Avocado Seeds: Extraction Optimization and Possible Use as Antioxidant in Food

Abstract

Consumption of avocado (Persea americana Mill) has increased worldwide in recent years. Part of this food (skin and seed) is lost during processing. However, a high proportion of bioactive substances, such as polyphenols, remain in this residue. The primary objective of this study was to model the extraction of polyphenols from the avocado pits. In addition, a further objective was to use the extract obtained to evaluate the protective power against oxidation in food systems, as for instance oil in water emulsions and meat products. Moreover, the possible synergy between the extracts and egg albumin in the emulsions is discussed. In Response Surface Method (RSM), the variables used are: temperature, time and ethanol concentration. The results are the total polyphenols content (TPC) and the antiradical power measured by Oxygen Radical Antioxidant Capacity (ORAC). In emulsions, the primary oxidation, by Peroxide Value and in fat meat the secondary oxidation, by TBARS (Thiobarbituric acid reactive substances), were analyzed. The RSM model has an R2 of 94.69 for TPC and 96.7 for ORAC. In emulsions, the inhibition of the oxidation is about 30% for pure extracts and 60% for the combination of extracts with egg albumin. In the meat burger oxidation, the formation of TBARS is avoided by 90%.

ANTI-INFLAMMATORY AND ANALGESIC ACTIVITIES OF AVOCADO SEED (Persea americana Mill.)

“…Avocado seeds have relatively high antioxidant activity so that it can be considered as one of natural antioxidant sources (Malangngi, 2012). According to Arukwe et al (2012) and Gomez et al (2014), avocado seeds are rich in flavonoid, which shows radical capturing activity towards DPPH (Konsinska et al, 2012). Flavonoid plays the role as ROS through its reaction towards reactive compounds and free radicals which cause inactivity in damaged cell tissue.…”

Phytochemical Benefits of Agroresidues as Alternative Nutritive Dietary Resource for Pig and Poultry Farming

“…(1) Avocado (Persea americana) Waste. e consumption of avocado is extensive globally [30]. e waste generated during processing of avocado for human consumption contains high concentrations of bioactive compounds such as polyphenols.…”

Effects of avocado seed extract in different trisextenders on sperm and oxidative stress indices of vitrified goat spermatozoa

“…The improvement in sperm quality and fertilizing ability indices in this study revealed the preservative effect of these extenders and could be attributed to the components of ASE that are essential for optimal survival of spermatozoa during vitrification. Avocados contain some minerals, lutein and antioxidants that are essential in cell functions (USDA, 2011;Dreher and Davenport, 2013;Gómez et al, 2014;Vedamurthy et al, 2015). Daramola James Olamitibo et al 370 Adverse effects of seminal oxidative stress on sperm quality have been evaluated using MDA concentration (Arabi and Seidaie, 2008;Piyali et al, 2009;Pasqualotto et al, 2000).…”

“…The antioxidant property of avocado seed extract has recently been reported to remove 1,1-diphenyl,2picrylhydrazyl (Vedamurthy et al, 2015). A considerable percentage of polyphenols are also present in avocado (Gómez et al, 2014). Polyphenols are able to prevent cell damage caused by lipid peroxidation (Perumalla and Hettiarachchy, 2011).…”

“…Accordingly, extenders free of animal products could be a possible alternative option to solve these problems. The seed of avocado (Persea americana) is rich in some important compounds such as minerals, lutein and antioxidants that are essential components of semen extenders necessary for cryosurvival of spermatozoa (USDA, 2011;Gómez et al, 2014;Vedamurthy et al, 2015). The beneficial effects of ASE in semen extenders have not been reported.…”