All 23 standard compounds used for the quantification analysis were purchased from Sigma-Aldrich (purity 99.0%, all chromatographic grade), including butanoic acid, acetic acid, thujone, methyl eugenol, p-cymene, α-pinene, diallyl disulphide, α-terpineol, β-caryophyllene, β-myrcene, 1,8-cineole, D-limonene, linalool, methional, nonanal, phenylethanal, ethyl caprylate, 4-methyl-5-thiazoleethanol, (E)-2-octenal, (E)-2-heptenal, humulene, acetophenone, and linalyl acetate. The internal standard (2,4,5-trimethylthiazole) and n-alkanes (C8–C30) used to calculate the retention index (RI) were of chromatographic grade and purchased from Sigma-Aldrich (St, Louis, MO, USA). Diethyl ether and n-pentane for dilution and preparation of sample were obtained from Thermo Fisher Scientific Inc. (Waltham, MA, USA). High purity helium (99.999% purity) and nitrogen (99.99% purity) were purchased and produced by Beijing Tianlirenhe Trading Co., Ltd. (Beijing, China).
Ethyl caprylate
Manufactured by Merck Group
Sourced in United States
Ethyl caprylate is a chemical compound used in laboratory settings. It is a colorless liquid with a fruity odor. The chemical formula for ethyl caprylate is C10H20O2.
Automatically generated - may contain errors
Lab products found in correlation
Linalool, by Merck Group (3 mentions)
Ethyl caproate, by Merck Group (3 mentions)
α terpineol, by Merck Group (2 mentions)
D limonene, by Merck Group (2 mentions)
Epicatechin, by Yuanye Bio-Technology (2 mentions)
Ethyl acetate, by Merck Group (2 mentions)
Isoamyl acetate, by Merck Group (2 mentions)
Diethyl ether, by Thermo Fisher Scientific (1 mentions)
Nonanal, by Merck Group (1 mentions)
α pinene, by Merck Group (1 mentions)
Acetophenone, by Merck Group (1 mentions)
P cymene, by Merck Group (1 mentions)
β caryophyllene, by Merck Group (1 mentions)
1 8 cineole, by Merck Group (1 mentions)
Linalyl acetate, by Merck Group (1 mentions)
Methional, by Merck Group (1 mentions)
Butanoic acid, by Merck Group (1 mentions)
Methyleugenol, by Merck Group (1 mentions)
Humulene, by Merck Group (1 mentions)
Diallyl disulphide, by Merck Group (1 mentions)
5 protocols using ethyl caprylate
1
Quantification of Volatile Compounds
2
Formulation and Evaluation of CZL Delivery
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CZL was kindly supplied by Pharco Pharmaceutical Inc (Alexandria, Egypt). Polyglycolized glycerides (Maisine® 35-1, Labrafil® M 1944 CS, Transcutol® P, Capryol® 90 [CP], Lauroglycol® 90 [LG], Labrafac®, and Solubilisant Gamma® 2429 [SG]) were kindly donated by Gattefossé (Nanterre, France). Butyl lactate (BL), Triacetin, Ethyl oleate, and Ethyl caprylate were purchased from Sigma-Aldrich Co. (St Louis, MO, USA) and Miglyol® 812 from Sasol (Hamburg, Germany). Aerosil® 200 and Aeroperl® 300 (amorphous and granular silicon dioxide) were from Degussa (Marl, Germany). Acetonitrile high performance liquid chromatography (HPLC) grade from Romil Ltd (Cambridge, England). Avicel PH 101 (microcrystalline cellulose) from JRS (Rosenberg, Germany). Absolute ethanol (propanol) from Merck KGaA (Darmstadt, Germany). Propylene glycol from Al Gomhuria Medicine Trade Co. (Cairo, Egypt). All other chemicals used were of analytical grade.
3
Analytical Standards for Metabolomics
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The organic acid standards (L-tartaric acid, lactic acid, malic acid, acetic acid, etc.), as well as polyphenol standards (protocatechuic acid, p-hydroxybenzonic acid, chlorogenic acid, vanillic acid, (-)-epigallocatechin gallate, epicatechin, vanillin, p-coumaric acid, (-)-epicatechin gallate, isoferulic acid, etc.), were purchased from Shanghai Yuanye Bio-Technology Co., Ltd. (Shanghai, China). Water was purified using a Milli-Q system from Millipore (Bedford, MA, USA).
Isoamyl ethanoate, benzylcarbinyl acetate, isobutyl acetate, butyl acetate, propyl acetate, hexyl acetate β-damascenone, naphthalene, cinnamene, linalool, citronellol, d-limonene, α-terpineol, nerol oxide, ethyl dodecylate, ethyl heptoate, ethyl caproate, ethyl butanoate, ethyl caprylate, ethyl propanoate, ethyl isobutyrate, ethyl n-valerate, etc., were provided by Sigma-Aldrich (Shanghai, China). The internal standard of 4-methyl-1-pentanol was obtained from Tokyo Chemical Industry Co. Ltd. (Tokyo, Japan). The calculation of retention indices (RIs) was used with n-alkanes (C8-C40) purchased from Supelco (Bellefonte, PA, USA).
Isoamyl ethanoate, benzylcarbinyl acetate, isobutyl acetate, butyl acetate, propyl acetate, hexyl acetate β-damascenone, naphthalene, cinnamene, linalool, citronellol, d-limonene, α-terpineol, nerol oxide, ethyl dodecylate, ethyl heptoate, ethyl caproate, ethyl butanoate, ethyl caprylate, ethyl propanoate, ethyl isobutyrate, ethyl n-valerate, etc., were provided by Sigma-Aldrich (Shanghai, China). The internal standard of 4-methyl-1-pentanol was obtained from Tokyo Chemical Industry Co. Ltd. (Tokyo, Japan). The calculation of retention indices (RIs) was used with n-alkanes (C8-C40) purchased from Supelco (Bellefonte, PA, USA).
4
Profiling Pears and Kiwifruits' Organic Acids and Polyphenols
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Zaosu pears and Xuxiang kiwifruits were from a local supermarket (Lanzhou, Gansu, China) and were selected for optimal ripeness and the absence of damage or spoilage. The analytical standards used in the organic acid and polyphenol analysis, oxalic, tartaric, l -malic, lactic, citric, succinic, quinic, protocatechuic, chlorogenic, and gallic acids, as well as epicatechin, catechin, caffeic acid, and phloretin, were from Shanghai Yuanye Biotechnology Co., Ltd. (Shanghai, China). The aromatic compound standards, ethyl acetate, ethyl caproate, ethyl caprylate, isoamyl acetate, hexyl acetate, n-pentanol, phenylethanol, n-hexanol, n-heptanol, β-citronellol, geraniol, linalool, nerol, β-damascenone, and 2-octanol (internal standard), were from Sigma-Aldrich (St. Louis, MO, USA).
5
Gas Chromatographic Analysis of Esters and Alcohols
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The apparatus was a Perkin Elmer AutoSystem Gas Chromatograph equipped with Perkin Elmer Headspace Sampler HS40. The column was a CP-WAX 52CB 50 m × 0.32 mm × 1.2 µm. The samples were thermostatted for 20 min at 70 °C before being injected into the column. The temperature program started at 50 °C, was held for 2 min then increased to 80 °C at 3 °C/min, with a final increase to 140 °C at 15 °C/min. Two types of detector (temperature at 150 °C) were connected to this apparatus, a Flame Ionisation Detector (FID) for esters and higher alcohol analyses, and an Electron Capture Detector (ECD) for vicinal diketone analysis. The following standards were purchased from Sigma-Aldrich: isoamyl-acetate >95% (CAS 123-92-2), ethyl-acetate >99% (CAS 141-78-6), isoamyl alcohols <98% (CAS 123-51-3), isobutanol >99% (CAS 78-83-1), propanol >99% (CAS 67-63-0), ethyl caprylate >98% (CAS 106-32-1), ethyl caproate >99% (CAS 123-66-0), acetaldehydes >99% (CAS 75-07-0), 2,3-butanedione >97% (CAS 431-03-8) and 2,3-pentanedione >99% (CAS 600-14-6).
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