CN111685172A - Preservation method of Tiegun yam - Google Patents

Preservation method of Tiegun yam Download PDF

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Publication number
CN111685172A
CN111685172A CN202010587508.1A CN202010587508A CN111685172A CN 111685172 A CN111685172 A CN 111685172A CN 202010587508 A CN202010587508 A CN 202010587508A CN 111685172 A CN111685172 A CN 111685172A
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CN
China
Prior art keywords
palmitic acid
acid solution
dioscorea opposita
fresh
soaking
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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
CN202010587508.1A
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Chinese (zh)
Inventor
王清
左进华
高丽朴
曾诗娴
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Beijing Academy of Agriculture and Forestry Sciences
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Beijing Academy of Agriculture and Forestry Sciences
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Application filed by Beijing Academy of Agriculture and Forestry Sciences filed Critical Beijing Academy of Agriculture and Forestry Sciences
Priority to CN202010587508.1A priority Critical patent/CN111685172A/en
Publication of CN111685172A publication Critical patent/CN111685172A/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
    • 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
    • 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

The invention provides a fresh-keeping method of Tiegun Chinese yam. The fresh-keeping method comprises the following steps: soaking the cut of the dioscorea opposita in palmitic acid solution for 20-30 s, taking out, naturally drying, and storing at the temperature of 19-22 ℃. The concentration of the palmitic acid solution may be: 0.03g/L to 0.05 g/L. The dioscorea opposita thunb processed by the preservative can effectively inhibit incision browning and appearance quality degradation of the dioscorea opposita thunb, and the tissue state and freshness of the dioscorea opposita thunb are superior to those of a control experiment group; the storage time of the dioscorea opposita processed by the preservative can be prolonged to 6 days under the storage condition of 19-22 ℃; the concentration of the palmitic acid in the invention is within the safe dosage, and the palmitic acid is safe and has no side effect.

Description

Preservation method of Tiegun yam
Technical Field
The invention belongs to the technical field of food preservation, and particularly relates to a preservation method of Tiegun Chinese yam.
Background
The Chinese yam is a food with high nutritive value and homology of medicine and food, integrates three functions of delicious food, medicine and health care, and is a vegetable with homology of medicine and food published by the national ministry of health. The yam has the characteristics of convenience, nutrition and 100% edible rate, meets the requirements of people on diet in the current society, and is very popular with consumers. However, the dioscorea opposita stems are long and easy to break, so that the dioscorea opposita stems need to be cut before packaging and transportation, and the cuts are very easy to brown in the storage process. Browning can not only affect the appearance of the yam product, but also reduce the oxidation resistance of the yam product and affect the quality of the yam product, thereby reducing the commodity value of the yam product. The method utilizes the strong bactericidal property of lime to prevent mould from propagating on the yam cuts, thereby achieving the purpose of prolonging the storage time of the yams. However, lime has a strong damaging effect on the Chinese yam, and 1-3 cm of the head of the Chinese yam becomes hard, so that the taste is influenced and even the Chinese yam cannot be eaten. The methods such as low-temperature storage and heat treatment have poor effects and cannot be widely used.
Palmitic acid (palmitic acid), known as hexadecanoic acid, is a saturated higher fatty acid, white pearlescent flake. It is widely found in nature and almost all fats and oils contain palmitic acid components in various amounts. Used as precipitant, odorant and defoaming agent.
At present, no relevant report about the application of palmitic acid in the field of food preservation, particularly root vegetable preservation exists.
Disclosure of Invention
Aiming at the problems, the invention provides a method for inhibiting incision browning of dioscorea opposita.
The method for inhibiting the incision browning of the dioscorea opposita comprises the following steps: the incision of the dioscorea opposita was treated with palmitic acid solution.
Specifically, the method for inhibiting the incision browning of the dioscorea opposita comprises the following steps:
preparing a palmitic acid solution, soaking the cut of the dioscorea opposita in the prepared palmitic acid solution for 20-30 s, taking out, and naturally drying.
In the above method, the concentration of the palmitic acid solution (anhydrous ethanol as a solvent) may be: 0.03g/L to 0.05 g/L.
The dioscorea opposita is fresh and mature, and tissues with mechanical damage and diseases and insect pests are removed.
The soaking may be performed in an empty box that has been sterilized.
The application of the palmitic acid solution in the preservation of the dioscorea opposita belongs to the protection scope of the invention.
The application specifically can be as follows: inhibiting the cut of the Dioscorea opposita Thunb from browning; delaying the appearance quality reduction of the Tiegun yam; prolonging shelf life of rhizoma Dioscoreae.
The concentration of the palmitic acid solution can be 0.03 g/L-0.05 g/L.
The invention also provides a fresh-keeping method of the dioscorea opposita.
The invention provides a fresh-keeping method of Tiegun Chinese yam, comprising the following steps:
soaking the cut of the dioscorea opposita in palmitic acid solution for 20-30 s, taking out, naturally drying, and storing at the temperature of 19-22 ℃.
In the above preservation method, the concentration of the palmitic acid solution may be: 0.03g/L to 0.05 g/L.
The soaking may be performed in an empty box of a sterilized empty box.
The invention has the advantages that:
1. after the treatment of the preservative, the incision browning and appearance quality reduction of the dioscorea opposita can be effectively inhibited, and the tissue state and freshness of the dioscorea opposita are superior to those of a control experiment group (a salicylic acid treatment group and a benzoic acid treatment group);
2. the storage time of the dioscorea opposita processed by the preservative can be prolonged to 6 days under the storage condition of 20 ℃;
3. the concentration of the palmitic acid in the invention is within the safe dosage, and the palmitic acid is safe and has no side effect.
Drawings
FIG. 1 is a comparison graph of the browning degree of the incision on the 6 th day after the dioscorea opposita is treated with palmitic acid, salicylic acid and benzoic acid at different concentrations (0.03 g/L-0.05 g/L).
Detailed Description
The present invention will be described below with reference to specific examples, but the present invention is not limited thereto.
The experimental methods used in the following examples are all conventional methods unless otherwise specified; reagents, materials and the like used in the following examples are commercially available unless otherwise specified.
Examples 1,
A fresh-keeping method of Tiegun Chinese yam comprises the following steps:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: dissolving 0.03g of palmitic acid in 1L of absolute ethyl alcohol to prepare a 0.03g/L palmitic acid solution;
3. fresh-keeping step: placing the prepared palmitic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Control test 1.1:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: dissolving 0.03g of salicylic acid in 1L of water to prepare a salicylic acid solution of 0.03 g/L;
3. fresh-keeping step: placing the prepared salicylic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Control run 1.2:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: 0.03g of benzoic acid is dissolved in 1L of water to prepare 0.03g/L of benzoic acid solution;
3. fresh-keeping step: placing the prepared benzoic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Examples 2,
A fresh-keeping method of Tiegun Chinese yam comprises the following steps:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: dissolving 0.04g of palmitic acid in 1L of absolute ethyl alcohol to prepare a 0.04g/L palmitic acid solution;
3. fresh-keeping step: placing the prepared palmitic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Control experiment 2.1:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: dissolving 0.04g of salicylic acid in 1L of water to prepare a salicylic acid solution of 0.04 g/L;
3. fresh-keeping step: placing the prepared salicylic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Control run 2.2:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: dissolving 0.04g of benzoic acid in 1L of water to prepare 0.04g/L of benzoic acid solution;
3. fresh-keeping step: placing the prepared benzoic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Examples 3,
A fresh-keeping method of Tiegun Chinese yam comprises the following steps:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: dissolving 0.05g of palmitic acid in 1L of absolute ethyl alcohol to prepare a 0.05g/L palmitic acid solution;
3. fresh-keeping step: placing the prepared palmitic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Control run 3.1:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: dissolving 0.05g of salicylic acid in 1L of water to prepare 0.05g/L of salicylic acid solution;
3. fresh-keeping step: placing the prepared salicylic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
Control run 3.2:
1. selection of materials: selecting fresh and mature rhizoma Dioscoreae, and removing tissue with mechanical injury and diseases and insect pests;
2. preparing a preservative: 0.05g of benzoic acid is dissolved in 1L of water to prepare 0.05g/L of benzoic acid solution;
3. fresh-keeping step: placing the prepared benzoic acid solution in a sterilized empty box, soaking the cut of the dioscorea opposita into the solution for 30s, taking out and naturally drying;
4. storing at 20 ℃.
The results of examples 1-3 and the respective control experiments are shown in FIG. 1.
FIG. 1 is a graph showing the comparison of the browning degree of the incision on the 6 th day after the treatment of Tiegun yam with different concentrations (0.03 g/L-0.05 g/L) of palmitic acid, salicylic acid and benzoic acid. The control group was treated with deionized water in the same way as the experimental group. As can be seen from FIG. 1, the wound browning was significantly suppressed in the case of the Tiegun yam treated with the palmitic acid solutions of 0.03g/L, 0.04g/L and 0.05g/L, respectively, relative to the salicylic acid and the benzoic acid at the same concentrations. Wherein, the treatment effect of the 0.03 g/L-0.05 g/L palmitic acid solution is not obviously different.

Claims (8)

1. A method for inhibiting incision browning of Dioscorea opposita Thunb comprises the following steps: the incision of the dioscorea opposita was treated with palmitic acid solution.
2. The method of claim 1, wherein: the method comprises the following steps:
preparing a palmitic acid solution, soaking the cut of the dioscorea opposita in the prepared palmitic acid solution for 20-30 s, taking out, and naturally drying.
3. The method according to claim 1 or 2, characterized in that: the concentration of the palmitic acid solution is as follows: 0.03g/L to 0.05 g/L.
4. A method according to claim 2 or 3, characterized in that: the soaking is carried out in an empty box of the sterilized empty boxes.
5. Application of palmitic acid solution in preservation of rhizoma Dioscoreae is provided.
6. Use according to claim 5, characterized in that: the application is as follows: inhibiting the cut of the Dioscorea opposita Thunb from browning; delaying the appearance quality reduction of the Tiegun yam; prolonging shelf life of rhizoma Dioscoreae.
7. A preservation method of Tiegun yam comprises the following steps:
soaking the cut of the dioscorea opposita in palmitic acid solution for 20-30 s, taking out, naturally drying, and storing at the temperature of 19-22 ℃.
8. The preservation method according to claim 7, characterized in that: the concentration of the palmitic acid solution is as follows: 0.03g/L to 0.05 g/L.
CN202010587508.1A 2020-06-24 2020-06-24 Preservation method of Tiegun yam Pending CN111685172A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115474676A (en) * 2022-09-15 2022-12-16 北京市农林科学院 Fresh-cut purple yam slices with high antioxidant activity and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01256343A (en) * 1988-04-04 1989-10-12 Dai Ichi Kogyo Seiyaku Co Ltd Fresh preservation of lyophyllum aggregatum and preservative
US5968498A (en) * 1997-03-31 1999-10-19 Okada; Toru Freshness retaining gel composition
CN104365828A (en) * 2014-10-14 2015-02-25 山东农业大学 Method for preventing novel browning of fresh-cut Chinese yam
CN104982515A (en) * 2015-07-30 2015-10-21 庞锦浩 Chinese yam fresh-keeping technology
CN105076374A (en) * 2015-07-23 2015-11-25 天全县西蜀雅禾生态农业开发有限公司 Fresh keeping method of Chinese yam
CN105104505A (en) * 2015-07-09 2015-12-02 宋永令 Fresh-cut Chinese yam fresh keeping agent
CN106550982A (en) * 2015-09-28 2017-04-05 谭仙梅 A kind of preservation technique of Rhizoma Dioscoreae

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01256343A (en) * 1988-04-04 1989-10-12 Dai Ichi Kogyo Seiyaku Co Ltd Fresh preservation of lyophyllum aggregatum and preservative
US5968498A (en) * 1997-03-31 1999-10-19 Okada; Toru Freshness retaining gel composition
CN104365828A (en) * 2014-10-14 2015-02-25 山东农业大学 Method for preventing novel browning of fresh-cut Chinese yam
CN105104505A (en) * 2015-07-09 2015-12-02 宋永令 Fresh-cut Chinese yam fresh keeping agent
CN105076374A (en) * 2015-07-23 2015-11-25 天全县西蜀雅禾生态农业开发有限公司 Fresh keeping method of Chinese yam
CN104982515A (en) * 2015-07-30 2015-10-21 庞锦浩 Chinese yam fresh-keeping technology
CN106550982A (en) * 2015-09-28 2017-04-05 谭仙梅 A kind of preservation technique of Rhizoma Dioscoreae

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Title
马玉华等: "《火龙果高效栽培技术》", 30 April 2017, 贵州科技出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115474676A (en) * 2022-09-15 2022-12-16 北京市农林科学院 Fresh-cut purple yam slices with high antioxidant activity and preparation method thereof

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Application publication date: 20200922

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