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A kind of nanocrystalline cellulose edible ink and preparation method thereof

A technology of nanocrystalline cellulose and edible properties, applied in the field of edible ink and its preparation, can solve the problems of high price, immature technology, unsuitable for large-scale production, etc., and achieve the effect of promoting sales and good color

Inactive Publication Date: 2018-07-10
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few domestic reports on edible inks, and the technology has not reached a mature level. Only a few companies can produce edible inks and their prices are high, which is not suitable for large-scale production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] Preparation of nanocrystalline cellulose:

[0030] (1) Pre-hydrolysis: Wash the corn stalks with water to remove impurities, cut them into 1-2cm long and 0.5cm wide sections after drying, and balance the moisture; then at 170°C, add water and glacial acetic acid, the amount of glacial acetic acid is 2% (ice Acetic acid and the mass percent of dry corn stalk), liquid ratio 5:1, process 30min, filter, water washing;

[0031] (2) Sulphate cooking: at 25% sulfidation degree, 16% alkali amount, 5:1 liquid ratio, cook at 170°C for 60min, filter, and wash with water;

[0032] (3) Bleaching: Add water and diethyltriaminepentaacetic acid (DTPA), pretreat for 30 minutes under the conditions of DTPA dosage 0.5%, slurry concentration 15%, temperature 40°C, pH 3, filter, and wash with water; Then at an oxygen pressure of 0.8MPa, add water, H 2 o 2 The dosage is 3%, the dosage of NaOH is 4%, the temperature is 80°C, MgSO 4 Dosage 0.4%, Na 2 SiO 3 Consumption of 3%, pulp concent...

Embodiment 1

[0038] Weigh 1.0 g of the NCC prepared above and dissolve it in 49.00 g of water to form a nanocrystalline cellulose solution with a mass fraction of 2%. This solution is treated with an ultrasonic cell pulverizer at an output power of 720w for 20 minutes, and then 4.40 g of water is replenished. , constant temperature at 50°C, stirring at a speed of 300r / min, adding sucrose three times, adding once every 10min, adding 20.18g each time, continuing to stir, adding 2.00g of Monascus Red when the solution becomes milky white, increasing the speed to 500r / min After stirring for 30 minutes, add 0.80 g of xanthan gum, stir for 30 minutes at a speed of 800 r / min, and finally add 42.72 g of soybean oil, and at the same time add absolute ethanol for defoaming, and stir for 30 minutes at a speed of 750 r / min to obtain edibility ink. According to GB / T 19468-2004, the ink printing quality index L * 、a * and b *Test; the color strength defined in 4.18 of GB / T 15962-1995 (using reflectio...

Embodiment 2

[0040] Weigh 0.75g of the NCC prepared above and dissolve in 49.25g of water to make a nanocrystalline cellulose solution with a mass fraction of 1.5%. This solution is treated with an ultrasonic cell pulverizer at an output power of 720w for 20min, and 4.15g of water is replenished. Constant temperature at 50°C, stirring at a speed of 300r / min, adding sucrose three times, adding once every 10min, adding 20.18g each time, continuing to stir, adding 2.00g of Monascus Red when the solution turns milky white, increasing the speed to 500r / min After stirring for 30 minutes, add 0.80 g of xanthan gum, stir for 30 minutes at a speed of 800 r / min, and finally add 42.72 g of soybean oil, and at the same time add absolute ethanol for defoaming, and stir for 30 minutes at a speed of 750 r / min to obtain an edible ink . According to GB / T 19468-2004, the ink printing quality index L * 、a * and b * Test; the color strength defined in 4.18 of GB / T 15962-1995 (using reflection densitometer ...

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Abstract

The invention discloses edible nanocrystal cellulose ink and a preparation method thereof. The preparation method of the edible nanocrystal cellulose ink comprises the steps that nanocrystal cellulose is mixed with water, ultrasonic treatment is performed, the water, a sweetening agent, coloring materials, a thickening agent and connecting materials are added in batches under the constant temperature and stirring conditions, and then the edible nanocrystal cellulose ink is prepared, wherein the nanocrystal cellulose is selected from natural plant fiber. According to the edible nanocrystal cellulose ink and the preparation method thereof, the nanocrystal cellulose is adopted to prepare the edible ink, the fibrous components are added in the ink, functionalization is achieved, the health care function is achieved, and meanwhile the color and luster of the edible ink is enhanced; especially, if the nanocrystal cellulose is selected from agricultural wastes (such as corn stalks, wheat straw and rice straw), recycling of the agricultural wastes is facilitated. The edible nanocrystal cellulose ink has the advantages of being environmentally friendly, free of public hazards, good in color and luster and the like and can be applied to the fields of baby food, drugs, edible packaging materials and the like.

Description

[0001] technology neighborhood [0002] The invention relates to an edible ink and a preparation method thereof, in particular to a method for preparing edible ink with nanocrystalline cellulose as one of the ingredients. Background technique [0003] As the main coloring substance, printing ink plays an important role in the printing and packaging industry. However, some traditional ink components contain some harmful substances that are very harmful to the human body. For example, solvent-based inks that are widely used in the soft plastic packaging and printing industry contain volatile carcinogens, especially when printing such inks on tobacco and alcohol packaging. , edible packaging materials, food, medicine and children's toys and other products, will directly affect human health. Although scientists are now turning their research direction to environmentally friendly inks that do not contain harmful substances, such as water-based UV inks, this ink itself cannot be ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/14
CPCC09D11/14
Inventor 李海明王安郭延柱马明帅周景辉孙广卫毕佳捷
Owner DALIAN POLYTECHNIC UNIVERSITY
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