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Aquatic vegetable anti-staling agent

A technology of aquatic vegetables and preservatives, which is applied in the fields of fruit and vegetable preservation, chemical protection of fruits/vegetables, food preservation, etc., and can solve the problems of aggravation, difficult to keep fresh and store, perishable browning, etc.

Inactive Publication Date: 2008-01-16
FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because it is not resistant to storage, it is easy to rot and brown, especially after washing, it is difficult to keep fresh and store
[0003] Sulfite substances have a long history of use in the preservation of fresh agricultural products due to their good functions of preventing browning and color protection and preservation. However, recent studies have shown that sulfite substances can aggravate and induce respiratory diseases. Many countries have expressly banned the use of sulfites in the preservation of fresh agricultural products. China currently allows a limited amount, but this is not conducive to the export of agricultural products in our country

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The picked fresh lotus seeds should be removed within 4 hours from the lotus pods and shells. After washing with clean water, place them in a solution of 0.15% citric acid to isolate the air. Soak in chlorine solution for 15 minutes to sterilize, drain the free water, then soak in the preservative solution with the formula of 0.2% citric acid + 0.5% calcium chloride + 0.5% sodium tripolyphosphate + 0.2% vitamin C for 2 hours, and again After draining the free water, carry out vacuum packaging, the vacuum is (0.08Mpa, its storage, transportation, sales are all in the temperature environment of 0 ~ 4 ℃, and its fresh-keeping period is greater than or equal to 60 days.

Embodiment 2

[0017] The picked fresh lotus seeds should be removed within 4 hours from the lotus pods and shells. After washing with clean water, place them in a solution of 0.15% citric acid to isolate the air. Soak in chlorine solution for 15 minutes to sterilize, drain the free water, then soak in the preservative solution with the formula of 0.2% citric acid + 0.5% calcium chloride + 0.5% sodium tripolyphosphate + 0.2% vitamin C for 2 hours, and again After draining the free water, carry out the controlled atmosphere ratio of 90% N 2 +5%O 2 +5%CO 2 Modified atmosphere packaging, its storage, transportation, and sales are all in a temperature environment of 0-4°C, and its freshness period is less than or equal to 40 days, indicating that fresh lotus seeds are not suitable for storage in modified atmosphere packaging.

Embodiment 3

[0019] The harvested fresh Zizania zizania completes the process of removing the coating within 4 hours. After washing with clean water, cut into slices or shreds as required, put it in 0.15% citric acid solution to isolate the air, drain the free water, and dilute it in 300mg Soak in chlorine dioxide solution with a concentration of / kg for 15 minutes, drain free water, and then use a preservative solution with a formula of 0.2% citric acid + 0.5% calcium chloride + 0.3% sodium tripolyphosphate + 0.15% vitamin C Soak it in water for 2 hours, drain the free water again, and carry out vacuum packaging with a vacuum of 0.08Mpa. Its storage, transportation, and sales are all in a temperature environment of 0-5°C, and its fresh-keeping period is greater than or equal to 90 days.

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PUM

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Abstract

The invention relates to an aquatic vegetable preservative, which comprises citric acid, calcium chloride, sodium tripolyphosphate and vitamin C solution; the quality percentage concentration of the components are that: citric acid accounts for 0.15 percent to 0.2 percent; calcium chloride accounts for 0.5 percent; sodium tripolyphosphate accounts for 0.3 percent to 0.5 percent ; and vitamin C occupies 0.15 percent to 0.2 percent. The invention can be used in the refreshment of fresh lotus seeds, fresh water bamboo and fresh lotus root. The preservation methods are that: firstly, after the processing of sterilization, the fresh lotus seeds, fresh water bamboo and fresh lotus root are soaked for 15 minutes by the chlorine dioxide in a certain concentration; secondly, the dried fresh lotus seeds, fresh water bamboo and fresh lotus root are soaked and sterilized for 2 hours by the preservative in a certain percentage, and then the free water on which is drained; thirdly, a vacuum packaging or modified atmosphere packaging can be implemented for the materials, and then is arranged in the environment under 0 DEG C to 5 DEG C for storage; the shelf life for the aquatic vegetable is more than or equal to 60 days. After the toxicity test, the preservative is in a relative non-toxic level. The invention has the advantages of safety and high efficiency without sulfite components.

Description

technical field [0001] The invention relates to a fresh-keeping agent for aquatic vegetables such as fresh lotus seeds, fresh wild rice stems, and fresh lotus roots, and belongs to the technical field of agricultural product processing and food industry. Background technique [0002] Aquatic vegetables such as lotus seeds, wild rice stems and lotus roots are traditional agricultural products in China with a long history of planting. Because of its rich nutrition, high cellulose content, strong sewage discharge ability, and beauty and health care effects, it is loved by consumers at home and abroad, and it is also the main agricultural product exported by China. With the adjustment of China's rural industrial structure, its planting area and output have increased significantly. But because it is not resistant to storage, it is very easy to rot and brown, especially after washing, it is difficult to keep fresh and store. [0003] Sulfite substances have a long history of use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/14A23B7/154A23B7/157
Inventor 何建军陈学玲周明王俊关健周明全胡中立邱正明姚明华
Owner FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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