Effect of Leaves of Caesalpinia decapetala on Oxidative Stability of Oil-in-Water Emulsions

Abstract

Caesalpinia decapetala (Roth) Alston (Fabaceae) (CD) is used in folk medicine to prevent colds and treat bronchitis. This plant has antitumor and antioxidant activity. The antioxidant effects of an extract from Caesalpinia decapetala (Fabaceae) were assessed by storage of model food oil-in-water emulsions with analysis of primary and secondary oxidation products. The antioxidant capacity of the plant extract was evaluated by the diphenylpicrylhydrazyl (DPPH), Trolox equivalent antioxidant capacity (TEAC), oxygen radical absorbance capacity (ORAC) and ferric reducing antioxidant power (FRAP) assays and by electron paramagnetic resonance (EPR) spectroscopy. Lyophilized extracts of CD were added at concentrations of 0.002%, 0.02% and 0.2% into oil-in-water emulsions, which were stored for 30 days at 33 ± 1 °C, and then, oxidative stability was evaluated. The CD extract had high antioxidant activity (700 ± 70 µmol Trolox/g dry plant for the ORAC assay), mainly due to its phenolic components: gallic acid, quercetin, catechin, 4-hydroxybenzoic acid and p-coumaric acid. At a concentration of 0.2%, the extract significantly reduced the oxidative deterioration of oil-in-water emulsions. The results of the present study show the possibility of utilizing CD as a promising source of natural antioxidants for retarding lipid oxidation in the food and cosmetic industries.

Activity of catechins and their applications

“…BP-4, a soluble UVB filter, can stabilise EGCG to produce effective anti-oxidants. Catechin preparations made with lipid ingredients are less stable in heat, so it is necessary to Gallego et al 2017, Spizzirri et al 2009, Nadim et al 2014, Feng et al 2014, Feng et al 2013, Zhong and Shahidi 2011, Muhammad et al 2014, Li and Seeram 2018, Choi et al 2018, Shoko et al 2018, Lima et al 2016 UV protection Improve the stability of catechins in sunlight and increase the UV protection effect Zhang et al 2016, Yoshino et al 2013, Niu et al 2017, Huang et al 2007, Martincigh and Ollengo 2016, Parisi et al 2012, Kim et al 2012, Xia et al 2005 Anti-microbial activities Demonstrates anti-microbial activity and develops pharmaceuticals and functional cosmetics de Oliveira et al 2017, Aoshima et al 2009, Goyal et al 2017 Anti-allergenic and antiinflammatory activities…”

“…Has an anti-allergenic component and antiinflammatory and anti-arthritic activity Ohmori et al 1995, Marques et al 2018, Foyet et al 2015, Magalhães et al 2009 Anti-viral activities Shows anti-influenza activity and interferes with cell infiltration and attachment of herpes simplex virus Ide et al 2014, Cheng 2006 Anti-cancer activities Extract from Lawsonia inermis (Henna) can inhibit proliferation of cancer cells Kumar et al 2016 Activation of skin barrier passage Various methods have enhanced the skin penetration of epigallocatechin-3-gallate (EGCG) anti-oxidants Puri et al 2016, Zillich et al 2013, dal Belo et al 2009, Kadhum et al 2017, Bombardelli 1991, Arct et al 2002, Yang et al 2015c, Wisuitiprot et al 2011 Promoting cell activities Effective for low cytotoxicity and anti-melanin production and improves reactive oxygen species (ROS)-mediated cell viability and cell proliferation Kim et al 2015 Sludge utilisation Anti-oxidant components were extracted from various sludge, suggesting that they could be developed into foods, cosmetics, and pharmaceuticals Aires et al 2016, Magalhães et al 2015, Reis et al 2016, Kosińska et al 2012, Arruda et al 2017, Hernández-Hernández et al 2018, Sharma et al 2013, Demoliner et al 2018, Oliveira et al 2013 Stability Aspects exploited for improving stability include sunlight, oxidation, compound stability, and collagen stabilisation Scalia et al 2013, Ferreira-Nunes et al 2018, Jang et al 2014, Bianchi et al 2011, Madhan et al 2005, Gallego et al 2017 Relatively stable at low pH and the extraction efficiency of anti-oxidants was high Tsuchiya et...…”

“…C. decapetala extracts have anti-oxidant properties due to the phenolic compounds in the leaves. At a concentration of 0.2%, C. decapetala extracts reduced the oxidative degradation of the oil-in-water emulsion (Gallego et al 2017).…”

“…synthesis of galactan, and catechin anti-oxidants covalently bind to chains of proteins (Spizzirri et al 2009). Caesalpinia decapetala (C. decapetala) is effective in the oxidation stability of an oil-in-water emulsion (Gallego et al 2017). Analysis using LC-ESI/LTQ Orbitrap/MS of autochthonous germplasm of the Campania region showed a higher level of anti-oxidant activity compared with the non-autochthonous germplasm (D'Urso et al 2018).…”

Antioxidant Activity of Thyme Waste Extract in O/W Emulsions

“…According to Gallego et al [26], the emulsion stability increased with increasing concentration of natural extracts. Emulsions containing extract concentrations of 0.02% and 0.2% showed a higher stability than those prepared with the positive Trolox control (0.02%), and the 0.2% extract exhibited a similar antioxidant effect to that of BHA, at 0.004%.…”