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In this article , a novel and efficient analysis method is described to simultaneously and quantitatively determine glucoraphanin and its major degradation product sulforaphane by reversed - phase high - performance liquid chromatography ( HPLC ) coupled with an evaporative light - scattering detector ( ELSD ) .
 Chemical: glucoraphanin; Chemical: sulforaphane
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: glucoraphanin; Chemical: sulforaphane