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Bacterial cellulose edible packaging product and production method thereof

A technology of bacterial cellulose and bacterial cellulose film, which is applied in the field of biotechnology and food packaging materials, can solve the problem of high cost, achieve the effect of reducing consumption and alleviating pollution pressure

Inactive Publication Date: 2011-10-12
GUANGDONG IND TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Protein film as packaging material has good elasticity, strength and moisture resistance, but the cost is generally higher

Method used

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  • Bacterial cellulose edible packaging product and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0020] Take 10L of coconut water, add MgSO 4 0.02%, KH 2 PO 4 0.02%, NaCl 0.5%, filter out the insoluble matter, adjust the pH to 7.0, put it into a 15L fermenter, heat it with steam, sterilize at 110°C for 30min, and cool it to 29°C with cooling water. Inoculate 1 L of Acetobacter xylinum species prepared by shaking flasks into 10 L medium by flame method, with an inoculum size of 10%. The stirring speed is 150 rpm, the ventilation ratio is 1:3, the temperature is controlled at 29° C., and fermentation is carried out for 5 hours. Then put the fermented liquid into sterilized glass molds with specifications of 20cm×7cm×8cm (length×width×height). Static culture for 6 days. Collect the grown bacterial cellulose wet film, soak it in 1% NaOH solution for 20 minutes in a sterile room, then soak it in 2% hydrogen peroxide for 30 minutes to decolorize it, then rinse it with sterile water until it is neutral, and dry it in an oven at 105°C. Make a bacterial cellulose dry film wit...

Embodiment example 2

[0022] Take chayote juice 10L, add MgSO 4 0.02%, KH 2 PO 4 0.02%, NaCl 0.5%, heat and boil for 5 minutes to destroy chlorophyll, then filter to remove insoluble matter, adjust pH to 7.2, put into a 15L fermenter, heat with steam, sterilize at 110°C for 30min, and cool to 29°C with cooling water. Inoculate 1 L of Acetobacter xylinum species prepared by shaking flasks into 10 L medium by flame method, with an inoculum size of 10%. The stirring speed is 150 rpm, the ventilation ratio is 1:3, the temperature is controlled at 29° C., and fermentation is carried out for 5 hours. Then put the fermented liquid into sterilized plastic molds with specifications of 20cm×7cm×8cm (length×width×height). Static culture for 6 days. Collect the grown bacterial cellulose wet film, soak it in 0.8% NaOH solution for 30 minutes in a sterile room, then soak it in 1.5% hydrogen peroxide for 40 minutes to decolorize, then wash it with sterile water until neutral, and dry it in an oven at 105 ° C....

Embodiment example 3

[0024] Take chayote juice 80L, add MgSO 4 0.02%, KH 2 PO 40.02%, NaCl 0.5%, heating and boiling for 5 minutes to destroy chlorophyll, then filter to remove insoluble matter, and adjust pH to 7.2. Take 10L, put it into a 15L seed tank, heat it with steam, sterilize at 110°C for 30min, and cool it down to 28°C with cooling water. Inoculate 1 L of Acetobacter xylinum species prepared by shaking flasks into 10 L medium by flame method, with an inoculum size of 10%. The stirring speed is 150 rpm, the ventilation ratio is 1:3, the temperature is controlled at 28° C., and fermentation is carried out for 8 hours. The remaining 70L was put into a 100L fermenter, heated by steam, sterilized at 110°C for 30min, and cooled to 28°C with cooling water. The seeds were sent by the pressure difference method, the stirring speed was 150 rpm, the ventilation ratio was 1:2, the temperature was controlled at 28° C., and fermentation was carried out for 4 hours. Then put the fermented liquid i...

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Abstract

The invention relates to a bacterial cellulose edible packaging product and a production method thereof, mainly aims to provide an edible food packing material and a preparation method thereof, and belongs to the technical field of biotechnology and food packaging materials. In the method, a bacterial cellulose film is produced by taking fruit and vegetable juice such as coconut milk, chayote juice, white gourd juice and the like as raw materials and acetobacter xylinum or acetobacter pasteurianus as strains through fermentation; and then the bacterial cellulose film is treated by alkali and hydrogen peroxide sequentially and then dried to form the edible food packaging product.

Description

technical field [0001] The invention relates to a bacterial cellulose edible packaging product and a production method thereof, belonging to the technical field of biotechnology and food packaging materials. Background technique [0002] At present, the food packaging materials on the market are mainly plastic products derived from petroleum. The advantage of this material is that it is cheap and easy to carry. The material itself is stable, so it allows food to be stored for a long time. But this packaging material also has serious drawbacks. First, these materials are non-renewable and non-degradable, causing great pressure on the environment; second, the materials themselves may become a source of food pollution. It is an inevitable choice for social and economic development to develop new green food packaging materials to replace plastic packaging. At present, polylactic acid and natural fiber materials are good green packaging materials. In addition, edible packagi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/46C12P19/04C12R1/02
Inventor 李家洲肖玉平黄荣林赵鑫张冬青
Owner GUANGDONG IND TECHN COLLEGE
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