Characterization of constituents, quality and stability of pomegranate seed oil (Punica granatum L.)

Abstract

This study aimed to characterize pomegranate seed oil and evaluate its quality and stability parameters against those of linseed oil. The profile of fatty acids and phytosterols and the content of tocopherols were analyzed by gas chromatography and high performance liquid chromatography, respectively. The quality of both oils was assessed as recommended by the American Dil Chemists' Society (ADCS) and stability was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH), β-carotene bleaching (coupled oxidation of β-carotene/linoleic acid) and Rancimat  assays. While α-linolenic acid (52%) was the most abundant fatty acid in linseed oil (LD), punicic acid (55%) was highest in pomegranate seed oil (PSD). Tocopherols and phytosterols (175 and 539 mg/100 g, respectively) were greater in PSD than in LD (51 and 328 mg/100 g, respectively). Both oils met quality standards. The β-carotene bleaching and the DPPH assays showed greater oxidative stability for PSD than for LD. The Rancimat  method, on the other hand, indicated low stability for both oils.

The effect of pomegranate seed oil and grapeseed oil on cis‐9, trans‐11 CLA (rumenic acid), n‐3 and n‐6 fatty acids deposition in selected tissues of chickens

“…However, in our present study, elevated levels of RA were present also in tissues rich in polar lipids (phospholipids) which may be the result of high efficiency of PA conversion into RA. Activity of enzymes catalysing this reaction seems to be very high in chickens tissues and because of that PSO can be considered as an indirect source of CLA (Melo et al., ). However, RA was also present in examined tissues of chickens fed with higher dose of GSO (2.0%) which may indicate that RA in chickens can arise not only from PA, but also from other FA, via similar route as in mammals.…”

Conjugated linolenic acid (CLnA) isomers as new bioactive lipid compounds in ruminant-derived food products. A review

“…This reaction is carried out by a reduced form of nicotinamide adenine dinucleotide phosphate (NADPH)-dependent enzyme that is either a novel enzyme recognizing fatty acids with three conjugated double bonds or the enzyme active in the reductive pathway of leukotriene B4 (LTB4). Therefore, sources of these CLnA are sometimes called an indirect source of CLA (Melo et al, 2016).…”

Formulation of Pomegranate Seed Oil: A Promising Approach of Improving Stability and Health‐Promoting Properties

“…It is possible that PuA is the most studied component because of its dominance in the oil . The biological properties of PSO have been well‐investigated and elucidated in several reviews . Additional health attributes have been reported to include anti‐osteoporosis, hepatoprotection, neuroprotection, promotion of peak bone mass and insulin resistance reduction .…”

“…Pomegranate seed oil (PSO) is an excellent natural occurring oil with favorable physiological effects. It is extracted from pomegranates ( Punica granatum L.), which are widely grown in Mediterranean areas, as well as in countries such as Iran, India, China, Japan, and Russia . Pomegranate has been used as traditional medicine in Asian cultures to treat different ailments .…”