Preparation method of green degradable rice husk fast food oil-absorbing film

A rice husk and film technology is applied to the preparation of rice husk fast food oil-absorbing film and the field of fast-food film materials, which can solve the problems of poor practicability and high cost, and achieve the effects of oil absorption capacity, waste reduction and rapid adsorption.

Active Publication Date: 2020-10-16
张皓淇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, new paper lunch boxes or other catering packaging accessories also have the disadvantages of high cost and poor practicability.

Method used

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  • Preparation method of green degradable rice husk fast food oil-absorbing film
  • Preparation method of green degradable rice husk fast food oil-absorbing film
  • Preparation method of green degradable rice husk fast food oil-absorbing film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 A kind of preparation method of green degradable rice husk fast food oil-absorbing film comprises the steps:

[0026] (1) At room temperature, wash the rice husks with clean water, and then soak them in acetic acid solution overnight. The concentration of acetic acid solution is about 40wt%, then take them out, and dry them at a temperature of about 45°C, and then put them into steam In the explosion tank, and pass 0.8MPa water vapor into the steam explosion tank, keep it for 2 minutes, then open the steam explosion tank to quickly release the pressure, then wash with water and dry at 45°C;

[0027] (2) Dissolve chitosan and D,L-polylactic acid with a mass ratio of 1:5 in ethyl acetate to form a polymer solution, wherein the concentration of polylactic acid is about 20wt%, and the weight-average molecular weight of polylactic acid It is 120,000-140,000, and the weight average molecular weight of chitosan is 3-4 thousand;

[0028] Dissolve isopropyl triisos...

Embodiment 2

[0039] Embodiment 2 A kind of preparation method of green degradable rice husk fast food oil-absorbing film comprises the steps:

[0040] (1) After washing the rice husk with clear water, put it into the acetic acid solution for soaking, the temperature is 10°C, the time is 12h, the concentration of the acetic acid solution is 40wt%, then take it out, and bake it in an environment with a temperature of 40°C After drying, put it into a steam explosion tank, and pass 0.9MPa water vapor into the steam explosion tank, keep it for 3 minutes, then open the steam explosion tank to quickly release the pressure, then wash with water, and dry at 40°C;

[0041](2) Dissolve chitosan and D,L-polylactic acid with a mass ratio of 1:8 in ethyl acetate to form a polymer solution with a polylactic acid concentration of 10 wt%, wherein the polylactic acid has a weight-average molecular weight of 16- 180,000, the weight average molecular weight of chitosan is 5-6 thousand;

[0042] Dissolve isop...

Embodiment 3

[0047] Embodiment 3 A kind of preparation method of green degradable rice husk fast food oil-absorbing film comprises the steps:

[0048] (1) After washing the rice husks with clear water, put them into the acetic acid solution for soaking, the temperature is 25°C, the time is 2h, the concentration of the acetic acid solution is 32wt%, then take them out, and bake them in an environment with a temperature of 60°C After drying, put it into a steam explosion tank, and pass 1.0MPa water vapor into the steam explosion tank, keep it for 2 minutes, then open the steam explosion tank to quickly release the pressure, then wash with water, and dry at 60 °C;

[0049] (2) Dissolve chitosan and D,L-polylactic acid in ethyl acetate with a mass ratio of 1:10 to form a polymer solution with a polylactic acid concentration of 25 wt%, wherein the polylactic acid has a weight-average molecular weight of 15- 160,000, the weight average molecular weight of chitosan is 7-8 thousand;

[0050] Diss...

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Abstract

The invention discloses a preparation method of a green degradable rice hull fast food oil absorption film. The preparation method comprises the following steps: carrying out cleaning, acid treatmentand steam explosion on rice hulls; preparing a colloidal solution containing chitosan, polylactic acid, isopropyl titanate triisostearate, and the like; compounding the rice husks and the colloidal solution to prepare a film; carrying out phase inversion on the prepared film; and performing lipophilic treatment on the prepared thin film. The preparation method of the oil absorption film provided by the invention is simple and easy to operate; the raw materials are cheap, easy to obtain, safe, non-toxic and low in cost, the prepared fast food oil absorption film has the advantages of being safe, environmentally friendly, attractive, degradable and the like, excessive oily substances overflowing from upper-layer food can be effectively adsorbed when the fast food oil absorption film is placed at the bottom of a fast food box, and the fast food oil absorption film is particularly suitable for staple food fast food mixed with cooked rice such as cooked rice.

Description

technical field [0001] The invention relates to a fast food film material, in particular to a preparation method of a green and degradable rice husk fast food oil-absorbing film, and belongs to the technical field of agricultural product processing. Background technique [0002] The food delivery industry has taken advantage of the rise of the Internet, allowing people to taste delicious food without leaving home, which has brought a lot of convenience to food orderers, especially some college students and white-collar workers who work long hours. However, the food health problems emerging behind the takeaway food and drink should not be underestimated. This is because most takeaway meals are meaty and greasy food, especially some vegetables and rice mixed with staple food, such as rice bowls. Excessive oil in the food will seep into the bottom of the rice during delivery, which will affect the experience of the orderer. Moreover, eating rice with too much oil in the bottom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/40C08L97/02C08L5/08C08L67/04C08K3/22
CPCC08J9/40C08J2397/02C08J2405/08C08J2467/04C08K2003/2241
Inventor 张皓淇杨哪
Owner 张皓淇
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