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Solubility of phenolic compounds depends on the polarity of used solvent, degree of polymerization of phenolics, as well as on the interaction of phenolics with other plant constituents and formation of insoluble complexes. Therefore, there is no universal procedure that is suitable for the extraction of all phenolics or a specific class of phenolic substances in plant materials (Cvetanovic et al. 2014). However, it is very important to find optimal conditions for their extraction from natural sources. In this research, at different investigated extraction conditions, total phenol content in orange extracts varied from 3.10 to3.72 mg/ml. In the experiments, the highest phenol con-tent was obtained at the temperature of 40 °C and ethanol concentration of 50 % during 180 min. The regression coefficients of models for total phenols obtained by multiple linear regression are reported in Table3.Totalphenolic content was highly significant influenced bilinear term of extraction time and quadratic term of temperature (p<0.01). Effects of temperature, ethanol concentration and extraction time on total phenolic con-tent of orange extracts can be described by the following equation i need to rewrite for me
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Solubility of phenolic compounds depends on the polarity of used solvent, degree of polymerization of phenolics, as well as on the interaction of phenolics with other plant constituents and formation of insoluble complexes. Therefore, there is no universal procedure that is suitable for the extraction of all phenolics or a specific class of phenolic substances in plant materials (Cvetanovic et al. 2014). However, it is very important to find optimal conditions for their extraction from natural sources. In this research, at different investigated extraction conditions, total phenol content in orange extracts varied from 3.10 to3.72 mg/ml. In the experiments, the highest phenol con-tent was obtained at the temperature of 40 °C and ethanol concentration of 50 % during 180 min. The regression coefficients of models for total phenols obtained by multiple linear regression are reported in Table3.Totalphenolic content was highly significant influenced bilinear term of extraction time and quadratic term of temperature (p<0.01). Effects of temperature, ethanol concentration and extraction time on total phenolic con-tent of orange extracts can be described by the following equation i need to rewrite for me
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