Long-chain phenols

Quantitative Detection of Thitsiol and Urushiol as Markers from the Gluta usitata Lacquer Tree Using HPLC

“…Samples were injected into the HPLC instrument, using 20 µL for thitsiol analysis conditions and 10 µL for urushiol analysis conditions. For thitsiol analysis, acetonitrile and 20 vol.% aqueous acetic acid were mixed at a ratio of 9:1 and analyzed for 40 min using the isocratic elution method and 0.5 mL/min as the flow rate [ 13 ]. For urushiol analysis, acetonitrile and 0.1 vol.% aqueous trifluoroacetic acid were mixed at a ratio of 9:1 and analyzed for 20 min using the isocratic elution method and 1 mL/min as the flow rate [ 25 ].…”

“…Traditional lacquer is primarily produced in Asia. Some examples of lacquer trees include Toxicodendron vernicifluum ( T. vernicifluum ) in Korea, Japan, and China; Toxicodendron succedaneum ( T. succedaneum ) in Taiwan and Vietnam; and Gluta usitata ( G. usitata ) in Myanmar [ 8 , 9 , 10 , 11 , 12 , 13 ]. Lacquer sap from these trees contains catechols, water, lipids, proteins, and other lacquer components.…”

Quantitative Detection of Thitsiol and Urushiol as Markers from the Gluta usitata Lacquer Tree Using HPLC

“…Samples were injected into the HPLC instrument, using 20 µL for thitsiol analysis conditions and 10 µL for urushiol analysis conditions. For thitsiol analysis, acetonitrile and 20 vol.% aqueous acetic acid were mixed at a ratio of 9:1 and analyzed for 40 min using the isocratic elution method and 0.5 mL/min as the flow rate [ 13 ]. For urushiol analysis, acetonitrile and 0.1 vol.% aqueous trifluoroacetic acid were mixed at a ratio of 9:1 and analyzed for 20 min using the isocratic elution method and 1 mL/min as the flow rate [ 25 ].…”

“…Traditional lacquer is primarily produced in Asia. Some examples of lacquer trees include Toxicodendron vernicifluum ( T. vernicifluum ) in Korea, Japan, and China; Toxicodendron succedaneum ( T. succedaneum ) in Taiwan and Vietnam; and Gluta usitata ( G. usitata ) in Myanmar [ 8 , 9 , 10 , 11 , 12 , 13 ]. Lacquer sap from these trees contains catechols, water, lipids, proteins, and other lacquer components.…”

Antioxidant activity of Egyptian Eucalyptus camaldulensisvar. brevirostrisleaf extracts

“…0.3 mg of the collected and dried HPLC fractions [17]. The samples were heated to 70 8C for 20 min, standard compounds were treated correspondingly.…”

Quantitative Detection of Thitsiol and Urushiol as Markers from the Gluta usitata Lacquer Tree Using HPLC

“…Samples were injected into the HPLC instrument, using 20 µL for thitsiol analysis conditions and 10 µL for urushiol analysis conditions. For thitsiol analysis, acetonitrile and 20 vol.% aqueous acetic acid were mixed at a ratio of 9:1 and analyzed for 40 min using the isocratic elution method and 0.5 mL/min as the flow rate [ 13 ]. For urushiol analysis, acetonitrile and 0.1 vol.% aqueous trifluoroacetic acid were mixed at a ratio of 9:1 and analyzed for 20 min using the isocratic elution method and 1 mL/min as the flow rate [ 25 ].…”

“…Traditional lacquer is primarily produced in Asia. Some examples of lacquer trees include Toxicodendron vernicifluum ( T. vernicifluum ) in Korea, Japan, and China; Toxicodendron succedaneum ( T. succedaneum ) in Taiwan and Vietnam; and Gluta usitata ( G. usitata ) in Myanmar [ 8 , 9 , 10 , 11 , 12 , 13 ]. Lacquer sap from these trees contains catechols, water, lipids, proteins, and other lacquer components.…”

Antioxidant activity of Egyptian Eucalyptus camaldulensisvar. brevirostrisleaf extracts

“…0.3 mg of the collected and dried HPLC fractions [17]. The samples were heated to 70 8C for 20 min, standard compounds were treated correspondingly.…”

Quantitative Detection of Thitsiol and Urushiol as Markers from the Gluta usitata Lacquer Tree Using HPLC

“…Samples were injected into the HPLC instrument, using 20 µL for thitsiol analysis conditions and 10 µL for urushiol analysis conditions. For thitsiol analysis, acetonitrile and 20 vol.% aqueous acetic acid were mixed at a ratio of 9:1 and analyzed for 40 min using the isocratic elution method and 0.5 mL/min as the flow rate [ 13 ]. For urushiol analysis, acetonitrile and 0.1 vol.% aqueous trifluoroacetic acid were mixed at a ratio of 9:1 and analyzed for 20 min using the isocratic elution method and 1 mL/min as the flow rate [ 25 ].…”

“…Traditional lacquer is primarily produced in Asia. Some examples of lacquer trees include Toxicodendron vernicifluum ( T. vernicifluum ) in Korea, Japan, and China; Toxicodendron succedaneum ( T. succedaneum ) in Taiwan and Vietnam; and Gluta usitata ( G. usitata ) in Myanmar [ 8 , 9 , 10 , 11 , 12 , 13 ]. Lacquer sap from these trees contains catechols, water, lipids, proteins, and other lacquer components.…”

Antioxidant activity of Egyptian Eucalyptus camaldulensisvar. brevirostrisleaf extracts

“…0.3 mg of the collected and dried HPLC fractions [17]. The samples were heated to 70 8C for 20 min, standard compounds were treated correspondingly.…”