Film packaging method for maintaining small curd appearance quality and nutritive health-care components of broccoli

A technology of film packaging and broccoli, which is applied in the field of vegetable storage, can solve the problems of inability to effectively control the growth of microorganisms on the surface of broccoli, unsuitable storage of broccoli, high cost of cold chain and air conditioning, and achieve the maintenance of appearance quality, good appearance quality, The effect of extending shelf life

Inactive Publication Date: 2008-03-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In developing countries like my country, cold chain and air conditioning are not common due to their high cost; while for broccoli, hot water treatment may destroy its nutritional quality, and the heat treatment must strictly control the treatment temperature and time, which makes the operation more difficult. large; and irradiation treatment cannot effectively control the growth of microorganisms on the surface of broccoli, so it is not suitable for the storage of broccoli.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: Direct film packaging of broccoli florets harvested at lower natural ambient temperature (1-10° C.).

[0015] Broccoli is a vegetable that likes to be cool, and it is generally harvested when the natural ambient temperature is low (for example, 1-10°C). Film packaging is carried out directly at the harvesting site or a nearby packaging site. The specific operation is: select freshly harvested broccoli curds with firm curds, dark green color, and unopened florets, cut the curds into florets with a pedicel length of about 2 cm, and sterilize the surface with 100 μL / L NaOC1 After 1 minute, wash with clean water and dry, put them into polyethylene (thickness 0.04mm) film bags with a size of 30cm×20cm, ten florets per bag, and close the mouth of the bag. Film-packed broccoli florets ready to pack directly into foam or cardboard boxes for dropshipping or shipping and selling

Embodiment 2

[0016] Embodiment 2: Direct film packaging of broccoli florets harvested at relatively high ambient temperature (11-20° C.).

[0017] Broccoli that hit the market in the spring may experience higher temperatures when harvested. After harvesting, film packaging should be directly carried out at the harvesting place or a nearby packing place. The specific operation is: select freshly harvested broccoli curds with firm curds, dark green color, and unopened florets, cut the curds into florets with pedicels about 2 cm long, and disinfect the surface with 100 μL / L NaOCl 1min, after washing with clean water and drying, put them into a polyethylene (thickness 0.04mm) film bag with a specification of 30cm×20cm, ten small flower balls in each bag, close the bag mouth, and tie two holes with a diameter of Microholes of 600μm-800μm or two large holes with a diameter of 6-9mm. Film-packed broccoli florets can be packed directly into foam or cardboard boxes for direct distribution or shor...

Embodiment 3

[0018] Example 3: Low temperature treatment and film packaging of broccoli florets harvested at relatively high ambient temperature (11-20° C.).

[0019] Broccoli that hit the market in the spring may experience higher temperatures when harvested. After harvesting, pre-cool quickly by adding ice or refrigerating, and immediately carry out film packaging at the harvesting place or a nearby packing place. The specific operation is: select freshly harvested broccoli curds with firm curds, dark green color, and unopened florets, cut the curds into florets with a pedicel length of about 2 cm, and sterilize the surface with 100 μL / L NaOC1 After 1 minute, wash with clean water and dry, put them into polyethylene (thickness 0.04mm) film bags with a size of 30cm×20cm, ten florets per bag, and close the mouth of the bag. Film-packed broccoli florets can be temporarily stored in cold storage according to actual needs, or directly packed into foam boxes with ice on the top layer for long...

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Abstract

The invention provides a film packaging method for maintaining appearance quality and nutrition component of small curd of broccoli. The method not only can be used as internal package for transportation, but also for sale package. The package provided by the invention is characterized in that fresh curd of broccoli is cut into small curd with 2cm pedicel can then small curd is packaged into a 0.02mm-0.04mm polyethylene film bag after sterilization, cleaning and drying, moreover, ten small curds are packaged in one bag with a sealed port or a microhole of 600mum-800mum diameter. The invention has twenty nine days of shelf life (ten days of shelf life for the reference substance) if stored under 4 celsius degree. After ten-day storage, the small curd has good appearance quality and retention percentage of nutrition component is more than 85 percent and is more than two times of the reference substance; retention percentage of health care component is 88 percent and is two times of the reference substance. The invention has seven days of shelf life (three days of shelf life for the reference substance) if stored under 20 celsius degree. After five-day storage, the small curd has good appearance quality and retention percentage of nutrition component is about 80 percent and is more than two times of the reference substance; retention percentage of health care component is 85 percent and is four times of the reference substance.

Description

technical field [0001] The invention belongs to vegetable storage technology and relates to film packaging of broccoli florets. Background technique [0002] Broccoli, also known as broccoli, Italian kale, and tender-stem cauliflower, belongs to a variety of Brassica genus that uses green cauliflower as its product. Its edible parts include the plump flower stalks, pedicels, and clusters of flower buds. Broccoli is fragrant, crisp, juicy, nutritious, and rich in vitamin C. It is regarded as a high-end health vegetable by countries all over the world, and its demand is large and stable. At present, the production and sales of blue and white radish in my country are increasing year by year, and it has become one of the main vegetables for export to earn foreign exchange. Broccoli is very easy to age after harvesting. With the degradation of chlorophyll, the curds will turn yellow, and due to the loss of water in the tissues, the stems and flower buds will lose their filling ...

Claims

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Application Information

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IPC IPC(8): A23B7/00A23B7/16A23B7/157
Inventor 汪俏梅孙勃袁晶徐超炯
Owner ZHEJIANG UNIV
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