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4 protocols using e ε viniferin

1

Cultivation of Plant In Vitro Cultures

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Reagents needed for cultivation of in vitro cultures, e.g., MS and SH basal media, agar, PGRs, and sucrose were acquired from Duchefa Farma B.V. (Haarlem, The Netherlands).
Ultrapure water was obtained using Millipore Milli-Q system (Merck Millipore, Molsheim, France). Acetonitrile and methanol were purchased from Thermo Fisher Scientific (Illkirch-Graffenstaden, France). Standard compounds L-leucine, L-isoleucine, L-phenylalanine, L-tyrosine, L-tryptophan, L-proline, citric acid, gallic acid, coutaric acid, trans-resveratrol, cis-resveratrol, E-piceid, catechin, epicatechin, catechin gallate, tyrosinase, and L-DOPA were purchased from Sigma-Aldrich (St. Louis, MO, USA). Rhamnetin, E-ε-viniferin, quercetin 3-O-glucoside, quercetin 3-O-glucuronide, quercetin-3-O-galactoside, procyanidin B1, procyanidin B2, procyanidin B3, and procyanidin C1 were obtained from ExtraSynthèse (Genay, France); caftaric acid was delivered by Carbosynth (Compton, Berkshire, UK), while E-ε-viniferin, Z/E-vitisin B, ampelopsin A, and hopeaphenol were obtained by previous extraction from grape stems [50 (link)].
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2

Cultivation of Plant In Vitro Cultures

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Reagents needed for cultivation of in vitro cultures, e.g., MS and SH basal media, agar, PGRs, and sucrose were acquired from Duchefa Farma B.V. (Haarlem, The Netherlands).
Ultrapure water was obtained using Millipore Milli-Q system (Merck Millipore, Molsheim, France). Acetonitrile and methanol were purchased from Thermo Fisher Scientific (Illkirch-Graffenstaden, France). Standard compounds L-leucine, L-isoleucine, L-phenylalanine, L-tyrosine, L-tryptophan, L-proline, citric acid, gallic acid, coutaric acid, trans-resveratrol, cis-resveratrol, E-piceid, catechin, epicatechin, catechin gallate, tyrosinase, and L-DOPA were purchased from Sigma-Aldrich (St. Louis, MO, USA). Rhamnetin, E-ε-viniferin, quercetin 3-O-glucoside, quercetin 3-O-glucuronide, quercetin-3-O-galactoside, procyanidin B1, procyanidin B2, procyanidin B3, and procyanidin C1 were obtained from ExtraSynthèse (Genay, France); caftaric acid was delivered by Carbosynth (Compton, Berkshire, UK), while E-ε-viniferin, Z/E-vitisin B, ampelopsin A, and hopeaphenol were obtained by previous extraction from grape stems [50 (link)].
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3

Characterization of Phenolic Compounds

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Acetonitrile and methanol were purchased from Thermo Fisher Scientific (France). A Millipore Milli-Q system (Merck Millipore, Molsheim, France) provided ultrapure water. L-leucine, L-isoleucine, L-phenylalanine, L-tyrosine, L-tryptophan, L-proline, citric acid, E-resveratrol, E-piceatannol, catechin, epicatechin, coutaric acid, fertaric acid, E-piceid, kaempferol 3-O-glucoside, and kaempferol 3-O-glucuronide were obtained from Sigma-Aldrich (St. Louis, MO, USA). Caftaric acid was purchased from Carbosynth (Compton, Berkshire, UK). Rhamnetin, E-ε-viniferin, kaempferol 3-O-rutinoside, quercetin 3-O-glucoside, quercetin 3-O-glucuronide, myricetin 3-O-glucoside, procyanidin B1, procyanidin B2, procyanidin B3, procyanidin C1, and kaempferol 3-O-rutinoside were purchased from Extrasynthèse (Genay, France). Pallidol and E-δ-viniferin were graciously provided by Dr. Mary-Lorène Goddard (EA-3991, Université de Haute-Alsace, Colmar, France). E-miyabenol C was obtained from Ambinter (Paris, France).
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4

Antioxidant Potential of Grape Phenolics

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Acetonitrile and ethanol were purchased from Thermo Fisher Scientific (Courtaboeuf, France). A Millipore Milli-Q system (Merck Millipore, Molsheim, Germany) provided ultrapure water. Gallic acid, caffeic acid, E-Resveratrol, E-piceatannol, catechin, epicatechin, gallocatechin, E-piceid, astilbin, quercetin-3-O-glucuronide, procyanidin B1 and procyanidin B2 were obtained from Sigma-Aldrich (St. Louis, MO, USA); E-ε-viniferin and quercetin-3-O-glucoside were purchased from Extrasynthèse (Genay, France) and E-miyabenol C from Ambinter (Paris, France). Pallidol and E-δ-viniferin were graciously provided by Mary-Lorène Goddard (EA-3991, Université de Haute-Alsace, Colmar, France). Z/E-vitisin B, ampelopsin A and hopeaphenol were purified from grape canes as previously described [37 (link)]. The 2,2′-Azo-bis-(2-amidinopropane) hydrochloride (ABAP), fluorescein, 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS), potassium persulfate, 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,4,6-Tri(2-pyridyl)-s-triazine (TPTZ), Iron(III) chloride (FeCl3), copper(II) chloride (CuCl2), 2,9-Dimethyl-1,10-phenanthroline (neocuproine) and 3-(2-Pyridyl)-5,6-diphenyl-1,2,4-triazine-p,p′-disulfonic acid monosodium salt hydrate (ferrozine) were obtained from (Sigma-Aldrich, Saint-Quentin Fallavier, France).
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