21765
Potato protein isolate ( PPI ) was phosphorylated with sodium trimetaphosphate ( STMP ) at ambient temperature and various reaction pH ( 5 . 2 , 6 . 2 , 8 . 0 and 10 . 5 ) to improve the functional properties without impairing the nutritional availability .
 Chemical: sodium trimetaphosphate; Chemical: STMP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: sodium trimetaphosphate; Chemical: STMP