@article {696, title = {Antioxidant Activities, Acute Toxicity and Chemical Profiling of Torch Ginger (Etlingera elatior Jack.) Inflorescent Extract}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {August 2018}, pages = {979-982}, type = {Original Article}, chapter = {979}, abstract = {

Aim/Background: The objectives of the study were to determine total phenolic contents, flavonoid contents, antioxidant activities and assess acute toxicity of torch ginger (Etlingera elatior Jack.) inflorescent hydroethanolic extract. Methods: The analysis of total phenolic contents, total flavonoid contents and antioxidant activities were analyzed spectrophotometrically using micro-titer plate reader. With regard to acute toxicity assessment, Wistar rats were fed with a single dose of torch-ginger either 1.0, 1.5 or 2.0 g extract/kg body weight in comparison with control group. Results: Total phenolic contents, flavonoid contents of the extract were 0.17\±0.02 mM gallic acid equivalent/g extract and 0.30\±0.01 mM quercetin equivalent/g extract, respectively. The antioxidant evaluation using DPPH radical scavenging assay, FRAP assay and ABTS radical scavenging assay were 0.14\±0.08 mg/ml (EC50), 0.13\±0.01 mmol Fe2+ equivalent/g extract and 0.30\±0.12 mM trolox equivalent/g extract, respectively. According to acute toxicity, no mortality or bizarre behavior had been observed throughout 14 days. Clinical chemistry including blood glucose, AST, ALT, BUN, creatinine, total cholesterol, triglyceride, HDL, LDL, total serum protein, albumin, globulin and total bilirubin were in normal ranges and comparable to the control (p\<0.05). In conclusion, phenolic compounds and flavonoids of torch-ginger could be measured and indicated the quality of the extract as well as antioxidant activities. Regarding acute toxicity assessment, the extract was safe for experimental animals up to 2.0 g extract/kg body weight. Conclusion: Torch-ginger extract exhibited high amounts of phenolic contents, flavonoid contents, antioxidant activities and was safe in animal model.

}, keywords = {Acute toxicity, Antioxidant Activities, Torch ginger, Total flavonoid contents, Total Phenolic Contents}, doi = {10.5530/pj.2018.5.166}, author = {Bunleu Sungthong and Buavaroon Srichaikul} } @article {429, title = {Chemo-profiling, Antioxidant Potential and Ionomic Analysis of Cichorium intybus L.}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {September 2017}, pages = {917-928}, type = {Original Article}, chapter = {917}, abstract = {

Background: Cichorium intybus commonly called as chicory or coffee weed was traditionally used for the treatment of various ailments associated with liver, kidney and heart. The aim of the present study was phytochemical screening, in-vitro evaluation of antioxidant potential, element analysis of wild and cultivated chicory and GC-MS analysis of methanolic leaf extract of wild chicory grown in Kashmir Himalaya. Method: To achieve this goal, the qualitative and quantitative analysis was done to determine the antioxidant potential. Element analysis was done using AAS and metabolite fingerprinting was done using GC-MS to ascertain the presence of active phytoconstituents in chicory leaves. Results: The qualitative screening of leaf extracts from wild and cultivated chicory indicates the presence of important bioactive constituents. The leaf extract of wild chicory constituted the higher amount of total phenol and flavonoid contents and also showed strong radical scavenging activities of DPPH, SOD and hydrogen peroxide radical as indicated by lower values of IC50 compared to cultivated chicory. Furthermore, both extracts of wild chicory showed the highest total antioxidant potential for the reduction of Fe3+ to Fe2+ when compared with cultivated chicory. The results from the elemental analysis shows that leaf extract of wild chicory exhibits higher concentration of elements as compared to cultivated one, thus can be used as a potential bio-fortified crop. The GC-MS analysis determines the presence of 78 different compounds in the methanolic leaf extract of wild chicory. The major phytochemical constituents were phytol (7.96\%) and stigmat-5-en-3-ol (6.45\%). Conclusion: The findings of the present study suggested the therapeutic potential of chicory leaves; particularly wild chicory proves to be a potent source of natural antioxidant against free radical associated damages. Metabolite profiling study revealed important metabolites having potent pharmacological actions.

}, keywords = {Aas, Antioxidant Activities, Cichorium Intybus, GC-MS., Phytochemical analysis}, doi = {10.5530/pj.2017.6.144}, url = {http://fulltxt.org/article/197}, author = {Bisma Malik and Tanveer Bilal Pirzadah and Inayatullah Tahir and Reiaz Ul Rehman} } @article {1491, title = {Evaluation of Antioxidant Activity of Five Medicinal Plants in Sri Lanka.}, journal = {Pharmacognosy journal}, volume = {6}, year = {2014}, month = {8th April 2014}, pages = {49-54}, type = {Original Article}, abstract = {

This study investigated on the antioxidant properties of five medicinal plants used in Sri Lanka, namely Solanum nigrum, Amaranthus spinosus, Elephantopuss caber, Amorphophallus campanulatus and Canna indica. The cold methanol plant extracts were screened for the antioxidant activity evaluating their 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical in scavenging ability. The total ascorbic acid content of the extracts was also evaluated. The IC50 values of the extracts revealed that Solanum nigrum had the best DPPH scavenging activity with a value of 37.63 \± 0.11\μg/ml and was better than that of the standard ascorbic acid. Amorphophallus campanulatus extract gave the highest ascorbic acid content of 143.03 \± 1.97 mg per 100 g of the extract. All five plants extract showed DPPH scavenging activity in the order of Solanum nigrum \> Elephantopus scaber\> Amorphophallus campanulatus\> Canna indica. The plant extracts did not show a direct correlation between the ascorbic acid content to the DPPH scavenging activity. These experimental results reveals that these extracts can be utilized in future as therapeutic agent against free radical induced oxidative stress.

Key words: Antioxidant activities, Ascorbic acid, DPPH, Medicinal Plants.

}, keywords = {Antioxidant Activities, Ascorbic acid, DPPH, Medicinal plants}, author = {K. N. Mahesh, and M. N. Wickramaratne, and D. B. M. Wickramaratne} }