Cyclocarya paliurus leaf instant powder and preparation method thereof
A technology of instant powder and willow leaves, which is applied in the fields of medicine, health food, and food, can solve problems such as easy turbidity and precipitation of tea soup, poor product cold solubility, and destruction of active ingredients, and achieve broad market demand prospects, remove bad odors, and brew Easy to drink and carry
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[0044] ②Preparation of solution
[0045] Preparation of reference substance solution: Take an appropriate amount of isoquercitrin reference substance, weigh it accurately, add methanol to make a solution containing 235.60 μg per 1 ml, shake well, and obtain.
[0046] (2) Determination of dry paste rate
[0047] Precisely absorb 25ml of the extract, place it in an evaporating dish that has been dried to constant weight, evaporate to dryness in a water bath, dry to constant weight at 105°C, transfer to a desiccator to cool for 30 minutes, quickly and accurately weigh the weight, and calculate the dry paste rate.
[0048]
[0049](3) Sensory evaluation investigation: At room temperature, initially inspect sensory indicators such as color, flavor, and mouthfeel.
[0050] 3. Experimental methods and results
[0051] (1) Inspection of extraction methods
[0052] Take 4 parts of Cyclocarya paliurus leaves, each about 50g, accurately weighed, add 500ml of water to extract, and u...
Embodiment 1
[0095] A preparation method of Cyclocarya paliurus leaf instant powder, comprising the following steps:
[0096] R1. remove impurities from Cyclocarya paliurus leaves, wash and dry at 50°C;
[0097] R2. The dried Cyclocarya paliurus leaves are stirred and extracted, the amount of leaves thrown is 100kg, 800kg of water is added (the ratio of solid to liquid is 1:8), heated to 50°C for leaching 3 times, each time of leaching is 1h, use The filter cloth is subjected to primary filtration, combined to obtain the extract;
[0098] R3. Pass the extract solution through a ceramic membrane filter with a membrane pore size of 200 μm for microfiltration, the filtration pressure is 0.5 MPa, and the filtration temperature is 35 ° C;
[0099] R4. Concentrate the filtrate through a combined membrane concentration Chinese-style equipment with a membrane pore size of 200nm, the concentration pressure is 12MPa, the concentration temperature is 26°C, and the solid content of the obtained conce...
Embodiment 2
[0104] A preparation method of Cyclocarya paliurus leaf instant powder, comprising the following steps:
[0105] R1. remove impurities from Cyclocarya paliurus leaves, after washing, dry at 80°C;
[0106] R2. Stir and extract the dried Cyclocarya paliurus leaves, add 100kg of leaves, add 1400kg of water (the ratio of solid to liquid is 1:14), heat to 70°C for leaching once, the leaching time is 3h, and use a filter cloth Carry out preliminary filtration, merge, obtain extract;
[0107] R3. Pass the extract solution through a ceramic membrane filter with a membrane pore size of 200 μm for microfiltration, with a filtration pressure of 2.5 MPa and a filtration temperature of 55 °C;
[0108] R4. Concentrate the filtrate through a combined membrane concentration Chinese-style equipment with a membrane pore size of 200nm, the concentration pressure is 17MPa, the concentration temperature is 39°C, and the solid content of the obtained concentrated solution for the first time is 2.8...
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