15559
Gelatin from skin extracted at 75 degrees C in the absence of SBTI showed the highest yield ( 10 . 66 +/- 0 . 41 % ) ( based on dry weight ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None