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Lotus root storage method

The technology of lotus root tape and coating liquid is applied to the storage of lotus root tape and the storage field of vacuum packaging of chitosan coated lotus tape. The effect of strong negative pressure to ensure safety and reliability

Inactive Publication Date: 2014-02-12
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to freezing point regulators, color-protecting agents, hardeners, preservatives, and other treatments that affect the freezing point may also affect the freezing point of lotus root. Therefore, the problems involved in ice temperature storage are too complicated to be suitable for practical application. with fresh storage
[0004] To sum up, neither fresh-keeping liquid preservation, low-temperature preservation, such as freezing preservation and ice-temperature preservation, nor direct nitrogen filling or vacuum packaging storage can solve the problem of lotus root storage. Therefore, a new storage method is proposed. necessary

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Select fresh, undamaged, and uniformly thick lotus root belts, wash them, remove the head and tail, etc., and cut them into 8-10 cm long lotus root belts; soak them in 0.03% sodium hypochlorite solution for 15 ~20min, reduce the amount of bacteria, rinse and drain;

[0028] (2) Soak the drained lotus root section in the coating solution for coating, wherein the coating solution is a citric acid solution of chitosan and calcium chloride, and the mass percentage of chitosan is 2% , the mass percentage of calcium chloride is 1%;

[0029] (3) After the coating is complete, drain until there is no dripping liquid, and remove the excess liquid in the pores of the lotus root. After the film is coated, the lotus root segments are placed side by side and wrapped with plastic wrap. Pay attention to the appropriate amount of wrapping Tight to reduce the amount of residual air in the film, vacuum packed, and refrigerated at 0-5°C.

[0030] The change of chromaticity value dur...

Embodiment 2

[0050] (1) The method is the same as step (1) in Example 1.

[0051] (2) The method is the same as that of step (2) in Example 1, except that the mass percentage of chitosan is 1%.

[0052] (3) The same method as step (3) in Example 1.

[0053] The change of chromaticity value during the storage process is as follows: image 3 shown.

[0054] It can be seen from this figure that the browning of the lotus root can be effectively suppressed, and the texture and tissue characteristics of the lotus root can be maintained;

[0055] In the storage process (60 days) among the embodiment 1, the change situation of the discoloration value of lotus root belt is as follows image 3 As shown, it can be seen from the comparison that the quality of lotus root is relatively worse than that of 2% coating solution.

Embodiment 3

[0067] Its flow chart is as figure 1 shown.

[0068] (1) The method is the same as step (1) in Example 1.

[0069] (2) Vacuum infiltrate the preservative solution into the rinsed and drained lotus root section, the preservative solution consists of 0.2% vitamin C, 0.6% phytic acid, 0.2% citric acid, 1% calcium chloride and the rest The composition of water, the above-mentioned contents are in mass percentage, and the time is 15 minutes.

[0070] (3) The same method as step (2) in Example 1.

[0071] (4) The same method as step (3) in Example 1.

[0072] The change of chromaticity value during the storage process is as follows: Figure 4 shown.

[0073] It can be seen from the picture that the lotus root belt has been stored for 2 months, with good color, good texture and texture. After opening the package, the lotus root belt still maintains good color within a few hours. Compared with the treatment method in Example 1, when the storage period exceeds 40 days, the lotus ...

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Abstract

The invention discloses a lotus root storage method. The lotus root storage method includes the following steps of cutting cleaned lotus root into lotus root sections, and soaking the lotus root sections into film coating liquid for coating film; and wrapping with preservative films after draining the lotus root sections, and disposing the lotus root sections at the temperature of 0-5 DEG C after vacuum package, wherein the film coating liquid is citric acid solution of chitosan and calcium chloride. The lotus root storage method solves the problems that lotus roots are short in storage period and easy in brown stain, nutritional ingredients are easy to lose by soaking with preservative solution, liquid package and transport is inconvenient and the like, storage period of the lotus roots can be prolonged to two months, and tissue and texture characteristics of the lotus roots can be well kept.

Description

technical field [0001] The invention relates to a storage method of lotus root belts, in particular to a storage method of vacuum-packed chitosan-coated lotus root belts, belonging to the technical field of storage and processing of agricultural products. Background technique [0002] Fresh lotus root belt has high nutritional value, high water content, crisp and tender tissue, and is deeply loved by consumers. However, lotus root belt has a strong seasonality and is not easy to store. The main problem in the storage process is that it is easy to brown and soften. Therefore, The sales of lotus root belts are mainly fresh, short-term, and local sales. The consumption and processing of lotus root belts are mainly concentrated in Hubei, especially in Wuhan and its surrounding areas. The market has been in a state of short supply. Storage, processing, transportation, and sales have adverse effects. [0003] In order to solve the storage and fresh-keeping problem of lotus root b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23B7/08A23B7/153A23B7/00
Inventor 罗云波朱毅李珊傅达奇朱本忠翟百强
Owner CHINA AGRI UNIV
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