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14 protocols using m hydroxydiphenyl

1

Apple Pomace Pectin Extraction Protocol

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Apple pomace was obtained in a small scale plant by processing apples (Malus domestica ‘Fălticeni’) from the 2016 harvest, in the Fălticeni area of Suceava, Romania. The pomace was dried in an oven with air circulation at 60 °C, until constant weight, and then powdered in a food processor. The resulting powder was passed through an analytical sieve shaker Retsch AS 200 (Retsch GmbH, Haan, Germany) and the apple pomace with particle sizes of 125–200 µm was used for the pectin extraction.
Celluclast 1.5L, citric acid, ethyl alcohol, sulfamic acid, potassium hydroxide, sulfuric acid, sodium tetraborate, sodium hydroxide, d-galacturonic acid, m-hydroxydiphenyl, and commercial apple and citrus pectin were purchased from Merck KGaA (Darmstadt, Germany).
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2

Pectin Extraction from Apple Pomace

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Apple pomace used for pectin extraction was obtained by processing Malus domestica 'Fălticeni' apples into juice in a small-scale plant, in the Fălticeni area of Suceava (47°27'10.5"N, 26°17'38.8"E), Romania. After juice extraction, apple pomace was dried at 60 °C in an oven with air circulation until constant weight. The dried pomace was powdered and passed through an analytical sieve shaker Retsch AS 200 (Retsch GmbH, Germany). The pomace with particle sizes of 125-200 µm was used to extract pectin.
Commercial apple and citrus pectin were purchased from Merck KGaA (Germany). All chemicals and reagents, including citric acid, ethyl alcohol, D-galacturonic acid, mhydroxydiphenyl, sodium hydroxide and hydrochloric acid were of analytical grade and were purchased from Merck KGaA (Germany).
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3

Pectin Extraction from Apple Pomace

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Apple pomace used for pectin extraction was obtained by processing Malus domestica 'Fălticeni' apples into juice in a small-scale plant, in the Fălticeni area of Suceava (47°27'10.5"N, 26°17'38.8"E), Romania. After juice extraction, apple pomace was dried at 60 °C in an oven with air circulation until constant weight. The dried pomace was powdered and passed through an analytical sieve shaker Retsch AS 200 (Retsch GmbH, Germany). The pomace with particle sizes of 125-200 µm was used to extract pectin.
Commercial apple and citrus pectin were purchased from Merck KGaA (Germany). All chemicals and reagents, including citric acid, ethyl alcohol, D-galacturonic acid, mhydroxydiphenyl, sodium hydroxide and hydrochloric acid were of analytical grade and were purchased from Merck KGaA (Germany).
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4

Cassia Seed Extraction and Analysis

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Cassia seeds were obtained from a market in Ya’an, China and dried at a temperature of 45 °C for two days. Subsequently, the dried Cassia seeds were ground to pass through a 60 mesh sieve and stored at −20 °C for further analysis.
Trifluoroacetic acid, rhamnose, glucuronic acid, galacturonic acid, mannose, glucose, galactose, xylose, arabinose, m-hydroxydiphenyl, griess reagent, sodium nitroprusside (SNP), 1-phenyl-3-methyl-5-pyrazolone (PMP), 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), hydrogen peroxide, vitamin C, and butylated hydroxytoluene (BHT) were purchased from Sigma-Aldrich (St. Louis, MO, USA). All other reagents and chemicals used were of analytical grade.
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5

Grape Pomace Characterization and Fractionation

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Grape pomace was collected by processing two different Vitis vinifera varieties (Fetească Neagră and Rară Neagră) from a 2019 harvest, cultivated in the Bugeac area, Republic of Moldova. The grape pomace was dried in an oven with air circulation Zhicheng ZRD-A5055 (Zhicheng, Shanghai, China) at 50 °C until constant weight was achieved. Then, dried pomace was powdered using a food processor (KitchenAid, Benton Harbor, MN, USA) and separated it on the following particle size intervals: <125 µm, ≥125–<200 µm and ≥200–<300 µm using an analytical sieve shaker Retsch AS 200 Basic (Retsch GmbH, Haan, Germany).
Nitric acid, sulfuric acid, citric acid, sulfamic acid, hydrochloric acid, sodium hydroxide, m-hydroxydiphenyl, potassium hydroxide, sodium tetraborate, D-galacturonic acid, and ethyl alcohol were acquired from Sigma-Aldrich (Darmstadt, Germany).
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6

Extraction and Characterization of Snow Chrysanthemum

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The flower of snow chrysanthemum (C. tinctoria) was purchased from a local market in Ya’an, China. Samples were dried at the temperature of 45 °C for 2 days. Subsequently, the samples were ground to pass through a 60 mesh sieve and stored at −20 °C for further analysis.
Trifluoroacetic acid, rhamnose (Rha), mannose (Man), glucuronic acid (GlcA), galacturonic acid (GalA), glucose (Glc), galactose (Gal), xylose (Xyl), arabinose (Ara), 1-phenyl-3-methyl-5-pyrazolone (PMP), m-hydroxydiphenyl, griess reagent, sodium nitroprusside (SNP), 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), vitamin C, butylated hydroxytoluene (BHT), and 6-hydroxy-2,5,7,8-tetramethyl chroman-2-carboxylic acid (Trolox) were purchased from Sigma-Aldrich (St. Louis, MO, USA). All other reagents and chemicals used were of analytical grade.
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7

Chondroitin Sulfate and Heparan Sulfate Quantification

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GAGs were extracted from ~2x107 cells and highly-sulfated cell surface CS/DS were released by β-elimination and purified as described previously [23 (link)]. The HexUA content was determined using an m-hydroxydiphenyl reaction. Uronic acid was hydrolyzed in 80% sulfuric acid containing tetraborate at 80°C, incubated with m-hydroxydiphenyl (Sigma Aldrich) at room temperature and measured at 540nm using heparin as standard [5 (link)].
10 μg CS/DS were digested with 10 mU of chondroitin ABC for 2h. The unsaturated disaccharides were labeled with 5 μl of 0.1 M 2-Aminoacridon (AMAC) in 15% CH3COOH/DMSO solution. After 10 min incubation at RT, 1 M NaBH3CN was added and the mixture was incubated 16 h at 37°C followed by fluorophore assisted carbohydrate electrophoresis (FACE). AMAC-labeled disaccharides were separated on 30% Borate-polyacrylamid gel [35 (link)]. HS were analyzed as described before. In order to analyze HS composition, cell pellets of B16V cell lines were prepared as described previously. After enzymatic removal of CS/DS, the heparin lyase I-, II- and III- digested GAGs were fractioned by RPIP-HPLC. The peaks were identified by co-elution with standard HS disaccharides [5 (link)].
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8

Coriolus versicolor Bioactive Compounds

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Fruiting body of Coriolus versicolor used in this study is cultivated in Changbai Mountain district and identified by Professor Yi Xin at Department of Biotechnology, Dalian Medical University, Dalian, P.R. China. TriFlouracetic Acid (TFA) CAS No: 76-05-1, m-hydroxydiphenyl, CAS No: 580-51-8, Sulfamic Acid CAS No: 5329-14-6, Sephacryl S-500 High Resolution, CAS No: GE17-0613-01, 3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyl tetrazolium bromide (MTT) Cat No: 3511-096-K, Concanavalin A (ConA) CAS No: 11028-71-0, Neutral Red CAS No: 553-24-2, and Cyclophosphamide (CP) CAS No: 6055-19-2, were purchased from Sigma Chemical Co. (St. Louis, MO, USA). Medium RPMI 1640 with improved nutrient solution was purchased from Gibco industry (Grand Island, NY, USA, Cat No: 11875119). CCK-8, Sarcoma 180 (S-180) were purchased from (KeyGENBioTCH, Cat No: KGA317) China. All other reagents and chemicals used were of analytical grade made in China.
This study was carried out in strict accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of the National Institutes of Health. The protocol was approved by the Committee on the Ethics of Animal Experiments of the Dalian Medical University. All surgeries were performed under sodium pentobarbital anesthesia, and efforts were made to minimize suffering.
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9

Characterization of Chrysanthemum Tea Varieties

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Different chrysanthemum teas, including C. tinctoria (snow chrysanthemum tea), C. indicum, C. morifolium ‘Huangju’, C. morifolium ‘Gongju’, and C. morifolium ‘Hangbaiju’, were purchased from a local market in Ya'an, China. Chrysanthemum teas were dried at the temperature of 45 °C for 2 days, and then the dried samples were ground to pass through a 60 mesh sieve, and stored at −20 °C for further analysis.
Trifluoroacetic acid, monosaccharide standards (rhamnose, mannose, glucuronic acid, galacturonic acid, glucose, galactose, xylose and arabinose), 1-phenyl-3-methyl-5-pyrazolone (PMP), hydrogen peroxide (H2O2), m-hydroxydiphenyl, griess reagent, vitamin C, sodium nitroprusside (SNP), 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS), butylated hydroxytoluene (BHT), 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl (DPPH), sodium azide, bovine serum albumin (BSA), and aminoguanidine were purchased from Sigma-Aldrich (St. Louis, MO, USA). All other reagents and chemicals used were of analytical grade.
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10

Detailed Chemical Analysis Protocol

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All of the chemicals and reagents used in this study were of analytical grade. Ethanol, acetone, sodium carbonate (Na2CO3), and potassium sulfate (K2SO4) were purchased from Gram-mol doo (Zagreb, Croatia); sodium tetraborate, L-cystein, sulfamic acid, gelatin, potassium hydroxide, chloroform, 1-phenyl-3-methyl-5-pyrazolone (PMP), and 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox) from Acros Organics (Geel, Belgium); acetonitrile, trichloroacetic acid (TCA), silicone oil, and Folin–Ciocalteu reagent from Fisher Scientific (Leicestershire, UK); barium chlorid (BaCl2) from abcr GmbH (Karlsruhe, Germany), fucoidan from Fucus vesiculosus, D-galacturonic acid, phenol, m-hydroxydiphenyl, 2,2-diphenyl-1-picrylhydrazyl (DPPH), arabinose, D-(+)-glucose, L-rhamnose, D-(−)-fructose, trimethylamine, 2,2′-Azobis(2-methylpropionamidine) dihydrochloride (AAPH), D-(+)-mannose, L-(−)-fucose, and ammonium acetate from Sigma-Aldrich (St. Louis, Missouri, USA); ethyl acetate, hexane, and absolute ethanol from Carlo Erba Reagents (Cornaredo, Italy); hydrochloric acid (HCl) from TKI Hrastnik (Hrastnik, Slovenia); sodium hydroxide from Lach-Ner (Zagreb, Croatia); sulfuric acid (H2SO4) from Scharlab S.L. (Barcelona, Spain); D-(−)-ribose from TCI (Portland, OR, USA); and fluorescein sodium salt from Honeywell Riedel-de-Haën (Bucharest, Romania).
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