Freshness retaining method of fresh-cut celery

A fresh-keeping method, celery technology, applied in the direction of fruit and vegetable preservation, food preservation, fruit/vegetable preservation through freezing/refrigeration, etc., can solve the problems of prolonging the shelf life of fresh-cut celery, high production cost, and large investment, and achieve sensory suppression Decrease in quality, increase in weight loss rate, and prolong shelf life

Inactive Publication Date: 2012-12-05
SHANGHAI OCEAN UNIV
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Problems solved by technology

[0010] During the storage process of fresh-cut celery, its sensory quality, weight loss rate, membrane permeability, vitamin C content, chlorophyll content and total number of colonies, etc. will have a series of changes. The technical problem to be solved by the present invention is to avoid the traditional fresh-keeping methods Due to the disadvantages of large investment, high production

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  • Freshness retaining method of fresh-cut celery
  • Freshness retaining method of fresh-cut celery
  • Freshness retaining method of fresh-cut celery

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Embodiment Construction

[0042] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0043] The celery variety is local parsley in Shanghai. When picking celery, the sensory characteristics, maturity, color, cleanliness, and hardness of the variety are used to identify the characteristics, maturity, color and luster, cleanliness, and hardness of the celery; if there are obvious external symptoms of rot, disease and insect damage, and mechanical injury, the eye-side method is used. Vacuum pre-cooling is used during pre-cooling, spray water 30 g / kg before pre-cooling, pre-cooling time is 4 minutes, vacuum degree is 200 Pa, and the final temperature of pre-cooling is 4 °C. Immediately after screening and grading, the seven-ripe celery with uniform length and size was removed, and the leaves and celery tendons were removed, and then it...

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Abstract

The invention provides a method for retaining freshness of fresh-cut celery by combining ozone water washing and controlled atmosphere packaging. An ozone concentration in the ozone water is 0.9-1 milligram/L. Vacuum pre-cooling is carried out on fresh picked celery, screen grouping is carried out from aspects such as color, hardness and aroma, medium-well celery uniform in length and size is selected in each group, leaves removal, rib removal, cutting, washing and drying are carried out, the celery is filled in a controlled atmosphere packaging bag, 5% of O2, 10% of CO2 and 85% of N2 are filled in the packaging bag, heat sealing is carried out, and the celery is placed in a constant temperature and humidity box at the temperature of 2-4 DEG C for storage. The method has the advantages of effectively restraining reduction of sensory quality, increase of weight-loss ratio, decomposition of vitamin C and chlorophyll and increase of total bacterial count and membrane permeability. Compared with a control group washed by distilled water, the freshness retaining method can obviously prolong shelf life of the fresh-cut celery to 50 days. The freshness retaining method is simple, convenient, practical, low in cost, safe and free of residues.

Description

[0001] technical field [0002] The invention relates to a fresh-keeping method for vegetables, in particular to a fresh-keeping method for celery, especially a fresh-cut fresh-cut celery method. Background technique [0003] Celery is one of the leafy vegetables that people generally eat in daily life. It is not only rich in protein, vitamins, inorganic salts and other nutrients, but also contains active substances such as apigenin, berganolide and volatile oil. It has a special antihypertensive effect. , lowering blood fat, anticancer and other medicinal value. However, the quality of postharvest celery declined rapidly, mainly manifested as dehydration wilting, degreening and yellowing, and tissue aging. The storage and preservation of celery mainly include ordinary refrigeration, controlled atmosphere storage, preservative treatment and coating preservation. [0004] With the continuous improvement of people's living standards, fresh-cut vegetables are also called cut ...

Claims

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Application Information

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IPC IPC(8): A23B7/00A23B7/148A23B7/04
Inventor 谢晶朱军伟王金锋何蓉施建兵熊青
Owner SHANGHAI OCEAN UNIV
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