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International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-8 Issue-8 June, 2019 Table -4: FC-CCD data of three factors and response oil Yield (%OY) of Turmeric rhizome Factor 1 Run 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 27.5 (+1) 24.5 (0) 21.6 (-1) 24.5 (0) 24.5 (0) 21.6 (-1) 24.5 (0) 40(-1) 50(0) 50(0) 50(0) 60(+1) 40(-1) 50(0) 0.9(+1) 2.65 0.3(-1) 4.23 0.3(-1) 4.3 0.6(0) 3.23 0.9(+1) 2.62 0.6(0) 3.72 0.9(+1) 1.84 0.6(0) 3.5 illustrated in Table-5 provided the information about significant fitting of all linear terms (X1, X2, X3), all FI terms (X1X2, X1X3, X2X3) and all quadratic terms (X12, X22,X32) from their individual P value (most of them are less than 0.0500). The Model F-value of 1348.94 implies that the quadratic model equation is significant. The larger value of adequate precision (144.879>>4) obtained in ANOVA was the desirable condition to describe the true behavior of the system by the selected model in comparison to the linear model and 2FI models. A:Pressure (MPa) 24.5 (0) 24.5 (0) 21.6 (-1) 27.5 (+1) Factor 2 40(-1) 50(0) 60(+1) 50(0) 40(-1) Factor 3 C:Particle Size (mm) 0.6(0) 0.6(0) 0.6(0) 0.9(+1) 0.6(0) Response 1 %OY (gm oil/100 gm Feed) B:Temperature (0C) 3.25 21.6 (-1) 40(-1) 0.3(-1) 3.76 24.5 (0) 24.5 (0) 50(0) 50(0) 0.6(0) 0.6(0) 3.51 3.5 27.5 (+1) 50(0) 3.74 50(0) 0.6(0) 3.5 24.5 (0) 21.6 (-1) 60(+1) 0.3(-1) 3.52 4.3 27.5 (+1) 60(+1) 0.9(+1) 3.2 2.7 27.5 (+1) 60(+1) 0.3(-1) 4.45 24.5 (0) 3.5 To explore the model equation, all convenient models such as linear, two-factor interaction (FI) and quadratic were examined for the responses %OY of all runs based on R2 [33], standard deviation, adjusted R2, predicted R2, "PRESS" values, F-values, p-values, and lack-of-fit tests results. The higher order quadratic model was chosen as best for the data from the fit summary [larger F-value (25.69), negligible p-value <0.0001, low value of standard deviation (0.0256), high value of R2 (0.9992) , lowest “PRESS” value and larger Adjusted R2 (0.9984) and largest Predicted R2 (0.994), and (Adjusted R2 - Predicted R2) < 0.2]. ANOVA test results as Table 5: ANOVA for the turmeric yield (% OY) in the FC-CCD Source Sum of Squares df Model 7.95 9 Mean Square 0.8836 0.5954 0.697 6.45 0.0496 0.0595 0.0528 0.0026 0.0026 0.0085 0.0007 0.0012 0.0001 F-value 1348.94 908.85 1063.95 9843.39 75.74 90.85 80.62 3.89 3.89 p-value < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001 0.0767 0.0767 significant A-Pressure (X1) B-Temperature (X2) C-Particle Size (X3) AB AC BC A2 B2 C2 Residual Lack of Fit Pure Error Cor Total 0.5954 1 0.697 1 6.45 1 0.0496 1 0.0595 1 0.0528 1 0.0026 1 0.0026 1 0.0085 1 0.0066 10 0.0062 5 0.0003 5 7.96 19 12.91 0.0049 17.72 0.0034 significant Retrieval Number: H6344068819/19©BEIESP Published By: Blue Eyes Intelligence Engineering 327 & Sciences PublicationPDF Image | Supercritical CO2 Extraction of Essential Oil from Turmeric
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