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Method for extracting phenolic compounds from coir

A technology of phenolic compounds and coir, which is applied in the field of substance extraction, can solve the problems of low extraction rate and incomplete dissolution of internal active substances.

Active Publication Date: 2021-09-07
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main method of extracting natural active substances from coconut shell is ultrasonic-assisted extraction, but ultrasonic is not enough to fully dissolve the internal active substances, and the extraction rate is low

Method used

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  • Method for extracting phenolic compounds from coir
  • Method for extracting phenolic compounds from coir
  • Method for extracting phenolic compounds from coir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Weigh 1g of coconut powder (through a 60-mesh sieve), add 5mL of acetone aqueous solution with a volume fraction of 60% according to the ratio of material to liquid at 1:5g / mL, and use the Box-Behnken model to carry out the design of the response surface optimization experiment. Power (A), ultrasonic temperature (B) and ultrasonic time (C) were three factors, and a three-factor three-level response surface design was carried out. The TFC in the coconut coat was used as the response value. The design of each factor and level is shown in Table 1.

[0080] According to the optimized conditions obtained from the single factor experiment, a three-factor and three-level response surface analysis was carried out, and a total of 17 experiments were carried out, including 5 center-point experiments. The specific results are shown in Table 1.

[0081] Table 1 Response surface experiment design and results

[0082]

[0083] Multiple regression fitting was carried out by Design-...

Embodiment 2

[0091] Weigh 1g of coconut powder (through a 60 mesh sieve), add 5mL of acetone aqueous solution with a volume fraction of 60% according to the ratio of material to liquid at 1:5g / mL; in this embodiment, the optimal process is selected on the basis of the response surface results (ultrasonic power 225W, ultrasonic temperature 80°C, ultrasonic time 80min) for ultrasonic extraction and high-speed homogenization treatment (10000rpm / 0min, 10000rpm / 2.5min, 10000rpm / 5min, 10000rpm / 7.5min, 10000rpm / 10min); The extraction system was centrifuged at 4° C. and 4000 rpm for 5 minutes to obtain a supernatant, and the residue was extracted twice under the same conditions to obtain a supernatant and a filter residue.

[0092] Determination of total flavonoid content and total phenol content in the obtained supernatant respectively, the results are as follows: Figure 8 and 9 As shown, among them: "Quality" means that only high-speed homogenization is performed; "Jun+Super" means high-speed ...

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Abstract

The invention belongs to the technical field of substance extraction, and provides a method for extracting phenolic compounds from coir. According to the method, an acetone aqueous solution with the volume fraction of 50-70% is used as an extracting agent, ultrasonic extraction is carried out on the coir under the conditions that the material-liquid ratio is 1: (4.5-5.5) g / mL, the power is 220-230 W and the temperature is 75-85 DEG C, and then high-speed homogenization treatment is carried out for 4-6 min at the speed of 8000-12000 rpm, so that the extraction rate of the phenolic compounds is increased. According to the embodiment of the invention, the extraction content of total flavonoids in the method reaches 551.99+ / -12.69 mg Rutin / g dw, which is higher than that in a single mode of solvent extraction (266.99+ / -4.45 mg Rutin / g dw), ultrasonic extraction (408.56+ / -18.66 mg Rutin / g dw) and high-speed homogenization (309.48+ / -7.85 mg Rutin / g dw).

Description

technical field [0001] The invention relates to the technical field of substance extraction, in particular to a method for extracting phenolic compounds from coconut shells. Background technique [0002] Coconut (Cocos nucifera L.), which belongs to the genus Cocos in the palm family, is an important monocotyledonous plant that grows widely in tropical and subtropical regions. From outside to inside, the fruit of coconut is pericarp, seed coat, coconut meat (solid endosperm), coconut water (liquid endosperm) and embryo. The exocarp is the thin, smooth outer skin that forms the coconut, the mesocarp is the large, fibrous central region (commonly known as the coir) that forms the outer shell, and the endocarp is the hard shell (commonly known as the coir) that forms the interior of the coconut. In 2019, the global coconut production reached 62.057 million tons. Assuming that coconut peels account for 50% of the whole fruit mass, about 31.0285 million tons of coconut peels are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/889A61P31/04A61P31/12A61P39/06A61P35/00A61K131/00
CPCA61K36/889A61P31/04A61P31/12A61P39/06A61P35/00A61K2236/333A61K2236/53
Inventor 杨静李娜娜王春雨蒋汇川刘永平
Owner ZHONGBEI UNIV