نتایج جستجو برای: hplc pda esi msn

تعداد نتایج: 48597  

Journal: :Journal of the American Society for Mass Spectrometry 2007

2010
PHAISARN SUTHEEBANJARD SUPAPORN BUDDEEWONG

Nowadays, instant messenger (IM) has become increasingly popular. There are eighty-two million people used IM applications to communicate online in February 2006 [1]. The MSN Messenger is the most popular with 61 percent of worldwide IM users use MSN Messenger which has been renamed to Windows Live Messenger (WLM) Windows Live Messenger (WLM) can access from many channel such as desktop compute...

Journal: :Analytical and bioanalytical chemistry 2006
Katrin Schütz Markus Persike Reinhold Carle Andreas Schieber

The anthocyanin pattern of artichoke heads (Cynara scolymus L.) has been investigated by high-performance liquid chromatography-electrospray ionization mass spectrometry. For this purpose a suitable extraction and liquid chromatographic method was developed. Besides the main anthocyanins-cyanidin 3,5-diglucoside, cyanidin 3-glucoside, cyanidin 3,5-malonyldiglucoside, cyanidin 3-(3''-malonyl)glu...

2006
Patricia Kaiser Theodorus Akerboom László Dux Hans Reinauer

The reference measurement procedure for determination of HbA(1c) (glycated haemoglobin) using HPLC(high performance liquid chromatography)-ESI(electrospray ionisation)-MS(mass spectrometry) has been modified. Main modifications were a change in the buffer composition of the HPLC, a change in the gradient elution profile and the introduction of a post-column splitting system. The long-term stabi...

2014
Inmaculada Navarro-González Rocío González-Barrio Verónica García-Valverde Ana Belén Bautista-Ortín María Jesús Periago

Edible flowers are commonly used in human nutrition and their consumption has increased in recent years. The aim of this study was to ascertain the nutritional composition and the content and profile of phenolic compounds of three edible flowers, monks cress (Tropaeolum majus), marigold (Tagetes erecta) and paracress (Spilanthes oleracea), and to determine the relationship between the presence ...

Journal: :Drug testing and analysis 2013
Yonggang Liu Peng Tan Fei Li Yanjiang Qiao

The type and content change of alkaloids of Radix Aconiti Lateralis (Lateral root of Aconitum carmichaeli Debx, an important and popular medicinal herb in Traditional Chinese Medicine) in processing were studied using high performance liquid chromatography-electrospray ionization-multi-stage mass spectrometry (HPLC-ESI-MS(n)). Extract containing alkaloids, which were known to be the main bioact...

Journal: :Arabian Journal of Chemistry 2021

Dragon fruit is a popular tropical that has high phenolic content which are the main contributors to antioxidant potential and health benefits of dragon pulp peel waste. Although some compounds in have previously been reported, comprehensive analysis complete profile Australian varieties not conducted. Thus, aim this study was extract, identify quantify phenolics from fruits grown Australia. Ph...

Journal: :Journal of chromatography. A 2002
Laura M Matz Heather M Dion Herbert H Hill

Due to the proteomics revolution, multi-dimensional separation and detection instruments are required to evaluate many peptides and proteins in single samples. In this study, electrospray ionization (ESI) ion mobility spectrometry (IMS) was evaluated as an additional separation after HPLC separations. Common HPLC mobile phase compositions (solvents, acid modifiers, and buffers) were assessed fo...

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