25470
Samples of various natural colouring solutions were prepared in aqueous model matrices at a range of pH values to mimic the majority of food matrices , pasteurised and irradiated under normal D65 light ( 0 . 2W / m ( 2 ) ) at 25 degrees C , and in parallel under high light intensity irradiation ( 30W / m ( 2 ) ) at 3 different temperatures ( 25 , 35 and 45 degrees C ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None