scholarly journals Phenolic Compounds from Carissa spinarum Are Characterized by Their Antioxidant, Anti-Inflammatory and Hepatoprotective Activities

Antioxidants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 652
Author(s):  
Ye Liu ◽  
Yongli Zhang ◽  
Felix Wambua Muema ◽  
Festus Kimutai ◽  
Guilin Chen ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Vitamin C ◽  
Cell Injury ◽  
Positive Control ◽  
Root Bark ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Ic50 Values ◽  
Cox 2 ◽  
Anti Inflammatory

Carissa spinarum has been traditionally used for the treatment of various diseases due to its different pharmacological activities. However, the active compounds responsible for its potentially specific activities have rarely been explored. To this end, the ethyl acetate (EA) fraction was screened out and selected for further phytochemical isolation because of its promising activities in preliminary 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) and COX-2 inhibition assays. As a result, 10 compounds (1−10), including a new one (5), were isolated, with eight of these being identified as phenolic compounds, as expected. Compound 9 possessed an IC50 value of 16.5 ± 1.2 µM, which was lower than that of positive control (vitamin C, 25.5 ± 0.3 µM) in the DPPH assay, and compounds 2, 6, 7 and 9 showed better total antioxidant capacity than vitamin C in the FRAP assay. Meanwhile, compounds 1−6 and 9 also had IC50 values of less than 1.0 µM, which was even better than the positive control indomethacin in the COX-2 inhibition assay. In this context, compounds 2 and 9 were further evaluated to exhibit clear hepatoprotective activities by improving the L02 cell viability and reducing ROS production using a H2O2-induced L02 cell injury model. This study provides initial evidence revealing the most potent phenolic compounds from the root bark of C. spinarum responsible for its antioxidant, anti-inflammatory and hepatoprotective activities.

Biological characterization and preliminary crystallization: A step towards the use of Novel Allium sativum Protease inhibitor as a potential therapeutic drug

2021 ◽  
Vol 17 ◽  
Author(s):  
Tooba Naz Shamsi ◽  
Sumbul Afreen ◽  
Romana Parveen ◽  
Manish Kumar ◽  
Tasneem Fatma ◽  
...  
Keyword(s):  
Protease Inhibitor ◽  
Allium Sativum ◽  
Radical Scavenging ◽  
Therapeutic Drug ◽  
Frap Assay ◽  
Antioxidant Power ◽  
E Coli ◽  
Ic50 Values ◽  
Pharmaceutical Industries ◽  
Anti Inflammatory

Background: Garlic, being a well-known medicinal plant is the most commonly used culinary spice worldwide. Investigation of protease inhibitor isolated from garlic leads to a promising contender in pharmacognostic and pharmacological studies. Objective/Introduction: Protease Inhibitor (PI) from 'garlic' (Allium sativum) was analyzed for its biological role as an antioxidant, antimicrobial, and anti-inflammatory agent. Methods: Antioxidant activity was evaluated using ferric ion reducing antioxidant power (FRAP) and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assays. The anti-inflammatory activity was assessed using trypsin inhibitory assay and heat-induced albumin denaturation method. The antimicrobial activity was examined in broth against E. coli and B. Subtilis. The crystallization was setup using the hanging drop method. Results: ASPI showed DPPH radical scavenging with IC50 values 561±0.337 µg/ml. Also, ASPI showed the highest value of 0.699±0.009 mM at 1000 μg/ml and the lowest i.e. 0.181±0.006 mM at 100 μg/ml in FRAP assay. Ascorbic acid was taken as standard in both cases. ASPI showed IC50 values of 651±0.532 μg/ml and ~657±1.802 μg/ml respectively. The antibacterial role of ASPI was testified and results showed maximum inhibition against E. coli (ATCC 25922) i.e., 87.8 ±0.602% but no inhibition against B. subtilis (MTCC 736). Cuboidal shaped crystals of the ASPI were obtained in 4-6 weeks using 0.2M calcium chloride dihydrate, 0.1M sodium acetate trihydrate, 20 % isopropanol. Conclusion: ASPI has tremendous potential for the development of suitable drugs in pharmaceutical industries against diseases due to the generation of reactive oxygen species and cancer. The cuboidal crystals were obtained which is the first study in the context of crystallization of ASPI to date.

scholarly journals Phenolic Composition, Antioxidant Capacity and Antibacterial Activity of White Wormwood (Artemisia herba-alba)

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 164
Author(s):  
Muthanna J. Mohammed ◽  
Uttpal Anand ◽  
Ammar B. Altemimi ◽  
Vijay Tripathi ◽  
Yigong Guo ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Soxhlet Extraction ◽  
Hydroxyl Group ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Antimicrobial Effects ◽  
Dpph Method ◽  
Ic50 Values ◽  
Fraction I

Artemisia herba-alba Asso. (Wormwood) is a wild aromatic herb that is popular for its healing and medicinal effects and has been used in conventional as well as modern medicine. This research aimed at the extraction, identification, and quantification of phenolic compounds in the aerial parts of wormwood using Soxhlet extraction, as well as characterizing their antimicrobial and anitoxidant effects. The phenolic compounds were identified in different extracts by column chromatography, thin layer chromatography (TLC), and high performance liquid chromatography. Five different fractions, two from ethyl acetate extraction and three from ethanolic extraction were obtained and evaluated further. The antimicrobial activity of each fractions was evaluated against two Gram-positive (Bacillus cereus and Staphylococcus aureus) and two Gram-negative microorganisms (Escherichia coli and Proteus vulgaris) using the disc-diffusion assay and direct TLC bioautography assay. Fraction I inhibited B. cereus and P. vulgaris, Fraction II inhibited B. cereus and E. coli, Fraction III inhibited all, except for P. vulgaris, while Fractions IV and V did not exhibit strong antimicrobial effects. Their antioxidant capabilities were also measured by calculating their ability to scavenge the free radical using DPPH method and the ferric reducing antioxidant power (FRAP) assay. Ethanolic fractions III and V demonstrated excellent antioxidant properties with IC50 values less than 15.0 μg/mL, while other fractions also had IC50 values less than 80.0 μg/mL. These antioxidant effects were highly associated with the number of phenolic hydroxyl group on the phenolics they contained. These extracts demonstrated antimicrobial effects, suggesting the different phenolic compounds in these extracts had specific inhibitory effects on the growth of each bacteria. The results of this study suggested that the A. herba-alba can be a source of phenolic compounds with natural antimicrobial and antioxidant properties which can be used for potential pharmaceutical applications.

scholarly journals Antioxidant Activity Tests of Extract of Principle Crafts (Phaleria macrocarpa)

2020 ◽  
Vol 8 (3) ◽  
pp. 125-129
Author(s):  
Tri Putri ◽  
Anang W. M. Diah ◽  
Afadil Afadil
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Positive Control ◽  
Degenerative Diseases ◽  
Fruit Extract ◽  
Antioxidant Power ◽  
Ic50 Value ◽  
Ic50 Values ◽  
Phaleria Macrocarpa ◽  
Central Sulawesi

Phaleria macrocarpa contains secondary metabolite compounds such as alkaloids, terpenoids, saponins, polyphenols, tannins, sterols, and coumarins. Those metabolites are antioxidants and can be efficacious in the healing of various degenerative diseases such as cervical cancer and diabetes. This plant is widely grown in Tindaki Village, Parigi Mautong, Central Sulawesi. The aim of this study was to determine the antioxidant power of those phaleria macrocarpa fruit extract. This study was conducted by using maceration extraction technique with ethanol as solvent, and compound 2,2-difenil-1-picrilhidrazil (DPPH) as source of free radical, and vitamin C as the positive control. The UV-Vis spectrophotometer was used to measure the absorbance of the extract. Various concentrations of the extract used were 5 ppm, 15 ppm, 25 ppm, and 35 ppm. The results showed that the IC50 value of the fruit extract was 28.242 ppm, while the IC50 value of vitamin C was 19.302 ppm. These IC50 values show that vitamin C was a stronger antioxidant activity than the fruit extract, but the fruit extract was still as a very strong natural antioxidant category.

scholarly journals Determination of Total Flavonoid Contents and Antioxidant Activity of Leucaena Leucocephala Leaves's Extract

2020 ◽  
Vol 9 (2) ◽  
pp. 70-77
Author(s):  
Taupik Hidayat ◽  
Baharuddin Hamzah ◽  
Minarni R. Jura
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Leucaena Leucocephala ◽  
Positive Control ◽  
Total Flavonoid ◽  
Antioxidant Vitamin ◽  
Antioxidant Power ◽  
Sample Extract ◽  
Ic50 Values

The study of the determination of total flavonoid contents and antioxidant activity of extract of Leucaena leucocephala leaves had been carried out using UV-Vis spectrophotometry method. This study aimed to determine the total flavonoid contents and the antioxidant power of Leucaena leucocephala extract. Extraction of chemical content from Leucaena leucocephala was carried out by the maceration method using absolute ethanol. The total flavonoid contents from the sample extract were taken up for absorption at wavelength 510 nm and 700 nm. The variation of the concentration of Leucaena leucocephala leaves' extract was respectively 20, 40, 60, and 80 ppm. The results of the study showed that the total flavonoid contents of extracts of Leucaena leucocephala leaves was 2.242 g/100 grams. The antioxidant activity of Leucaena leucocephala leaves extract was carried out using DPPH (1,1-diphenyl-2-picrylhydrazine) and the measurement of absorption was at a wavelength of 517 nm, and by varying the sample concentration. Positive control used was vitamin C solution with the same variation of extract's concentration. The results showed that the IC50 values of Leucaena leucocephala leaves extract and vitamin C were 175.388 and 28.907 ppm. Based on the IC50 data it can be stated that the antioxidant vitamin C was stronger than the Leucaena leucocephala leaves extract which was classified as a weak type of natural antioxidant.

scholarly journals Uji Aktivitas Antioksidan Ekstrak Etanol Biji Buah Merah (Pandanus Conoideus De Vriese) Asal Kabupaten Poso Sulawesi Tengah

2018 ◽  
Vol 6 (3) ◽  
pp. 170
Author(s):  
Siti Sulaeha ◽  
Minarni R. Jura ◽  
Nurdin Rahman
Keyword(s):  
Vitamin C ◽  
Scientific Information ◽  
Natural Antioxidants ◽  
Positive Control ◽  
Negative Control ◽  
Seed Extract ◽  
Antioxidant Power ◽  
Ic50 Value ◽  
Ic50 Values

Red fruit seeds have not been studied and known benefits, therefore it needed scientific information about the content and benefits of red fruit seeds. This study aims to analyze the antioxidant power red fruit seed extract as well determining the IC50 value of red fruit seed extract which has the ability of natural antioxidants. Determination of free radical DPPH (1,1-diphenyl-2-picrylhidrazyl) after the addition of red fruit seeds extract is determined using UV-Vis spectrophotometer. Variations in the concentration of the red fruit seed extract used is 20 ppm, 40 ppm, 60 ppm, 80 ppm and 100 ppm.The positive control used is vitamin C with the same concentration. While the negative control using DPPH solution dissolved in absolute ethanol. The results showed IC50 values obtained for the red fruit seed extract and vitamin C are 223.8 ppm and 1.73 ppm. Based on the IC50 data can be known that vitamin C antioxidants more powerful than red fruit seed extract which belongs to natural antioxidants are very weak.

scholarly journals Phytochemistry of Ziziphus Mauritiana; its Nutritional and Pharmaceutical Potential

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Shabbir Hussain ◽  
Shumaila Zulfiqar Butt ◽  
Khurram Shahzad Munawar
Keyword(s):  
Amino Acids ◽  
Phenolic Compounds ◽  
Vitamin C ◽  
Calorific Value ◽  
Ziziphus Mauritiana ◽  
Root Bark ◽  
Acidic Ph ◽  
Medicinal Value ◽  
Small Pox ◽  
Anti Inflammatory

Current studies were performed to overview the phytochemistry, nutritional and medicinal value of Ziziphus mauritiana (commonly known as Ber in Pakistan). The leaves of Z. mauritiana are comprised of proteins, amino acids, alkaloids, terpenoids, fibers, flavonoids, tannins, glycosides, and phenolic compounds. The leave majorly demonstrate the presence of α-linolenic acid, plamitic acid and methyl stearate in n-hexane, chloroform and methanol extracts. The seed contains the highest content of carbohydrate (63.24%) and calorific value (411.61 kJ) while its fruit shows the highest quantity of moisture. Its fruit is slightly acidic (pH around 4.77) and rich in nutrients including proteins, carbohydrates vitamin C and minerals (Fe, Zn, Cu, Na, K, Ca, P). The fruit provides energy of 1516-1575 kJ per its 100 g. Z. mauritiana displays antibacterial, antioxidant and anti-inflammatory activities. Its leaves are used for treating tuberculosis, small pox, burning sensations, dysentary asthma, fever, liver issues, infections and blood relating diseases. Root bark of this plant shows good effectiveness as analgesic, anti-inflammatory and anti-allergic agent. The plant displays strong antioxidant potential and excellent H2O2 scavenging activities.

scholarly journals Antioxidant and anti-inflammatory effect of conjugated linolenic acid isomers against streptozotocin-induced diabetes

2011 ◽  
Vol 108 (6) ◽  
pp. 974-983 ◽  
Author(s):  
Siddhartha S. Saha ◽  
Mahua Ghosh
Keyword(s):  
Oxidative Stress ◽  
Linolenic Acid ◽  
Eleostearic Acid ◽  
Albino Rats ◽  
Punicic Acid ◽  
Conjugated Linolenic Acid ◽  
Frap Assay ◽  
Erythrocyte Morphology ◽  
Antioxidant Power ◽  
Anti Inflammatory

The present study was undertaken to evaluate the effect of α-eleostearic acid and punicic acid, two isomers of conjugated linolenic acid (CLnA) present in bitter gourd (Momordica charantia) and snake gourd oil (Trichosanthes anguina), respectively, against oxidative stress, inflammatory challenge and aberration in erythrocyte morphology due to streptozotocin (STZ)-induced diabetes. Male albino rats were divided into four groups consisting of eight animals in each group. The first group served as control and diabetes was induced in rats in groups 2–4 by a single intraperitoneal injection of STZ. Moreover, rats in groups 3 and 4 were treated with 0·5 % of α-eleostearic acid and 0·5 % of punicic acid of the total lipid given, respectively, by oral administration once per d. After administration, CLnA isomers had significantly reduced oxidative stress, lipid peroxidation and restored antioxidant and pro-inflammatory enzymes such as superoxide dismutase, catalase, and glutathione peroxidase, reduced glutathione, NO synthase level in pancreas, blood and erythrocyte lysate. The ferric reducing antioxidant power (FRAP) assay of plasma showed that CLnA treatment caused improvement in the FRAP value which was altered after STZ treatment due to an increased level of free radicals. Expression of inflammatory cytokines such as TNF-α and IL-6 in blood and expression of hepatic NF-κB (p65) increased significantly after STZ treatment due to increased inflammation which was restored with the administration of CLnA isomers. From the obtained results, it could be concluded that α-eleostearic acid and punicic acid showed potent antioxidant and anti-inflammatory activity with varying effectivity.

scholarly journals Anti-inflammatory properties of Amomum maximum Roxb and Amomum muricarpum Elmer in the North of Vietnam

2021 ◽  
Vol 19 (2) ◽  
pp. 301-307
Author(s):  
Pham Anh Thu ◽  
Nguyen Hoang Son ◽  
Le Thanh Huong ◽  
Nguyen Hai Dang
Keyword(s):  
Nitric Oxide ◽  
Defense Mechanism ◽  
Cell Model ◽  
Underlying Mechanism ◽  
Gastrointestinal Diseases ◽  
The North ◽  
Ic50 Values ◽  
Cox 2 ◽  
Anti Inflammatory ◽  
Low Cytotoxicity

Inflammation is the body's homeostatic defense mechanism in which the immune system reacts to remove foreign bodies. Chronic inflammation can increase the risk for additional damage like autoimmune diseases, arthritis, diabetes and can result in death. Amomum maximum Roxb and Amomum muricarpum Elmer distributed widely in Vietnam have been used in traditional medicine for treatment of some gastrointestinal diseases. This study aimed to investigate the anti-inflammatory effects of the methanol extracts of A. maximum (AMM) and A. muricarpum Elmer (AMC) in murine macrophage RAW 264.7 cell line. The total extracts showed that the extracts exhibited low cytotoxicity and potent anti-inflammatory activities by suppressing excessive nitric oxide (NO). The IC50 values of AMC and AMM were found to be 12.67 ± 1.7 µg/mL and 42.7 ± 2.5 µg/mL, respectively. To elucidate the underlying mechanism, the expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) were evaluated using Western blot analysis. Our data demonstrated that AMC reduced the inflammatory response in a lipopolysaccharide (LPS)-induced RAW264.7 cell model via inhibition of iNOS and COX-2 while AMM seemed to modulate the inflammatory effect through the iNOS pathway only. In conclusion, AMM and AMC root extracts might be potential candidates for a study of naturally alternative anti-inflammatory drugs.

scholarly journals Comparative account of vitamin C contents, antioxidant properties and iron contents of minor fruits in Sri Lanka

2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Hashini Imalsha Abeysuriya ◽  
Vajira P Bulugahapitiya ◽  
Loku Pullukkutige Jayatissa
Keyword(s):  
Sri Lanka ◽  
Vitamin C ◽  
Mangifera Indica ◽  
Antioxidant Properties ◽  
Dehydroascorbic Acid ◽  
Psidium Guajava ◽  
Sri Lankan ◽  
Antioxidant Power ◽  
Melastoma Malabathricum ◽  
Ic50 Values

Sri Lanka is a habitat of diverse fruit varieties; nevertheless 95% of them are underutilized by people due to unawareness of their nutritional values and health aspects, and hence become ‘minor fruits’. This study was aimed on revealing vitamin C, iron and antioxidant contents of 29 varieties of minor fruits (MFs) with the comparison of the same with three best commonly consumable fruits (CFs), namely Carica papaya, Mangifera indica and Psidium guajava. Ascorbic acid (Asc), dehydroascorbic acid (DAsc), vitamin C (TC), phenolic (TP), flavonoid (TF), iron (Fe) contents and antioxidant capacities (AOCs) of fruits were determined using standard methods. The results of mean Asc, DAsc, TC, TP, TF and Fe contents in 100 gm of MFs ranged from 3.1 to 121.5 mg, 1.2 to 70.7 mg, 6.6 to 136.1 mg, 24.9 to 1613.3 mg Gallic acid equivalent, 6.2 to 228.0 mg Quercetin equivalents and 0.2 to 4.9 mg respectively. DPPH and Ferric Reducing Antioxidant Power (FRAP) assays were used for AOCs and variation of IC50 values in a DPPH assay was 1.2 to 245.4 mg/ml whereas FRAP values ranged from 9.6 to 486.7 ?mol FeSO4/gm. Among the studied minor fruits, Melastoma malabathricum (Maha bovitiya/ Malabar melastome) is found as the best respect to all considered parameters. As a conclusion, it can be stated that, the Sri Lankan minor fruits are good alternatives to the common fruits as they are recognized as good source of vitamin C, iron and higher content of antioxidants. As an outcome, Sri Lankan minor fruits can be promoted as alternatives to common fruits and as source of revenue for national economy.

scholarly journals Glycemic Response and Bioactive Properties of Gluten-Free Bread with Yoghurt or Curd-Cheese Addition

Foods ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1410
Author(s):  
Carla Graça ◽  
Joana Mota ◽  
Ana Lima ◽  
Ricardo Boavida Ferreira ◽  
Anabela Raymundo ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Glycemic Index ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenolic ◽  
Glycemic Response ◽  
Gluten Free ◽  
Antioxidant Power ◽  
Bioactive Properties ◽  
Anti Inflammatory

The influence of flour replacement by yogurt or curd-cheese additions (from 10% to 20%, w/w) on the glycemic response and bioactivity improvements of gluten-free bread was evaluated. Starch digestibility, measured by an in vitro digestion model, was applied to determine the effect on starch fractions. The bread glycemic index was calculated. Bread antioxidant capacity (2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) and ferric-ion-reducing antioxidant power (FRAP) methods) and total phenolic compounds were assessed. Anti-inflammatory properties according to enzymatic matrix metalloproteinase (MMP)-9 inhibitory activity were also studied. Considering the higher level of both dairy products tested (20%, w/w) and comparing with control bread results, a reduction of around 35% in the glycemic response of curd cheese bread was achieved, resulting in intermediate index level (glycemic index (GI) 55–69), with yogurt bread still showing a high glycemic index (GI > 70). In terms of bread bioactivity, curd cheese bread expressed better reducing power effects, whereas yogurt bread showed more effective radical-scavenging capacity. An increase in bread phenolic compounds by yogurt (55.3%) and curd cheese (73.0%) additions (at 20%) were also registered. MMP-9 inhibition activity was higher in the dairy bread than in control bread, suggesting an improvement in terms of anti-inflammatory properties. The supplementation of the gluten-free bread by yogurt or curd cheese was shown to be a promising strategy to reduce the glycemic response and to improve the bioactive properties of the bread, that which can contribute to preventive diets of celiac patients and irritable bowel syndrome individuals.

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