Department of Plant Biology, Faculty of Sciences, University of Naples Federico II, Naples, Italy.
Int J Antimicrob Agents. 1997;8(3):199-203. doi: 10.1016/s0924-8579(97)00376-2.
The antibacterial activity of extracts from various parts of plants (leaves, fruits and stems) was studied in Actinidia chinensis, Feijoa sellowiana and Aberia caffra. These are tropical plants used for food. The fruits (subdivided into skin, pulp and seeds), leaves and stems were separately extracted and tested, in triplicate, against eight Gram positive and Gram negative bacterial strains. All the extracts, except from the leaves of A. caffra, showed activity against all the strains employed. Inhibition of bacterial growth was tested against Na-cefotaxime, benzyl penicillin and tetracycline. The antibiotic activity of fruit resides essentially in the seeds. The antibacterial activity of extracts from vegetative plant parts was generally less active that from fruit extracts. The minimum inhibiting concentration (MIC) and minimum bactericidal concentration (MBC) were determined for all the extracts and showed exclusively bacteriostatic activity.
研究了猕猴桃、费约果和非洲茶的植物各部位（叶、果和茎）提取物的抗菌活性。这些热带植物都可食用。将果实（细分为果皮、果肉和种子）、叶片和茎分别提取并进行了三次重复实验，以检测它们对八种革兰氏阳性和革兰氏阴性菌的抑制作用。除了非洲茶的叶片提取物之外，所有提取物均对所有实验菌株都表现出了活性。采用头孢噻肟、苄青霉素和四环素测试了对细菌生长的抑制作用。果实的抗菌活性主要存在于种子中。植物营养器官提取物的抗菌活性通常不如果实提取物强。所有提取物的最小抑菌浓度（MIC）和最小杀菌浓度（MBC）都进行了测定，显示出了单纯的抑菌活性。
