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Eucalyptus leaf polyphenol feed additive for improving quality of duck meat and preparation method thereof

A technology of feed additive and eucalyptus leaf, which is applied in the field of natural plant feed additives, can solve the problems of not involving the purification process of eucalyptus leaf polyphenols and the low content of eucalyptus leaf polyphenols, and achieve the improvement of duck meat quality, high extraction rate and high content , the effect of strong industrial application prospects

Inactive Publication Date: 2018-11-06
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] "A plant extract additive for improving meat quality and its preparation method and application" disclosed in a Chinese patent application (CN201710886845.9), prepared a composition containing eucalyptus leaf extract, perilla seed extract, Eucommia extract and Yeast extract and other compound components, the application of plant extract additives for improving meat quality in pig feed, poultry feed or fish feed, does not involve the application of eucalyptus polyphenols in duck feed additives
This patent uses eucalyptus leaf extract as a feed additive for livestock and poultry, and the polyphenol content of eucalyptus leaf is low, and does not involve the purification process of eucalyptus leaf polyphenols, and the application of eucalyptus leaf polyphenols to duck feed additives remains to be studied

Method used

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  • Eucalyptus leaf polyphenol feed additive for improving quality of duck meat and preparation method thereof
  • Eucalyptus leaf polyphenol feed additive for improving quality of duck meat and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The eucalyptus leaf raw material was frozen and crushed at low temperature, crushed to 40 mesh, 10kg of the crushed raw material was weighed, put into a continuous phase change extraction kettle and sealed for extraction, the extraction pressure was 1 MPa, the extraction temperature was 70°C, and the analysis temperature was 75°C. The time is 100min, and 60% ethanol is used as the extractant to collect the eucalyptus leaf extract. The eucalyptus leaf extract is concentrated under reduced pressure, filtered to obtain the eucalyptus leaf water extract, and then vacuum freeze-dried to obtain the eucalyptus leaf crude extract. The crude extract of eucalyptus leaves was passed through a 200-mesh silica gel column, and the flow rate of elution was 40ml / min. Gradient elution was carried out with ethanol and ethyl acetate. The volume ratio of ethanol and ethyl acetate was 100:0, 85:15, 65:35, 55:45, 45:55, 35:65, 15:85, 5:95, vacuum concentrated ethanol and ethyl acetate volume...

Embodiment 2

[0027] The eucalyptus leaf raw material was frozen and crushed at low temperature, crushed to 60 mesh, 20kg of the crushed raw material was weighed, put into a continuous phase-change extraction kettle for sealed extraction, the extraction pressure was 0.8 MPa, the extraction temperature was 60°C, and the analysis temperature was 65°C. The time is 100min, and 80% ethanol is used as the extractant to collect the eucalyptus leaf extract. The eucalyptus leaf extract is concentrated under reduced pressure, filtered to obtain the eucalyptus leaf water extract, and then vacuum freeze-dried to obtain the eucalyptus leaf crude extract. The crude extract of eucalyptus leaves was passed through a 200-mesh silica gel column, and the flow rate of elution was 30mL / min. Gradient elution was carried out with ethanol and ethyl acetate. The volume ratio of ethanol and ethyl acetate was 100:0, 85:15, 65:35, 55:45, 45:55, 35:65, 15:85, 5:95, vacuum concentrated ethanol and ethyl acetate volume r...

Embodiment 3

[0029] The eucalyptus leaf raw material was crushed to 55 mesh by low-temperature freezing, and 10kg of the crushed raw material was weighed, put into a continuous phase-change extraction kettle for sealed extraction, the extraction pressure was 0.8 MPa, the extraction temperature was 65°C, and the analysis temperature was 75°C. The time is 80min, and 90% ethanol is used as the extractant to collect the eucalyptus leaf extract. The eucalyptus leaf extract is concentrated under reduced pressure, filtered to obtain the eucalyptus leaf water extract, and then vacuum freeze-dried to obtain the eucalyptus leaf crude extract. The eucalyptus leaf crude extract was passed through a macroporous resin column at a flow rate of 30mL / min, and gradient elution was carried out with ethanol and ethyl acetate, and the volume ratios of ethanol and ethyl acetate were 100:0, 85:15, 65:35, 55:45, 45:55, 35:65, 15:85, 5:95, vacuum concentrated ethanol and ethyl acetate volume ratio 65:35, 45:55 elu...

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Abstract

The invention provides a eucalyptus leaf polyphenol feed additive for improving the quality of duck meat. In order to prepare high-purity eucalyptus leaf polyphenol from eucalyptus leaves, the preparation method comprises the following steps: subjecting a eucalyptus leaf raw material to low-temperature freezing and crushing, putting the crushed raw material into a continuous phase-change extraction kettle, conducting sealed extraction, collecting a eucalyptus leaf extractive liquid, conducting concentration under reduced pressure, conducting centrifugal filtration to obtain a eucalyptus leaf water extract, then conducting vacuum freeze-drying to obtain a eucalyptus leaf crude extract, carrying out column chromatography separation, carrying out gradient elution by using ethanol and ethyl acetate as eluting agents, collecting an eluent containing eucalyptus leaf polyphenol, subjecting the eluent to vacuum concentration, and then conducting vacuum drying to obtain the eucalyptus leaf polyphenol. According to the present invention, the extraction rate and the purity of the effective active components of the eucalyptus leaf polyphenol such as oenothein B, 1, 2, 3, 4, 6-pentagalloylglucose, pedunculagin and 5-methoxy furfural are high, and the plant natural feed additive can be used for improving the meat quality of meat ducks.

Description

technical field [0001] The invention relates to a natural plant feed additive, in particular to a eucalyptus polyphenol feed additive for improving the quality of duck meat, a preparation method and application thereof. Background technique [0002] With the development of the feed additive industry, a series of hazards caused by chemical synthesis of antibiotics has become a consensus, such as drug resistance, drug residues and teratogenicity. consensus. Now, in order to improve the quality of meat, the requirements for feed are getting higher and higher. Researchers are committed to developing new natural additives to meet people's needs for high-quality animal husbandry. Chinese herbal feed additives are designed to meet people's demand for high-quality livestock products. Chinese herbal medicine feed additives are gradually favored by people in modern animal husbandry because of their characteristics of no residue and strong effect of improving meat quality. It is a t...

Claims

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Application Information

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IPC IPC(8): A23K10/30A23K50/75
CPCA23K10/30A23K50/75
Inventor 冯孔龙曹庸李伟陈运娇杜洁戴伟杰李俊
Owner SOUTH CHINA AGRI UNIV