id	keyword
alkej-830	acid
alkej-830	citric
alkej-830	doi
alkej-830	vol
alkej-830	production
alkej-830	fermentation
alkej-830	acid production
alkej-830	journal
alkej-830	niger
alkej-830	aspergillus
alkej-830	biotechnology
alkej-830	engineering
alkej-830	state
alkej-830	food