US2014170087A1PendingUtilityA1

Uv-resistant microbes and uv-blocking microbial extract

59
Individually held — no corporate assignee on recordPriority: Dec 17, 2012Filed: Dec 13, 2013Published: Jun 19, 2014
Est. expiryDec 17, 2032(~6.4 yrs left)· nominal 20-yr term from priority
Inventors:Raul G. CueroDavid S. Mckay
A61Q 17/04A61K 8/9728A01N 63/32A01N 63/20A61K 8/99
59
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Claims

Abstract

The present disclosure relates to a composition including an extract from an Acidithiobacillus bacteria or a yeast extracted after exposure of the bacteria to UV radiation. The disclosure further relates to a method of preparing a UV-blocking composition by exposing a culture of Acidithiobacillus or yeast to UV radiation and extracting UV-blocking cellular material produced in response to the UV radiation from the Acidithiobacillus or yeast. The disclosure further relates to a method of protecting an item from UV radiation damage by extracting UV-blocking cellular material from Acidithiobacillus or yeast exposed to UV radiation and covering the item with the UV-blocking cellular material. The disclosure further relates to a UV-resistant yeast cell and a UV-resistant bacterial cell.

Claims

exact text as granted — not AI-modified
1 . A composition comprising an extract from an  Acidithiobacillus  bacteria or a yeast extracted after exposure of the bacteria to UV radiation. 
     
     
         2 . The composition of  claim 1 , wherein the  Acidithiobacillus  bacteria comprises  A. ferroxidans.    
     
     
         3 . The composition of  claim 1 , wherein the yeast comprises  S. Cerevisiaea.    
     
     
         4 . The composition of  claim 1 , wherein the extract blocks at least approximately 50% of UV radiation. 
     
     
         5 . The composition of  claim 1 , wherein the extract blocks at least approximately 50% of longwave UV radiation. 
     
     
         6 . The composition of  claim 1 , wherein the extract blocks at least approximately 50% of shortwave UV radiation. 
     
     
         7 . The composition of  claim 1 , wherein the concentration of the extract is between approximately 0.05 g/mL and 0.025 g/mL. 
     
     
         8 . The composition of  claim 1  further comprising a carrier. 
     
     
         9 . The composition of  claim 7 , wherein the carrier comprises water. 
     
     
         10 . A method of preparing a UV-blocking composition comprising:
 exposing a culture of  Acidithiobacillus  or yeast to UV radiation; and   extracting UV-blocking cellular material produced in response to the UV radiation from the  Acidithiobacillus  or yeast.   
     
     
         11 . The method of  claim 10 , wherein the  Acidithiobacillus  comprises  A. ferroxidans.    
     
     
         12 . The method of  claim 10 , wherein the yeast comprises  S. Cerevisiaea.    
     
     
         13 . The method of  claim 10 , wherein the culture of  Acidithiobacillus  or yeast is exposed to UV radiation for a length of time not sufficient to substantially kill the  Acidithiobacillus  or yeast in the culture. 
     
     
         14 . The method of  claim 10 , wherein extracting comprises centrifuging the  Acidithiobacillus  or yeast culture under conditions sufficient to precipitate UV-blocking cellular proteins. 
     
     
         15 . A method of protecting an item from UV radiation damage comprising:
 extracting UV-blocking cellular material from  Acidithiobacillus  or yeast exposed to UV radiation; and   covering the item with the UV-blocking cellular material.   
     
     
         16 . The method of  claim 15 , wherein covering comprises applying a liquid containing the UV-blocking cellular material to the item. 
     
     
         17 . The method of  claim 15 , wherein covering comprises mixing the UV-blocking cellular material with the item. 
     
     
         18 . The method of  claim 15 , wherein covering comprised placing a solid material containing the UV-blocking cellular material over the item. 
     
     
         19 . The method of  claim 16 , wherein the item comprises an agricultural product. 
     
     
         20 . The method of  claim 16 , wherein the item comprises human skin.

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