Fresh keeping coating agent and application thereof in fresh keeping of medium-humidity dried longan pulp and medium-humidity dried litchi pulp

A film-coating agent and longan shell technology, which can be applied in application, fresh-keeping of fruits and vegetables, and protection of fruits/vegetables with a coating protective layer, and can solve problems such as unseen technical reports

Inactive Publication Date: 2016-02-03
HUIZHOU SIJIXIAN GREEN FOOD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are no related technical reports

Method used

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  • Fresh keeping coating agent and application thereof in fresh keeping of medium-humidity dried longan pulp and medium-humidity dried litchi pulp
  • Fresh keeping coating agent and application thereof in fresh keeping of medium-humidity dried longan pulp and medium-humidity dried litchi pulp
  • Fresh keeping coating agent and application thereof in fresh keeping of medium-humidity dried longan pulp and medium-humidity dried litchi pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take fresh longan shells, wash them, add water twice the weight of the shells, extract with warm water at 50°C for 4 hours, centrifuge after the extraction is completed, take the clear liquid and evaporate and concentrate to a solid content of 50%, to obtain longan shell extracts; Fresh longan core, wash, add water three times the weight of the core, leaching with warm water at 60°C for 3 hours, centrifuge after extraction, take the clear liquid and evaporate and concentrate to a solid content of 60%, to obtain the longan core extract; take fresh Litchi shells, washed, adding water twice the weight of the shells, leaching in warm water at 50°C for 3 hours, centrifuging after leaching, taking the clear liquid and evaporating and concentrating to a solid content of 50%, to obtain lychee shell extracts; take fresh lychees The core is washed, adding water 3 times the weight of the core, leaching with warm water at 60°C for 3.5 hours, centrifuging after the leaching is comple...

Embodiment 2

[0037] Take fresh longan shells, wash them, add water twice the weight of the shells, extract with warm water at 50°C for 4 hours, centrifuge after the extraction is completed, take the clear liquid and evaporate and concentrate to a solid content of 50%, to obtain longan shell extracts; Fresh longan core, wash, add water three times the weight of the core, leaching with warm water at 60°C for 3 hours, centrifuge after extraction, take the clear liquid and evaporate and concentrate to a solid content of 60%, to obtain the longan core extract; take fresh Litchi shells, washed, adding water twice the weight of the shells, leaching in warm water at 50°C for 3 hours, centrifuging after leaching, taking the clear liquid and evaporating and concentrating to a solid content of 50%, to obtain lychee shell extracts; take fresh lychees The core is washed, adding water 3 times the weight of the core, leaching with warm water at 60°C for 3.5 hours, centrifuging after the leaching is comple...

Embodiment 3

[0040] Take fresh longan shells, wash them, add water three times the weight of the shells, extract with warm water at 50°C for 4 hours, centrifuge after the extraction is completed, take the clear liquid and evaporate and concentrate to a solid content of 60%, to obtain longan shell extracts; Fresh longan core, wash, add water twice the weight of the core, extract with warm water at 70°C for 3 hours, centrifuge after the extraction is completed, take the clear liquid and evaporate and concentrate to a solid content of 50%, to obtain the longan core extract; take fresh Litchi shells, washed, adding water three times the weight of the shells, leaching in warm water at 50°C for 3 hours, centrifuging after the extraction was completed, taking the clear liquid and evaporating and concentrating to a solid content of 60%, to obtain lychee shell extracts; take fresh lychees The core is washed, and water twice the weight of the core is added, extracted with warm water at 70°C for 4 hou...

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Abstract

The invention discloses a fresh keeping coating agent and application thereof in the fresh keeping of medium-humidity dried longan pulp and medium-humidity dried litchi pulp. According to the fresh keeping coating agent disclosed by the invention, waste products in the processing course of the dried longan pulp and the dried litchi pulp, namely longan husks, longan seeds, litchi husks and litchi seeds are used as raw materials and are scientifically extracted so that a extract mixture is obtained, and the synergistic bacteriostasis effects of the extract mixture, pimaricin, honeysuckle essential oil and mint essential oil are sufficiently exerted to have better effects of restraining bacteria, yeast and/or mould, which are easy to produce in the fresh keeping process of dried fruits. Based on the extract mixture, chitosan in a reasonable proportion is utilized so that a film is successfully formed, the quality guarantee period of medium-humidity dried fruits is successfully prolonged in a manner of coating fresh keeping for the dried fruits, and the effects of comprehensively utilizing the raw materials and turning waste into wealth are achieved.

Description

technical field [0001] The present invention relates to the technical field of food processing and preservation, more specifically, to a fresh-keeping coating agent suitable for medium-humidity dried fruit, its preparation method and application, especially suitable for the preservation of medium-humidity dried longan and / or dried lychee application. Background technique [0002] Litchi and longan are popular tropical and subtropical fruits. However, due to storage, transportation and preservation problems, the supply area and delivery time of fresh lychee and longan have been limited. Therefore, dried litchi and dried longan have become an important form of processed products. The moisture content of traditional dried lychee and dried longan is about 10%, which is relatively dry and hard. The moisture content of dried fruit with medium humidity is 20% to 30%, and the taste is soft. It is a new product with market prospects. But the main problem with medium humidity dried ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154A23B7/16
Inventor 蔡国豪王娟李远志
Owner HUIZHOU SIJIXIAN GREEN FOOD
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