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Method for using banana skin extract as protein textile material antibacterial dye

A banana peel and protein technology, applied in dyeing, azo dyes, organic dyes, etc., can solve problems such as environmental pollution

Active Publication Date: 2015-11-25
苏州大上科高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The annual output of bananas in China is about 9.5 million tons, ranking third in the world, but people only eat the pulp, and the banana peels, which account for 30-40% of the weight of the whole banana fruit, are discarded at will, polluting the environment

Method used

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Examples

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Effect test

specific Embodiment 1

[0026] Specific embodiment 1: A kind of method that adopts the technology that ultrasonic extraction combines with ceramic membrane separation and purification to prepare banana peel pigment powder and be used as wool fabric antibacterial dye

[0027] The method comprises the following process steps:

[0028] Step 1. Vacuum drying

[0029] Cut fresh banana peels into small pieces with a length of 2 cm, place them in a vacuum drying oven for drying, vacuum degree 133Pa, drying temperature 70°C, and dry until dry;

[0030] Step 2. Crushing

[0031] Adopt universal plant pulverizer to pulverize the dried banana peel sheet into 10 mesh powder;

[0032] Step 3. Ultrasonic extraction

[0033] The crushed banana peel powder is extracted with a mixed solvent of ethanol and water, characterized in that the ethanol mass percentage content is 40%, the ultrasonic frequency is 19KHz, the power is 360W, the duty cycle is 40%, the extraction temperature is 50°C, and the extraction time 2...

specific Embodiment 2

[0046] Specific embodiment 2: a kind of method that adopts the technology that ultrasonic extraction combines with ceramic membrane separation and purification to prepare banana peel pigment powder and be used as wool fabric antibacterial dye

[0047] The method comprises the following process steps:

[0048] Step 1. Vacuum drying

[0049] Cut fresh banana peels into small pieces with a length of 3 cm, place them in a vacuum drying oven for drying at a vacuum degree of 150 Pa, and a drying temperature of 80°C until dry;

[0050] Step 2. Crushing

[0051] Adopt universal plant pulverizer to pulverize the dried banana peel sheet into 20 mesh powder;

[0052] Step 3. Ultrasonic extraction

[0053] The crushed banana peel powder is extracted with a mixed solvent of ethanol and water, the mass percentage of ethanol is 60%, the ultrasonic frequency is 20KHz, the power is 480W, the duty cycle is 30%, the extraction temperature is 40°C, and the extraction time is 12min. Ratio 1:30...

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Abstract

The invention relates to a method for manufacturing banana skin pigment powder by adopting the technology with the combination of ultrasonic extraction and ceramic filtration membrane separation and purification and using the banana skin pigment powder as protein textile material antibacterial dye. The method comprises the following steps of fresh banana skin obtaining, vacuum drying, smashing, ultrasonic extraction, rough filtration, ceramic filtration membrane filtering, condensation through the adoption rotary evaporation, spray drying, powder pigment obtaining, direct dying, cleaning and brown protein textile obtaining. According to the method, the extraction rate of flavonoid and tannin polyphenol pigment in banana skin is increased, polysaccharide, pectin, protein and other macromolecule impurities in the banana skin are removed, and the purity and the antibacterial activity of the pigment are improved. The obtained banana skin pigment is safe and high in antibacterial activity, and the Escherichia coli decreasing rate of the obtained brown protein textile reaches more than 90%.

Description

technical field [0001] The invention relates to a method for preparing banana peel pigment powder and using it as an antibacterial dye for protein textile materials by combining ultrasonic extraction and ceramic filter membrane separation and purification, and belongs to the technical fields of natural waste utilization and textile dyeing and finishing. Background technique [0002] Banana is one of the tropical fruits in South China. It is not only rich in nutritional value, but also has a large annual output. China's annual banana output is about 9.5 million tons, ranking third in the world, but people only eat its pulp, and the banana peels that account for 30 to 40% of the weight of the whole banana are discarded at will, polluting the environment. Studies have found that banana peels contain a variety of antioxidant and antibacterial active ingredients, mainly polyphenols. In recent years, the resource utilization of polyphenol components in banana peels has gradually ...

Claims

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Application Information

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IPC IPC(8): D06P1/34D06P3/04D06P3/14C09B61/00
Inventor 侯秀良郭雪玲高海燕
Owner 苏州大上科高新材料有限公司
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