chemical constituents
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2022 ◽  
Vol 14 (10) ◽  
pp. 5187-5189
Noor Ali ◽  
Ibrahim S. Al-Jobouri ◽  
Widad M K Al-Ani

Evaluation of Iraqi medicinal plants is very crucial to help people avoid the use of herbs without prior knowledge which results in many side effects and sometimes even leads to death. The plant constituents vary according to season, weather and type of soil, therefore it is necessary to evaluate the chemical constituents and determine the time of collection of medicinal plants. In this research evaluation of the medicinal plant Calendula officinal grown in Iraq was performed by measuring the quantity of hyperoside found in the plant together with macroscopical and microscopical evaluation of the plant.

2023 ◽  
Vol 83 ◽  
T. S. Neri ◽  
K. W. L. Silva ◽  
L. P. S. Maior ◽  
S. K. Oliveira-Silva ◽  
P. V. M. Azevedo ◽  

Abstract Croton argyrophylloides Muell. Arg., from the Euphorbiaceae family, popularly known as marmeleiro prateado or sacatinga, is a plant from the Caatinga biome commonly found in Brazil’s northeastern region. The present study aimed to evaluate the antioxidant activity of the species. The phytochemical study was performed through qualitative analysis of chemical constituents and quantitative determination of the total phenol content through the Folin-Ciocalteu test. The qualitative and quantitative antioxidant tests were performed using the DPPH method (2.2 diphenyl-1-picryl hydrazil) and ferric reducing antioxidant power (FRAP). The minimum inhibitory concentration (MIC) was determined by microdilution in 96-well plates. The ethanolic extract of the leaves of C. argyrophylloides manifested antioxidant action in the quantitative DPPH test with a significant bioactivity of 84.70 AAO% in 500 µg/mL, with an EC50 of 236.79. The content of total phenolic compounds was 946.06 mg of gallic acid equivalents/g of sample, and total flavonoids was 58.11 mg of quercetin equivalents/g of sample, the result obtained for FRAP was 15294.44 µM Trolox/g of sample and ABTS was 718 μM Trolox of sample. The prospecting of the chemical constituents of the leaves of C. argyrophylloides revealed the presence of the main compounds that manifests the antioxidant activity and it was proven by the DPPH method that there is antioxidant activity in the analyzed sample, in addition to demonstrating a significant content of phenolic compounds and total flavonoid content in the species, which corroborates the antioxidant activity of the plant sample. The leaf extracts presented growth inhibition halos of 10 and 12 mm upon Staphylococcus aureus ATCC 25923.

2022 ◽  
Vol 100 ◽  
pp. 104360
Jingyi Zhang ◽  
Kumaravel Kaliaperumal ◽  
Ziyue Liu ◽  
Jun Zhang

2022 ◽  
Vol 100 ◽  
pp. 104377
Hang Xu ◽  
Le Zhou ◽  
Meizhi Wang ◽  
Lina Wei ◽  
Haijun Qu ◽  

2022 ◽  
Vol 100 ◽  
pp. 104376
Le Thi Huyen ◽  
Vu Hoang Son ◽  
Truong Thi Viet Hoa ◽  
Luong Thi My Hanh ◽  
Seo Yohan ◽  

2022 ◽  
Vol 100 ◽  
pp. 104373
Nathalie S. Jouwa Tameye ◽  
Carine Mvot Akak ◽  
Georges Bellier Tabekoueng ◽  
Pierre Mkounga ◽  
Gabin Thierry M. Bitchagno ◽  

2022 ◽  
Vol 100 ◽  
pp. 104371
Changwei Song ◽  
Chunbo Yu ◽  
Ying Qin ◽  
Jing Hui ◽  
Yong Zhang ◽  

2022 ◽  
Vol 284 ◽  
pp. 114778
Rafaela Cunha Matosinhos ◽  
Juliana Pantaleão Bezerra ◽  
Camila Helena Barros ◽  
Ana Catharina Fernandes Pereira Ferreira Bernardes ◽  
Grazielle Brandão Coelho ◽  

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