scholarly journals Effect of Roasting and Kneading on Antioxidant Activity and Consumer Acceptance towards Asiatic Pennywort Tea

2018 ◽  
Vol 187 ◽  
pp. 01004
Author(s):  
Rungnattakan Ploenkutham ◽  
Preeyapa Sripromma ◽  
Suksan Amornraksa ◽  
Patchanee Yasurin ◽  
Aussama Soontrunnarudrungsri
Keyword(s):  
Radical Scavenging ◽  
World Health ◽  
Total Phenolic ◽  
Herbal Tea ◽  
Ancient People ◽  
Consumer Surveys ◽  
Nutrition Value ◽  
Health Organization ◽  
Dpph Radical Scavenging ◽  
Global Population

Nowadays, population have more age and longer life than ancient people which the World Health Organization (WHO) reported that the proportion of the global population will become 'Aging Society' during healthier lifestyles, new advance technologies especially in medical manufacture. This study was aimed to study attitude, behavior and opinion of elderly people towards herbal tea products and to optimize preparation, procedure and process of Asiatic Pennywort tea. According of the study, there are 100% of Thai people ever consume herbs and herbal tea, they consume as beverage. Half of consumer surveys are no chronic health conditions. Safety of product is the most factors that effect to purchasing decision. The consumers are agree (73%) in nutrition value that presented on label as it's clamed on the package. Result from this study shown that roasted and kneading process is highest mean score from consumer's preference 7.07±1.51 (P<0.05) that this method is significantly different in total phenolic content and Ferric reducing antioxidant potential assay but not in DPPH radical scavenging which is highest mean of second significantly level.

scholarly journals Total Phenolic Contents and Antioxidant Activities of Different Herbal Tea Extracts from Turkey

2019 ◽  
Vol 3 (2) ◽  
pp. 66-72
Author(s):  
Keyword(s):  
Green Tea ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Hot Water ◽  
Total Phenolic ◽  
Dpph Radical ◽  
Herbal Tea ◽  
Phenolic Contents ◽  
Total Phenolic Contents ◽  
Dpph Radical Scavenging

: The aim of the present study is to determine the total phenolic contents (TPC), DPPH radical scavenging activities, and reducing power of commercially consumed herbal teas including sage tea (ST), blackberry tea (BT), apple tea (AT), Echinacea tea (ET), lime tea (LT), rosehip tea (RT), and green tea (GT) in Turkey. For this purpose, various solvents were used for extraction of the tea samples and the results were compared in terms of total phenolic contents and antioxidant activities, as well. Hot water is found as the best solvent for the extraction of total phenolics from ST, BT, AT, and RT, respectively. On the other hand, the highest TPC values are obtained with the extraction of ET, LT, and GT in the presence of aqueous acetone (50%) solvent system. Generally all samples gave high DPPH radical scavenging activities depending on their extraction solvents. The highest radical scavenging activity was found as 94.92 ± 0.01 % for ST in ethanol, while the lowest activity was obtained as 5.98 ± 0.14 % for BT with water extract. Ferric reducing antioxidant assay results are closed each other and the highest activity (0.27 ± 0.74 mM Trolox) was observed in the ethanol extract of ST. Antioxidant activities and TPC of the herbal tea samples varied depending on the extraction solvent. Water or aqueous organic solvent extracts of sage tea and green tea samples gave high TPC values and antioxidant activities.

scholarly journals Phytochemical contents and antioxidant activities of fern, Asplenium ceterach L. in different altitudes

2019 ◽  
Vol 48 (2) ◽  
pp. 315-320
Author(s):  
Asuman Karadeniz Pekgöz ◽  
Ilker Çinbilgel
Keyword(s):  
High Performance ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Ecological Factors ◽  
Total Phenolic ◽  
Plant Chemical ◽  
Dpph Radical Scavenging ◽  
Phytochemical Contents ◽  
Different Altitudes

Phytochemical contents and antioxidant activities of fern (Asplenium ceterach L.) distributed in different altitudes (22 stations) were compared and the relationships between altitude and plant chemical contents were studied. The highest 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was found in 22nd station (IC50 = 47.91 μg/ml) and the highest total phenolic content was found in 9th station (110.62 μgGAE/ml) whereas the maximum total flavonoid content was found in 20th station (232.67 μgCE/ml). High performance liquid chromatography (HPLC) analysis indicates that the maximum pterosin b (0.235 μg/ml), catechin (2.756 μg/ml) and quercetin (0.207 μg/ml) values were found in 21th station whereas the maximum chlorogenic acid (17.718 μg/ml) was obtained in 9th and caffeic acid (6,598 μg/ml) in 13th stations. It was observed that altitude is not potent alone, but it can be a factor in the occurrence of other ecological factors like soil properties, water, humidity, light and temperature.

scholarly journals The comparative risk assessment for alcohol as part of the Global Burden of Disease 2010 Study: What changed from the last study?

2013 ◽  
Vol 2 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Jürgen Rehm ◽  
Guilherme Borges ◽  
Gerhard Gmel ◽  
Kathryn Graham ◽  
Bridget Grant ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Risk Factor ◽  
Burden Of Disease ◽  
World Health ◽  
Global Burden Of Disease ◽  
Global Burden ◽  
Comparative Risk Assessment ◽  
Comparative Risk ◽  
Health Organization ◽  
Global Population

Rehm, J., Borges, G., Gmel, G., Graham, K., Grant, B., Parry, C., Poznyak, V. & Room R. (2013). The comparative risk assessment for alcohol as part of the Global Burden of Disease 2010 study: What changed from the last study? International Journal of Alcohol and Drug Research, 2(1), 1-5.  doi: 10.7895/ijadr.v2i1.132 (http://dx.doi.org/10.7895/ijadr.v2i1.132)In December 2012, the new results of the Comparative Risk Assessment (CRA) for alcohol within the Global Burden of Disease and Injury (GBD) Study 2010 were presented at a joint meeting of the GBD Group and the journal Lancet at the Royal Society in London (Lim et al., 2012). At first glance, there do not appear to be many changes to alcohol consumption as a risk factor for death and disability: it is identified as the third most important risk factor, as it was in the last CRA (World Health Organization, 2009). The burden of disease attributable to alcohol had increased, compared to the 2004 estimate (Rehm, Mathers et al., 2009), but this could be due to an increase in global population, or to variations in the methodologies behind the 2004 and 2010 estimates.

scholarly journals Antioxidant Activities, Total Phenolic Content and Colour Parameters in the Aqueous Extracts of Avocado, Banana and Papaya Leaves

2021 ◽  
Vol 19 (01) ◽  
pp. 137-142
Author(s):  
VIJAYA KUMAR GOPALAN NIRVESHA NAIR ◽  
SEOK TYUG TAN
Keyword(s):  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Colour Parameters ◽  
Banana Leaves ◽  
Dpph Radical Scavenging

Literature has consistently reported that horticultural wastes including leaves, skin, stones and seeds contain substantial amounts of bioactive compounds. Therefore, this study aims to evaluate antioxidant activity, Total Phenolic Content (TPC) and colour parameters in avocado, banana, and papaya leaves. Antioxidant activity of the leaves was determined using Trolox Equivalent Antioxidant Capacity (TEAC) and DPPH radical scavenging assays, whereas TPC was evaluated using Folin-Ciocalteu assay. Data analysis was carried out using SPSS version 25 of triplicate determinations. Mean differences among the fruit leaves extracts were determined using One way-ANOVA, while the correlations between the studied components were by the Pearson's Correlation Coefficient Test. The colour of the extracts was determined using a colour picker software. The TEAC values were in the range of 332.30 ± 18.04 µg Trolox/g D.W. (avocado leaves) to 12217.71 ± 18.04 µg Trolox/g D.W. (banana leaves) while the DPPH radical scavenging activity was from 10.07 ± 3.89% (banana leaves) to 86.70 ± 0.26 % (avocado leaves). Besides, TPC was from 871.33 ± 38.35 µg GAE/g D.W. (papaya leaves) to 1199.08 ± 6.00 µg GAE/g D.W. (avocado leaves). The hue values were from 19º in avocado leaves extract to 37º in banana leaves extract. Results from Pearson's Correlation Coefficient Test revealed that there were no significant correlations between the studied assays. Avocado leaves had the highest DPPH radical scavenging activity and TPC among the three extracts. Findings derived from the present study could be exploited in nutraceuticals formulation.

scholarly journals Effect of Processing on Antioxidant Activity, Total Phenols, and Total Flavonoids of Pigmented Heirloom Beans

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Lisa Garretson ◽  
Catrin Tyl ◽  
Alessandra Marti
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Processing Step ◽  
Cooking Times ◽  
Dpph Radical Scavenging

While extensive research has been performed on the composition and cooking quality of commodity beans, relatively little is known about pigmented heirloom varieties and the effects of processing on their antioxidant capacity. The aim of this study was to evaluate the effect of soaking and cooking on antioxidants in four heirloom bean varieties compared to Pinto. Water absorption kinetics, soaking and cooking time, DPPH radical scavenging activity, and total phenolic and total flavonoid content were determined in raw, soaked, and cooked samples. Heirlooms required less time to hydrate compared to Pinto, whereas cooking times were similar. The effect of soaking on antioxidant capacity and flavonoids was minimal compared to cooking, which led to losses of up to 57%. Each pigmented heirloom bean had specific characteristics, and three of them had equal or higher amounts of antioxidants or antioxidant activity than Pinto at every processing step. Among heirlooms, Koronis Purple and Jacob’s Cattle had the highest antioxidant activity and Jacob’s Cattle and Tiger’s Eye the highest amount of flavonoids, even after cooking.

scholarly journals Total Phenolic Content and Antioxidant Activity of Salvia spp. Exudates

2012 ◽  
Vol 7 (2) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Laura Giamperi ◽  
Anahi Bucchini ◽  
Angela Bisio ◽  
Emanuela Giacomelli ◽  
Giovanni Romussi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Total Phenolic ◽  
Dpph Radical ◽  
Radical Scavenging Capacity ◽  
Scavenging Capacity ◽  
Dpph Radical Scavenging

The total phenolic content and antioxidant activity of 6 Salvia spp. exudates were measured to find new potential sources of natural antioxidants. Total phenolic content was assessed by a modified Prussian blue method, and the antioxidant activity by two methods: 1,1- diphenyl-2-picryl- hydrazyl (DPPH) radical scavenging capacity assay and lipoxygenase inhibitory assay. The total phenolic content ranged between 1.3 μg/mg DW ( S. fallax) and 74.0 μg/mg DW ( S. cacaliaefolia). In the DPPH test, S. cacaliaefolia was more effective than BHT, while in the inhibition of lipid peroxidation all the extracts presented good antioxidant capacity.

Antimicrobial activities of Allium staticiforme and Allium subhirsutum

2020 ◽  
Vol 15 (1) ◽  
pp. 19-23
Author(s):  
Alican Bahadir Semerci ◽  
Dilek İnceçayır ◽  
Vusale Mammadova ◽  
Ayşegül Hoş ◽  
Kenan Tunç
Keyword(s):  
Radical Scavenging ◽  
Activity Level ◽  
Diffusion Method ◽  
Total Phenolic ◽  
Dpph Radical ◽  
Antifungal Activities ◽  
Phenolic Contents ◽  
Total Phenolic Contents ◽  
Methanolic Extracts ◽  
Dpph Radical Scavenging

The antibacterial and antifungal activities of the bulb and flower of Allium staticiforme and Allium subhirsutum were investigated. In addition, DPPH radical scavenging activity and total phenolic contents were determined. The results show that methanolic extracts of A. staticiforme and A. subhirsutum had antifungal activities against Candida albicans, together with a less activity level against Escherichia coli, Staphylococcus epidermidis, S. aureus, Enterecoccus faecalis, Salmonella typhimurium and Pseudomanas aeruginosa. The total phenolic contents of A. staticiforme leaf and bulb were determined as 17 and 2.4 mg of GAE/100 g, respectively. The IC50 of methanolic extracts of A. staticiforme and A. subhirsutum were also determined. In conclusion, both A. staticiforme and A. subhirsutum have antifungal activities with weak antibacterial activities. These plants have DPPH radical scavenging activities. Video Clip of Methodology: Disc Diffusion Method: 3 min 04 sec:  Full Screen   Alternate

scholarly journals Antioxidant poteintial and activity of aerial parts of eight medicinal plants of Uttarakhand, India

2019 ◽  
Vol 48 (2) ◽  
pp. 265-270
Author(s):  
Shakuli Kashyap ◽  
PB Rao ◽  
P Mishra ◽  
Supriya
Keyword(s):  
Radical Scavenging ◽  
Total Phenolic ◽  
Enzymatic Antioxidants ◽  
Antioxidant Power ◽  
Mean Values ◽  
Aerial Parts ◽  
Trolox Equivalent ◽  
Ferric Reducing Antioxidant Power ◽  
Dpph Radical Scavenging ◽  
Gallic Acid Equivalent

The antioxidant potential of aerial parts of eight medicinal plant species were investigated by 1,1- diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, Ferrous ion-chelating (FCA) and ferric reducing antioxidant power assays in five different concentrations and the mean values ranged from 20.39 to 83.01%, 17.21 to 48.62% and 11.70 to 21.65 μg Trolox equivalent/mg extract, respectively. Total phenolic and flavonoid contents ranged from 4.83 to 10.46 μg, gallic acid equivalent/mg extract and 1.12 to 13.11 μg quercitin equivalent/mg extract. Enzymatic antioxidants (Unit/mg fresh weight): superoxide dismutase, catalase and peroxidase values ranged from 14.86 to 49.81, 60.00 to 141.33 and 0.25 to 0.60, respectively. Considering the overall assay M. Pudica can be considered as the potent candidate for displaying antioxidant activity among the experimental plants.

scholarly journals Development of Antioxidant Rich Herbal Tea Bags

2021 ◽  
Vol 9 (8) ◽  
pp. 2519-2520
Author(s):  
Kumari Pallavi
Keyword(s):  
Raw Materials ◽  
Radical Scavenging Activity ◽  
White Blood Cells ◽  
Radical Scavenging ◽  
Black Pepper ◽  
Cost Evaluation ◽  
Total Phenolic ◽  
Total Phenol Content ◽  
Herbal Tea ◽  
Organoleptic Evaluation

Abstract: The present study entitled “Development of antioxidant rich herbal tea bags” was conducted with the objective to develop herbal tea bag using different ingredients, to assess the sensory accessibility and antioxidant content of developed tea bag. Herbal tea is a commonly consumed beverage brewed from the leaves, flowers, seeds, fruits, stems and roots of plants species rather than Camellia sinensis L., which has been widely used for health care and diseases prevention. The main benefit of tea bags is that they add convenience. It’s easy to pop a tea bag into a hot cup of water or to go mug and get on with the rest of the day. Antioxidant rich herbal tea bags were prepared by using four treatments T1 (Giloy 1.5gm, Ginger 0.5gm, Cloves 0.5gm, Cinnamon 0.5gm, Black pepper 0.5gm and Tulsi 0.5gm), T2 (Giloy 2.0gm, Ginger 0.5gm, Cloves 0.5gm, Cinnamon 0.5gm, Black pepper 0.5gm and Tulsi 0.5gm), T3 (Giloy 2.5gm, Ginger 0.5gm, Cloves 0.5gm, Cinnamon 0.5gm, Black pepper 0.5gm and Tulsi 0.5gm) and T4 (Giloy 3.0gm, Ginger 0.5gm, Cloves 0.5gm, Cinnamon 0.5gm, Black pepper 0.5gm and Tulsi 0.5gm). Organoleptic evaluation of the prepared product in relation to sensory attributes was carried out using the nine point hedonic scale score card. Antioxidants properties of developed tea bag were analyesd by DPPH Free Radical Scavenging method (Braca et al., 2001) and Total Phenol Content (TPC) by Folin-ciocalteu phenol method (Singleton and Rossi, 1999). All treatments were replicated three times and the data obtained during investigation were statistically analyzed by using analysis of variance (ANOVA) and critical difference (C.D.) techniques. On the basis of sensory acceptability it was found that T3 was scored highest in terms of colour and appearance, consistency, flavor and taste and overall acceptability. DPPH radical scavenging activity and total phenolic content of prepared antioxidant rich herbal tea bags for best treatment T3 was obtained 0.403 percent and 1.00mg/5g (per tea bag). The cost of the antioxidant rich herbal tea bags per 5g (per tea bag) of dry ingredients at the prevailing cost of the raw materials was highest in T1 (Rs. 6.52) followed by T2 (Rs. 6.27), T3 (Rs. 6.04) and T4 (Rs. 5.79). Giloy is recommended for preparation of different types of products to boost immunity and fight against free radicals and also enhances the efficacy of white blood cells and thus help to fight against infections and bacteria causing dangerous diseases. Keywords: Herbal tea, Antioxidant, Organoleptic evaluation, Cost evaluation

scholarly journals Antioxidant and free radical scavenging effects of Iraqi sumac ( Rhus coriaria L)

2013 ◽  
Vol 10 (3) ◽  
pp. 921-933 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Antioxidant Activity ◽  
Metal Ion ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Total Phenolic ◽  
Total Antioxidant ◽  
Rhus Coriaria ◽  
Dpph Radical Scavenging ◽  
Seed Extracts

This study was carried out to evaluate the antioxidant activity of Iraqi sumac seeds (Rhus coriaria. L) (Anacardiaceae). Total phenolic compounds and flavoniods were determined in three different sumac seed extracts (SSE) (aqueous,ethanolic and methanolic extract). For extraction Antioxidant activity of SSE were evaluated by various antioxidant assays, including total antioxidant capacity, reducing power,by using 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging, nitric oxide scavenging, Hydroxyl radical scavenging, and metal ion chelating activities. These various antioxidant activities were compared with ascorbic acid as a standard antioxidant.The results showed that the three(SSE), contained large amounts of phenolic and flavoniods compounds. The results also showed that the three( SSEs ) have antioxidant activities , the methanolic (SSEs) contain larger amounts of phenolic and flavoniod compounds and have a higher antioxidant activities than that of aqueous or ethanolic (SSE).These results indicated that Iraqi aqueous and alcoholic extracts of Iraqi sumac in especial methanolic) SSE( are good scavengers for reactive oxygen species(ROS) and are a potential source of natural antioxidant, that may be used in pharmaceutical or food industry .

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