Targeted isolation of 1,1-diphenyl-2-picrylhydrazyl inhibitors from Saxifraga atrata using medium- and high- pressure liquid chromatography combined with online high performance liquid chromatography–1,1-diphenyl-2- picrylhydrazyl detection

2021 ◽  
Vol 1635 ◽  
pp. 461690
Author(s):  
Yangzom Dawa ◽  
Yurong Du ◽  
Qi Wang ◽  
Chengbiao Chen ◽  
Denglang Zou ◽  
...  
Keyword(s):  
High Pressure ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Pressure Liquid Chromatography ◽  
High Performance

PREPARATION OF C60 BY DETONATION A MIXTURE OF TRINITROTOLUENE AND GRAPHITE

2012 ◽  
Vol 27 (01) ◽  
pp. 1350004
Author(s):  
XIANFENG WEI ◽  
YONG HAN ◽  
LIU LIU ◽  
XINPING LONG
Keyword(s):  
High Pressure ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Temperature ◽  
High Performance ◽  
Extreme Conditions ◽  
Detonation Pressure ◽  
Detonation Synthesis ◽  
Mass Ratio ◽  
Detonation Products

To explore the practicability of C 60 synthesis under extreme conditions (high pressure and high temperature), trinitrotoluene (TNT), trinitramine (RDX) and graphite mixtures of different proportions were detonated in a vacuum container, and the detonation products were collected for detecting. The results of mass spectroscopy, high performance liquid chromatography showed significant signals of C 60, which proved that C 60 could be synthesized by detonating the mixture of TNT and graphite (in 6:4 and 7:3 mass ratio, respectively), the detonation pressure and temperature were calculated around 13 GPa and 2000 K, respectively. Both experiment results and theoretical analysis showed the importance of detonation pressure and cooling temperature in detonation synthesis of C 60.

scholarly journals High-Pressure Open-Channel On-Chip Electroosmotic Pump for Nanoflow High Performance Liquid Chromatography

2014 ◽  
Vol 86 (4) ◽  
pp. 1958-1964 ◽  
Author(s):  
Wei Wang ◽  
Congying Gu ◽  
Kyle B. Lynch ◽  
Joann J. Lu ◽  
Zhengyu Zhang ◽  
...  
Keyword(s):  
High Pressure ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Open Channel ◽  
Electroosmotic Pump ◽  
On Chip

The Presence of 5,7-Dihydroxyisoflavone in Peanuts by High Performance Liquid Chromatography Analyses

1985 ◽  
Vol 12 (2) ◽  
pp. 60-62 ◽  
Author(s):  
D. J Daigle ◽  
R. L Ory ◽  
W. D Branch
Keyword(s):  
High Pressure ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Arachis Hypogaea ◽  
High Performance ◽  
Aqueous Methanol ◽  
Uv Spectrum ◽  
Tentative Identification ◽  
Arachis Hypogaea L ◽  
Flavonoid Aglycone

Abstract The defatted flours of 43 colored and one white testa peanut (Arachis hypogaea L.) genotypes were analyzed for flavonoids. Flavonoids were extracted from the flours with aqueous methanol, hydrolyzed, and the resulting aglycones analyzed by high pressure liquid chromatography with a variable wavelenth detector. The UV spectrum and retention time coupled with those of standards allowed for the tentative identification of the principal flavonoid aglycone as 5,7-dihydroxyisoflavone (DHI).

scholarly journals Study on the hydrolysis process of food and feed samples using high pressure asher (HPA-S) to determine several amino acids by high performance liquid chromatography

2019 ◽  
Vol 2 (2) ◽  
pp. 44-50
Author(s):  
Chien Dinh Viet ◽  
Luyen Nguyen Tien ◽  
Hong Ngoc Nguyen Thi ◽  
Hieu Pham Cong ◽  
Thanh Do Tat ◽  
...  
Keyword(s):  
Amino Acids ◽  
High Pressure ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Hydrolysis Process ◽  
Food And Feed ◽  
The Common ◽  
Hydrolysis Of ◽  
Feed Samples

The study researchs on the hydrolysis process of food and feed samples using High Pressure Asher (HPA-S) to determine several amino acids by high-performance liquid chromatography (HPLC). HPA-S equipment is mainly used for samples treatment in analysis of metals by spectroscopy. However, the study also found that HPA-S can be used in hydrolysis of food and feed samples in order to analyze amino acids. The temperature of HPA-S equipment could reach 300oC and maintain continuously at 130 bar pressure, completely digetsing the most complex samples matrix within an hour. The successful study of the application of HPA-S to hydrolyze samples in order to analyze amino acids makes the time of sample preparation significantly shorter but still gave the equivalent stability, even higher than the common samples hydrolyzation.

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