@article {1031, title = {The Effect of Ultraviolet-B Radiation Exposure on Hibiscus cannabinus Linn with its Phytochemical and Pharmacological Responses}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {November 2019}, pages = {1540-1543}, type = {Research Article}, chapter = {1540}, abstract = {

Aim: Exposure of UV-B Radiation on\ Hibiscus cannabinus Linn and to evaluate both Phytochemical and Pharmacological responses. Objective: UV-B can increase the nutrients contents from plants, plants become tastier and increases the yield and UV-will make plants resistant to fungal infections and stimulate the production of phytomarkers. Material and Methods: Hibiscus cannabinus Linn seeds were soaked with 50\% H2O2 for 12 hours and then inoculated with the Azospirillum. UV-B radiation cabinet was provided by UV lamps which are above 15 cm from control maintained. Normal daylight exposed control group Seedlings irradiated for 2 hour per day (12.30 pm to 2.30 pm) for 20 days. Results and Discussion: 20 days treatment increases total phenolic contents and sugars content were decreased in uncovered leaf tissue. Protein content was at first diminished but expanded on the 20 day of UV-B treatment. Also, perform pharmacological studies no toxic elements are observed 20 days treatment and pharmacological activity by using anticancer activity by using human colon HT-29 cancer cell line. UV light exposed plants shows good anticancer activity when compared with non UV exposed Plant.

}, keywords = {Cancer cells line HT-29, Hibiscus cannabinus Linn, Total Phenolic Contents, UV-B radiation}, doi = {10.5530/pj.2019.11.235}, author = {T Sundarrajan and V Velmurugan and MK Kathiravan and K Manikandan and KS Lakshmi and MR Ganesh} } @article {960, title = {Evaluation of Antioxidant Activity and Phytochemical Screening of Leaves, Barks, Stems and Fruits of Alphitonia philippinensis (Rhamnaceae) From Brunei Darussalam}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {September 2019}, pages = {951-961}, type = {Original Article}, chapter = {951}, abstract = {

Phytochemical screening of Alphitonia philippinensis extracts revealed the presence of cardiac glycosides, tannins, saponins and steroids in different plant parts. Total phenolic content (TPC), total flavonoid content (TFC) and total flavonol content (TFlC) were measured using spectrophotometric methods where gallic acid and quercetin were the standards. Antioxidant activity of extracts was assessed using 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2̉-azino-bis(3- ethylbenzothiazoline-6-sulfonic acid) (ABTS), free radical scavenging and ferric reducing antioxidant power (FRAP) assays using ascorbic acid and trolox were used as standards. Among the four different crude methanol extracts studies, leaves showed highest antioxidant capacity. EC50 values of the leaves extract from DPPH and ABTS method found 32 and 45 μg/mL respectively. The higher antioxidant activity of the leaves extract could be correlated with the presence of higher total phenolic content, total flavonoid, and total flavonol contents. According to antioxidant contents and assay results leaves extract possesses highest antioxidant property following fruits, barks and stems.

}, keywords = {Antioxidant property, philippinensis, Phytochemical investigation, Total Phenolic Contents}, doi = {10.5530/pj.2019.11.151}, author = {Jamiuddin Ahmed and Kamariah Abu Salim and Linda B.L. Lim and Abdalla Mohamed Jama} } @article {1017, title = {Free Radical Scavenging Capacity and Total Phenolic Contents in Peel and Fleshy Crude Extracts of Selected Vegetables}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {October 2019}, pages = {1351-1358}, type = {Research Article}, chapter = {1351}, abstract = {

Context: Vegetables are sources of natural antioxidants which have beneficial health-promoting properties. Aims: This research was conducted to evaluate the antioxidant potentials and total phenolic contents in vegetable extracts. Settings and Design: The experiment was divided two groups using six vegetable peels and fleshes, including potato (Solanum tuberosum L.), carrot (Daucus carota L.), bitter gourd (Monordica Charantia L.), pumpkin (Cucurbita moschana Duchesn), Chinese radish (Raphanus sativus L.), and cucumber (Cucumis sativus L.). Materials and Methods: The samples were extracted with 95\% ethanol for 24 hrs and then analyzed the antioxidant activities by DPPH and FRAP assay and total phenolic contents was determined by Folin-Ciocalteu assay. Statistical analysis used: All the analysis was done in triplicate, and values are represented as means {\textpm} standard deviations. The data were subjected to one-way analysis of variance (ANOVA) and significance differences between mean values were determined by Tukey{\textquoteright}s multiple comparison tests (p \< 0.05). Pearson correlation coefficient was determined between the antioxidant activities and total phenolic contents using SPSS version 21. Results: The results revealed that antioxidant activities were different statistically significant in each group (p \< 0.05). Carrot peel was the most potent in DPPH radical scavenging activity (61.80 {\textpm} 6.14\%) and reducing power (0.75 {\textpm} 0.25 mM Fe2+/g extract) and potato flesh could inhibit DPPH radical (35.60 {\textpm} 0.63 \%) and had the highest FRAP value (0.61 {\textpm} 0.78 mM Fe2+/g extract). Pumpkin peel and Chinese radish flesh had the most total phenolic contents as 110.45 {\textpm} 22.49 and 142.15 {\textpm} 3.53 mg GAE/g extract, respectively. Although no correlations was between antioxidant activities and total phenolic contents in extracts but were significant correlations between DPPH and FRAP assay in vegetable peels and fleshes as 0.931 and 0.819, respectively. Conclusion: This study substantiates the potential of vegetable peels to be used as functional foods and natural free radical scavengers.

}, keywords = {Antioxidants, Free Radicals, Total Phenolic Contents, Vegetable fleshes, Vegetable peels}, doi = {10.5530/pj.2019.11.209}, author = {Chanate Wanna} } @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 {676, title = {The Effect of Coconut Water and Boiling on Antioxidant Activity and Total Phenolic Contents in Schizophyllum commune Fr.}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {August 2018}, pages = {925-931}, type = {Original Article}, chapter = {925}, abstract = {

Context: Schizophyllum commune Fr., a split gill mushroom has been acknowledged for its medicinal properties.\  Aims: The present study was to evaluate the effect of coconut water and boiling on antioxidant activity and total phenolic contents in Schizophyllum commune Fr. Settings and Design: The experiment was completely randomized design (CRD) using tender and mature coconut water compared to synthetic hormone at concentration of 50\% and 100\% in volume of 5 and 10 ml. The first group is fresh mushrooms and the second group is boiled mushroom then was dried in hot air oven at 45\°C for 48 hr. Materials and Methods: The S. commune was extracted with ethanol and then was evaluated the scavenging activity by DPPH and FRAP assay and Folin-Ciocalteau method was used to determine total phenolic contents. Statistical analysis used: The data were recorded as means \± standard deviations and analyzed by using SPSS version 21. The mean values of data were subjected to a oneway analysis of variance (ANOVA) and the significance of the difference between means was determined by the Tukey\’s multiple comparison tests at 95\% least significance difference (p \< 0.05). Pearson correlation coefficient was used to determine the relationship between the antioxidant activity and total phenolic contents in sample extracts. Results: In fresh mushroom group showed higher antioxidant activity and total phenolic contents than boiled mushroom group. When compared to a loss of antioxidant activity and total phenolic contents after boiling only the experiments with coconut water found that tender coconut water 50\% of 5 ml has the lowest of loss in TEAC and total phenolic contents as 9.28\% and 9.85\% respectively. Mature coconut water 100\% of 10 ml has the lowest of loss in FRAP as 2.77\% and followed by tender coconut water 50\% of 5 ml as 4.82\% which were lower than control treatment but similar with synthetic hormone of 5 ml. The relationship between antioxidant activity and total phenolic contents of mushrooms was low in both groups. Conclusions: It concluded that tender coconut water 50\% of 5 ml could maintain the antioxidant properties and total phenolic compounds in S. commune.\ 

}, keywords = {Antioxidant, Coconut water, Free Radicals, Schizophyllum commune Fr, Total Phenolic Contents}, doi = {10.5530/pj.2018.5.156}, author = {Chanate Wanna and Montarop Sudhadham} } @article {430, title = {Total Phenolic Contents and Free Radical Scavenging Activity of Guaiacum officinale L. Extracts}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {September 2017}, pages = {929-931}, type = {Original Article}, chapter = {929}, abstract = {

Backgound: Guaiacum officinale L. is an alien species to Thailand. It is used as anti-arthritis and anti-rheumatoid agents in Indian folklore medicine. Objective: The present study was aimed to investigate total phenolic contents and free radical scavenging activity of the extracts from Guaiacum officinale L. (Zygophyllaceae). Methods: The plant parts including bark, twig and leaf were extracted using different solvents (ethyl acetate, water and ethanol). Total phenolic contents were determined by Folin-Ciocalteu Colorimetry method while free radical scavenging activity of the extracts was investigated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity assay. Results: The results show that the highest total phenolic content is found in the ethyl acetate twig extracts (20.3\±0.0031 \μg GAE/1 \μg extracts). The ethanolic twig extracts had the highest free radical scavenging activity with IC50 of 0.45\±0.0188 mg/ml. Conclusion: The extracts from Guaiacum officinale L. exhibit good anti-oxidant activity and may be suitable for development as drugs and supplementary food.

}, keywords = {Ethanolic twig extracts, Ethyl acetate twig extracts., Free Radical Scavenging Activity, Guaiacum Officinale L, Total Phenolic Contents}, doi = {10.5530/pj.2017.6.145}, url = {http://fulltxt.org/article/198}, author = {Suthira Maneechai and Vachiraporn Pikulthong} }