Chlorine dioxide stabilizing medium, preparation method, and disinfecting liquid prepared from chlorine dioxide stabilizing medium

A chlorine dioxide, chlorine dioxide fruit and vegetable technology, applied in the field of disinfectant solution, can solve problems such as instability, unfavorable use of ClO2, and inability to maintain the freshness and sterilization of fruits and vegetables, and achieve the effect of slowing down the rate of escaping solution

Inactive Publication Date: 2017-03-08
GUANGZHOU HARMONY FOOD SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the activated ClO 2 Disinfectants can only work in a short period of time, and cannot provide continuous protection for the freshness and sterilization of fruits and vegetables
Moreover, the activated ClO 2 The aqueous solution is more unstable under acidic conditions, and the volatilization speed will be accelerated, which is not conducive to the need for sustained release of ClO 2 The effect of using

Method used

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  • Chlorine dioxide stabilizing medium, preparation method, and disinfecting liquid prepared from chlorine dioxide stabilizing medium
  • Chlorine dioxide stabilizing medium, preparation method, and disinfecting liquid prepared from chlorine dioxide stabilizing medium
  • Chlorine dioxide stabilizing medium, preparation method, and disinfecting liquid prepared from chlorine dioxide stabilizing medium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] (1) Modified nano-TiO 2 Preparation of capsules:

[0079] Spherical SiO with an average particle size of 100nm will be prepared by the Stober method (refer to "Li Zi. Preparation and Characterization of Monodisperse Silica Microspheres. Chinese Ceramics: 2012 (48) 6: 12-16") 2 Nano powder 0.5g, through ultrasonic (1W / cm 2 , 30min) uniformly dispersed in 500mL absolute ethanol. Add 0.5g of dodecylamine and 1.0mL of butyl titanate successively under the emulsifying shear machine at room temperature and 8000rpm speed, react for 4 hours, filter with suction, transfer the obtained powder into a 50mL reaction kettle, and dissolve in 40mL absolute ethanol-deionized Water-ammonia mixed solution (ammonia concentration 26% by mass) (1:1:0.5, v / v) was subjected to hydrothermal treatment at 140°C for 16 hours, suction filtered, and the solid was taken to obtain a silicon-bearing precursor. The obtained silicon-bearing precursor was calcined at 400°C to remove the organic templat...

Embodiment 2

[0090] (1) Modified nano-TiO 2 Preparation of capsules:

[0091] Spherical SiO with an average particle size of 100 nm was prepared by the Stober method 2 Nano powder 1.0g, through ultrasonic (1W / cm 2 , 30min) uniformly dispersed in 500mL absolute ethanol. At room temperature, add 0.8g of dodecylamine and 1.5mL of butyl titanate successively under the 10000rpm rotating emulsification shearing machine, react for 5 hours, filter with suction, transfer the obtained powder into a 50mL reaction kettle, and dissolve in 40mL of absolute ethanol-deionized Water-ammonia water mixed solution (the concentration of ammonia water is 26% by mass) (1:1:0.5, v / v) was subjected to hydrothermal treatment at 150° C. for 17 hours, suction filtered, and the solid was taken to obtain a silicon-bearing precursor. After the silicon-bearing precursor was calcined at 600°C to remove the organic template, it was transferred to a 50mL reactor again, treated with 40mL of 1.0M sodium hydroxide solution ...

Embodiment 3

[0099] (1) Modified nano-TiO 2 Preparation of capsules:

[0100] Spherical SiO with an average particle size of 100 nm was prepared by the Stober method 2 Nano powder 1.5g, through ultrasonic (1W / cm 2 , 30min) uniformly dispersed in 500mL absolute ethanol. At room temperature, 1.0g of dodecylamine and 2.0mL of butyl titanate were sequentially added to an emulsifying shear machine at a speed of 12000rpm. After reacting for 6 hours, suction filtration was performed, and the obtained powder was transferred to a 50mL reaction kettle, and the The water-ammonia water mixed solution (the concentration of ammonia water is 26% by weight) was subjected to hydrothermal treatment at 160° C. for 18 hours under conditions (1:1:0.5, v / v), filtered by suction, and the solid was collected to obtain a silicon-bearing precursor. After the silicon-bearing precursor was calcined at 600°C to remove the organic template, it was transferred to a 50mL reaction kettle again, and was treated with 40m...

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Abstract

The invention discloses a chlorine dioxide stabilizing medium, a preparation method, and disinfecting liquid prepared from the chlorine dioxide stabilizing medium. The preparation method comprises the following steps of mixing mesoporous TiO2 capsules with isopropyl alcohol and gamma-aminopropyltriethoxysilane, performing a reflux reaction at 70-90 DEG C, and enabling obtained modified nanometer TiO2 capsules to be dispersed in an alkaline solution so as to obtain suspending liquid I; mixing chitosan with the isopropyl alcohol and glycidyltrimethylammonium chloride, performing a reflex reaction at 70-90 DEG C, performing extraction with anhydrous ethanol, performing drying, and enabling the obtained chitosan quaternary ammonium salt to dissolve in an alkaline solution so as to obtain a solution II; and mixing the suspending liquid I with the solution II so as to obtain the chlorine dioxide stabilizing medium. ClO2 is led into the chlorine dioxide stabilizing medium, and a reaction is performed, so that the disinfecting liquid is obtained. The disinfecting liquid is safe and non-toxic, and can rapidly remove microorganisms on the surfaces of fruits and vegetables for preservation of the fruits and the vegetables.

Description

technical field [0001] The invention belongs to the field of food industry, in particular to a chlorine dioxide stable medium, a preparation method and a disinfectant prepared therefrom. Background technique [0002] It is well known that chlorine dioxide (ClO 2 ) is a yellow-green irritating gas at room temperature and is easily soluble in water. It is a strong oxidizing agent and fungicide and is widely used in bleaching, disinfection, deodorization, aquaculture, wastewater treatment and other fields. ClO 2 It was discovered by scientists as early as 1811. With the gradual increase of people's consumption demand for fruit and vegetable products, ClO 2 Gradually gaining attention, especially in the last ten years, the development is particularly rapid. Studies have shown that ClO 2 It can not only effectively kill pathogenic microorganisms on the surface of fruits and vegetables, but also significantly prolong the shelf life of fruits and vegetables without reducing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L5/20
Inventor 李煌周武艺黄溪河麦卓贤谷文祥
Owner GUANGZHOU HARMONY FOOD SCI & TECH
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