id	keyword
alkej-995	phase
alkej-995	invertase
alkej-995	concentration
alkej-995	vol
alkej-995	enzyme
alkej-995	journal
alkej-995	system
alkej-995	engineering
alkej-995	temperature
alkej-995	extraction
alkej-995	peg8000
alkej-995	rec
alkej-995	protein
alkej-995	activity