Tetraclinis is an unexplored genus recognized for its great bioactive potential that could be explored as a medicinal herb. The aim of this study was to evaluate the antioxidant, antibacterial, anti-inflammatory and cytotoxic properties of the aqueous crude extract and subsequent organic fractions of the Algerian medicinal plant T. articulata. Moreover, polyphenols were also fully profiled by liquid chromatography with diode-array detection coupled to electrospray ionization in tandem with mass spectrometry (LC-DAD-ESI-MS n). The analysis of the obtained results show that B-type (epi)catechin dimer and catechin were the most abundant phenolic compounds present among the nine different flavonoids identified such as: ((epi)catechin, myricetin, quercetin and kaempferol glycoside derivatives). The concentration of phenolic compounds in the ethyl acetate fraction (93.1 mg/g extract) was higher than the one of the aqueous extract (21.2 mg/g extract) and butanol fraction (43.87 mg/g extract). Furthermore, the ethyl acetate fraction revealed the strongest bioactive properties, revealing the lowest EC 50/ GI 50 values: anti-inflammatory (EC 50, 129.67 μg/mL), cytotoxicity against human tumor cell lines (GI 50 , 59-189 μg/mL), antibacterial (MIC, 0.625-10 mg/mL); and especially the antioxidant capacity (EC 50 values lower than 12.7 μg/mL), even higher than the standard (Trolox). The results showed a great bioactive potential for this species, with a significant contribution of flavonoid compounds, which makes it an interesting matrix in the development of novel pharmaceutical formulations.

Edible Ammodaucus leucotrichus Cross. & Dur. and Moringa oleifera Lamarck are largely used in the Algerian Sahara. In this context, soluble sugars, fatty acids, organic acids, and tocopherols were characterized. Decoctions and hydroethanolic extracts were studied regarding their phenolic compounds by HPLC-DAD-ESI/MSn, and invitro cytotoxic, anti-inflammatory, and antibacterial activities were evaluated. Results indicate high contents of carbohydrates (glucose and sucrose) and significant levels of protein and mineral were recorded for both plants. Malic acid was the major organic acid alongside with α-tocopherol, while PUFA was predominant in M. oleifera and MUFA in A. leucotrichus. Flavonoid derivatives were the most abundant group, being luteolin-O-(malonylglucoside) the main compound in A. leucotrichus and quercetin-3-O-(6″-malonyl-glucoside) and 3-O-caffeoylquininc acid the major molecules in M. oleifera. Extracts exhibited significant cytotoxicity on Hela and MCF-7 cell lines. The anti-inflammatory activity was also higher in the hydroethanolic extracts, which also revealed the highest antibacterial effects, especially for Gram-positive bacteria. leucotrichus Coss. & Dur. (Apiaceae) is an endemic plant in North Africa and is widely used in traditional medicine, especially in the southern Algerian Sahara and Tassili regions (Louail et al., 2016). Leaves and seeds of this plant are consumed in the form of infusions and/or decoctions for several therapeutic cases, such as liver and digestive system ailments, gastroenteritis, diabetes, as also for blood pressure and chest pain (Halla, Boucherit, Boucherit-otmani, Zohra, & Rahmani, 2018; Louail et al., 2016). The fruits are often used as a spice during culinary preparation, and leaves are used as a flavoring herbal in teas (Halla et al., 2018; Louail et al., 2016). Nevertheless, most phytochemical and biological studies on A. leucotrichus are related to the volatile compounds from the essential oils (Gherraf et al., 2017; Halla et al., 2018), and few scientific studies have been conducted towards the phenolic compounds and their functional properties. According to a recent study conducted by Halla, Heleno, Costa, Fernandes, Calhelha, Boucherit, Rodrigues, Ferreira, and Barreiro (2018) using colorimetric reactions, flavonoids, condensed and hydrolysable tannins, coumarins, alkaloids, and terpenoids were found in the Algerian A. leucotrichus aqueous extract obtained by decoction and in the hydromethanolic extract. El Haci, Mazari, Gherib, and Atik Bekkara (2018) reported moderate

No abstract

No abstract