@article{PAR00026390, title = {{S}tatistical optimization and partial characterization of xylanases produced by {S}treptomyces sp. {S}1{M}3{I} using olive pomace as a fermentation substrate}, author = {{M}edouni-{H}aroune, {L}. and {M}edouni-{A}drar, {S}. and {H}oufani, {A}. {A}. and {B}ouiche, {C}. and {A}zzouz, {Z}. and {R}oussos, {S}evastianos and {D}esseaux, {V}. and {M}adani, {K}. and {K}echa, {M}.}, editor = {}, language = {{ENG}}, abstract = {{X}ylanase production by {S}treptomyces sp. {S}1{M}3{I} was optimized by response surface methodology ({RSM}), followed by a partial characterization of these enzymes. {O}live pomace was used as a substrate for growing {S}treptomyces sp. {S}1{M}3{I} in submerged fermentation. {E}ffects of incubation time, p{H}, temperature, carbon source, nitrogen source, and inoculum size on xylanase production were studied, through the one-factor-at-a-time method. {T}hen, a 3(3)-factorial experimental design with {RSM} and the {B}ox-{B}ehnken design was investigated for the major influence factors. {M}aximum xylanase production (11.28 {U}/m{L}) was obtained when the strain was grown in mineral medium supplemented with 3% (w/v) of olive pomace powder and 0.3% (w/v) of ammonium sulfate, at a p{H} 7.4 and an incubation temperature of 40 & {DEG};{C}. {T}he xylanases in the supernatant degraded all tested substrates, with higher activity for the low-viscosity wheat arabinoxylan substrate. {T}wo xylanases with close molecular masses were detected by zymogram analysis: {X}yl-1 and {X}yl-2 with molecular masses of 24.14 k{D}a and 27 k{D}a, respectively. {T}he optimization of enzyme production parameters of {S}treptomyces sp. {S}1{M}3{I} and the characterization of these enzymes are prerequisites to enhancing xylanase production yield, which is crucial for further biotechnological processes.}, keywords = {{A}ctinobacteria ; {X}ylanase ; {O}live pomace ; {O}ptimization ; {C}haracterization}, booktitle = {}, journal = {{A}pplied {B}iochemistry and {B}iotechnology}, volume = {[{E}arly access]}, numero = {}, pages = {[ p.]}, ISSN = {0273-2289}, year = {2023}, DOI = {10.1007/s12010-023-04660-1}, URL = {https://www.documentation.ird.fr/hor/{PAR}00026390}, }