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Stable nano bubbles based on surfactant and preparation method of nano bubbles

A surfactant and nano-bubble technology, applied in mixing methods, chemical instruments and methods, dissolution, etc., can solve problems such as poor stability, achieve high stability, increase extraction rate, and save time

Pending Publication Date: 2021-11-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nanobubbles in pure water are easy to aggregate due to too small electrostatic repulsion, and their stability is poor.
It has been reported in the literature that CO in pure water 2 -The stability of NBs is only 48h

Method used

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  • Stable nano bubbles based on surfactant and preparation method of nano bubbles
  • Stable nano bubbles based on surfactant and preparation method of nano bubbles
  • Stable nano bubbles based on surfactant and preparation method of nano bubbles

Examples

Experimental program
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Effect test

Embodiment 1

[0030] This embodiment provides a method for preparing nanobubbles based on surfactant stabilization, comprising the following steps:

[0031] (1) Prepare 3 mL of Tween 80 solution with a concentration of 1 cmc. After fully dissolving, transfer it to a 5 mL glass bottle and seal it with a cap.

[0032] (2) Preparation of CO by compression-decompression method 2 -NBs. First use a needle syringe to inject CO 2 After the gas is injected into the glass bottle described in step (1) to reach a maximum pressure of 0.4 MPa, it is slowly decompressed to atmospheric pressure. Repeat compression-decompression 30 times, in supersaturated CO 2 CO is produced in solution 2 -NBs.

Embodiment 2

[0034] This embodiment provides a method for preparing nanobubbles based on surfactant stabilization, comprising the following steps:

[0035] (1) Prepare 3 mL of Tween 80 solution with a concentration of 3 cmc. After fully dissolving, transfer it to a 5 mL glass bottle and seal it with a cap.

[0036] (2) Preparation of CO by compression-decompression method 2 -NBs. First use a needle syringe to inject CO 2 After the gas is injected into the glass bottle described in step (1) to reach a maximum pressure of 0.4 MPa, it is slowly decompressed to atmospheric pressure. Repeat compression-decompression 30 times, in supersaturated CO 2 CO is produced in solution 2 -NBs.

Embodiment 3

[0038] This embodiment provides a method for preparing nanobubbles based on surfactant stabilization, comprising the following steps:

[0039] (1) Prepare 3 mL of Tween 80 solution with a concentration of 5 cmc. After fully dissolving, transfer it to a 5 mL glass bottle and seal it with a cap.

[0040] (2) Preparation of CO by compression-decompression method 2 -NBs. First use a needle syringe to inject CO 2 After the gas is injected into the glass bottle described in step (1) to reach a maximum pressure of 0.4 MPa, it is slowly decompressed to atmospheric pressure. Repeat compression-decompression 30 times, in supersaturated CO 2 CO is produced in solution 2 -NBs.

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Abstract

The invention discloses stable nano bubbles based on a surfactant and a preparation method of the nano bubbles. The preparation method comprises the steps of (1) preparing an aqueous solution of the surfactant, placing the aqueous solution of the surfactant in a container after fully dissolving, and covering and sealing the container; and (2) injecting gas into the aqueous solution of the surfactant, increasing the pressure in the container to 0.1-1MPa, then gradually reducing the pressure to atmospheric pressure, and repeatedly mixing for multiple times in a pressure increasing-pressure reducing mode to generate nano bubbles (NBs) in the supersaturated gas solution so as to form the stable nano bubbles based on the surfactant. The preparation method provided by the invention can improve the stability of the nano bubbles.

Description

technical field [0001] The invention relates to the technical field of food science and engineering, in particular to a surfactant-based stable nanobubble and a preparation method thereof. Background technique [0002] Plant polyphenols widely exist in the roots, fruits, leaves and skins of plants. They are a class of phenolic secondary metabolites with a polyphenol structure, exhibiting various physiological activities such as anti-oxidation, anti-cancer, hypolipidemic, and antibacterial. . The common extraction method of plant polyphenols is organic solvent extraction. According to the principle of similar miscibility, the organic solvents used mainly include ethanol, methanol and acetone. However, the traditional organic solvent extraction method requires organic solvents that are bulky, expensive, and prone to residues. Therefore, it is of great significance to develop new green phenolic substances extraction methods to improve the extraction rate of polyphenols. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/04B01F13/06
Inventor 罗自生张入元米拉尔·贾维德李栋徐艳群
Owner ZHEJIANG UNIV
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