Fresh-keeping agent and application thereof, and method for preserving polygonum viviparum bulbil by utilizing fresh-keeping agent
The technology of a preservative and Polygonum vulgaris is applied in the field of planting of traditional Chinese medicinal materials, which can solve the problems of consumption of nutrients, loss of vitality of the buds, and easy moulding of the buds, and achieves the effects of simple process operation, prolonging the preservation time and prolonging the preservation period.
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Embodiment 1
[0025] Remove the impurities from the harvested bulbils, and remove the leaves, flower spikes and shriveled bulbils with poor quality from the fresh Polygonum bulbils by winnowing machine;
[0026] Spray the bulbil surface with an aqueous preservative solution, wherein the preparation process of the aqueous preservative solution is: mix and dissolve 2g glycerin, 0.05g natamycin, and 0.05g methyl naphthalene acetate in water, add water to make it 100mL, and obtain the preservative Aqueous solution, spray the prepared 100mL preservative solution evenly on the surface of 1kg bulbils, then place in a ventilated place, and dry the moisture on the bulbil surface;
[0027] The bulbils after drying are packed in polyethylene film bags, and then stored in a cold store. The storage conditions are 3-5° C. of temperature and 70-85% relative humidity. The film thickness of polyethylene film bag is 0.04mm, and film bag length is 28cm, and width is 20cm.
Embodiment 2
[0029] Remove the impurities from the harvested bulbils, and remove the leaves, flower spikes and shriveled bulbils with poor quality from the fresh Polygonum bulbils by winnowing machine;
[0030] Spray the bulbil surface with an aqueous preservative solution, wherein the preparation process of the aqueous preservative solution is: mix and dissolve 1 g of chitosan, 0.05 g of natamycin, and 0.05 g of methyl naphthalene acetate in water, add water to make the volume to 100 mL, and obtain Antistaling agent aqueous solution, spray the prepared 100mL preservative solution evenly on the surface of 1 kg of bulbils, then place in a ventilated place, and dry the moisture on the surface of bulbils;
[0031] The bulbils after drying are packed in polyethylene film bags, and then stored in a cold store. The storage conditions are 3-5° C. of temperature and 70-85% relative humidity. The film thickness of polyethylene film bag is 0.04mm, and film bag length is 28cm, and width is 20cm.
Embodiment 3
[0033] Remove the impurities from the harvested bulbils, and remove the leaves, flower spikes and shriveled bulbils with poor quality from the fresh Polygonum bulbils by winnowing machine;
[0034] Spray bulbil surface with preservative aqueous solution, wherein the preparation process of preservative aqueous solution is: 1g chitosan, 2g glycerin, 0.05g methyl naphthalene acetate are mixed and dissolved in water, add water and make up to 100mL, promptly obtain preservative aqueous solution, Spray the prepared 100mL preservative solution evenly on the surface of 1kg of bulbils, and then place in a ventilated place to dry the moisture on the bulbil surface;
[0035] The bulbils after drying are packed in polyethylene film bags, and then stored in a cold store. The storage conditions are 3-5° C. of temperature and 70-85% relative humidity. The film thickness of polyethylene film bag is 0.04mm, and film bag length is 28cm, and width is 20cm.
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