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Antioxidants 2014, 3(1), 38-54; doi:10.3390/antiox3010038

The Effect of Perilla frutescens Extract on the Oxidative Stability of Model Food Emulsions

Chemical Engineering Department, Technical University of Catalonia, Av. Diagonal, 647, Barcelona 08028, Spain
Agricultural Knowledge & Innovation Services (AKIS International), Av. Dr. Robert, 33, Albatàrrec 25171, Spain
Author to whom correspondence should be addressed.
Received: 5 December 2013 / Revised: 9 January 2014 / Accepted: 16 January 2014 / Published: 22 January 2014
(This article belongs to the Special Issue Antioxidants in Oils)
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The polyphenolic profile of leaves and stalks of Perilla frutescens, was assessed as a source of natural antioxidants. The amount of caffeic and rosmarinic acids, determined by high-performance liquid chromatography (HPLC), were 0.51 mg/g dry weight (DW) and 2.29 mg/g DW, respectively. The measurement of scavenging capacity against the 2,2′-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical cation, the oxygen radical absorbance capacity (ORAC), and the ferric reducing antioxidant power (FRAP) were 65.03 mg Trolox equivalents (TE)/g DW, 179.60 mg TE/g DW and 44.46 mg TE/g DW, respectively. P. frutescens extracts also showed good antioxidant properties in 10% sunflower oil-in-water emulsions during storage at 32 °C. Perilla extract at 320 ppm was as effective as butylated hydroxyanisole (BHA) at 20 ppm in slowing down the formation of hydroperoxides as measured by peroxide value, thiobarbituric acid reactive substances and hexanal content. The results of this study indicate that extract of P. frutescens may be suitable for use in the food matrix to help achieve potential health benefits.
Keywords: perilla; polyphenols; antioxidants; oil-in-water emulsions; lipid oxidation perilla; polyphenols; antioxidants; oil-in-water emulsions; lipid oxidation

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Skowyra, M.; Falguera, V.; Azman, N.A.M.; Segovia, F.; Almajano, M.P. The Effect of Perilla frutescens Extract on the Oxidative Stability of Model Food Emulsions. Antioxidants 2014, 3, 38-54.

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