Polyphenolic Profile and Antimicrobial Potential of Peel Extracts Obtained from Organic Pomegranate (Punica granatum L.) Variety “Mollar De Elche”

Abstract

The aim of this work was to determine the polyphenolic profile and the antibacterial properties of extracts from organic pomegranate peel, to evaluate if it could be used as a potential antimicrobial ingredient to elaborated organic food. The antibacterial properties of different organic pomegranate peel extracts (ethyl acetate, acetone and methanol, with an increasing polarity) were tested against: Listeria innocua, Achromobacter denitrificans and Algaligenes faecalis. All extracts showed antimicrobial activity against all bacteria tested except ethyl acetate extract against A. denitrificans. The polyphenolic profile was determined by High Performance Liquid Chromatography (HPLC). Five compounds were identified. Punicagalin was the main component found in acetone and methanol extracts (7,939 µg.g−1 and 5,178 µg.g−1 of lyophilized sample, respectively). Ellagic acid was the main component found in ethyl acetate extract (171 µg.g−1 of lyophilized sample).

Comparative Chemical Analysis of Eight Punica granatum L. Peel Cultivars and Their Antioxidant and Anti-Inflammatory Activities

“…Since multiple factors (for example, genetic, geographic, and climatic) have critical effects on the production of secondary metabolites [ 32 , 33 ], it is important to evaluate their effect on the characteristics and quality of by-products. Many studies support the antioxidant and anti-inflammatory effects of the phytochemicals from different P. granatum cultivated varieties [ 34 , 35 ]. In this report, the results of a study aimed at evaluating the possibility of using pomegranate peels from South Italy’s internal areas as a source of extracts with antioxidant and anti-inflammatory activities were pointed out.…”

Microencapsulation of ellagic acid extracted from pomegranate peel onto Spirulina : Characterization, loading, and storage stability properties

“…Two different solvent media were used because it was desired to see whether there was a difference between antioxidant activity and levels of phenolic compounds extracted using different solvents (Singh et al., 2018). In the literature, different organic pomegranate peel extracts (acetone, methanol, and ethyl acetate‐based extracts) were used, each one's polyphenolic profile and antibacterial properties were determined and it was investigated whether it could be used as potential antimicrobial components to be included as organic (Cano‐Lamadrıd et al., 2020).…”

Microwave- and Ultrasonication-Based Intensified and Synergetic Approaches for Extraction of Bioactive Compounds from Pomegranate Peels: Parametric and Kinetic Studies

“…Over the last few decades, pomegranate consumption has sharply increased because of its delicious flavor and many health benefits . During the handling process, pomegranate fruits are freshly cut for processing of juice, leading to more than 50% of the product being discarded as peels, carpel membranes, and seeds. , Pomegranate peel is a frugal and rich source of polyphenols, like “phenolic acids (chlorogenic acid, ellagic acid, gallic acid, and ferulic acid), flavonoids (catechin, gallate, quercetin, rutin, kaempferol, and hesperidin), and hydrolysable tannins”. In addition, they are abundant in dietary fibers, such as cellulose and galactose, as well as a variety of other substances, like minerals, glycosides, and alkaloids. − …”