جستجوی مقالات مرتبط با کلیدواژه « متدولوژی رویه سطح پاسخ » در نشریات گروه « صنایع غذایی »

Chicory plant is known as one of the main sources of industrial and commercial production of inulin. Inulin composition and its functional features depend on various parameters, including genetic characteristics and plant origin, growth environmental conditions and harvesting time, and also extraction method as well as the post extraction methods. The aim of this study was to evaluate native and exotic cultivars of chicory in terms of inulin production efficiency. The Results showed that the efficiency of inulin in indigenous landrace was relatively low while foreign cultivars revealed higher inulin content. By considering the significant difference between root weight and inulin content, foreign genotype (Orchies) was chosen to achieve optimal conditions for extracting inulin-type fructans. Response Surface Methodology and Central Composite Design were employed to investigate the effect of independent variables of time (20 to 60 min), temperature (50 to 80° C) and water to solids ratio (5:1-12:1) on the extraction efficiency. The Results demonstrated that the most effective factors in the efficiency of inulin extraction were temperature and the ratio of water to solids, while, the time had less effect on the extraction process.

Inulin is widely used in functional foods throughout the world for its health-promoting and technological properties. Helianthus tuberosus is cultivated widely in the northern part of Iran. Helianthus tuberosus can be a valuable source of Inulin. To optimize conventional extraction of Inulin, various combinations of time, temperature, and solvent: solid ratio, were used. In this research, a series of statistically designed studies were performed to investigate the effect of each of the independent variables (temperature and pH of extraction medium, extraction time, and solvent: solid ratio). The following variables: solvent: solid ratio (5-12 v/w), temperature (40-90°C) and time (5-40 min) were studied. The central composite design (CCD) and response surface methodology (RSM) were employed as experimental design and statistical analysis. Based on canonical analysis, the optimal conditions for maximizing Inulin extraction yield (42.2%) were 76.64°C for 23.90 min and solvent: solid ratios of 12:1 (v/w).