scholarly journals ANALYSIS OF TOTAL FLAVONOID LEVELS OF ETHANOL EXTRACT (Cinnamon (Cinnamomum burmanii Blume) LEAVES WITH UV-VIS SPECTROPHOTOMETRY METHOD

2021 ◽  
Vol 9 (3) ◽  
pp. 115-120
Author(s):  
Darmayuda I P P ◽  
Suardana I G ◽  
Bawa Putra A. A
Keyword(s):  
Diabetes Mellitus ◽  
Qualitative Analysis ◽  
Ethanol Extract ◽  
Total Flavonoid ◽  
Total Flavonoids ◽  
Average Content ◽  
Yellowish Green ◽  
Total Flavonoids Content ◽  
Medicinal Properties

Cinnamon plants (Cinnamomum burmani Blume), including plants that have medicinal properties for diabetes mellitus because they contain flavonoid compounds. This study aimed to determine the total flavonoids content of the ethanol extract of cinnamon leaf ethanol extract using UV-Vis spectrophotometry method. The ethanol extract of Cinnamon leaf was obtained by maceration using ethanol as a solvent.The qualitative analysis used FeCl3by forming yellowish green complex. The determination of total flavonoids content is conducted basedon AlCl3method with total flavonoidse xpressed in QE (Quercetin equivalent) at the maximum wavelength of 435 nm. The result showed that the average content of flavonoid total is 19.544 mg QE/g extract.

scholarly journals DETERMINATION of TOTAL FLAVONOID LEVELS on LEAF STALKS ETHANOL EXTRACT of TARO (Colocasia esculenta[L.]Schott)

2018 ◽  
Vol 1 (1) ◽  
pp. 58-66
Author(s):  
Novena Yety Lindawati
Keyword(s):  
Quantitative Analysis ◽  
Operating Time ◽  
Ethanol Extract ◽  
Total Flavonoids ◽  
Qualitative And Quantitative Analysis ◽  
Alternative Medicines ◽  
Total Flavonoids Content ◽  
Qualitative Test ◽  
Standard Solution

Taro is plant that has a pseudostalk,cylindrical and light brown bulbs. The shape of leaf is the heart in length. Leaf stalk of taro contains are saponins, flavonoids, tanins, alkaloids, steroids and terpenoids. Leaf stalk of taro can be used as an alternative medicines wound and antioxidants. Flavonoids have an important role in the biological activity of taro leaf stalk. This research aims to determine the flavonoid and total flavonoids content in the taro leaf stalk extract. The extraction is done using maceration method with 70% ethanolas solvent. The extract which is got is used for qualitative and quantitative analysis. Quercetin used as a standard solution. Quantitative analysis using UV-Vis Spectrophotometry on a wavelength of 435.5 nm and operating time at the 29th minute. The results of qualitative test showed that the extract was positive flavonoids. The average concentrations of total flavonoids was 10,2223mg QE/gram extract with %CV value of 0,3051%.

Validasi dari Spektrofotometri UV-Vis dan Kandungan Total Flavonoid Ekstrak Etanol dari Akar Alang-Alang (Imperata cylindrica) dan Daun Pegagan (Centella asiatica) Anita Puspa Widiyana

2021 ◽  
Vol 3 (2) ◽  
pp. 126-136
Author(s):  
Anita Puspa Widiyana ◽  
Keyword(s):  
Chemical Constituents ◽  
Centella Asiatica ◽  
Ethanol Extract ◽  
Chemical Compounds ◽  
Imperata Cylindrica ◽  
Total Flavonoid ◽  
Analysis Method ◽  
Flavonoid Content ◽  
Validation Testing

Validation as a quality control for the content of chemical compounds from natural ingredients. One of the chemical constituents is the flavonoids which are found in the Imperatacylindrica roots and Centella asiatica leaves. This study aims to ensure the analysis method meets the requirements and determines the levels of flavonoids. The research stages included extraction, validation and determination of total flavonoid. Extraction was carried out by immersing dry simplicia in 96% ethanol solvent for 3x24 hours. The solvent is evaporated using a rotary evaporator until a thick extract is formed. Validation testing includes linearity, accuracy, precision, LOD and LOQ. Determinationof the total flavonoid was carried out by measuring the absorption at a maximum wavelength of 428.2 nm. The validation results includethe correlation coefficient (R) of 0.998, precision % RSD <2 %, %accuracy 99,53-97,98%, LOD 3.02ppm and LOQ 9.15 ppm. The total flavonoid of the ethanol extract of Imperata cylindrica roots was 36.39 ± 0.08 mg/g QE and Centella asiatica leaves was 102.10 ± 0.08 mg/g QE. The conclusion is that the method used met the validation requirements and the total flavonoid content of the ethanol extract of Centella asiatica leaves was higher than Imperata cylindrica roots

scholarly journals Determination of Total Phenolic, Total Flavonoid and Antioxidant Activity of Karamunting Leaves (Rhodomyrtus tomentosa (Aiton) Hassk) Extract and Fraction

2021 ◽  
Vol 9 (2) ◽  
pp. 72-78
Author(s):  
Rahma Dona
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Ethanol Extract ◽  
Ethyl Acetate Fraction ◽  
Total Flavonoid ◽  
Hexane Fraction ◽  
Total Phenolic ◽  
Water Fraction ◽  
Ic50 Value

Karamunting (Rhodomyrtus tomentosa (Aiton) Hassk) is a family of Myrtaceae which has been used by the community as traditional medicine. The purpose of this research is determine total phenolic and total flavonoid level and test antioxidant activity of Karamunting Leaves. Determination of total phenolic using gallic acid standard by the Folin Ciocalteu method. The results obtained total phenolic in water fraction of 99 mgGAE/g, ethanol extract 94,1 mgGAE/g, ethyl acetate fraction 83,3 mgGAE/g and n-hexane fraction 41,4 mgGAE/g. Determination of total flavonoid using standard quersetin with AlCL3 complex formation method, the results obtained total flavonoid in water fraction of 156,8 mgQE/g, ethanol extract 192,6 mgQE/g, ethyl acetate fraction 89,4 mgQE/g and n-hexane fraction 31,3 mgQE/g. Determination of antioxidant activity was determined by DPPH radical capture test (1,1-diphenyl-2-picrylhydrazyl), the results obtained in water fraction with IC50 value 15,02 µg/mL, ethanol extract 14,06 µg/mL, ethyl acetate fraction 14,48 µg/mL with very strong activity of antioxidant, whereas in the n-hexane fraction was categorized as weak antioxidant activity with an IC50 value of 264,02 µg/mL.

scholarly journals Spectrophotometric Determination of Total Flavonoid Content in Biancaea Sappan (Caesalpinia sappan L.) Leaves

2021 ◽  
Vol 8 (3) ◽  
pp. 1-4
Author(s):  
Nurlinda Nurlinda ◽  
Virsa Handayani ◽  
Faradiba Abdul Rasyid
Keyword(s):  
Antioxidant Activity ◽  
Leaf Extract ◽  
Methanol Extract ◽  
Total Flavonoid ◽  
Total Flavonoids ◽  
Total Flavonoid Content ◽  
Flavonoid Content ◽  
Caesalpinia Sappan ◽  
Antimicrobial Treatments

AbstractBiancaea sappan  (BS) is traditionally used to treat anticonvulsants, anti-inflammatory, antiproliferative, anticoagulant, antiviral, immunostimulant, antioxidant, and antimicrobial treatments. Flavonoids are found in Secang; flavonoids are secondary metabolites that have antioxidant activity. This study aims to identify the flavonoids using TLC and determination of flavonoids content in BS leaves. Initially, The methanol extract of BS was obtained by maceration with ethanol. The qualitative analysis of flavonoid was using TLC and visualization by sprayed with AlCl3. The determination of total flavonoid content is conducted based on the AlCl3 method with total flavonoids expressed in QE (Quercetin equivalent) at the maximum wavelength of 431 nm. The research results showed that BS leaves contain flavonoids and the total flavonoid content of BS leaf extract is 1.0318 mg QE / g extract.Keywords: Caesalpinia sappan; Flavonoid content, Spectrophotometric

scholarly journals Total Flavonoid Levels of Ethanol Extract of Lemongrass Leaves and Thatch Grass Leaves Using UV-VIS Spectrophotometry

2018 ◽  
pp. 337-345
Author(s):  
Yudhi Nuryadin ◽  
Tadjuddin Naid ◽  
Andi Amaliah Dahlia ◽  
Seniwati Dali
Keyword(s):  
Quantitative Analysis ◽  
Medicinal Plants ◽  
Qualitative Analysis ◽  
Ethanol Extract ◽  
Total Flavonoid ◽  
Natural Antioxidant ◽  
Total Flavonoid Content ◽  
Flavonoid Content

Lemongrass Leaves (Cymbopogoncitratus DC.) and Thatch Grass Leaves (Imperata cylindrical (L.)Raeusch) are medicinal plants belong to similary family. Their activity as natural antioxidant sources because it’s contains the flavonoids compound. This study aimed to determine the total flavonoid content on the ethanol extract of lemongrass leaves and the thatch grass leaves using UV-Vis spectrophotometry. The extraction wasdone by maceration methodusing ethanol. The first sample is 3,95% lemongrass leaves, and the second one is 2,98% thatch grass leaves. The qualitative analysis by TLC method with the eluent ratio n-Hexane:ethyl acetate (6:4) showed that both samples positively contain flavonoids. The quantitative analysis by spectrophotometry at the maximum wavelength 431 nm showed that total flavonoid content in the first sample is 2,8666 % and the second sample is 3,4866 %.

scholarly journals Induction of flavonoid biosynthesis by in vitro cultivation of Astragalus glycyphyllos L.

Pharmacia ◽  
2020 ◽  
Vol 67 (2) ◽  
pp. 95-99
Author(s):  
Pavlinka Popova ◽  
Yancho Zarev ◽  
Aleksandar Shkondrov ◽  
Ilina Krasteva ◽  
Iliana Ionkova
Keyword(s):  
Plant Hormones ◽  
Suspension Cultures ◽  
Flavonoid Biosynthesis ◽  
Total Flavonoid ◽  
In Vitro Cultivation ◽  
Total Flavonoids ◽  
Total Flavonoid Content ◽  
Flavonoid Content

Establishment of in vitro cultures from Astragalus glycyphyllos, determination of biomass and analysis of total flavonoids, rutin and camelliaside A were performed. To increase flavonoid production various combinations of plant hormones and light/dark regimen were investigated. Suspension cultures with exogenous quercetin were evaluated for possible increase in flavonoid production. Shoots, calli and suspensions were successfully established. Rutin and camelliaside A were proved in highest amount in shoots. Calli, cultivated on modified G48 medium, with double amount of Ca2+ and Mg2+, achieved higher total flavonoid content (2.37 and 2.03 mg/g DW). Suspensions cultures, cultivated on modified G48 medium with 10, 20 and 30 mg/mL quercetin achieved higher total flavonoid content (0.09, 0.10 and 0.13 mg/mg DW). Biotransformation of quercetin to isoquercitrin was achieved. The highest concentration of isoquercitrin (56.73 ng/mg DW) was observed on suspensions cultures cultivated on modified G48 medium, with 20 mg/mL quercetin.

scholarly journals The Purification effect on Organoleptic Profile, Yield, Total Phenol and Total Flavonoids from 96% Ethanol Extract of Moringa (Moringa oleifera. L) leaves.

2020 ◽  
Vol 17 (2) ◽  
pp. 188-198
Author(s):  
Bayu Herdi Al Huda ◽  
Hari Susanti ◽  
Nining Sugihartini
Keyword(s):  
Moringa Oleifera ◽  
Ethanol Extract ◽  
Total Phenol ◽  
Total Flavonoid ◽  
Total Flavonoids ◽  
One Way Anova

Purifikasi ekstrak etanol 96% daun kelor dilakukan untuk meningkatkan kandungan zat aktif serta untuk memperoleh warna yang lebih menarik. Tujuan penelitian ini adalah mengetahui jenis pelarut dalam proses fraksinasi yang memberikan kandungan zat aktif lebih tinggi dibandingkan ekstrak. Penelitian ini diawali dengan maserasi daun kelor kering dengan etanol 96%. Filtrat yang telah di keringkan di atas waterbath kemudian di purifikasi. Purifikasi diawali dengan melarutkan ekstrak ke aquades panas dengan perbandingan 1:10, setelah itu ditambahkan etil asetat atau n-heksana sejumlah sama dengan aquades panas dalam corong pisah, dikocok hingga terjadi pemisahan fase. Fase etil asetat atau n-heksana diambil kemudian filtrat yang diperoleh digabungkan. Ekstrak etanol 96% (E1), fraksi etil asetat (E2) dan fraksi n-heksana (E3) kemudian dievaluasi dengan parameter organoleptis, % rendemen, total fenol, dan total flavonoid. Data yang diperoleh dianalisis statistik one way ANOVA dengan taraf kepercayaan 95%. Hasil pengukuran terhadap E1, E2, dan E3 pada setiap parameter secara berturut-turut pada parameter rendemen adalah 15,81%; 22,18%; 20%, total fenol yaitu 28,94±0,54 mg GAE/g; 29,44 ± 0,93 mg GAE/g; 11,41±0,12 mg GAE/g, dan total flavonoid yaitu 3,19±0,13%; 9,92 ±0,06%; 5,81±0,18%. Secara organoleptis dari segi konsistensi, bau, dan rasa ketiganya adalah identik, sedangkan dari segi warna E2 lebih hijau kekuningan dan cerah, sehingga lebih menarik. Secara statistik, ada perbedaan bermakna di antara E1, E2, dan E3 pada total fenol dan flavonoid. Dapat disimpulkan bahwa E2 memiliki total fenol dan flavonoid lebih besar secara signifikan dibanding E1 dan E3.

scholarly journals Influence of steeping time on biological activity of black mulberry leaves tea

2016 ◽  
pp. 177-191 ◽  
Author(s):  
Sladjana Cestic ◽  
Marija Radojkovic ◽  
Aleksandra Cvetanovic ◽  
Pavle Maskovic ◽  
Sasa Djurovic
Keyword(s):  
Total Phenolics ◽  
Reducing Power ◽  
Total Flavonoids ◽  
Mulberry Leaves ◽  
Tea Quality ◽  
Total Flavonoids Content ◽  
Phenolics Content ◽  
Polyphenolic Profile ◽  
Boiled Water

Black mulberry leaves teas (BMLTs) were prepared using boiled water and different steeping time (5 10, 20, 35 and 45 minutes). In order to establish the connection between steeping time and tea quality, total phenolics content (TPC), total flavonoids content TFC contents were measured, as well as two antioxidant assays (DPPH and reducing power assays), alone with antimicrobial and cytotoxic tests. The obtained results showed that TPC, TFC, IC50 and EC50 values increased with the increase in steeping time, while antimicrobial and cytotoxic activity exhibited different tendency. Based on the obtained results, the 10-minute steeping time was the optimum for tea preparation and this tea was used for the determination of polyphenolic profile using HPLC-MS technique. The results showed that the main compounds in BMLT were chlorogenic and caffeic acids with the contents of 7226.00 and 537.52 ?g/g, respectively.

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