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2 4 6 tri 2 pyridyl s triazine tptz

Manufactured by Merck Group
Sourced in United States, Germany

2,4,6-tri(2-pyridyl)-s-triazine (TPTZ) is a chemical compound used in various laboratory applications. It is a tridentate ligand that can form complexes with metal ions, particularly iron. TPTZ is commonly used as a reagent in colorimetric assays for the detection and quantification of iron in samples.

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40 protocols using 2 4 6 tri 2 pyridyl s triazine tptz

1

Antimicrobial and Anti-inflammatory Assays

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Brain Heart Infusion (BHI) broth and (BHIA) Mueller–Hinton (MH) broth for antimicrobial susceptibility testing were purchased from BD (Becton, Dickinson and company, Franklin Lakes, NJ, USA). RAW264.7 cell culture media and Dulbecco’s modified Eagle’s medium (DMEM) were purchased from Gibco (Grand Island, NY, USA). The MTT solution for cytotoxicity assay was purchased from Bio Basic (Amherst, NY, USA). Lipopolysaccharide (LPS), N-(1-naphthyl)-ethylenediamine, sulfanilamide, and phosphoric acid for anti-inflammatory activity were obtained from Merck (Billerica, MA, USA) and Sigma-Aldrich (St. Louis, MO, USA). 2,20-azinobis-(3-ethylbenzothiazolin-6 sulfonic acid) (ABTS), potassium persulfate, 6-hydroxy-2,5,7,8-tetramethyl-chroman-2-carboxylic acid (Trolox), and gallic acid monohydrate were purchased from Sigma-Aldrich (St. Louis, MO, USA). Folin–Ciocalteu reagent, TPTZ (2,4,6-tri(2-pyridyl)-s-triazine) and quercetin dehydrate were obtained from Merck (Billerica, MA, USA). Ethanol, methanol, sodium carbonate, aluminum chloride, potassium acetate, and formic acid for total phenolic and flavonoid detection, and HPLC assay were obtained from RCl Labscan (Bangkok, Thailand). All reagents and chemicals used were analytical grade.
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2

Antioxidant and Anti-inflammatory Assays

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Folin-Ciocalteu reagent, TPTZ (2,4,6-tri(2-pyridyl)-s-triazine), and quercetin dehydrate were purchased from Merck (Billerica, MA, USA). 2,2-diphenyl-1-picrylhydrazil (DPPH), 2,2′-azinobis-(3-ethylbenzothiazolin-6 sulfonic acid) (ABTS), 6-hydroxy-2,5,7,8-tetramethyl-chroman-2-carboxylic acid (Trolox), gallic acid monohydrate, resveratrol, oxyresveratrol, and lipopolysaccharide (LPS) from Escherichia coli O111:B4 were obtained from Sigma-Aldrich (St. Louis, MO, USA). RAW 264.7 cell culture media and Dulbecco’s Modified Eagle’s Medium (DMEM) were purchased from Gibco (Grand Island, NY, USA). 3-(4,5-dimethylthizaol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) was obtained from Bio Basic (Toronto, ON, Canada). Primary antibodies, anti-beta-actin monoclonal antibody, anti-iNOS/NOS II polyclonal antibody, and anti-COX-2 polyclonal antibody, as well as the peroxidase-conjugated secondary antibody were purchased from EMD Millipore corporation (Temecula, CA, USA).
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3

Quantifying Antioxidant Potential of Terpenes

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The terpenes (−)-isopulegol (≥99%), menthol (≥99%), p-cymene (≥99%), eucalyptol (≥99%), (R)-(+)-pulegone (97%), γ-terpinene (97%), α-terpinene (≥95%), linalool (≥97%), (S)-(+)-carvone (≥96%), citronellal (≥95%), (−)-terpinene-4-ol (≥95%), citral (≥95%), menthone (≥90%), farnesene (mixtures of isomers, ≥90%), α-phellandrene (≥90%), β-myrcene (≥90%), and TPTZ (2,4,6-Tri(2-pyridyl)-s-triazine)) were obtained from Sigma-Aldrich (St. Louis, MO, USA). Acetic acid (ACS), FeCl3 × 6H2O, FeSO4 × 7H2O, phosphoric acid (ACS), hydrochloric acid (ACS), chloroform (ACS), ethyl acetate (ACS), 2-butanone (ACS), and methanol (analytic purity grade) were obtained from Polish Reagents (Gliwice, Poland). The standards trolox ((±)-6-hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid, 97%) and gallic acid (>98%) were purchased from Sigma-Aldrich (St. Louis, MO, USA).
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4

Extraction and Quantification of Antioxidants

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Extra-pure grade solvents used for the extractions were purchased from commercial suppliers. Folin–Ciocalteu reagent, gallic acid, DPPH (2,2-diphenyl-1-picrylhydrazyl), TPTZ (2,4,6-Tri (2-pyridyl)-s-triazine), phloroglucinol, pyrocatechol, ascorbic acid, and glucose were obtained from Sigma-Aldrich (St. Louis, MO, USA).
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5

Antioxidant Capacity Assessment Protocols

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Folin–Ciocalteu and gallic acid-1-hydrate (C6H2(OH)3COOH.H2O) were from PanReac (Castellar del Vallès, Barcelona); tannic acid, TPTZ 2,4,6-tri (2-pyridyl)-s-triazine, Trolox (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid), DPPH (2,2-diphenyl-1-picrylhydrazyl), ABTS (2,2′-azino-bis (3-ethylbenzo thiazoline-6-sulfonic acid), potassium persulfate (K2S2O8), NADH (nicotine-adenine dinucleotide reduced), NBT (nitro blue tetrazolium) ≥97%, and PMS (phenazine methosulfate) were from Sigma-Aldrich (Buenos Aires, Argentina); 1-butanol, NED (1- naphthyl ethylenediamine dihydrochloride), and sulfanilic acid were from Merck (Darmstadt, Germany); procyanidin A2 was from Extrasynthese (Genay, França); potassium iodate was from VWR Analar Normapur; and sodium nitroprusside was from Riedel-de Haën (Charlotte, NC, USA). All reagents were pro analysis grade. All absorbance measurements were performed in a Perkin-Elmer Lambda 25 (Watertown, MA, USA). The reagents were weighed on an analytical balance (Sartorius ± 0.0001 g).
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6

Determination of Antioxidant Capacity

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Ferric chloride (III) hexahydrate (FeCl3·6H2O), Folin–Ciocalteu, Trolox (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid), TPTZ 2,4,6-tri(2-pyridyl)-s-triazine, DPPH (2,2-diphenyl-1-picrylhydrazyl) and methanol (CH3OH) were purchased from Sigma-Aldrich; gallic acid-1-hydrate (C6H2(OH)3COOH·H2O) was purchased from Acros Organics, and sodium carbonate (Na2CO3) was purchased from ICS Science group. All reagents were pro analysis grade. The reagents were weighed in an analytical balance (Sartorius ± 0.0001 g).
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7

Analytical Methods for Phytochemical Profiling

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The determinations were performed using analytical grade reagents intended for liquid chromatography: hydrochloric acid, formic acid, ethanol by Sigma-Aldrich; methanol by J.T. Baker Malinckrodt Baker B.V. Holland. Acetonitryl CHROMASOLV® gradient grade, ≥99.9% by Sigma-Aldrich. Sugar analytical standards by BioXtra, ≥99% HPLC grade, were obtained from Sigma-Aldrich. Deionized water was obtained using a HLP 5P deionizer manufactured by Hydrolab Polska. Oleanolic acid standard, 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) diammonium salt, 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox), 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ), and 2,2-diphenyl-1- picrylhydrazyl (DPPH) were purchased from Sigma-Aldrich (Steinheim, Germany).
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8

Antioxidant Potential of Urushiol Compounds

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Urushiol standards (C15:3, C15:2, C15:1) were purchased from Phytolab GmbH and Co. (Dutendorfer Straße, Vestenbergsgreuth, Germany). Fustin, fisetin, sulfuretin, and butein were purchased from Chromadex Co. (Irvine, CA, USA). Gallic acid, methyl gallate, quercetin, taxifolin, PGG, Folin-Ciocalteu reagent, 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino -bis(3-ethylbenzothiazoline-6-sulfonic acid), diammonium salt (ABTS), 6-hydroxy-2,5,7,8 -tetramethylchromane-2-carboxylic acid (Trolox), 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ), potassium persulfate, tannic acid, bovine serum albumin (BSA), and sodium dodecyl sulfate (SDS) were purchased from Sigma-Aldrich (St. Louis, MO, USA). HPLC grade methanol, acetonitrile, and deionized water were purchased from J.T. Baker Co. (Phillipsburg, NJ, USA). All of the other reagents were of analytical grade.
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9

Quantification of Polyphenolic Compounds

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Standards of catechin (Cat), epicatechin (ECat), procyanidin B2 (PC B2), procyanidin C1 (PC C1), gallic acid (GA), protocatechuic acid (PA), p-hydroxybenzoic acid (p-HBA), cyanidin-3-O-glucoside (Cy-3-Glu), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox), 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl (DPPH), 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ), sodium acetate, ferric chloride hexahydrate, ferrozine, and ammonium acetate were purchased from Sigma-Aldrich (St. Louis, MO, USA). HPLC grade methyl tert-butyl ether (MTBE) and methanol were purchased from J.T. Baker (Deventer, The Netherlands). All other reagents were of analytical grade and were purchased from Chempur (Piekary Śląskie, Poland). Chromacol PTFE syringe filters (0.2 µm pore size) were purchased from Shim-Pol (Izabelin, Poland). Ultrapure water (resistivity 18.2 MΩ cm), obtained from a Milli-Q purification system (Millipore, Bedford, MA, USA), was used for all analyses.
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10

Characterization of Local Malaysian Ingredients

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Raw ingredients such as white rice, cassava roots, and leaves were bought locally from Penang, Malaysia. Analytical grade sulfuric acid, sodium hydroxide, sodium carbonate, sodium acetate, ferric chloride, petroleum ether, ammonium solution (28%), potassium iodide, and acetic acid glacial were purchased from Orec (Malaysia). Kjeldahl catalyst tablet, silver nitrate solution, and iodine solution were obtained from Merck (Malaysia). Boric acid, ethanol absolute, methyl spirit, and hydrochloric acid were purchased from Ever Gainful Enterprise (Malaysia). Lactic acid bacteria (BIMO‐CF) starter culture was obtained from AZ Farm (Malaysia). However, amylose standard from potato starch, DPPH reagent, 2,4,6‐Tri(2‐pyridyl)‐s‐triazine (TPTZ), Folin–Ciocalteu's reagent, chlorophyll, and gallic acid were purchased from Sigma‐Aldrich (Malaysia).
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