Preparation process of chicken Eimeria tenella yolk antibody targeted sustained-release preparation
A kind of Emy ear ball and antibody targeting technology, which is applied in the direction of antibodies, anti-infective drugs, and medical preparations with non-active ingredients, etc., to avoid the use of weak specificity, improve pharmacokinetic characteristics, and reduce direct economic losses Effect
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Embodiment 1
[0038] Example 1. A preparation process for a targeted slow-release preparation of Eimeria tenella yolk antibody. The steps are: (1) Preparation, separation and purification of highly immune yolk antibody (IgY). The specific steps are: by giving Healthy Chicks Against Viruses E. tenella , use the chickens to subculture and amplify to obtain the antigen; then give the antigen orally to the healthy laying hens, immunize once every 8 days, and immunize three times in total, and collect the high-immunity eggs for the last immunization; separate the yolk from the high-immunity eggs to obtain the yolk stock solution; the yolk stock solution is used for pre-treatment Dilute with cold sterilized distilled water at a volume ratio of 1:6, adjust the pH to 4.8 with 0.1mol / L HCL, stir well, let stand at 4°C for 6h, centrifuge at 10,000r / min for 15min, and collect the supernatant as egg yolk water-soluble fraction (WFS ); using caprylic acid-cold ethanol extraction method or ammonium sulfa...
Embodiment 2
[0041] A preparation process for chicken Eimeria tenella yolk antibody targeted sustained-release preparation, the steps are: (1) preparation, separation and purification of highly immune yolk antibody (IgY), the specific steps are: challenge healthy chicks with the virus E. tenella , use the chickens to subculture and amplify to obtain the antigen; then give the antigen orally to the healthy laying hens, immunize once every 10 days, and immunize three times in total, and collect the highly immune eggs for the last immunization; separate the yolk from the highly immune eggs to obtain the yolk liquid; Dilute with cold sterilized distilled water at a volume ratio of 1:9, adjust the pH to 5.1 with 0.1mol / L HCL, stir well, let stand at 4°C for 8h, centrifuge at 10,000r / min for 20min, and collect the supernatant as egg yolk water-soluble fraction (WFS ); using caprylic acid-cold ethanol extraction method or ammonium sulfate secondary precipitation method to separate and extract IgY ...
Embodiment 3
[0044] A preparation process for chicken Eimeria tenella yolk antibody targeted sustained-release preparation, the steps are: (1) preparation, separation and purification of highly immune yolk antibody (IgY), the specific steps are: challenge healthy chicks with the virus E. tenella , use the chickens to subculture and amplify to obtain the antigen; then give the antigen orally to the healthy laying hens, and immunize once every 12 days, a total of 3 times of immunization, and collect the high-immune eggs for the last immunization; separate the yolk from the high-immune eggs to obtain the yolk stock solution; Dilute with cold sterilized distilled water at a volume ratio of 1:10, adjust the pH to 5.5 with 0.1mol / L HCL, stir well, let stand at 4°C for 10 hours, centrifuge at 10,000r / min for 25 minutes, and collect the supernatant as egg yolk water-soluble fraction (WFS ); using octanoic acid-cold ethanol extraction method or ammonium sulfate secondary precipitation method to sepa...
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