CN103155973B - Edible film coating liquid used for quick-freezing fruits and vegetables, preparation method of edible film coating liquid and application of edible film coating liquid - Google Patents
Edible film coating liquid used for quick-freezing fruits and vegetables, preparation method of edible film coating liquid and application of edible film coating liquid Download PDFInfo
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- CN103155973B CN103155973B CN201210285902.5A CN201210285902A CN103155973B CN 103155973 B CN103155973 B CN 103155973B CN 201210285902 A CN201210285902 A CN 201210285902A CN 103155973 B CN103155973 B CN 103155973B
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Abstract
The invention discloses edible film coating liquid used for quick-freezing fruits and vegetables, a preparation method of the edible film coating liquid and application of the edible film coating liquid. The edible film coating liquid comprises 1.5-2.0 % of chitosan, 1.0 % tween-60, 0.5 % of beewax, 1.2-1.5% of glycerin, and the balance water. The edible film coating liquid is used for coating films of the fruits and the vegetables before the fruits and the vegetables are quick-frozen, and compared with fruits and vegetables without the films, the fruits and the vegetables with the films are smaller in juice wastage rate after the fruits and the vegetables are unfrozen.
Description
Technical field
The present invention relates to a kind of quick-freezing fruit vegetables edible film-coating liquid and its preparation method and application.
Background technology
Rapidly, wherein quick-frozen is a kind of principal mode of fruits and vegetables deep processing to China's fruits and vegetables deep processing development.Quick-freezing fruit vegetables year outlet average growth rate is up to 31%, and year is earned foreign exchange nearly 300,000,000 dollars.Quick-freezing fruit vegetables is to make it ℃ carry out below quick freezing in low temperature-37 fresh fruit of vegetables prepared using quick-freezing plant, make food central temperature in 15 min～20 min, drop to-18 ℃, and the fruits and vegetables that refrigerate and circulate-18 ℃ and following condition.Because quick-freezing fruit vegetables is to adopt low temperature quick freezing, make in external very short time, to reach ice crystal temperature in the cell of fruits and vegetables, cause the acicular crystal ice that simultaneously forms countless minimal types inside and outside cell, thereby avoided quality problems such as " freezing expansion, mechanical damage, the dehydration infringements " that cause because of slow freezing.And quick-freezing fruit vegetables can obtain maximum invertibity after thawing, the ice crystal of minimal type easily becomes water to be got back in original cell tissue, almost can recover the situation before freezing completely, thereby can keep to greatest extent color, shape, the strength of food.But in the actual operation of thawing, due to the difference of thawing technique, cause the fruits and vegetables that thaw to keep juice loss in result difference, the especially course of defrosting of original fruit-vegetable quality can affect product quality and outward appearance, affect the application of quick-freezing fruit vegetables in follow-up food processing.This drawback has especially limited quick-freezing fruit vegetables and has cured the application of industry.
Countries in the world are quite extensive to the research of edible film in recent years, utilizing edible film to improve the quality of fresh fruit of vegetables, and a large amount of research work has been done in Shelf-life aspect, but few in the research aspect quick-freezing fruit vegetables and application report about edible film.
Summary of the invention
The object of the invention is for the above-mentioned state of the art, a kind of quick-freezing fruit vegetables edible film-coating liquid is provided.The present invention also provides the preparation method and application of described quick-freezing fruit vegetables edible film-coating liquid.
The technical scheme that the present invention takes:
A kind of quick-freezing fruit vegetables edible film-coating liquid, is characterized in that comprising the component of following mass percent: shitosan 1.5-2.0%, and Tween-60 1.0%, beeswax 0.5%, glycerine 1.2-1.5%, surplus is water.
Described quick-freezing fruit vegetables by the preparation method of edible film-coating liquid is: each component mixed, is heated to 65 ℃ it is fully dissolved, and then cooling.
Utilize described quick-freezing fruit vegetables edible film-coating liquid quick-freezing fruit vegetables to be carried out to the method for film, its concrete steps are: fruits and vegetables are cleaned to cutting, peeling if desired, then immerses in described quick-freezing fruit vegetables edible film-coating liquid, leaves standstill 2min, taking-up is dried, and carries out quick-frozen at-37 ℃.
Edible film-coating liquid of the present invention is through Hebei province's analysis testing research Spot detection (testing result is in table 1), and result shows that it is nontoxic, edible transparent, does not affect the original quality of fruits and vegetables, can make the juice loss rate of quick-freezing fruit vegetables reduce by 8.71%.Edible film-coating liquid of the present invention can use under the environment of-40 ℃-40 ℃, does not come off and does not chap.
Table 1 Hebei province analysis testing research Spot detection result
| Interventions Requested | Test basis | Limitation requires (mg/kg) | Assay (mg/kg) |
| Plumbous (in Pb) | GB/T5009.12-2003 | 0.2 | 0.053 |
| Cadmium (in Cd) | GB/T5009.15-2003 | 0.03 | 0.008 |
| Arsenic (in As) | GB/T5009.11-2004 | 0.5 | 0.071 |
| Mercury (in Hg) | GB/T5009.17-2005 | 0.01 | 0.002 |
| Film effect | GB/T 10471-2008 | --- | 8.71% |
The specific embodiment
With specific embodiment, technical scheme of the present invention is set forth below, following examples are to the further illustrating of summary of the invention, rather than limit its scope.
Embodiment 1
Apple is cleaned, be cut into the big or small square for 1cm for subsequent use; Take the component of following mass percent: shitosan (food-grade, deacetylation >=90%) 2.0%, Tween-60 2.0%, beeswax 2.0%, glycerine 1.5%, surplus is water; Above-mentioned each component is mixed with and is heated to 65 ℃ it is fully dissolved, cooling; Apple piece is immersed in coating liquid, leave standstill 2min, taking-up is dried, and carries out quick-frozen at-37 ℃.After quick-frozen 17min, take out, at room temperature thaw, after thawing one hour, apple juice turnover rate does not have the apple of film to reduce by 8.71%.
Embodiment 2
Cucumber is cleaned, and the thin slice that is cut into 0.2mm is for subsequent use; Take the component of following mass percent: shitosan (food-grade, deacetylation >=90%) 1.5%, Tween-60 2.0%, beeswax 2.0%, glycerine 1.2%, surplus is water; Above-mentioned each component is mixed with and is heated to 65 ℃ it is fully dissolved, cooling; Cucumber slice is immersed in coating liquid, leave standstill 2min, taking-up is dried, and carries out quick-frozen at-37 ℃.After quick-frozen 15min, take out, at room temperature thaw, after the 40min that thaws, cucumber juice turnover rate is only 2.69%.
Claims (1)
1. a quick-freezing fruit vegetables edible film-coating liquid, is characterized in that the component that it comprises following mass percent: shitosan 1.5-2.0%, and Tween-60 2.0%, beeswax 2.0%, glycerine 1.2-1.5%, surplus is water;
It is preparation according to the following steps specifically:
Each component is mixed, be heated to 65 ℃ it is fully dissolved, then cooling;
It carries out film according to the following steps to quick-freezing fruit vegetables: fruits and vegetables are cleaned, and cutting, immerses in described quick-freezing fruit vegetables edible film-coating liquid, leaves standstill 2min, and taking-up is dried, and carries out quick-frozen at-37 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285902.5A CN103155973B (en) | 2012-08-13 | 2012-08-13 | Edible film coating liquid used for quick-freezing fruits and vegetables, preparation method of edible film coating liquid and application of edible film coating liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210285902.5A CN103155973B (en) | 2012-08-13 | 2012-08-13 | Edible film coating liquid used for quick-freezing fruits and vegetables, preparation method of edible film coating liquid and application of edible film coating liquid |
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| Publication Number | Publication Date |
|---|---|
| CN103155973A CN103155973A (en) | 2013-06-19 |
| CN103155973B true CN103155973B (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210285902.5A Expired - Fee Related CN103155973B (en) | 2012-08-13 | 2012-08-13 | Edible film coating liquid used for quick-freezing fruits and vegetables, preparation method of edible film coating liquid and application of edible film coating liquid |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105076380A (en) * | 2015-09-01 | 2015-11-25 | 徐州工程学院 | Composite coating preservative solution, preparation method and method for preserving instant garlic cloves |
| CN108522640B (en) * | 2018-03-12 | 2021-08-03 | 华南农业大学 | Fresh-cut avocado preservation method based on envelope and liquid nitrogen quick freezing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466883A (en) * | 2002-07-12 | 2004-01-14 | 上海三瑞化学有限公司 | Bi-component edible fruit and vegetable coating fresh-keeping agent and uses thereof |
| CN102057983A (en) * | 2010-11-23 | 2011-05-18 | 秦文 | Edible compound coating antistaling agent for drupes |
| CN102429008A (en) * | 2011-11-22 | 2012-05-02 | 长春工业大学 | Refrigerated blueberry chitosan coating fresh-keeping method |
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2012
- 2012-08-13 CN CN201210285902.5A patent/CN103155973B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466883A (en) * | 2002-07-12 | 2004-01-14 | 上海三瑞化学有限公司 | Bi-component edible fruit and vegetable coating fresh-keeping agent and uses thereof |
| CN102057983A (en) * | 2010-11-23 | 2011-05-18 | 秦文 | Edible compound coating antistaling agent for drupes |
| CN102429008A (en) * | 2011-11-22 | 2012-05-02 | 长春工业大学 | Refrigerated blueberry chitosan coating fresh-keeping method |
Non-Patent Citations (2)
| Title |
|---|
| 可食性膜在冷冻食品中应用的研究进展;邓云等;《制冷学报》;20090430;第30卷(第2期);第25页第2段及表1 * |
| 邓云等.可食性膜在冷冻食品中应用的研究进展.《制冷学报》.2009,第30卷(第2期),第25页第2段及表1. |
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| CN103155973A (en) | 2013-06-19 |
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Address after: Zhengding County Rural South Hebei city of Shijiazhuang Province under the good 050800 Patentee after: Hebei large biological Polytron Technologies Inc Address before: Zhengding County Rural South Hebei city of Shijiazhuang Province under the good 050800 Patentee before: Hebei Red Sun Foods Co., Ltd. |
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Granted publication date: 20140514 Termination date: 20180813 |
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