Phenol Compounds in the Water of the Dnieper Reservoirs

ABSTRACTNanamuha (Bridelia monoica Merr.) is a plant that was used as a cancer and tumor drug by the Sangihe Islands community. This plant contains phenol compounds, flavonoids, alkaloids and tannins. The purpose of this study was to determine the potential of nanamuha leaves that grow in the Sangihe Island to have antioxidant activity and determine the total phenolic ethanol extracts of nanamuha leaf. The extraction method used is maceration with ethanol solvent p.a. The extracts obtained was determined total phenolic and antioxidant activity test using DPPH method. Based on the results obtained, the ethanol extracts of nanamuha leaves has antioxidant activity with an IC50 value of 75,03 µg / mL and the result showed that the total phenol content the ethanol extracts of nanamuha leaves of 53,34 mg / L. Keywords : Nanamuha leaf, total phenol, antioxidant activity, DPPH ABSTRAKNanamuha (Bridelia monoica Merr.) merupakan tanaman yang dimanfaatkan sebagai obat kanker dan tumor oleh masyarakat Kepulauan Sangihe. Tanaman ini memiliki kandungan senyawa fenol, flavonoid, alkaloid dan tanin. Tujuan dari penelitian ini adalah unutuk mengetahui potensi dari daun nanamuha yang tumbuh di Kepulaun Sangihe ini memiliki aktivitas antioksidan dan menentukan total fenolik dari ekstrak etanol daun nanamuha. Metode ekstraksi yang digunakan adalah maserasi dengan pelarut etanol p.a. Ekstrak yang diperoleh ditentukan total fenolik dan uji aktivitas antioksidan dengan metode DPPH. Berdasarkan hasil yang didapatkan ekstrak etanol daun nanamuha memiliki aktivitas antioksidan dengan nilai IC50 75,03 µg/mL dan hasil penelitian menunjukan total kandungan fenolik ekstrak etanol daun nanamuha sebesar 53,34 mg/L. Kata kunci : Daun Nanamuha, Total fenol, Aktivitas antioksidan, DPPH

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Etude de quelques facteurs influençant la couleur des vins rouges helléniques

OENO One ◽

10.20870/oeno-one.1982.16.1.1337 ◽

1982 ◽

Vol 16 (1) ◽

pp. 1

Author(s):

Antigone Harvalia ◽

Irène Bena-Tzourou

Keyword(s):

Total Phenol ◽

Red Wines ◽

Phenol Compounds ◽

Composés Phénoliques ◽

Formation And Evolution

Les auteurs donnent les teneurs en anthocyanes et en composés phénoliques totaux des raisins de nombreux cépages cultivés en Grèce. Le rôle du cépage, de la maturité de la vendange et de certains facteurs pédoclimatiques sur la formation et l'évolution de ces constituants sont discutés. Les auteurs montrent l'importance de la concentration en anthocyanes, de l'indice d'ionisation, du pourcentage de polymérisation, de ces molécules pour l'interprétation de la couleur des vins rouges jeunes.+++The anthocyanins and total phenol compounds content in grapes of numerous varietals cultivated in Greece are given. The influence of the grape varietal, the harvest ripeness and certain pedoclimatic factors on the formation and evolution of these constituents are discussed. The authors show the importance of anthocyanins concentration, the ionization index, the percentage of polymerized molecules for the evaluation of the color of young red wines.

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Synthesis Of 4-Alil-6- (Hydroxymethyl) -2-Methody Phenol Compounds from Eugenol Through Mannich Reaction Followed Methylation with Methyl Iodide and Subtitution Using NaOH

Journal of Chemical Natural Resources ◽

10.32734/jcnar.v1i1.838 ◽

2019 ◽

Vol 1 (1) ◽

pp. 75-85

Author(s):

Sabarmin Perangin-angin

Keyword(s):

Nucleophilic Substitution ◽

Methyl Iodide ◽

Mannich Reaction ◽

Substitution Reaction ◽

Relative Molecular Mass ◽

Hydroxymethyl Group ◽

Phenol Compounds ◽

Ms Analysis ◽

Stretching Vibration ◽

Solid Form

Eugenol derivative compound 4-allyl-6-hydroxymethyl-2-methoxy phenol was synthesized through Mannich reaction, methylation, dan nucleophilic substitution. Mannich reaction was carried out by reacting eugenol, formaldehyde 37%, and dimethylamine 40 % in reflux condition with n-heptane solvent at temperature 98o-100oC for 10 hours produced 4-allyl-6-(dimethylamino)methyl-2-methoxy phenol with yield of 83 %. The formation of dimethylaminomethyl group supported by C-N stretching vibration at 1246,16 cm-1 and ion molecule peak at 221 in GC-MS analysis. Methylation of 4-allyl-6-(dimethylamino)methyl-2-methoxy phenol was carried out with methyl iodide in ethanol solvent produced 6-((N-iodo-N-methyl-N-methyl-N-methylamino) methyl)-4-allyl-2-methoxy phenol in solid form, which then purified by recrystallization with 78,15 % yield. 4-allyl-6-(hydroxymethyl)-2-methoxy phenol was synthesized by nucleophilic substitution reaction of 6-((N-iodo-N-methyl-N-methyl-N-methylamino)methyl)-4-allyl-2-methoxy phenol with sodium hydroxide in reflux condition then purified by coloum chromatography gave liquid compound with yield of 65,05%. The formation of hydroxymethyl group supported by OH vibration at 3433,9 cm-1 and ion molecule peak at 194 in GC-MS analysis show the relative molecular mass of synthesized product.

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DIC TEXTURING-ASSISTED ACCELERATED SOLVENT EXTRACTION OF ACTIVE MOLECULES OF POMEGRANATE PEEL

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v12i9.4084 ◽

2016 ◽

Vol 12 (9) ◽

pp. 4023-4044

Author(s):

Karim Allaf ◽

Khaoula Elaydi ◽

Ibtisam Kamal ◽

Ahmed Bedoui

Keyword(s):

Solvent Extraction ◽

Radical Scavenging ◽

Effective Diffusivity ◽

Bioactive Compound ◽

Average Diameter ◽

Processing Parameters ◽

Accelerated Solvent Extraction ◽

Raw Material ◽

Phenol Compounds ◽

Instant Controlled Pressure Drop

The current work discusses the use of Instant Controlled Pressure Drop (DIC) as a pretreatment texturing stage intensifying phenolic compound extraction from South Tunisian Punicagranatum L. peels in both cases of conventional and Accelerated Solvent Extraction (ASE). Response Surface Methodology (RSM) allowed identifying the effects of DIC processing parameters on the yields of Total Phenol Compounds (TPC), Total Flavonoid (TF), Condensed Tannins (CT), and Hydrolysable Tannins (HT), and antioxidant capacities via 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging capacity and ß-carotene-linoleic acid as responses. Comparative methods were used to evaluate DIC-textured and Raw samples. The results obtained confirmed that appropriate DIC-texturing improved both kinetic and yield of bioactive compound extraction using ASE from Punicagranatum L. peels. Extraction kinetics was studied through Coupled Washing-Diffusion CWD model. The effective diffusivity was identified and quantified ranged from 0.27 to 8.22 against 0.4710-10 m2s-1 for DIC textured and raw material (RM), respectively. DIC swelling enabled solid vegetal material matrix to expand and be more adapted to mass transfer thus increasing extractability of the phenol compounds. Scanning Electron Microscope SEM showed that DIC generated pores with an average diameter of 50 µm.

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ANALISIS KANDUNGAN FLAVONOID PADA TEH BENALU (Dendropohtoe pentandra (L.) Miq.)

Biopendix: Jurnal Biologi, Pendidikan dan Terapan ◽

10.30598/biopendixvol3issue2page154-158 ◽

2017 ◽

Vol 3 (2) ◽

pp. 154-158

Author(s):

Jecklyn A Lekal ◽

Theopilus Watuguly

Keyword(s):

Organic Matter ◽

Vascular Plants ◽

Total Flavonoid ◽

Total Flavonoid Content ◽

Flavonoid Content ◽

Phenol Compounds ◽

Cell Structures ◽

Assimilation Process ◽

Temperature Factors ◽

Anti Inflammation

Background: Benalu is one of the plant species that lives attached to other plants. The parasite is hemiparasit or half parasitic because it has a green leaf substance (chlorophyll) used for the assimilation process and only sucks water and organic matter from its host plant. Flavonoids are phenol compounds commonly found in vascular plants including parasites. Flavonoids are useful for protecting cell structures, increasing the effectiveness of vitamin C, anti-inflammation, preventing bone loss and as an antibiotic. Method: Total flavonoid content in clove parasite tea using UV-Vis Spectrophotometer method. Results: Total flavonoid in tea clove parasite was 0.2819%. Flavonoids found in tea parasite cloves are low with the presence of heating and temperature factors. Conclusion: Based on the quantitative test, leaf parasite is the highest flavonoid level of 13.702% and after being made tea, flavonoid levels changed to 0.281%.

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High Performance of Phenol Adsorption using Iron Based SBA-15 Synthesized by Loading-Microwave Method

Oriental Journal Of Chemistry ◽

10.13005/ojc/350314 ◽

2019 ◽

Vol 35 (3) ◽

pp. 1022-1028

Author(s):

Yuvita Eka Pertiwi ◽

Maria Ulfa

Keyword(s):

Mesoporous Silica ◽

Molecular Sieves ◽

High Performance ◽

Textural Properties ◽

Hexagonal Structure ◽

Kinetics Model ◽

Element Analysis ◽

Phenol Compounds ◽

X Ray ◽

Iron Based

The iron based mesoporous silica (Fe2O3/SBA-15) was studied for the first time for adsorption of phenol as a model adsorbate compound. The structural and textural properties of the synthesized samples were characterized by means of X-Ray Diffraction, Transmission Electron Microscopy, FTIR and element analysis techniques by Energy Dispersive X-Ray (EDX). The result of XRD analysis showed that mesoporous SBA-15 silica molecular sieves which modified with Fe2O3has a hexagonal structure with a pore size is 4.90 nm and iron contents (25.27%) were found on the surface of the Fe2O3/mesoporous silica SBA-15. While the FTIR analysis showed that Fe2O3/SBA-15 had functional group of assymetric Si-O-Si and Fe-O-Si which was found at 1085 cm-1 and 678 cm-1, respectively. Adsorption performance of Fe2O3/SBA-15 material investigated by phenol compounds as adsorbate model. The optimum contact time is 60 minutes and the Kinetics model of the mesoporous SBA-15 silica molecular sieves modified Fe2O3 can adsorb phenol compounds following the Kinetics Model Ho and McKay. The result optimum adsorption capacity occuring in the adsorption of phenol compounds by of the mesoporous SBA-15 silica molecular sieves modified Fe2O3 is 114.000 mg/g.

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