Preparation process of lotus leaf extract

A technology of lotus leaf extract and preparation process, applied in the field of lotus leaf extract, can solve the problems of low production efficiency, cumbersome process steps and the like, and achieve the effects of stable quality and simple production process.

Inactive Publication Date: 2013-09-11
张娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lotus leaf extraction process in the prior art has low production efficiency an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of preparation technology from lotus leaf extract of the present invention comprises the following steps:

[0018] a: Prepare lotus leaves as raw materials, wash them, and dry them for 30 minutes at 80°C. The dried lotus leaves are reflux extracted with 60% ethanol for 4 hours, and the number of extractions is 4 times. The mass ratio is 1:20;

[0019] b: Combine the extracts obtained in step a, filter, let stand for 20 minutes, filter the lotus leaf residue, recover ethanol to obtain the primary extract;

[0020] c: concentrating the initial extract obtained in step b to 1 / 3 of the original volume under reduced pressure;

[0021] d: adding antioxidant vitamin A to the concentrated primary extract obtained in step c, the mass percentage of antioxidant vitamin A and the concentrated primary extract is 0.05%, to obtain a crude extract;

[0022] e: The crude extract obtained in step d is concentrated under reduced pressure to 1 / 5 of the original volume to obtain th...

Embodiment 2

[0025] A kind of preparation technology from lotus leaf extract of the present invention comprises the following steps:

[0026] a: Prepare lotus leaves as raw materials, wash them, and dry them for 25 minutes at a temperature of 90°C. The dried lotus leaves are reflux extracted with 65% ethanol for 3.5 hours, and the number of extractions is 3 times. The mass ratio is 1:25;

[0027] b: Combine the extracts obtained in step a, filter, let stand for 25 minutes, filter the lotus leaf residue, recover ethanol to obtain the primary extract;

[0028] c: concentrating the initial extract obtained in step b to 5 / 12 of the original volume under reduced pressure;

[0029] d: adding antioxidant vitamin C to the concentrated primary extract obtained in step c, the mass percentage of antioxidant vitamin C and the concentrated primary extract is 0.08%, to obtain a crude extract;

[0030] e: The crude extract obtained in step d is concentrated under reduced pressure to 1 / 5 of the original...

Embodiment 3

[0033] A kind of preparation technology from lotus leaf extract of the present invention comprises the following steps:

[0034] a: Prepare lotus leaves as raw materials, wash them, and dry them at 100°C for 20 minutes. The dried lotus leaves are reflux extracted with 70% ethanol for 3 hours, and the number of extractions is 2 times. The mass ratio is 1:30;

[0035] b: Combine the extracts obtained in step a, filter, let stand for 30 minutes, filter the lotus leaf residue, recover ethanol to obtain the primary extract;

[0036] c: concentrating the primary extract obtained in step b to 1 / 2 of the original volume under reduced pressure;

[0037] d: add antioxidant carotenoids to the concentrated primary extract obtained in step c, the mass percentage of antioxidant carotenoids and the concentrated primary extract is 0.1%, to obtain a crude extract;

[0038] e: The crude extract obtained in step d is concentrated under reduced pressure to 1 / 4 of the original volume to obtain t...

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PUM

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Abstract

The invention discloses a preparation process of a lotus leaf extract. The process is characterized by comprising the following steps: a, preparing raw material lotus leaves, cleaning the lotus leaves and drying, carrying out reflux extraction for 3-4 hours for the dried lotus leaves by 60-70% of ethanol by 2-4 times; b, combining the extraction liquors obtained in the step a, filtering, standing for 20-30 minutes, filtering the lotus leaf residue, and recovering ethanol to obtain a primary extract; c, concentrating the primary extract obtained by the step b to 1/3-1/2 of original volume; d, adding an antioxidant into the concentrated primary extract obtained in the step c to obtain a coarse extract; e, concentrating the coarse extract obtained by the step d to 1/5-1/4 of original volume to obtain general flavone of the lotus leaf extract. The method provided by the invention has the advantages that the production process flow is simple and convenient, the quality is stable, the effective components are stored, and the extract general flavone cannot only be used as a raw material medicine for cardiovascular diseases, but also applied to functional foods, health-care foods and beverages widely to meet the demand of people.

Description

technical field [0001] The present invention relates to lotus leaf extract, in particular to a preparation process from lotus leaf extract. Background technique [0002] Lotus leaf is the dry leaf of lotus, a plant of the water lily family. Lotus leaf is a food with both medicine and food. The flavonoids rich in lotus leaf are the scavenger of most oxygen free radicals, and have antagonism effect on experimental myocardial infarction; it has protective effect on acute myocardial ischemia; Coronary heart disease, high blood pressure, etc. have significant effects; it also plays an important role in reducing diastolic blood pressure, preventing arrhythmia, cardiovascular disease, etc. Therefore, lotus leaf flavonoids are a class of extremely valuable and undeveloped substances. It can also be widely used in functional food, health food and beverage. The lotus leaf extraction process in the prior art has low production efficiency and cumbersome process steps, which cannot mee...

Claims

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Application Information

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IPC IPC(8): A61K36/62A23L1/29A23L2/52A23L33/00
Inventor 张娟
Owner 张娟
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