All the chemicals used were of HPLC gradient or analytical grade. Diethyl ether was purchased from Lach-Ner, Czech Republic. Acetonitrile was purchased from Sigma-Aldrich, Germany. Hydrochloric acid (38%) and formic acid were purchased from Penta, Czech Republic. The xanthohumol standard (95%) was purchased from Hopsteiner, Germany. Standards of isoxanthohumol, 6-prenylnaringenin and 8-prenylnaringenin were purchased from Toroma Organics Ltd., Germany. Milli-Q water was used for HPLC analysis. Magnesium oxide light (BP, Ph. Eur., USP, E 530) extra pure, pharma grade was purchased from Merck Life Science Ltd., Prague, Czech Republic.
Diethyl ether
Manufactured by Lach-Ner
Sourced in Czechia
Diethyl ether is a colorless, volatile, and highly flammable liquid used as a solvent in various laboratory applications. Its primary function is to dissolve and extract a wide range of organic compounds, including fats, oils, and certain alkaloids. Diethyl ether has a characteristic sweet odor and low boiling point, making it useful for processes that require rapid evaporation.
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Lab products found in correlation
Acetonitrile, by Merck Group (1 mentions)
1 methylimidazole, by Merck Group (1 mentions)
Triethylamine, by Thermo Fisher Scientific (1 mentions)
1 bromobutane, by Merck Group (1 mentions)
1 bromododecane, by Thermo Fisher Scientific (1 mentions)
1 bromooctane, by Thermo Fisher Scientific (1 mentions)
1 chlorobutane, by Merck Group (1 mentions)
Anhydrous sodium sulphate, by Merck Group (1 mentions)
1 4 dibromobutane, by Merck Group (1 mentions)
Chloroform, by Lach-Ner (1 mentions)
Sodium hydroxide (naoh), by Lach-Ner (1 mentions)
Hydrochloric acid (hcl), by Lach-Ner (1 mentions)
Hydrogen peroxide, by Lach-Ner (1 mentions)
Trisodium citrate dihydrate, by Merck Group (1 mentions)
Methacryloyl chloride, by Merck Group (1 mentions)
4 cyano 4 phenylcarbonothioylthio pentanoic acid, by Merck Group (1 mentions)
Glycine methyl ester hydro chloride, by Merck Group (1 mentions)
Ethyl acetate, by Lach-Ner (1 mentions)
Milli q gradient a10 system, by Merck Group (1 mentions)
Fecl3 6h2o, by Merck Group (1 mentions)
6 protocols using diethyl ether
1
Quantification of Hop Compounds
2
Synthesis of Ionic Liquids from Alkyl Halides
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The following chemicals were used for the synthesis of ILs: 1-bromobutane (Sigma-Aldrich, 99%), 1-bromooctane (Acros Organics, 99%), 1-bromododecane (Acros Organics, 98%), triethylamine (Acros Organics, 99% pure), 1-methylimidazole, 1-chlorobutane (Sigma Aldrich, 99,5%), diethylether (Lach-Ner, 99%), n-pentane (Penta, p.a.). The 1-methylimidazole was purified by distillation and drying with potassium hydroxide. The other chemicals were used as received.
3
Synthesis of DMAH SDA for UTL
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(6R,10S)-6,10-dimethyl-5-azoniaspiro[4,5] decane hydroxide (DMAH), the SDA for the synthesis of germanosilicate UTL , was prepared based on the procedure reported in Ref. 23 (link). In total, 16.07 g of (2R,6S)-2,6-dimethylpiperidine (Sigma Aldrich, 98%) was added drop-wise to 140 ml of water solution containing 5.68 g of sodium hydroxide (Penta, 98%) and 30.66 g of 1,4-dibromobutane (Aldrich, 99%). Subsequently, the mixture was refluxed under intensive stirring for 12 h. After cooling in an ice bath, an ice-cooled 50% (wt.) solution of NaOH (70 ml) was added, and further solid NaOH was added until forming the oil product. After crystallisation, the solid was filtered and extracted with chloroform (Lachner, 99.92%). The organic fraction was dried, using anhydrous sodium sulphate (Sigma Aldrich, 99%), and partly evaporated (50–100 mL of residual volume); then, diethyl ether (Lachner, 99.97%) was added to the remaining mixture. The final solid product was washed three times with diethyl ether. The bromide salt was ion-exchanged into the hydroxide form using an Ambersep® 900(OH) anion exchange resin (0.8 mmol of SDA per 1 g of anion exchange resin) and concentrated by evaporation to prepare a 1 M solution.
4
Synthesis of Polymer-Coated Magnetic Nanoparticles
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FeCl3·6H2O, FeCl2·4H2O, trisodium citrate dihydrate, glycine methyl ester hydrochloride, triethylamine, methacryloyl chloride, 1-phenyl-3-pyrazolidinone, NH2OH·HCl, 2,2′-azobis(2-methylpropionitrile) (AIBN), 4-Cyano-4-(phenylcarbonothioylthio)pentanoic acid (CTPA), phosphate buffered saline (PBS), 1,2-diaminoethane and silica gel (pore size 60 Å) were purchased from Sigma-Aldrich (St. Louis, MO, USA). Aqueous ammonia, hydrogen peroxide, HCl, 1,2-dichloroethane (DCE), NaCl, methanol, ethyl acetate, NaOH and diethyl ether were purchased from Lach-Ner, Neratovice, Czech Republic. Albumin was obtained from Serva (Heidelberg, Germany). Sephadex® G-20 was purchased from GE Healthcare (Chicago, IL, USA). Aqueous solutions of FeCl3·6H2O and FeCl2·4H2O were purified by centrifugation for 10 min at 4400 rpm. 1,2-Dichlorethane, triethylamine, 2,2′-azobis(2-methylpropionitrile) (AIBN) and 4-Cyano-4-(phenylcarbonothioylthio)pentanoic acid (CTPA) were distilled before use. Ethanol was rectified. N-(2-hydroxypropyl)methacrylamide) (HPMA) was prepared according to a literature procedure [69 (link)]. All aqueous solutions in this study were prepared from ultrapure Q-water (18.2 MΩ) ultrafiltered on a Milli-Q Gradient A10 system (Milipore, Molsheim, France).
5
Synthesis of Hexamethylene-bis(trimethylammonium) Dibromide
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SDA1 was prepared using a method described elsewhere.39 (link) For the preparation of hexamethylene-bis(trimethylammonium) dibromide, 37.4 g of 1,6-dibromohexane (96%, Sigma Aldrich) was mixed with 82.5 g of trimethylamine solution (31–35 wt% in ethanol, Sigma Aldrich) and 200 ml of absolute ethanol (Lachner) with a magnetic stirrer for 2 days at ambient temperature. After that, the reaction mixture was washed with ethyl acetate (99.97%, Fisher Scientific) and diethyl ether (99.97%, Lachner). The final product was separated by filtration and dried at room temperature for 12 h.
Hexamethylene-bis(trimethylammonium) dibromide was transformed into hydroxide form using Ambersep® 900(OH) anion exchange resin (Acros Organics, 0.8 mmol of SDA1 per 1 g of anion exchange resin). The solution of SDA1 was concentrated under low pressure (35 Torr) at 30 °C until the hydroxide concentration >1.0 M.
Hexamethylene-bis(trimethylammonium) dibromide was transformed into hydroxide form using Ambersep® 900(OH) anion exchange resin (Acros Organics, 0.8 mmol of SDA1 per 1 g of anion exchange resin). The solution of SDA1 was concentrated under low pressure (35 Torr) at 30 °C until the hydroxide concentration >1.0 M.
6
Preparation and Characterization of PVA-Starch Films
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4.4'-methylenebis(cyclohexyl diisocyanate) (H 12 DI) and dimethyl sulfoxide (DMSO) were purchased from Sigma-Aldrich, France. Acetone was purchased from Reachem Slovakia, Slovakia. Diethyl ether was purchased from LACH-NER, Czech Republic. Sodium chloride was purchased from Aldrich, Germany. Starch from potato was purchased from Beroxfood, Germany. Poly(vinyl alcohol) (PVA), M w 100000 (degree of hydrolisation 86-89 mol%, viscosity (4% in water, 20°C) is 34-45 mPa•s), was purchased from Fluka, Switzerland. PVA was dried under vacuum at 60°C for 24 h and kept in a desiccator. All other reagents were used as received.
Maltogenic α-amylase (EC 3.2.1.133) (4000 U/ ml) from Bacillus stearothermophilus (BsMa) and α-amylase (EC 3.2.1.1) (25000 U/ml) from Bacillus subtilis were obtained from Novozymes, Denmark. Commercial enzymes preparations were used as purchased without additional purification.
Maltogenic α-amylase (EC 3.2.1.133) (4000 U/ ml) from Bacillus stearothermophilus (BsMa) and α-amylase (EC 3.2.1.1) (25000 U/ml) from Bacillus subtilis were obtained from Novozymes, Denmark. Commercial enzymes preparations were used as purchased without additional purification.
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