Then, the supernatant was filtered through a 0.20 μm syringe filter (Waters Corporation, Milford, MA, USA). A 250 μL aliquot of the supernatant was diluted (1:4 ratio) with 0.005 M H2SO4 to ensure the acidity of solution for downstream analysis. Quantification of 2,3-BDO and free ...
The most used analytical platform for the analysis of these compounds is gas chromatography with a flame ionization detector (GC-FID) or coupled to mass spectrometry (GC-MS). Indeed, in most SIMGI® experiments, SCFAs were extracted using H2SO4 and 2-methylvaleric acid as internal standard ...
Interested in selling your old books, catalogues, journals, magazines, comics, fanzines, ephemera? We are always looking for interesting, unusual and out-of-print books to buy. We only buy books in our fields of interest and specialty, and that we feel we can resell. We base these ...
The observed breakthrough is minimum and does not exceed 1% in each cycle, and therefore did not significantly affect sinapic acid recovery yield. The process mass balance was evaluated (mass balance error of 6%) and the performance indicators, such as, yield, productivity, buffer consumption ...
Gas chromatography–mass spectrometry (GC–MS) GC–MS analyses were carried out on an Agilent 6890 gas chromatograph coupled to a Micromass Autospec Premier double sector mass spectrometer (Waters Corporation, Milford, MA, USA). The GC was equipped with a 60 m DB-5 MS capillary column (0....
This value was found to be 0.97 mM in the sample being analysed, corresponding to 9.8 ± 0.3% of chitin on insect dry mass. This result can be considered in line with chitin values found by the validating method in the no spiked prepupae and with the data reported in literature ...
- 《Journal of Chinese Mass Spectrometry Society》 被引量: 0发表: 2023年 Assessment of Four Studies on Developmental Neurotoxicity of Bisphenol A monomer in the production of polycarbonate, which is used to make food containers, such as beverage bottles, baby bottles, tableware and storage ...
The resuspended extract was injected into a 1290 A Infinity UPLC system (Waters Technologies Corporation, Milford, MA, USA) with a Waters Acquity UPLC BEH Amide column (1.7 μm, 2.1 mm × 150 mm) and analyzed with an Agilent 6530 QTOF mass spectrometry (Agilent Technologies, Santa...
A Thermo UHPLC system equipped with an ACQUITY UPLC HSS T3 (100 mm × 2.1 mm i.d., 1.8 μm; Waters, Milford, USA) was used to perform chromatographic separation. The mobile phases consisted of 0.1% formic acid in 95:5 water/acetonitrile (v/v) (A) and 0.1% formic acid in 47.5:...
In this study, lunasin was purified from a soy-based food product via strong anion exchange solid phase extraction and then subjected to top-down mass spectrometry analysis that revealed in detail the molecular diversity of lunasin in processed soybean foods. We detected multiple glycated proteoforms...