id	keyword
brj-23337	catalyst
brj-23337	hmf
brj-23337	fructose
brj-23337	dff
brj-23337	et al
brj-23337	doi
brj-23337	reaction
brj-23337	chitosan
brj-23337	oxidation
brj-23337	yield
brj-23337	conversion
brj-23337	pma
brj-23337	article
brj-23337	acid