Tobacco natural plant dye, preparation method, and application thereof
A technology for natural plant dyes and tobacco, applied in the field of tobacco natural plant dyes and their preparation, can solve problems such as no reports, and achieve the effects of good market prospects, high color fastness to rubbing, and improvement of body immunity
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Embodiment 1
[0041] (1) Wash 8g of fresh undried mature tobacco with amino acid-based surfactant to clean the impurities and dirt on the surface of the tobacco leaf, dry it, pulverize it with a pulverizer to form a 25-50 μm tobacco powder, and soak the tobacco powder in a pH value Soak in 8-9 enzyme-containing emulsion at 80-90°C for 150-180 minutes to remove part of the sugar and gum in the tobacco, take out, wash, filter and dry to obtain biologically pretreated tobacco powder.
[0042] (2) With the material-liquid ratio of 1g:80mL, add the biologically pretreated tobacco powder into the aqueous solution, soak for 2 hours for pretreatment, then add sodium bicarbonate to adjust the pH to 8, raise the temperature to 80°C, keep it warm for 180min, and filter to obtain Primary extract and filter residue.
[0043] (3) With the ratio of solid to liquid 1g:70mL, add the filter residue into the aqueous solution, soak for 2 hours for pretreatment, then add sodium bicarbonate to adjust the pH to 9...
Embodiment 2
[0048] (1) Wash 8g of fresh undried mature tobacco with amino acid-based surfactant to clean the impurities and dirt on the surface of the tobacco leaf, dry it in the air, pulverize it with a pulverizer to form 0.5-1 μm tobacco powder, and soak the tobacco powder in pH value Soak in 8-9 enzyme-containing emulsion at 80°C-90°C for 150-180min, remove part of the sugar and gum in the tobacco, take out, wash, filter and dry to obtain biologically pretreated tobacco powder.
[0049] (2) With a solid-liquid ratio of 1g:70mL, add the biologically pretreated tobacco powder into an aqueous solution or an ethanol aqueous solution with a volume ratio of 50%-75%, soak for 2 hours, and then add ethylenediamine to adjust the pH to 8 , heated up to 90°C, kept warm for 170min, and filtered to obtain primary extract and filter residue.
[0050] (3) With the ratio of solid to liquid 1g:70mL, add the filter residue into the aqueous solution, soak for 2 hours for pretreatment, then add sodium bic...
Embodiment 3
[0055] (1) Wash 8g of fresh undried mature tobacco with amino acid-based surfactant to clean the impurities and dirt on the surface of the tobacco leaf, dry it, pulverize it with a pulverizer to form a 25-50 μm tobacco powder, and soak the tobacco powder in a pH value Soak in 8-9 enzyme-containing emulsion at 80°C-90°C for 150-180min, remove part of the sugar and gum in the tobacco, take out, wash, filter and dry to obtain biologically pretreated tobacco powder.
[0056] (2) With a solid-liquid ratio of 1g:70mL, add the biologically pretreated tobacco powder into an aqueous ethanol solution with an ethanol content of 50%, soak for 2 hours, then add ethylenediamine to adjust the pH to 9, and heat up to 85°C , keep warm for 160min, and filter to obtain primary extract and filter residue.
[0057] (3) With the material-liquid ratio of 1g:80mL, add the filter residue to an ethanol aqueous solution with an ethanol content of 50%, soak for 2 hours, then add ethylenediamine to adjust...
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