Method for extracting uranidin from physalis pubescens fruit

An extraction method, a technology of physalis pulp, which is applied in the field of yellow pigment extraction, can solve the problems that supercritical extraction cannot be carried out in industrialized large-scale production, yellow pigment is easy to oxidize and decompose, and the consumption of organic solvents is large, so as to increase solvent penetration, The effect of short extraction time and low consumption of organic solvent

Inactive Publication Date: 2014-03-05
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low extraction rate, large consumption of organic solvent, time-consuming, easy oxidation and decomposition of yellow pigment in the extraction process and incapa

Method used

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specific Embodiment approach 1

[0015] Specific embodiment one: the extraction method of the yellow pigment in a kind of Physalis edulis fruit of this embodiment, carries out according to the following steps:

[0016] 1. Extract the fruit of Physalis edulis and use a juice extractor to squeeze the juice, then separate the dregs, and obtain the fruit pulp after filtering;

[0017] 2. Add an organic solvent with a pH value of 1.5 to 2.5 to the fruit pulp obtained in step 1 to carry out ultrasonic-assisted extraction. The extraction conditions are: in an ultrasonic cell pulverizer, perform ultrasonic treatment for 15-25 minutes with a power of 350-450W, and then Extract in a water bath at 38°C-42°C to obtain an extract; wherein, the volume ratio of fruit pulp to organic solvent is 1:9-11;

[0018] 3. Perform solvent recovery on the leachate obtained in step 2, and then concentrate by vacuum rotary evaporation at 0.09-0.1MPa, 45°C-55°C for 5-10min to obtain a crude extract;

[0019] 4. Place the crude extract o...

specific Embodiment approach 2

[0024] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the Physalis edulis fruit described in step 1 is a fresh fruit or a frozen-stored fruit, wherein the frozen-stored fruit needs to be placed at room temperature for 30 minutes to 2 hours before Proceed to juicing. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in Step 2, an organic solvent with a pH value of 2 is added to the pulp obtained in Step 1 for ultrasonic-assisted extraction. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for extracting uranidin from physalis pubescens fruit, and relates to a method for extracting uranidin, solving the problems that the conventional physalis pubescens uranidin extraction method is low in extraction rate and large in organic solvent consumption, a long time is needed, the uranidin is easy to oxidize and decompose in the extraction process, and industrial production cannot be achieved by means of supercritical extraction. The method disclosed by the invention comprises the following steps: firstly, juicing the physalis pubescens fruit; secondly, adding an organic solvent to perform ultrasonic-assisted extraction; thirdly, recycling and concentrating; fourthly, drying so as to obtain the uranidin. The method is high in extraction rate of the physalis pubescens uranidin in an ultrasonic extraction mode, the extraction rate is increased by 0.5-1.5% when being compared with an ordinary conventional ethanol leaching method, and moreover the extraction time is short, a small amount of the organic solvent is consumed, the condition is gentle, the extracted uranidin is not damaged, and theoretic basis is provided for industrial production of natural uranidin. The method is applied to extraction of uranidin in physalis pubescens fruit.

Description

technical field [0001] The invention relates to a method for extracting yellow pigment, in particular to a method for extracting yellow pigment in Physalis edulis fruit. Background technique [0002] Sour berry (commonly known as Huanggu Niang) is a local specialty fruit in Heilongjiang, with an annual output of 150,000 tons. In recent years, under the guidance of the development strategy of building "Eight Economic Zones" and implementing "Ten Projects", Heilongjiang Province has attached great importance to the development of the small berry industry and provided strong support from the perspectives of policies and funds, which has promoted the health and development of the berry industry. Sustainable development, nearly 70,000 hm per year 2 The growth rate continued to increase. Physalis is rich in yellow pigments, such as lutein and carotenoids, which can be used as natural pigments in food. Lutein is an antioxidant with excellent performance, stable coloring power, a...

Claims

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Application Information

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IPC IPC(8): A23L1/27A23L1/30A61K36/81A61K131/00A23L33/105
CPCA23L5/42A23V2002/00A61K9/19A61K36/81A61K2236/10A61K2236/30A61K2236/333C09B61/00A23V2200/044A23V2300/14A23V2300/48A23V2300/10
Inventor 李良洪瑞金宏伟
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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