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In this paper a combination of NIR spectroscopy and FTIR and Raman microspectroscopy was used to elucidate the effects of different salts ( NaCl , KCl and MgSO ( 4 ) ) on structural proteins and their hydration in muscle tissue .
 Chemical: NaCl; Chemical: KCl; Chemical: MgSO ( 4 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: NaCl; Chemical: KCl; Chemical: MgSO ( 4 )