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11 protocols using ferrous sulfate feso4

1

Lipid Peroxidation Assay Protocol

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Caffeic acid phenethyl ester (CAPE), melatonin, ferrous sulfate (FeSO4) and hydrogen peroxide (H2O2) were purchased from Sigma-Aldrich (St. Louis, MO). The ALDetect™ Lipid Peroxidation Assay Kit for LPO was obtained from Enzo Life Science (Farmingdale, NY). All the used chemicals were of analytical grade and came from commercial sources.
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2

Oxidative Stress Biomarker Quantification

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Melatonin, indole-3-propionic acid, ferrous sulfate (FeSO4) and hydrogen peroxide (H2O2) were purchased from Sigma (St. Louis, MO, USA). Ethanol (96%) was purchased from Stanlab (Lublin, Poland). The LPO-586 kit for LPO was obtained from Enzo Life Science (Farmingdale, NY, USA). All the used chemicals were of analytical grade and came from commercial sources.
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3

Neuro-2a Cell Assays and Antioxidant Screening

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Neuro-2a (N2a) cell line was acquired from the Collection (ATCC, Manassas, VA, United States) whereas 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyltetrazolium bromide (MTT), bovine serum albumin (BSA), penicillin, streptomycin, 2,2-diphenyl-1-picrylhydrazyl (DPPH), Trolox, Monoamine oxidase A (MAO-A), Trizma base, 4-aminoantipyrine, 5,5′-dithiobis-(2-nitrobenzoic acid) (DTNB), tyramine, levodopa (L-DOPA), horseradish peroxidase, 2,2′-azobis (2-methyl-propionamidine)-di-hydrochloride (AAPH), hydrogen peroxide (30%), vanillic acid, tyrosinase, 2,4,6-Tris (2-pyridyl)-1,3,5-triazine (TPTZ), galantamine, 2′,7′-Dichlorodihydrofluorescein Diacetate (DCFH-DA), xanthine, ferrous sulfate (FeSO4), acetylcholinesterase (AChE), acetylthiocholine iodide (ATCI) were obtained from Sigma-Aldrich (Madrid, Spain). Clorgyline and α-kojic were from Cymit química (Barcelona, Spain). Sodium carbonate (Na2CO3), HCl, NaCl, dimethyl sulfoxide (DMSO), methanol, and potassium phosphate were supplied from Panreac (Barcelona, Spain). Dulbecco’s modified Eagle’s medium (DMEM), fetal bovine serum (FBS), Nitroblue Tetrazolium (NBT) and xanthine oxidase were purchased from Vidrafoc (Barcelona, Spain) and iron chloride (FeCl3) from Laboaragon (Zaragoza, Spain). All reagents used were of analytical quality.
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4

Antioxidant and Tyrosinase Inhibitory Assays

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2,2′-Azinobis 3-ethylbenzothiazoline-6-sulphonate (ABTS), 2,2-diphenyl-1-picrylhydrazyl-hydrate (DPPH), 2,4,6-tripyridyl-s-triazine (TPTZ), 6-hydroxy-2,5,7,8-tetramethyl chroman-2-carboxylic acid (Trolox), ammonium thiocyanate (NH4SCN), ferrous chloride (FeCl2), kojic acid, L-tyrosine, linoleic acid, oleanolic acid, ferrous sulfate (FeSO4), potassium persulfate (K2S2O8), sodium acetate trihydrate (CH3COONa.3H2O), sodium chloride (NaCl), sodium sulfate anhydrous (Na2SO4), and tyrosinase from mushroom (EC 1.14.18.1) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Acetic acid, hydrochloric acid, ethanol, calcium chloride (CaCl2), chloroform, de-ionized (DI) water, dimethyl sulfoxide (DMSO), glacial Acetic acid, petroleum ether, and sulfuric acid (H2SO4) were purchased from RCI Labscan Co., Ltd. (Bangkok, Thailand).
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5

Lipid Peroxidation Assay Protocol

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17β-Estradiol, ferrous sulfate (FeSO4), and hydrogen peroxide (H2O2) were purchased from Sigma (St. Louis, MO, USA). Ethanol (96%) was purchased from Stanlab (Lublin, Poland). The LPO-586 kit for lipid peroxidation was obtained from Enzo Life Science (Farmingdale, NY, USA). All the used chemicals were of analytical grade and came from commercial sources.
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6

Antioxidant Capacity Determination via FRAP Assay

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Methanol (CH3OH, CAS No. 67-56-1, 99.9% purity), 2,3,5-triphenyltetrazolium chloride or TPTZ (C19H15ClN4, CAS No. 298-96-4, 98% purity), hydrochloric acid (HCl, CAS No. 7647-01-0), ferric chloride (FeCl3, CAS No. 7705-08-0, 97% purity), ferrous sulfate (FeSO4, CAS No. 7782-63-0, 99% purity) and Folin–Ciocalteu reagent were purchased from Sigma-Aldrich (St. Louis, MO, USA). Gallic acid (CAS No. 5995-86-8, 98% purity) and urethane or ethyl carbamate (CAS No. 51-79-6, 98% purity) were purchased from Tokyo Chemical Industry (Tokyo, Japan).
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7

Inulin and GOS Stock Solutions

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Inulin was purchased from Sigma Aldrich (Missouri, USA) and GOS from Carbosynth (Compton, UK), and were prepared as stock solutions of 80 mg/mL. Ferrous sulfate (FeSO4) was purchased from Sigma Aldrich and 100 mM stock solutions were prepared.
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8

Reagents for Cellular and Biochemical Assays

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Bicinchoninic acid (BCA), D-glucose, Drabkin’s reagent, ferrous sulfate (FeSO4), fluorescein isothiocyanate-dextran (FITCDextran), formic acid, mannitol and PKH67 (green fluorescent cell linker) were all purchased from Sigma-Aldrich (St. Louis, MO, USA). Fetal bovine serum (FBS), L-glutamine, penicillin/streptomycin, amphotericin B and HAT (hypoxanthine/aminopterin/thymidine) were obtained from Pan Biotech (Aidenbach, Germany). 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-4′,4′′-disulfonic acid sodium salt (ferrozine) and 2,9-Dimethyl-1,10-phenanthroline(neocuproine) were purchased from Alfa Aesar (Kandel, Germany). MitoSOX Red mitochondrial superoxide indicator and pHrodo Red were purchased from Thermo Fisher (Carlsbad, CA, USA).
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9

Preparation of Inulin and GOS Stocks

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Inulin was purchased from Sigma Aldrich (Missouri, USA) and GOS from Carbosynth (Compton, UK), and were prepared as stock solutions of 80 mg/mL. Ferrous sulfate (FeSO 4 ) was purchased from Sigma Aldrich and 100 mM stock solutions were prepared.
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10

Antioxidant Properties of Sandalwood Oil

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Sandalwood oil used in the experiment was supplied by Namcheon Co., Ltd. in Seoul, South Korea. Ascorbic acid (AA), Folin-Ciocalteu reagent (FC reagent), DPPH, ABTS, potassium persulfate, ferrous sulfate (FeSO 4 ), anhydrous sodium phosphate monobasic, ferrous chloride (FeCl 2 ), pyrogallol, and ammonium thiocyanate were purchased from Sigma Chemical Co. (St. Louis, Missouri, USA). Ferric chloride (FeCl 3 ) and sodium hydroxide (NaOH) were obtained from Wako Pure Chemical Industries Ltd. (Tokyo, Japan). The pBR322 DNA and 6X DNA loading dyes were purchased from Fermentas Inc. (Glen Burnie, MD). The catalase assay kit was purchased from Cayman Chemical Company (Ann Arbor, MI, USA).
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