into distilling apparatus, and water is added in the ratio of solid-liquid ratio 1:2, starts to distill, collects distillation 2 hours Interior distillate, two layers of distillate point, lowest level distillate is lemongrass hydrosol.
As a further improvement of the present invention: distilled water or pure water can be selected in tap water in the step (1).
As a further improvement of the present invention: the vapo(u)rizing temperature of the distillation is 120 DEG C, and the return time of the distillation is 5min。
As a further improvement of the present invention: taro piece being handled using heat treating process in the step (3), heat treatment is a kind of Physical fresh-keeping method, it is highly-safe.Short time high temperature heat treatment can be passivated the activity with brown stain in relation to enzyme, to inhibit fresh-cut taro Head brown stain, only need to by blanching 20~60 seconds in the hot water of the taro after cutting, again in surface spraying lemongrass hydrosol after draining away the water, Processing method is simple, and the requirement being heat-treated to equipment is very low, only needs a heating device.
As a further improvement of the present invention: lemongrass hydrosol spraying fresh-cut taro is used in the step (4), lemon-grass is A kind of multipurpose fragrant plant integrating edible, medicinal etc..Lemongrass hydrosol is the extract of lemon-grass, is widely used in production High-grade skin care item, spice, air freshener etc., ingredient is natural, is acknowledged as safe.Lemongrass hydrosol also has antibacterial kill Bacterium effect, can inhibit the growth and breeding of fresh-cut taro surface pathogenic bacteria during refrigeration, reach antisepsis;Lemongrass hydrosol itself has There is stronger antibacterial and oxidation resistance, be easy to save, can be reserved for 6 months or so in room temperature, can be kept at 4 DEG C 1 year or more.This Outside, lemongrass hydrosol is the byproduct generated during extracting oil of Cymbopogon winterianus, and only very least a portion of hydrosol is by resource utilization, absolutely Major part is taken as waste, and hydrosol is fresh-keeping applied to fresh-cut fruit and vegetable, can make its resource utilization, can not only obtain higher Economic benefit also helps protection environment, generates preferable social benefit.
Compared with prior art, the beneficial effects of the present invention are:
(1) fresh-keeping effect of the invention to fresh-cut taro clearly, can extend the freshness date of fresh-cut taro, improve economical Benefit.
Fresh-cut taro processed by the invention is also able to maintain good exterior quality when storing 15 days for 4 DEG C, and common cold Only 3 days or so the freshness dates in hiding.The present invention can be at least 9 days freshness date;
(2) present invention does not use chemical anti-enzymatic regent, highly-safe, not will cause chemical preservative residual;
(3) operation is simple for the method for the present invention, and the requirement to equipment is low, will not dramatically increase production cost;
(4) present invention can make byproduct resource utilization, reduce the pollution to environment, have apparent social benefit;
Specific embodiment
Now in conjunction with embodiment, the present invention is further described:
A kind of processing method controlling the brown stain of fresh-cut taro, operating procedure are as follows:
(1) choosing the taro without machinery wound, no disease and pests harm is to process raw material, and is washed with water after removing surface silt with stainless Steel cutter peeling;
(2) taro after peeling is half-and-half cut into the taro piece of 1 cm thick;
(3) the taro piece after cutting is drained away the water after pulling out blanching 20~60 seconds in 60~100 DEG C of hot water;
(4) fresh-cut taro is handled with lemongrass hydrosol spraying, drains taro surface moisture;
(5) it is packed, is housed in 4~8 DEG C of insulating boxs using 0.01 millimeter of sealed polyethylene plastic.
The lemongrass lemongrass hydrosol the preparation method is as follows:
Fresh lemon-grass is acquired, 10 centimetre lengths is cut into, is put into distilling apparatus, is added in the ratio of solid-liquid ratio 1:2 Enter water, start to distill, collects the distillate in distillation 2 hours, two layers of distillate point, lowest level distillate is lemongrass hydrosol.
Lemongrass hydrosol is stoste in the step (4), does not make any dilution processing.
Case study on implementation one:
By the taro after cutting blanching 60 seconds in 60 DEG C of hot water, pulls out in the short time and drain away the water.Then pure with lemongrass Reveal spraying and handle fresh-cut taro, drains taro surface moisture.It is packed using 0.01 millimeter of sealed polyethylene plastic, is finally housed in In 4 DEG C of insulating boxs.When storing 15 days, observes and count fresh-cut taro browning index.Compared with the control group, case study on implementation one is brown Varying index is than compareing low 61.82% (being shown in Table 1).
Case study on implementation two:
By the taro after cutting blanching 40 seconds in 80 DEG C of hot water, pulls out in the short time and drain away the water.Then pure with lemongrass Reveal spraying and handle fresh-cut taro, drains taro surface moisture.It is packed using 0.01 millimeter of sealed polyethylene plastic, is finally housed in In 6 DEG C of insulating boxs.When storing 15 days, observes and count fresh-cut taro browning index.Compared with the control group, case study on implementation two is brown Varying index is than compareing low 63.64% (being shown in Table 1).
Case study on implementation three:
By the taro after cutting blanching 20 seconds in 100 DEG C of hot water, pulls out in the short time and drain away the water.Then pure with lemongrass Reveal spraying and handle fresh-cut taro, drains taro surface moisture.It is packed using 0.01 millimeter of sealed polyethylene plastic, is finally housed in In 8 DEG C of insulating boxs.At cryopreservation 15 days, observes and count fresh-cut taro browning index.Compared with the control group, case study on implementation three Browning index than compareing low 81.82% (being shown in Table 1).
Control group:
The taro of cutting ultrapure water is impregnated 30 seconds, pulls out in the short time and drains away the water, use 0.01 millimeter of polyethylene Plastic film packaging is housed in 4 DEG C of insulating boxs.When storing 15 days, observes and count browning index.
The result of 1. case study on implementation of table control fresh-cut taro brown stain
Processing Browning index
Control group 1.83A
Case study on implementation one 0.70B
Case study on implementation two 0.67BC
Case study on implementation three 0.33C
The browning degree of fresh-cut taro section is divided into 0~4 grade in table.0 grade: without brown stain;1 grade: browned area, which is less than, to be cut The 25% of the face gross area;2 grades: browned area accounts for the 26~50% of the gross area;3 grades: browned area accounts for the 51~75% of the gross area; 4 grades: browned area is greater than the 75% of the gross area.Browning index=∑ (brown stain the piece numbers at different levels × the brown stain series)/always investigate taro The piece number.The data that browning index in table 1 obtains when being cryopreservation 15 days.Different capitalizations are indicated in 0.05 level difference Significantly.
Compare case study on implementation one:
By the taro after cutting blanching 60 seconds in 60 DEG C of hot water, pulls out in the short time and drain away the water.Then pure with lemongrass Reveal spraying and handle fresh-cut taro, drains taro surface moisture.It is packed using 0.01 millimeter of sealed polyethylene plastic, is finally housed in In 4 DEG C of insulating boxs.
When storing 15 days, observes and count fresh-cut taro browning index.
Compared with the independent processing for only passing through 60 DEG C of blanching treatments, through 60 DEG C after blanching 60 seconds, again with lemongrass hydrosol spraying Combination processing browning index than individually handling low 37.84% (being shown in Table 2)
The result of 2. comparative example one of table control fresh-cut taro brown stain
The measuring method of browning index is the same as table 1 in table 2.Different capitalizations indicate significant in 0.05 level difference.
Compare case study on implementation two:
By the taro after cutting blanching 20 seconds in 100 DEG C of hot water, pulls out in the short time and drain away the water.Then pure with lemongrass Reveal spraying and handle fresh-cut taro, drains taro surface moisture.It is packed using 0.01 millimeter of sealed polyethylene plastic, is finally housed in In 8 DEG C of insulating boxs.When storing 15 days, observes and count fresh-cut taro browning index.
Compared with the independent processing for only passing through 100 DEG C of blanching treatments, through 100 DEG C after blanching 20 seconds, again with the spray of lemongrass hydrosol The browning index of the combination processing of cloth is than individually handling low 57.69% (being shown in Table 3).
The result of 3. comparative example two of table control fresh-cut taro brown stain
The measuring method of browning index is the same as table 1 in table 3.Different capitalizations indicate significant in 0.05 level difference.
Major function of the invention:
The brown stain of fresh-cut taro is controlled, is prolonged storage period;Loss is reduced, is increased economic efficiency.
In conclusion after those skilled in the art read file of the present invention, according to the technique and scheme of the present invention with Technical concept is not necessarily to creative mental labour and makes other various corresponding conversion schemes, belongs to the model that the present invention is protected It encloses.

Claims (4)

1. a kind of processing method for controlling the brown stain of fresh-cut taro, it is characterised in that operating procedure is as follows:
(1) choosing the taro without machinery wound, no disease and pests harm is to process raw material, and is cleaned after removing surface silt with tap water with stainless Steel cutter peeling;
(2) taro after peeling is half-and-half cut into the taro piece of 1 cm thick;
(3) the taro piece after cutting is drained away the water after pulling out blanching 20~60 seconds in 60~100 DEG C of hot water;
(4) fresh-cut taro is handled with lemongrass hydrosol spraying again, drains taro surface moisture;
(5) it is packed, is housed in 4~8 DEG C of insulating boxs using 0.01 millimeter of sealed polyethylene plastic.
2. a kind of processing method for controlling the brown stain of fresh-cut taro according to claim 1, which is characterized in that the step (4) the lemongrass hydrosol in is stoste.
3. a kind of processing method for controlling the brown stain of fresh-cut taro according to claim 1, which is characterized in that the lemongrass is pure Dew the preparation method is as follows: the fresh lemon-grass of acquisition, is cut into 10 centimetre lengths, is put into distilling apparatus, by solid-liquid ratio 1:2 Ratio water is added, start to distill, collect the distillate in distillation 2 hours, distillate point two layers, lowest level distillate is perfume Mao Chunlu.
4. a kind of processing method for controlling the brown stain of fresh-cut taro according to claim 3, which is characterized in that the distillation Vapo(u)rizing temperature is 120 DEG C, and the return time of the distillation is 5min.
CN201910446884.6A 2019-05-27 2019-05-27 A kind of processing method controlling the brown stain of fresh-cut taro Pending CN110063365A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115413753A (en) * 2022-07-18 2022-12-02 韶关学院 Method for controlling color change of fresh-cut taros by using cinnamic acid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106719606A (en) * 2016-11-30 2017-05-31 福建省农业科学院作物研究所 A kind of cold storage method of fresh rose flower
CN107372801A (en) * 2017-06-23 2017-11-24 梁春 A kind of preservation method of fresh lotus rhizome
CN109169891A (en) * 2018-10-24 2019-01-11 韶关学院 A method of fresh-cut taro quality is kept using fragrant plant extract

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106719606A (en) * 2016-11-30 2017-05-31 福建省农业科学院作物研究所 A kind of cold storage method of fresh rose flower
CN107372801A (en) * 2017-06-23 2017-11-24 梁春 A kind of preservation method of fresh lotus rhizome
CN109169891A (en) * 2018-10-24 2019-01-11 韶关学院 A method of fresh-cut taro quality is kept using fragrant plant extract

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* Cited by examiner, † Cited by third party
Title
张甫生,等: "去皮芋头的护色研究", 《中国果菜》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115413753A (en) * 2022-07-18 2022-12-02 韶关学院 Method for controlling color change of fresh-cut taros by using cinnamic acid

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Application publication date: 20190730