Multivariate optimization of a synergistic blend of oleoresin sage (Salvia officinalis L.) and ascorbyl palmitate to stabilize sunflower oil

Abstract

The simultaneous optimization of a synergistic blend of oleoresin sage (SAG) 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, free fatty acids, induction period, total polar matter, antioxidant capacity and conjugated diene value were considered as response variables. PCA reduced the original set of correlated responses to few uncorrelated principal components (PC). The PC1 (eigen value, 5.78; data variance explained, 82.53 %) was selected for optimization using RSM. The quadratic model adequately described the data (R 2 = 0. 91, 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 1289.19 and 218.06 ppm for SAG and AP, respectively. This combination of SAG and AP resulted in shelf life of 320 days at 25°C estimated using linear shelf life prediction model. In conclusion, the versatility of PCA-RSM approach has resulted in an easy interpretation in multiple response optimizations. This approach can be considered as a useful guide to develop new oil blends stabilized with food additives from natural sources.

Effects of olive wastewater and pomace extracts, lecithin, and ascorbyl palmitate on the oxidative stability of refined sunflower oil

“…Besides oxygen scavenging activity of AP, its antioxidant activity depends on hydrogen donation to regenerate the stable antioxidant radical; metal inactivation to reduce the rate of initiation by metals and hydroperoxide reduction to produce stable alcohols by nonradical processes (Frankel, ). Antioxidant effectiveness of natural extracts with AP in SFO was examined in some researches (Upadhyay & Mishra, ; Upadhyay et al, ). In these studies, the synergistic effect of sage or rosemary extracts with AP in SFO was found concentration‐dependent.…”

“…It was reported that AP had synergist effects with α‐tocopherol during butter oil triacylglycerol (TAG) oxidation (Karabulut, ). On the other hand, synergism was observed for AP with some herbs (Beddows et al, ; Upadhyay & Mishra, ; Upadhyay, Sehwag, & Niwas Mishra, ) and olive mill waste extracts (Lafka et al, ) under Rancimat test conditions.…”

Preservative effects of some selected spice oleoresins to stabilize the sunflower oil in comparison to tertiary butylhydroquinone

“…Among natural antioxidants, the spices and herbal extracts, tocopherols, ascorbic acid, citric acid, and carotenoids are widely covered. It is commercially available in the market in different formulations such as oleoresin, seasoning, and flavoring agent (Upadhyay & Mishra, 2016). Natural antioxidants are effective in thermo-oxidative stabilization of fats and oils (Jaswir, Che Man, & Kitts, 2000).…”

Empirical Models to Predict Shelf Life of Sunflower Oil Stabilized with Oleoresin Sage (Salvia officinalis L.) and Ascorbyl Palmitate

“…An interesting finding by Hras et al . () and Upadhyay and Mishra () also revealed the synergistic effects of natural antioxidants in stabilizing the oil blends.…”