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Ninhydrin solution

Manufactured by Thermo Fisher Scientific
Sourced in United Kingdom

Ninhydrin solution is a chemical reagent commonly used in forensic laboratories and chemical analysis applications. It is a clear, colorless liquid that reacts with amino acids, proteins, and other nitrogen-containing compounds to produce a distinctive purple-blue color. The core function of ninhydrin solution is to detect and visualize the presence of these compounds, which can be useful for various applications such as fingerprint analysis and thin-layer chromatography.

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2 protocols using ninhydrin solution

1

Antimicrobial and Cytotoxicity Evaluation

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Methanol, n-hexane, and Acetone (Loba chemie, Mumbai, India) were used to prepare the solvent extracts. Dimethyl sulphoxide (DMSO; Riedel-de Haën, Seelze, Germany) and Mueller–Hinton broth (Himedia, Maharashtra, India) were used for the antimicrobial screening experiments.
Reagents used for the quantitative and qualitative assessments (ninhydrin solution, Benedict’s reagent, Millon’s reagent, magnesium ribbon, iodine, sulphuric acid, acetic acid, and Molish’s reagent) were obtained from Alfa Aesar (Lancashire, UK). NaHCO3, FeCl3, vanillin, HCl, gallic acid, quercetin, sodium nitrite, AlCl3, and chloroform were obtained from Sigma-Aldrich (Schnelldorf, Germany). Trolox was purchase from Sigma-Aldrich (St. Louis, MO, USA) was ((s)-6-hydroxy-2,5,7,8-tetramethyl chroman-2-carboxylic acid)), while DPPH reagent (2,2-diphenyl-1-1-picrylhydrazyl) was purchased from Sigma-Aldrich (Schnelldorf, Germany). For the cytotoxicity test, RPMI-1640 (Roswell Park Memorial Institute) medium was brought from Sigma-Norwich (Norfolk, UK). Pen-Strep solution, which consists of streptomycin and penicillin in concentrations of 10 mg/mL and 10,000 units/mL, respectively, was brought from BI (New Delhi, India), the L-glutamine solution was brought from Sigma (Welwyn Garden, UK), and the MTS reagent was purchased from Promega (Madison, WI, USA).
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2

Phytochemical Screening and Bioactivity

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Benedicts and Millon’s reagents were purchased from Gadot (United States). Ninhydrin solution, Molishs reagent, H2SO4, chloroform, magnesium ribbon, HCl, FeCl3, NaOH, and iodine solution were obtained from Alfa Aesar (England). Porcine pancreatic α-amylase enzyme, dimethyl sulfoxide (DMSO), Trolox ((s)-(−)-6 hydroxy-2,5,7,8-tetramethychroman-2-carboxylic acid), Folin-Ciocalteu’s reagent, porcine pancreatic lipase enzyme, dinitrosalicylic acid (DNSA), Doxorubicin, and 2, 2-Diphenyl-1-picrylhydrazyl (DPPH) were purchased from Sigma-Aldrich (Germany). Gallic acid, porcine pancreatic lipase enzyme, methanol, 1% L-glutamine, Dragendroff reagent, 1% Penicillin/Streptomycin, and sodium carbonate were brought from Merck (Darmstadt, Germany).
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