Natural antioxidant peptide Tiannanin-beta1 and preparation method and application thereof

A technology of tiannanin-b1, antioxidant peptide, which is applied in the fields of peptide preparation, chemical instruments and methods, cosmetic preparations, etc., can solve the problems of limited oxidative activity and high price

Inactive Publication Date: 2012-07-04
梁醒财
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Common antioxidants in cosmetics, such as vitamin C, vitamin E and SOD, etc., have limited oxidative activity
However, natural astaxanthin and oth

Method used

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  • Natural antioxidant peptide Tiannanin-beta1 and preparation method and application thereof

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Embodiment Construction

[0020] ① Acquisition of skin secretions: Stimulate the skin of the Yunnan stinky frog with a voltage of 6V for 6s, then wash the body of the stinky frog with 25mM Tris-HCl buffer (pH=7.8), collect the skin secretions, and put the collected secretions in Centrifuge at 4000rpm for 15min, vacuum freeze-dry the supernatant, and store at -80°C for later use;

[0021] ②Purification of polypeptide: redissolve the lyophilized supernatant sample, put it on a Sephadex G-75 gel filtration column equilibrated with 25mM Tris-HCl buffer (pH=7.8, containing 0.1M NaCl) in advance, and use 0.3ml / min flow rate for elution, collected every 10min. The eluted product was monitored at 280nm, the separation and purification map was drawn, and the antioxidant active ingredients were collected, and used C 4 The column was freeze-dried after removing the salt inside. Afterwards, the sample was dissolved with 20 mM NaAc-HAc buffer (pH=4.0), purified with a Resource S separation column equilibrated wi...

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Abstract

The invention relates to a natural antioxidant peptide Tiannanin-beta1 and preparation method and application thereof. The natural antioxidant peptide Tiannanin-beta1 is a gene-encoding product and has the following sequence from the N-terminal to C-terminal: VVKFPYRCKAAF. The natural antioxidant peptide is prepared from the skin of Odorrana frogs which can only be found in China and exits in the frog skin to play a major role of protecting the exposed skin from ultraviolet injury. The antioxidant peptide Tiannanin-beta1 is applied to cosmetic production, is original and pure natural, and conforms to the consumption requirements for modern people. The activity of the antioxidant peptide is 1000 times higher than that of the conventional antioxidant BHT. Besides the antioxidant activity, the peptide Tiannanin-beta1 also has antimicrobial activity, immunoregulatory activity and melanin formation inhibitory activity.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a polypeptide with antioxidant activity—natural antioxidant peptide Tiannanin-B1, its preparation method and its application in cosmetics. Background technique [0002] Free radicals are harmful compounds produced in the oxidation reaction of the body. They have strong oxidative properties and can damage the tissues and cells of the body, causing chronic diseases and aging effects. Under normal physiological conditions, the generation and removal of free radicals in the body are in a state of dynamic balance, but when the body is in an unfavorable environment and with age, the body will produce too many free radicals or remove them too slowly. Free radical scavengers, also known as antioxidants, can remove excess free radicals in the body and reduce their damage to the body. [0003] At present, it has been recognized that there are two sets of antioxidant systems in natural organis...

Claims

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Application Information

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IPC IPC(8): C07K7/08C07K1/20C07K1/16A61K8/64A61Q19/08
Inventor 梁醒财
Owner 梁醒财
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