发明名称 |
Process for obtaining a rabbit skin comprising biological active substances |
摘要 |
The present invention relates to a process for obtaining a rabbit skin containing biologically active substances. The rabbit skin extract is obtained by the process including vaccinating a rabbit subcutaneously with vaccinia virus, feeding the rabbit, killing the rabbit when the skin is inflamed, skinning the rabbit within 15 minutes of death, preserving the rabbit skin at −18 degrees Celsius, extracting a portion of the rabbit skin with a phenol solution at 4° C., processing the rabbit skin extract with an acid and an alkali, eluting the rabbit skin extract and fractioning under a nitrogen atmosphere the eluted portion of the rabbit skin extract. The rabbit skin of the present invention can be used for preparing drugs and health foods. |
申请公布号 |
US8900639(B2) |
申请公布日期 |
2014.12.02 |
申请号 |
US201313777637 |
申请日期 |
2013.02.26 |
申请人 |
Vanworld Pharmaceutical (Rugao) Company Limited |
发明人 |
Cheung Wing Sum |
分类号 |
A61K35/36;A23J1/10;A61K35/12;A61K39/285;A61K39/00 |
主分类号 |
A61K35/36 |
代理机构 |
Greer, Burns & Crain, Ltd. |
代理人 |
Greer, Burns & Crain, Ltd. |
主权项 |
1. A process for obtaining a rabbit skin extract, said process comprising:
i) inoculating a rabbit subcutaneously with a vaccinia virus, wherein said subcutaneous injection is 0.1-0.4 ml of a vaccinia virus solution containing 106-109 viral particles per one milliliter per each injection site, wherein the total number of injections is from 100 to 250 per rabbit, wherein the rabbit weighs 1.5-3 kg; ii) feeding and monitoring the rabbit for at least 72 hours to monitor development of skin inflammation; iii) sacrificing the rabbit between 72 and 96 hours after inoculation; iv) harvesting the inflamed rabbit skin within 15 minutes of step iii) and preserving the inflamed rabbit skin at 18 degree C; v) obtaining a rabbit skin extract by treating the inflamed rabbit skin obtained in step iv) with a 3% phenol solution at 4 degree C. for at least 72 hours, wherein the ratio between said rabbit skin and said phenol solution is at least 1:4 by weight; vi) processing said rabbit skin extract from step v) to obtain a rabbit skin extract with a pH of 4.5; vii) incubating said processed rabbit skin extract from step vi) with activated charcoal; viii) eluting said processed rabbit skin extract from the activated charcoal from step vii) under a basic pH, thereby obtaining the rabbit skin extract. |
地址 |
Rugao CN |