Browsing by Author "Acikel, Unsal"
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Effects of stirring and aeration rates on lipase production and growth of R. delemar
Ersan, Mehtap; Acikel, Unsal; Acikel, Yesim Sag (ELSEVIER SCIENCE BV, 2012)… -
EFFECTS OF STIRRING AND AERATION RATES ON LIPASE PRODUCTION AND GROWTH OF R. DELEMAR IN THE MEDIA CONTAINING GLUCOSE OR MOLASSES SUCROSE AND PFC
Sag Acikel, Yegim; Ersan, Mehtap; Acikel, Unsal (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2013)Lipases (triacylglycerol hydrolases) are hydrolytic enzymes that can catalyze the hydrolysis of the ester bond of long-chain acylglycerols at the oil-water interface. The effects of stirring rate, aeration rate, and the ... -
The effects of the composition of growth medium and fermentation conditions on the production of lipase by R. delemar
Acikel, Unsal; Ersan, Mehtap; Acikel, Yesim Sag (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2011)Lipases (triacylglycerol hydrolases) are hydrolytic enzymes that can catalyze the hydrolysis of the ester bond of long-chain acylglycerols at the oil-water interface. The present study investigated the effects of inducers, ... -
Equilibrium, hysteresis and kinetics of cadmium desorption from sodium-feldspar using rhamnolipid biosurfactant
Asci, Yeliz; Acikel, Unsal; Acikel, Yesim Sag (TAYLOR & FRANCIS LTD, 2012)In this study, the sorption/desorption equilibruim and the desorption kinetics of Cd by rhamnolipid biosurfactant from Na-feldspar as a soil component were investigated. The linear, Langmuir and Freundlich isotherms ... -
Investigation of inhibition kinetics of Zn(II) Ions on the acid phosphatase activity and growth of R-delemar and Zn(II) bioaccumulation
Acikel, Unsal; Ersan, Mehtap (TAYLOR & FRANCIS INC, 2016)This study investigated the production of acid phosphatase enzyme, which plays a direct role in the metal bioaccumulation and growth of Rhizopus delemar, in the presence of increasing concentrations of Zn(II) ions. Inhibition ... -
OPTIMIZATION OF ACID PHOSPHATASE PRODUCTION AND ZN(II) BIOACCUMULATION by R. delemar USING RESPONSE SURFACE METHOD
Ersan, Mehtap; Acikel, Unsal (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2014)Acid phosphatase activity, Zn (II) bioaccumulation and growth of R. delemar were investigated as a function of pH, temperature and initial Zn(II) ion concentration. Experimental design was performed by response surface ... -
Removal of tetraclycine by biocomposites synthesized with immobilization of Rhizopus delamar and Candida types
Kip, Feray; Acikel, Unsal (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2019)In this study, tetracycline adsorption using the biocomposites prepared by the immobilization of chitosan polymer and Candida yeasts (Candida lipolytica, Candida membranaefaciens, Candida tropicalis, Candida utilis) and ... -
STUDY OF LIPASE ENZYM ACTIVITY WITH Candida utilis YEAST IN DIFFERENT MEDIA CONDITION
Keklikcioglu Cakmak, Nese; Acikel, Unsal (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2015)Lipases (triacylglycerol hydrolases, EC 3.1.1.3) are hydrolytic enzymes that can catalyze the hydrolysis of the ester bond of long chain acylglycerols at the oil-water interface. In this study; the effects of initial pH, ... -
Synthesis of hydroxyapatite/clay and hydroxyapatite/pumice composites for tetracycline removal from aqueous solutions
Ersan, Mehtap; Guler, Ulker Asli; Acikel, Unsal; Sarioglu, Meltem (INST CHEMICAL ENGINEERS, 2015)Synthesized hydroxyapatite/clay (HA-C) and hydroxyapatite/pumice (HA-P) composites were used for tetracycline (TC) uptake studies from aqueous solution and their uptake capacities were compared. HA-C and HA-P composites ...