Screening of Uruguayan medicinal plants for antimicrobial activity

Antimicrobial activity and toxicity of Syzygium australe and Syzygium leuhmannii fruit extracts

“…The ability of the leaf extracts to inhibit the growth of both Gram-positive and Gram-negative bacteria is in agreement with previous reports of the antibacterial activity of other Syzygium spp. [10,[31][32][33] The greater susceptibility of Gram-positive bacteria seen in this study agrees with the previously reported specificities of South American, [34] African [35] and Australian [36] plant extracts. Results within this laboratory have also confirmed the greater susceptibility of Gram-positive bacteria towards other Australian plant extracts.…”

Antibacterial Activity of <i>Ulva fasciata</i> against Multidrug Resistant Bacterial Strains

“…Taskin et al (2001) reported that similar observations, indicating that the more susceptibility of Gram-positive bacteria to the algal extract was due to the differences in their cell wall structure and their composition (Paz et al, 1995). The resistance of gram…”

Antibacterial Activity of Selected Australian Native Plant Extracts

“…No mention is made in the Palombo and Semple report (2001) of the concentrations of extracted material tested so the possibility exists that lower doses were used in those studies. However, the concentrations tested in this study were comparable to the 36 mg/ml extracts used by Kudi et al (1999) and the 10mg/ml extracts tested by Paz et al (1995) and are substantially lower than the doses tested (100 mg/0.2ml) by Vlietinck et al (1995).…”

“…The antibacterial activity of B. citriodora is well known (Dupont et al, 2006;Wilkinson et al, 2003) and recent studies have reported on the antibacterial activity of extracts from a different species of Callistemon (C. rigidus) (Sanjai and Charu, 2006). bacteria has been previously reported for South American (Paz et al, 1995), African (Kudi et al, 1999;Vlietinck et al, 1995) and Australian (Palombo and Semple, 2001) plant extracts. Susceptibility differences between Gram-positive and Gram-negative bacteria may be due to cell wall structural differences between these classes of bacteria.…”