[Screening and breeding of highly-effected degrading cotton-phenol strains and study on defoxication technology and...

From mildewed cottonseed cake and stock cultures of mold and yeast. We select more than ten strains of yeasts and molds which can degrade cotton phenol. At last we got four strains which can degrade cotton phenol highly effected after mutagenized by physical and chemical factors and induced by cotton phenol. They belong to Candida tropicalis, Torulopsis candida, Aspergillus flavus and Aspergillus niger. By small and medium size fermenfations, the content of dissociated cotton phenol all reach safe criterion (the lowest dissociated cotton phenol content is 220 mg/L in the defoxicated cottonseed cake), compared with FeSO4 method, defoxicated cottonseed cake looks and tastes well and the content of protein and amino acid are highly enhanced as will.