Antibacterial activity and in vivo wound healing potential of phenolic extracts from jaboticaba skin

Abstract

In this study, different phenolic extracts were obtained from the jaboticaba skin meal (JSM), whose phenolic compounds were characterized and their antibacterial activities were assessed. Moreover, the activity of lyophilized ethanolic extract of jaboticaba skin (EEJS) on wound healing was analyzed in rats. The JSM phenolic extracts were obtained in four ways: aqueous, methanolic, ethanolic, and acetone extracts. The phenolic compounds were characterized in these extracts by high-performance liquid chromatography, and their antibacterial activities were evaluated. The in vivo experiment was divided into four groups and received the following treatments: G1-silver sulfadiazine (positive control); G2-EEJS at 10%; G3-EEJS at 5%, and G4-EEJS at 2.5%. The aqueous extract did not inhibit the growing of any bacterium. The ethanolic, acetone, and methanolic extracts inhibited the growing of all bacteria tested at the concentrations of 1.25%, 2.50%, and 5.00%, respectively. The ethanolic extract was the one that showed the highest bacterial inhibition potential and the highest contents of phenolic compounds, especially of catechin, epicatechin gallate, and epicatechin. The G3 and G4 treatments presented faster wound healing compared to the G1 one, as it promoted a less intense inflammatory reaction and full closure of the wounds at an accelerated rate.

The cytotoxicity, anti-inflammation, anti-nociceptive and oral ulcer healing properties of coconut shell liquid smoke

“…A study showed that the doses of phenol around 10-15 mg/L had toxicity (29). Nevertheless, the CS-LS 1% as the lowest concentration, effectively prevented the growth of bacteria such as Escherichia coli, and Salmonella and prevented the production of histamine (30,31).…”

Nanofibrillated Cellulose-Based Aerogels Functionalized with Tajuva (Maclura tinctoria) Heartwood Extract

“…In this context, the mechanism of action of phenolic compounds on pathogenic bacteria is not yet well known. According to Machado and co-workers [33], tannins and flavonoids can inactivate enzymes due to the formation of complexes with proteins and cell wall from bacteria, changing their cell membrane permeability.…”

Myrcaulones A–C, Unusual Rearranged Triketone–Terpene Adducts from Myrciaria cauliflora

“…2 In addition, the bark and leaves of M. cauliflora are used to treat diarrhea. 3 Previous pharmacological studies on extracts of this plant showed antioxidative, 4,5 antibacterial, 6 antiinflammatory, 7 and cytotoxic activities. 8 Phytochemical investigations were mainly focused on its fruits, which led to the isolation of some phenolic derivatives.…”

“…In addition, the bark and leaves of M. cauliflora are used to treat diarrhea . Previous pharmacological studies on extracts of this plant showed antioxidative, , antibacterial, anti-inflammatory, and cytotoxic activities . Phytochemical investigations were mainly focused on its fruits, which led to the isolation of some phenolic derivatives. , As a continuation of investigations on structurally unusual and bioactive metabolites from Myrtaceae plants, − three rearranged triketone–terpene adducts with new skeletons, myrcaulones A–C ( 1 – 3 ), were obtained from the leaves of M. cauliflora .…”