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When cultures of Serratia marcescens , an enterobacteria isolated from the microflora associated with banana plantations incubated at 27 degrees C in a yeast - calcium carbonate - dextrose solid medium ( 10 g of yeast extract , 20 g dextrose , 15 g bacteriological agar , 20 g calcium carbonate and 1000 mL distilled water ) were extracted with chloroform and purified by column chromatography , we obtained a new colourless bacterial metabolite which according to spectroscopic data proved to be serratin .
 Chemical: calcium carbonate; Chemical: dextrose; Chemical: dextrose; Chemical: calcium carbonate; Chemical: chloroform; Chemical: serratin
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: calcium carbonate; Chemical: dextrose; Chemical: dextrose; Chemical: calcium carbonate; Chemical: chloroform; Chemical: serratin