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Process for extracting flavonoids from shaddock peel

An extraction process and flavonoid technology, applied in the field of food processing, can solve the problems of extraction, purification and functional activity of flavonoid functional components of pomelo peel, long reaction time for reflux extraction, long extraction process time, etc., so as to shorten the extraction time and avoid the Waste of resources, the effect of expanding the application market

Pending Publication Date: 2021-07-13
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are currently many studies on flavonoids in traditional Chinese medicinal materials such as tangerine peel and Huajuhong, but there is no research on the extraction, purification and functional activity of flavonoids in pomelo peel.
In addition, in the extraction of flavonoids from other products, there are also disadvantages such as the need to adjust the pH value, the operation steps are cumbersome), the concentration after purification is low, or the extraction process time is longer due to long water bath time and long reflux extraction reaction time. ) disadvantages and so on

Method used

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  • Process for extracting flavonoids from shaddock peel
  • Process for extracting flavonoids from shaddock peel
  • Process for extracting flavonoids from shaddock peel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 grapefruit peel flavonoid extraction process

[0037] The grapefruit peel flavonoid extraction process according to one embodiment of the present invention comprises the following steps:

[0038] 1. Choose grapefruit peel

[0039] Select fresh grapefruits with no obvious pests and diseases on the surface and no mechanical damage, wash them with water, dry them naturally, cut off the outer skin of the grapefruit, that is, the outer skin including the oil bubble layer and the sponge layer, and then cut the outer skin into approx. 5-10cm long, 1-2cm wide, 0.5-1.0cm thick slices, spare. As an example, in the experiment, the pomelo used was Dapu County white-fleshed honey pomelo, but not limited thereto, and other pomelo, such as Shatian pomelo, Changshan pomelo, Yuhuan pomelo, etc. can also be used.

[0040] 2. Preparation of pomelo powder

[0041] Put the pomelo peel prepared in step 1 into a heat pump drying oven, dry at 50°C-60°C until constant weight, ta...

Embodiment 2

[0052] Example 2 Extraction process optimization of pomelo peel flavonoids

[0053] 1. Selection of pretreatment methods for pomelo peel powder

[0054] The same amount of pomelo peel powder was dried by hot air, heat pump and vacuum freeze-drying, and the effects of the three treatments on some processing characteristics and functional component content of pomelo peel powder were compared. The final data are shown in Table 1 and Table 2 below.

[0055] Table 1 Processing characteristics of pomelo peel powder under different drying methods

[0056]

[0057] Note: Different letters indicate whether the difference is significant (P<0.05), the same below.

[0058] Table 2. Contents of functional components of pomelo peel powder under different drying methods

[0059]

[0060] From the above experimental results, it can be seen that there are significant differences in various aspects of the pomelo peel powder obtained by drying in different ways, among which the pomelo p...

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Abstract

The invention provides a process for extracting flavonoids from shaddock peel. The process comprises the following steps: drying the shaddock peel, preparing shaddock peel powder, adding ethanol to obtain a shaddock peel powder solution, carrying out ultrasonic treatment, performing extraction, suction filtration and separation on the shaddock peel powder solution by using an ultrasonic instrument to obtain a flavonoid solution A, performing secondary extraction, suction filtration and separation on the shaddock peel powder solution to obtain a flavonoid solution B, mixing the flavonoid solution A and the flavonoid solution B to obtain a mixed flavonoid solution, performing rotary evaporation on the mixed flavonoid solution, performing freeze drying to obtain crude flavonoids, and purifying the crude flavonoids by using resin to obtain purified shaddock peel flavonoids. According to the process for extracting the flavonoids from the shaddock peel, enzyme does not need to be used for auxiliary extraction, so a pH value does not need to be adjusted, operation steps are simple, and compared with the prior art, extraction time can be greatly shortened.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a process for extracting flavonoids from pomelo peel. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] my country is a big producer of pomelo. The planting area of ​​honey pomelo in Dapu County, Meizhou City, Guangdong Province alone reaches 220,000 mu, and the yield per mu can reach 2500-3000kg during the peak production period. But the pomelo of my country is based on fresh food always, that is, people eat the pulp of pomelo, and the pomelo peel is thrown away, and this has just caused the great waste of pomelo peel resource. Grapefruit peel contains flavonoids, dietary fiber, polysaccharides, pectin and other functional components. Among them, flavonoids have various physiological functions such as loweri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07G99/00A23L33/105
CPCA23L33/105A23V2002/00C07G99/00A23V2200/30A23V2250/21162
Inventor 吕建秋胡安阳李翠芬王泳欣叶茂林胡泽中邓修文梁诗华缪韩彬
Owner SOUTH CHINA AGRI UNIV
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