Three-segment composite processing method for prolonging sea water vegetable fresh-keeping time
A technology of seawater vegetables and composite treatment, which is applied in the direction of preservation of fruits and vegetables, protection of fruits/vegetables with coating protection layer, preservation of fruits/vegetables through freezing/refrigeration, etc., which can solve the problems of ineffective extension of seawater vegetable preservation period, etc. To achieve the effect of clean and environmentally friendly production process, less quality change and low production cost
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Embodiment 1
[0021] Example 1: Freshness preservation of sea asparagus by three-stage compound treatment
[0022] Choose sea asparagus with clean and fresh branches, no soil and other debris, no inedible branches, no rot, no pests and mechanical damage, suitable maturity, good shape and color, and place them in plastic turnover boxes. Put it into a water-controlled vacuum cooler within 5 hours, use an absolute pressure of 1000Pa to lower its temperature to 3°C within 30 minutes, and control the water loss rate below 3%; then fill it with 20-30μL / L nitric oxide Carry out the treatment for 2-4 hours, and the treated sea asparagus shall be packed into 200×300mm in units of 150±2g 2 High-density polyethylene packaging bag (under the condition of 3 ℃, the O of the polyethylene film 2 Permeability-2 24 hours -1 atm -1 , CO 2 Permeability-2 24 hours -1 ·atm -1 , the packaging bag has an area of 1.4-1.8cm 2 , and with CO 2 / O 2 In the window covered by a silicone rubber film with a tran...
Embodiment 2
[0023] Example 2: three-stage compound treatment and preservation of Haiyingcai
[0024] Select clean and fresh branches, no soil and other debris, no rot, no pests and mechanical damage, suitable maturity, good shape and color, and place them in plastic turnover boxes. In the water vacuum cooler, use an absolute pressure of 400Pa to lower the temperature to 2°C within 20 minutes; then fill it with 5-20μL / L nitric oxide for 3-5h treatment, and the treated sea yingcai will be kept in 2- At a low temperature of 4°C, pack 120±2g into a polystyrene packing box with a specification of 18×12×4cm (the thickness of the packing box is 0.3mm, at 3°C in O 2 The permeability is 0.054mL·m -2 24 hours -1 atm -1 , CO 2 , the transmittance is 0.216mL·m -2 24 hours -1 atm -1 , there is a silicone rubber membrane in the center of the box length direction (under the condition of 20 ℃, the CO of the silicone rubber membrane 2 / O 2 The transmission ratio is 3 / 1, O 2 Transmittance 4.08×...
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