Profiling and Quantification of Phenolics inStevia rebaudianaLeaves

2015 ◽  
Vol 63 (41) ◽  
pp. 9188-9198 ◽  
Author(s):  
Hande Karaköse ◽  
Anja Müller ◽  
Nikolai Kuhnert
Keyword(s):  
Quantification Of Phenolics

scholarly journals Biological Activities of Stem, Leaves and Essential Oil of Cedrus deodara from District Poonch, Rawalakot Azad Kashmir, Pakistan

2018 ◽  
Vol 6 (9) ◽  
pp. 1114
Author(s):  
Tahir Zaman ◽  
Mubasher Sabir Syed ◽  
Sadaf Isfaq ◽  
Muhammad Sarfraz Khan
Keyword(s):  
Essential Oil ◽  
Biological Activities ◽  
Chelating Agent ◽  
Thrombolytic Activity ◽  
Cedrus Deodara ◽  
Biofilm Inhibition ◽  
Chelating Ability ◽  
Azad Kashmir ◽  
Quantification Of Phenolics ◽  
Antibacterial Potential

Cedrus deodara (Roxb. ex D. Don) Loudon, is a high value medicinal plant found in flora of Poonch part of Himalayan region. The present study was conducted to determine and compare the antioxidant activity, quantification of phenolics and flavonoids, chelating ability, biofilm inhibition, thrombolytic activity and cytotoxicity of the stem, leaves of crudes extracts and essential oil. It can be claimed that that all parts of C. deodara including its essential oil is a rich source of phytochemicals that exhibited high quantity of phenolics ranged from (49.76±0.22 GAE to 60.36±0.44GAE mg/g) and flavonoids ranged from (4.78±0.61mg/g to 6.62±0.45 mg/g)but also exhibited antioxidant, metal chelating agent ability, antibacterial potential ranged from (35.59±0.50 to 61.61±0.61%)and thrombolytic activities ranged from (22.86±0.7 to 32. 64±0.5 %)with minimal toxicity ranged from (0.40±0.35 to 3.73±0.23%). Further studies are required to determine the bioactive compounds and bioactivity of plant extracts and fractions.

scholarly journals Quantification of phenolics, flavonoids and antioxidant activity of Tamarindus indica from selected areas in Tanzania

2018 ◽  
Vol 16 (1) ◽  
pp. 22-28
Author(s):  
MOURICE MBUNDE ◽  
ROBINSON H. MDEGELA ◽  
H.S. LASWAI ◽  
F.P. MABIKI
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Tamarindus Indica ◽  
Leaf Extracts ◽  
Fruit Extracts ◽  
Significant Difference ◽  
Phenolic And Flavonoid ◽  
Quantification Of Phenolics

Mbunde M, Mdegela RH, Laswai HS, Mabiki FP. 2018. Quantification of phenolics, flavonoids and antioxidant activity of Tamarindus indica from selected areas in Tanzania. Biofarmasi J Nat Prod Biochem15: 22-28. The objective of this study was to establish the quantities and antioxidant activity in fruits and leaves of Tamarindus indica L. collected from three agro-ecological zones of Tanzania represented by Morogoro, Tanga and Dodoma regions. Samples were examined for their total phenolic and flavonoid contents as well as their antioxidant activity. The total phenolic content showed significant difference in all extracts of the fruits and leaves and ranged from 1994.4±530.77 to 17874.67±5234 mg GAE/100 g. Similarly, the total flavonoid content in tamarind leaf and fruit extracts ranged from 880±609.45 to 11483.11±2559.67 mg CE /100 g dry weight. There was a significant difference between the antioxidant activity in the leaf (54.39±0.13%) and fruit extracts (40.11±0.03%). Tamarind leaf extracts exhibited significantly higher radical scavenging activity than fruit extracts. The antioxidant activity in fruit extracts expressed in percentage ranged between 29.27±0.06% and 40.11±0.03% while in leaf extracts the activity ranged from 22.33±0.08% to 54.39±0.13%. The radical scavenging activity from Coastal leaf extracts had the highest activity followed by Eastern leaf extracts and lastly Central leaf extracts. In the fruit samples, the highest activity was shown by Coastal fruit extracts followed by Central fruit extracts and Eastern fruit extract being the least active. The values in Ferric reducing power (FRAP) assay ranged between 6968±3655.91 µM Fe (II)/g and 76822.67±23259.9 µM Fe (II)/g for leaves and fruits dry mass respectively. These values correspond to the antioxidant activity which positively correlated with the total phenolic and flavonoid contents. Geographical location and climatic conditions have been reported to have enormous effects on the amount and activity of antioxidants available in both tamarind leaves and fruits. Findings from the study indicated that tamarind can be utilized as a cheap source of antioxidants. However, more agronomic studies should be considered to confirm the effects of agroecological differences on antioxidant activity.

scholarly journals Optimisation of phenolic extraction and quantification of phenolics in palm kernel cake

2015 ◽  
Vol 3 (1) ◽  
pp. 2 ◽  
Author(s):  
Shwu Fun Kua ◽  
Julia Ibrahim ◽  
Christopher Kuok Weng Ooi ◽  
Khairul Izwan Nan ◽  
Norhafizi Hashim ◽  
...  
Keyword(s):  
Palm Kernel ◽  
Palm Kernel Cake ◽  
Phenolic Extraction ◽  
Quantification Of Phenolics

HPTLC Fingerprinting and Quantification of Phenolics inBrahma Rasayana– An Ayurvedic Rejuvenator

2011 ◽  
Vol 1 (1) ◽  
pp. 123-129
Author(s):  
Kiran G. Ghagargunde ◽  
Jasmeen Sidana ◽  
Inder Pal Singh
Keyword(s):  
Quantification Of Phenolics
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