scholarly journals Inhibitory Effects of Tea Leaf and Medicinal Plant Extracts on Enteric Pathogenic Bacteria Growth, Oxidation and Epithelial Cell Adhesion

2021 ◽  
Vol 14 (1) ◽  
pp. 71-81
Author(s):  
Thida Kaewkod ◽  
Wilaiporn Songkhakul ◽  
Yingmanee Tragoolpua
Keyword(s):  
Cell Adhesion ◽  
Epithelial Cell ◽  
Medicinal Plant ◽  
Plant Extracts ◽  
Pathogenic Bacteria ◽  
Inhibitory Effects ◽  
Bacteria Growth ◽  
Medicinal Plant Extracts ◽  
Tea Leaf

Study of monoamine oxidase inhibitory effects of seven Iranian medicinal plant extracts

2021 ◽  
Vol 10 (2) ◽  
pp. 187
Author(s):  
Maliheh Soodi ◽  
Mohsen Shamsi ◽  
Homa Hajimehdipoor ◽  
Alireza Ghazanfari
Keyword(s):  
Medicinal Plant ◽  
Monoamine Oxidase ◽  
Plant Extracts ◽  
Inhibitory Effects ◽  
Medicinal Plant Extracts

scholarly journals An evaluation of the RNase H inhibitory effects of Vietnamese medicinal plant extracts and natural compounds

2011 ◽  
Vol 49 (10) ◽  
pp. 1046-1051 ◽  
Author(s):  
Bui Huu Tai ◽  
Nguyen Duy Nhut ◽  
Nguyen Xuan Nhiem ◽  
Tran Hong Quang ◽  
Nguyen Thi Thanh Ngan ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Plant Extracts ◽  
Natural Compounds ◽  
Rnase H ◽  
Inhibitory Effects ◽  
Medicinal Plant Extracts

Inhibitory effects of Sudanese medicinal plant extracts on hepatitis C virus (HCV) protease

2000 ◽  
Vol 14 (7) ◽  
pp. 510-516 ◽  
Author(s):  
Ghazi Hussein ◽  
Hirotsugu Miyashiro ◽  
Norio Nakamura ◽  
Masao Hattori ◽  
Nobuko Kakiuchi ◽  
...  
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Medicinal Plant ◽  
Plant Extracts ◽  
Inhibitory Effects ◽  
Medicinal Plant Extracts ◽  
Hcv Protease

scholarly journals In Vitro Antibacterial Activities of Various Ethanolic Medicinal Plant Extracts Against Some Human Pathogenic Bacteria

2020 ◽  
Vol 8 (6) ◽  
pp. 1272-1276
Author(s):  
Samir K. Ali ◽  
Ghorbat S. Ali ◽  
Berivan Abdulrahman Abdullah
Keyword(s):  
Medicinal Plant ◽  
Plant Extracts ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Nigella Sativa ◽  
Antibacterial Activities ◽  
Diffusion Method ◽  
Bacterial Isolates ◽  
Foeniculum Vulgare ◽  
Medicinal Plant Extracts

The widespread use of antibiotics often causes increase in the bacterial drugs resistance and causes many side effects in humans. Medical plants have antimicrobial effects against most pathogenic bacteria and can serve as harmless replacement to antibiotics. The aim of this study was to assess the antibacterial effect of five medicinal plant prevailed in Kurdistan region namely; Cinnamon (Cinnamomum cassia (L.) D.Don), Nigella (Nigella sativa L.), Allium (Allium hirtifolium Boiss.), Carrot (Daucus carota L.), and Fennel (Foeniculum vulgare Mill.) against pathogenic Gram positive bacteria (Staphylococcus aureus), and pathogenic Gram negative bacteria (Salmonella typhi and Escherichia coli). The evaluation of antibacterial activity for these plant extracts was carried out using agar-well diffusion method. Results showed that minimum inhibitory concentration (MIC) of A. hirtifolium against tested bacterial isolates were (25 mg/mL), the lowest MIC values for S. aureus were (25 mg/mL) observed with C. cassia, N. sativa and F. vulgare ethanolic extracts and the lowest MIC of D. carota against bacterial isolates were (50 mg/mL), Also, it was observed that S. aureus was more sensitive than S. typhi and E. coli to plant extracts. The ethanol plant extracts had potential antibacterial activities. However, further studies are required to identify the active compounds which could be used for the preparation of new antimicrobial agents and control the bacterial infectious diseases.

scholarly journals Inhibitory Effects of Tropical Medicinal Plant Extracts on Urea Hydrolysis and Nitrification in Soil: A Preliminary Study

HortScience ◽  
2015 ◽  
Vol 50 (5) ◽  
pp. 744-749
Author(s):  
Muqiu Zhao ◽  
Huaibao Zhao ◽  
Qianjin Du ◽  
Yunfeng Shi
Keyword(s):  
Medicinal Plant ◽  
Plant Extracts ◽  
Total Solid ◽  
Water Soluble ◽  
Melia Azedarach ◽  
Ammonia Oxidizing Bacteria ◽  
Inhibitory Effects ◽  
Plant Materials ◽  
N Transformation ◽  
Medicinal Plant Extracts

Hydrolysis and nitrification are the key steps of biological transformation of urea in soils, which control the loss of nitrogen (N) in terrestrial ecosystem. The inhibitory effects of plant materials on N transformation provide potential benefits for agricultural production and environmental protection. In this study, water-soluble and ethanol-soluble compounds were extracted from 24 tropical medicinal plant species in Hainan Island, southern China, with the aim of measuring their effects on urease activity (UA), nitrification potential (NP), and ammonium oxidizer number in a paddy soil, by a series of short (5 hours) and long-term (14 days) incubation experiments. Total solid yields and phenols contents of 48 medicinal plant extracts were also analyzed in this study. There were big differences in total solid yield and phenols content among the extracts of the selected tropical medicinal plant extracts. The phenols content of the plant extracts varied from 15.1 to 273.4 mg GAE/g extract (milligrams of gallic acid equivalents per gram of extract). A significant relationship between UA and NP of the soil treated with plant extracts and their phenols content was found, indicating that phenolic compounds are the major contributors to the inhibitory properties of these plants. Further studies indicated that the water extracts of Epimeredi indica aerial and Melia azedarach leaf, containing a high content of phenols, exhibited notable urease and nitrification inhibitory effects and reduced the number of soil ammonia–oxidizing bacteria, being promising sources of natural inhibitors for soil N transformation.

scholarly journals Towards Advances in Medicinal Plant Antimicrobial Activity: A Review Study on Challenges and Future Perspectives

2021 ◽  
Vol 9 (10) ◽  
pp. 2041
Author(s):  
Natalia Vaou ◽  
Elisavet Stavropoulou ◽  
Chrysa Voidarou ◽  
Christina Tsigalou ◽  
Eugenia Bezirtzoglou
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Medicinal Plant ◽  
Plant Extracts ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Mechanisms Of Action ◽  
Future Perspectives ◽  
Pharmacodynamic Profile ◽  
Medicinal Plant Extracts

The increasing incidence of drug- resistant pathogens raises an urgent need to identify and isolate new bioactive compounds from medicinal plants using standardized modern analytical procedures. Medicinal plant-derived compounds could provide novel straightforward approaches against pathogenic bacteria. This review explores the antimicrobial activity of plant-derived components, their possible mechanisms of action, as well as their chemical potential. The focus is put on the current challenges and future perspectives surrounding medicinal plants antimicrobial activity. There are some inherent challenges regarding medicinal plant extracts and their antimicrobial efficacy. Appropriate and optimized extraction methodology plant species dependent leads to upgraded and selective extracted compounds. Antimicrobial susceptibility tests for the determination of the antimicrobial activity of plant extracts may show variations in obtained results. Moreover, there are several difficulties and problems that need to be overcome for the development of new antimicrobials from plant extracts, while efforts have been made to enhance the antimicrobial activity of chemical compounds. Research on the mechanisms of action, interplay with other substances, and the pharmacokinetic and/or pharmacodynamic profile of the medicinal plant extracts should be given high priority to characterize them as potential antimicrobial agents.

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