نوع مقاله : مقاله پژوهشی انگلیسی
نویسندگان
1 گروه پژوهشی زیستفناوری مواد غذایی، مؤسسه پژوهشی علوم و صنایع غذایی، مشهد، ایران
2 گروه پژوهشی نانوفناوری مواد غذایی، مؤسسه پژوهشی علوم و صنایع غذایی، مشهد، ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
The efficiency of an extraction procedure in recovering bioactive phenolic compounds is highly dependent on its mechanism and operating conditions. Polyphenols were extracted from Salvia leriifolia leaves using conventional solvent extraction and also superheated extraction techniques. The faced central composite experimental design of response surface methodology (RSM) applied to evaluate the effects of the solvent ratio, temperature, and time on both the process yield and total phenolic content. Optimization revealed that the modification in the extraction technology greatly affected the procedure. According to the results, the superheated solvent method was significantly more efficient compared to the conventional solvent extraction, and the highest yield of 53.29 % and total phenolic content of 737.21 mg GAE/g E were obtained under the optimal conditions (25.17 % ethanolic solvent at the extraction temperature of 160 °C for 28.97 min). In contrast, the optimization of conventional solvent extraction method revealed a maximum extraction yield and total phenolics of 30.96 % and 693.23 mg GAE/g E, respectively (using 50 % ethanolic solvent at the extraction temperature of 82.57 °C for 103.31 min). This is the first report on optimizing the superheated solvent extraction of phenolic compounds from Salvia leriifolia leaves.
کلیدواژهها English
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