Bioproduction, characterization, anticancer and antioxidant activities of extracellular melanin pigment produced by newly isolated microbial cell factories Streptomyces glaucescens NEAE-H.

The aim of sequential model sum of squares is to select the highest order polynomial where terms are significant; quadratic model type was selected to be the proper model that fit the FCCD of melanin production by Streptomyces glaucescens strain NEAE-H, where fit summary results showed that, the quadratic model is a highly significant model with a very low probability value [( P model > F ) < 0.0001].

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