Environmentally-friendly Setaria viridis softening agent preparation method
The technology of foxtail grass and softener is applied in the field of preparation of environment-friendly foxtail grass softener, which can solve the problems of affecting the utilization of light energy and photosynthesis of crops, restricting the growth of crops, interference and the like, and achieves improved utilization value, good softening effect and good softness. Effect
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Embodiment 1
[0020] A preparation method of an environment-friendly foxtail softener, the ingredients are calculated in parts by weight, comprising the following steps:
[0021] (1) Wash the foxtail, dry it, and crush it through a 100-mesh sieve;
[0022] (2) Add petroleum ether and extract for 2 hours at a temperature of 80°C, wherein the ratio of foxtail and petroleum ether is 1g / 9mL;
[0023] (3) Filtration and distillation to remove petroleum ether to obtain extract A and filter residue;
[0024] (4) Dissolve 7 parts of NaOH in 20 parts of distilled water, add 50 parts of absolute ethanol, transfer to a three-necked flask, drop 20 parts of extract A into the three-necked flask through a separating funnel at a constant speed, and mechanically stir evenly. Drop reaction at 70°C for 1.5h and keep warm for 2h;
[0025] (5) Cool to room temperature, add hydrochloric acid dropwise to pH 3, continue to keep warm at room temperature for 1 hour, let stand to separate layers, take the upper la...
Embodiment 2
[0032] A preparation method of an environment-friendly foxtail softener, the ingredients are calculated in parts by weight, comprising the following steps:
[0033] (1) Wash the foxtail, dry it, and crush it through a 100-mesh sieve;
[0034] (2) Add petroleum ether and extract for 2.5 hours at a temperature of 85°C, wherein the ratio of foxtail and petroleum ether is 1g / 9mL;
[0035] (3) Filtration and distillation to remove petroleum ether to obtain extract A and filter residue;
[0036] (4) Dissolve 7.5 parts of NaOH in 25 parts of distilled water, add 60 parts of absolute ethanol, transfer to a three-necked flask, drop 25 parts of extract A into the three-necked flask through a separatory funnel at a constant speed, mechanically stir evenly, Drop reaction at 75°C for 1.5h and keep warm for 2h;
[0037] (5) Cool to room temperature, add hydrochloric acid dropwise to pH 3.5, continue to keep warm at room temperature for 1 hour, let stand to separate layers, take the upper ...
Embodiment 3
[0044] A preparation method of an environment-friendly foxtail softener, the ingredients are calculated in parts by weight, comprising the following steps:
[0045] (1) Wash the foxtail, dry it, and crush it through a 100-mesh sieve;
[0046] (2) Add petroleum ether and extract for 3 hours at a temperature of 90°C, wherein the ratio of foxtail and petroleum ether is 1g / 9mL;
[0047] (3) Filtration and distillation to remove petroleum ether to obtain extract A and filter residue;
[0048] (4) Dissolve 8 parts of NaOH in 30 parts of distilled water, add 70 parts of absolute ethanol, transfer to a three-necked flask, drop 30 parts of extract A into the three-necked flask through a separatory funnel at a constant speed, and mechanically stir evenly. Drop reaction at 75°C for 2 hours and keep warm for 2 hours;
[0049] (5) Cool to room temperature, add hydrochloric acid dropwise to pH 4, continue to keep warm at room temperature for 1 hour, let stand to separate layers, take the ...
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