Method for extracting natural activated products from orange drops

A technology of citrus and fruit drop, applied in chemical instruments and methods, preparation of organic compounds, sugar derivatives, etc., can solve the problems of insufficient utilization and waste of other components, and achieve the effect of improving the value of comprehensive utilization

Inactive Publication Date: 2012-05-09
HUAZHONG AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology only studies the use of a certain component in the fallen fruit, and the other components in the fallen fruit are not fully utilized, causing a lot of waste

Method used

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  • Method for extracting natural activated products from orange drops
  • Method for extracting natural activated products from orange drops
  • Method for extracting natural activated products from orange drops

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Experimental materials: The first batch of crushed navel oranges (the variety is Pengna, a high-quality navel orange variety widely promoted in southern China, and the fallen fruit of Pengna navel oranges came from the citrus garden of Wangchunhua Juice Co., Ltd., Songzi City, Hubei Province) was dried at 80°C. Physiological shedding and fruit of the second physiological shedding.

[0033] 2. Experimental method

[0034] (1) Clean the fallen navel oranges, dry them at 80° C., and then pulverize them through a 50-mesh analytical sieve to obtain pretreated citrus fallen fruits powder;

[0035] (2) Take by weighing 3.0g pretreated orange fruit drop powder, place in the Soxhlet extractor, connect the evaporating flask of constant weight, add sherwood oil, the weight / volume ratio of pretreatment orange fruit drop powder and petroleum ether is 1: 40. Heat and reflux in a water bath at 40-50°C for 8 hours, evaporate the petroleum ether and then dry at 100-105°C to obtain def...

Embodiment 2

[0041] Follow the basic steps of Example 1. Navel orange source is with embodiment 1.

[0042] (1) Clean the fallen navel oranges, dry them at 80° C., and then pulverize them through a 20-mesh analytical sieve to obtain pretreated citrus fallen fruits powder;

[0043] (2) Take by weighing 3.0g pretreated orange fruit drop powder, place in the Soxhlet extractor, connect the evaporating flask of constant weight, add sherwood oil, the weight / volume ratio of pretreatment orange fruit drop powder and petroleum ether is 1: 40. Heat and reflux in a water bath at 40-50°C for 8 hours, evaporate the petroleum ether and then dry at 100-105°C to obtain defatted citrus fruit drop powder;

[0044] (3) The defatted citrus fruit drop powder obtained in step (2) and ethanol are 1: 10 by weight / volume ratio, and the ethanol concentration is 90%, reflux extraction at 40 DEG C for 1-3h, filter, and the filtrate is for subsequent use; the filter residue is reused Repeat the extraction twice by t...

Embodiment 3

[0049] Follow the basic steps of Example 1. Navel orange source is with embodiment 1.

[0050] (1) Clean the fallen citrus fruits, dry them at 80° C., and then pulverize them through a 100-mesh analytical sieve to obtain pretreated citrus fallen fruits powder;

[0051] (2) Take by weighing 2.0-3.0g pretreated citrus fruit drop powder, place in the Soxhlet extractor, connect the evaporation flask with constant weight, add sherwood oil, the weight / volume ratio of pretreatment citrus fruit drop powder and sherwood oil is 1:40, heat and reflux in a water bath at 50°C for 8 hours, evaporate the petroleum ether and then dry at 100-105°C to obtain defatted citrus fruit drop powder;

[0052] (3) The weight / volume ratio of the degreased citrus fruit drop powder obtained in step (2) and ethanol is 1:50, the ethanol concentration is 50%, reflux extraction at 80°C for 1-3h, filter, and the filtrate is for subsequent use; the filter residue is reused Repeat the extraction twice by the ab...

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Abstract

The invention belongs to the technical field of natural product extraction from oranges, and specifically relates to a method for continuously extracting natural activated products such as synephrine, hesperidin and limonin from physiological orange drops. The method comprises the following steps: using orange drops which are dried and crushed into 20-100 meshes as raw materials, adding 50-90% ethanol according to a weight/volume ratio of (1:10)-(1:50), extracting under reflux at 40-80 DEG C for 1-3 hours, filtering, recovering ethanol from the filtrate, and obtaining a concentrated solution for later use; adding a small number of chloroform crystals into the concentrated solution, adding water for layering, directly heating the water layer to 75 DEG C, filtering, adding 0.1mol/L hydrochloric acid to regulate the pH value to 3-4, and precipitating to obtain a hesperidin crude product; carrying out spin drying on the obtained chloroform layer solution, adding a right number of acetone crystals, and carrying out vacuum drying to obtain a synephrine crude product; and carrying out spin drying on the acetone solution after the crystal filtration, adding dichloromethane for dissolution, filtering, adding isopropanol into the solution according to a volume ratio of 1:2, and crystallizing to obtain a limonin crude product. Qualitative and quantitative analysis are carried out on the three resulting activated products through high-pressure liquid chromatography, and the result shows that the hesperidin has the highest purity (91.41%).

Description

technical field [0001] The invention belongs to the technical field of plant natural product extraction, and in particular relates to a method for continuously extracting natural active products such as synephrine, hesperidin and limonin from citrus physiological fruit drop. Background technique [0002] Citrus belongs to Rutaceae (Citrus) plant in taxonomy, and is the largest fruit in the world. In 2005, the world's citrus output reached more than 100 million tons, and China was about 15 million tons, second only to Brazil and China. United States (Ye Xinggan, Citrus Processing and Comprehensive Utilization. Beijing: China Light Industry Press, 2005, 12-15; Li Jianmin et al., Combined extraction of essential oil, pigment, pectin and hesperidin from citrus peel. Biomass Chemical Engineering, 2007a, 41(1):22-24). my country is rich in citrus germplasm resources and is the origin of many citrus varieties in the world. Many citrus varieties from all over the world were origina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C215/60C07C213/10C07H17/07C07H1/08C07J73/00
Inventor 徐晓云潘思轶徐永霞毛华荣
Owner HUAZHONG AGRI UNIV
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