scholarly journals Simultaneous Quantitative Determination of Monosaccharides Including Fructose in Hydrolysates of Yogurt and Orange Juice Products by Derivatization of Monosaccharides with p-Aminobenzoic Acid Ethyl Ester Followed by HPLC

2005 ◽  
Vol 26 (10) ◽  
pp. 1533-1538 ◽  
Keyword(s):  
Quantitative Determination ◽  
Ethyl Ester ◽  
Orange Juice ◽  
Acid Ethyl Ester ◽  
Aminobenzoic Acid

Gas-Liquid Chromatographic Determination of Residues of Methane sulfonate of m-Aminobenzoic Acid Ethyl Ester in Fish

1977 ◽  
Vol 60 (4) ◽  
pp. 961-962
Author(s):  
Joe B Sills ◽  
Charles W Luhning
Keyword(s):  
Ethyl Ester ◽  
Acid Ethyl Ester ◽  
Chromatographic Determination ◽  
Fish Muscle ◽  
Aminobenzoic Acid ◽  
Flame Ionization ◽  
Chromatographic Procedure ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract In this gas-liquid chromatographic procedure for determining residues of methanesulfonate of m-aminobenzoic acid ethyl ester (MS-222) in fish muscle, homogenized tissue is extracted with distilled water, and proteins are removed by coagulation with trichloroacetic acid, centrifugation, and filtration. After careful pH adjustment of the filtrate, MS-222 is partitioned into benzene-ethyl ether and measured by alkali flame ionization gas chromatography. Tissues with known additions of 1–19 μg MS-222/ g were analyzed, with recoveries of 84–95%.

scholarly journals Effect of 3-Aminobenzoic Acid Ethyl Ester Methanesulfonate (MS-222) on Quality of Marine Cultured Turbot (Scophthalmus maximus) during Simulated Transport in Water

Fishes ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 20
Author(s):  
Jie Cao ◽  
Qi Wang ◽  
Jun Mei ◽  
Jing Xie
Keyword(s):  
Dissolved Oxygen ◽  
Ethyl Ester ◽  
Acid Ethyl Ester ◽  
Scophthalmus Maximus ◽  
Ammonia Nitrogen ◽  
Control Group ◽  
Aminobenzoic Acid ◽  
Transport Stress ◽  
Turbot Scophthalmus Maximus

This study evaluated the effect of different concentrations (20, 40 and 60 mg/L) of 3-aminobenzoic acid ethyl ester methanesulfonate (MS-222) on the quality changes in turbot during simulated transport in water. The results showed that the ammonia nitrogen content in the transportation water of each sample increased significantly, and the dissolved oxygen level decreased. The dissolved oxygen content in MS-222-treated samples was higher than that of control group (CK) samples. For turbot flesh quality, simulated transport in water led to a decrease in moisture, fat and protein contents in all samples. The MS-222-treated turbot samples showed higher pH values, glycogen contents, springiness and chewiness values and lower lactic acid contents comparing with the CK samples during simulated transport in water. In addition, the fresh and bitter amino acids in the muscle of turbot increased in each treatment group compared to the non-transported fish at the end of the simulated transport. The results showed that MS-222 treatment could retard the turbot transport stress and improve the quality of turbot during simulated transport in water.

scholarly journals Rapid, high-throughput, and quantitative determination of orange juice adulteration by Fourier-transform infrared spectroscopy

2016 ◽  
Vol 8 (28) ◽  
pp. 5581-5586 ◽  
Author(s):  
David I. Ellis ◽  
Joanne Ellis ◽  
Howbeer Muhamadali ◽  
Yun Xu ◽  
Andrew B. Horn ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Quantitative Determination ◽  
Fourier Transform Infrared Spectroscopy ◽  
High Throughput ◽  
Orange Juice ◽  
Fourier Transform Infrared ◽  
High Price

Orange juice is a hugely popular, widely consumed, and high price commodity typically traded in a concentrate form making it highly susceptible to adulteration.

scholarly journals Application of aqueous hydrazine solution for beta-elimination of O-glycans from gastric mucin.

1999 ◽  
Vol 46 (3) ◽  
pp. 753-757 ◽  
Author(s):  
D Kisiel ◽  
A Gindzieński ◽  
A Gadek
Keyword(s):  
Ethyl Ester ◽  
Acid Ethyl Ester ◽  
Gastric Mucin ◽  
Aminobenzoic Acid ◽  
Beta Elimination ◽  
Hydrazine Solution

O-Glycans from pig gastric mucin were released by beta-elimination in 0.2 M triethylamine and 50% aqueous hydrazine solution. The released glycan hydrazides were isolated using Centricon 10 separators, brought to their reducing form and reductive by labelled with p-aminobenzoic acid ethyl ester (ABEE). Labelled products were fractionated into neutral and acid fractions on a Bio-Gel P4 column, calibrated with a mixture of dextran oligosaccharides, labelled according to the same procedure.

Das Erkennen von Zersetzungen aus Gas-Chromatogrammen. Gas-chromatographische Untersuchung der thermischen Fragmentierung von Acylmalonsäurediäthylestern / Gas Chromatographic Investigation of the Thermal Cleavage of Diethyl Acylmalonate. The Recognition of Decompositions Occuring during Gas Chromatography

1972 ◽  
Vol 27 (6) ◽  
pp. 659-662 ◽  
Author(s):  
Heinrich Binder ◽  
Karl Groke
Keyword(s):  
Ethyl Ester ◽  
Chromatographic Analysis ◽  
Methyl Ketone ◽  
Acid Ethyl Ester ◽  
Diethyl Malonate ◽  
Keto Acid ◽  
Injection Port ◽  
Qualitative And Quantitative ◽  
Thermal Cleavage

Diethyl acylmalonates are decomposed during gas chromatographic analysis in the metallic injection port and metallic column. Qualitative and quantitative determination of the volatile fragments demonstrates different modes of cleavage. These fragments can be identified as: ethene, carbon dioxide, a methyl ketone, a β-keto acid ethyl ester, ethanol, diethyl malonate and a monocarboxylic ethyl ester.

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