A multivariate approach to optimise the synergistic blend of oleoresin rosemary (Rosmarinus officinalis L.) and ascorbyl palmitate added into sunflower oil

作者：Upadhyay Rohit^*; Mishra Hari Niwas

来源：International Journal of Food Science and Technology, 2015, 50(4): 974-981.

DOI：10.1111/ijfs.12738

• Ascorbyl palmitate
• multiple response optimisation
• principal component analysis
• response surface methodology
• Rosemary (Rosmarinus officinalis L.)
• sunflower oil

The simultaneous optimisation of a synergistic blend of oleoresin rosemary (ROS) and ascorbyl palmitate (AP) in sunflower oil (SO) was performed using central composite and rotatable design coupled with principal component analysis (PCA) and response surface methodology (RSM). The physicochemical parameters, viz. peroxide value, anisidine value, induction period, total polar matter, UV absorbances (232 and 270nm) and antioxidant capacity were considered as response variables. PCA reduced the original set of correlated responses to few uncorrelated principal components (PC). The PC1 (eigenvalue, 6.08; data variance explained, 86.97%) was selected for optimisation using RSM. The quadratic model described the data (R-2=0. 93, P<0.05), and lack of fit was insignificant (P>0.05). The contour plot of PC 1 score indicated the optimal synergistic combination of 1309.62 and 129.29ppm for ROS and AP, respectively. In conclusion, the versatility of PCA-RSM approach has resulted in an easy interpretation in multiple response optimisations.

• 出版日期2015-4