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Gao Min M Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, - - 2014
Marine organisms have usually been viewed as sources of environmentally friendly compounds with antifouling activity. We performed a series of operations to investigate the antifouling potential of the marine microalga Dunaliella salina. For the ethyl acetate crude extract, the antialgal activity was significant, and the EC50 value against Skeletonema costatum ...
Tan Bo B Tailored Therapeutics, Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, IN46285. Electronic address: - - 2014
The tricarboxylic acid (TCA) cycle is an interface between glycolysis, lipid metabolism, and amino acid metabolism. Increasing interest in cancer metabolism has created a demand for rapid and sensitive methods for quantifying the TCA cycle intermediates and related organic acids. We have developed an LC-MS/MS method to quantify the TCA ...
Caliskan Mustafa - - 2014
Serum uric acid is related to hypertension and cardiovascular diseases. Masked hypertension is associated with an increase in cardiovascular risk. The aim of our study was to evaluate the serum uric acid level and its relationship with carotid intima-media thickness (IMT) in patients with masked hypertension. A total of 114 ...
Wang Jing J Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, - - 2015
Three new oleanane triterpenoids, 2α,3β,29-trihydroxyolean-12-en-28-oic acid (1), 2α,3β-dihydroxy-23-oxo-olean-12-en-28-oic acid (2) and 2α,3β,21β,22α-tetrahydroxyolean-12-en-28,29-dioic acid (3), and ten known ones, maslinic acid (4), arjunolic acid (5), oleanolic acid (6), 3-epi-oleanolic acid (7), stachlic acid A (8), serratagenic acid (9), gypsogenic acid (10), 2α,3β-dihydroxyol-ean-13(18)-en-28-oic acid (11), mesembryanthemoidigenic acid (12) and 12α-hydroxy-δ-lactone (13), were ...
Dušek Martin M Research Institute for Brewing and Malting, Prague PLC, Lı́pová 15, CZ-120 44 Prague 2, Czech - - 2014
Hops represent an important source of β-acids with antimicrobial and sensory properties. Transformation products of β-acids formed during their oxidation, mainly hulupones, have been shown to have an interesting kind of bitterness. Their structures were recently elucidated using LC-TOFMS and 1D/2D NMR in solution after thermal treatment of the hop ...
Hložek Tomáš T Institute of Forensic Medicine and Toxicology, First Faculty of Medicine, Charles University in Prague and General University Hospital, 121 08 Prague 2, Czech Republic. Electronic address: - - 2014
A simple, cost effective, and fast gas chromatography method with flame ionization detection (GC-FID) for simultaneous measurement of ethylene glycol, 1,2-propylene glycol and glycolic acid was developed and validated for clinical toxicology purposes. This new method employs a relatively less used class of derivatization agents - alkyl chloroformates, allowing the ...
Agarwal Vibhuti V Post Graduate Student, Department of Biochemistry, Subharti Medical College, Swami Vivakanand Subharti University , Meerut, India - - 2014
Pre-eclampsia (PE) affects approximately 3% of all pregnancies worldwide, with onset of symptoms in the late second or third trimester, commonly after 32(nd) week. It is common in nulliparous women. To avoid complications it is necessary to diagnose it in advance, but the available tools are unable to clinch the ...
Xu Jinzhong J a Institute of Marine Biology, Ocean College, Zhejiang University , Hangzhou 310058 , P.R. - - 2014
A new cyclopeptide, together with three known amino acid derivatives, was isolated from marine-derived fungus Aspergillus flavipes, which was found in the gut of isopod Ligia oceanica. The novel peptide contains four amino acid units, proline, 5-methoxyanthranilic acid, isoleucine and 3-aminoacrylic acid. Its structure was determined on the basis of ...
Beitlich Nicole - - 2014
In the present study, pollen-identical pure manuka and kanuka honeys and an Australian jelly bush honey were analyzed for the non-volatiles by UHPLC-PDA-MS/MS and for the volatiles by HS-SPME-GC/MS. A chromatographic profile matchup by means of characteristic marker compounds achieved a clear discrimination between manuka, kanuka, and jelly bush honey. ...
Farag Mohamed A MA a Pharmacognosy Department , Faculty of Pharmacy, Cairo University , Kasr El-Aini 11562 , - - 2014
This study attempts to elucidate the secondary metabolite profiles of Ficus lyrata leaves and fruits grown in Egypt. Non-targeted metabolite profiling via ultra performance liquid chromatography (UPLC)-qTOF-MS was used to identify various chemical classes in F. lyrata fruits and leaves (i.e. flavonoids, phenolic acids and fatty acids) analysed by chemometrics. ...
Bosco Renato - - 2014
This paper describes a method to detect and quantitate the endogenous plant hormones (±)-2-cis-4-trans-abscisic acid, (-)-jasmonic acid and salicylic acid by means of ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) in hybrid rose leaf matrices. Deuterium-labeled [(2)H6] (+)-2-cis-4-trans-abscisic acid, [(2)H6] (±)-jasmonic acid, and [(2)H4]-salicylic acid were used as internal ...
Aslan Mutay M Department of Medical Biochemistry, Akdeniz University Medical School, 07070, Antalya, Turkey, - - 2014
The aim of this study was to determine circulating omega-6, omega-3 polyunsaturated fatty acids and prostaglandin E2 (PGE2) levels in steady state sickle cell disease (SCD) patients. Blood was collected from healthy hemoglobin volunteers and steady state homozygous HbSS patients who had not received blood transfusions in the last 3 months. ...
Tanemossu Serge Alain Fobofou SA Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; Laboratory of Natural Products Chemistry, Department of Chemistry, University of Dschang, P.O. Box 67, Dschang, - - 2014
Hypericum riparium A. Chev. is a Cameroonian medicinal plant belonging to the family Guttiferae. Chemical investigation of the methanol extract of the stem bark of H. riparium led to the isolation of four natural products, 7,7'-dihydroxy-6,6'-biscoumarin (1), 7,7'-dihydroxy-8,8'-biscoumarin (2), 7-methoxy-6,7'-dicoumarinyl ether (3), 2'-hydroxy-5'-(7″-methoxycoumarin-6″-yl)-4'-methoxyphenylpropanoic acid (4), together with one known 7,7'-dimethoxy-6,6'-biscoumarin ...
Chavan J J JJ Department of Botany, Yashavantrao Chavan Institute of Science, Satara, 415 001 India ; Department of Botany, Shivaji University, Kolhapur, 416 004 - - 2014
An efficient protocol was developed for the rapid in vitro multiplication of an endemic and critically endangered medicinal herb, Ceropegia noorjahaniae Ans., via enhanced axillary bud proliferation from nodal explants. The effects of phytohormones [6-benzylaminopurine (BAP), kinetin (Kin) thidiazuron (TDZ), indole-3-acetic acid (IAA), indole-3-butyric acid (IBA) or α-naphthalene acetic acid ...
Prasad G Shyam - - 2014
Different fungi viz. Aspergillus niger NCIM 589, A.ochraceous NCIM 1140, Cunninghamella blakesleeana NCIM 687, C. echinulata NCIM 691, Rhizopus stolonifer NCIM 880, Mucor rouxi MTCC 386, Trichothecium roseum NCIM 1147 were screened for their potential to biotransform anti-hyperlipidemia and anti-hypertriglyceridemia drug, fenofibrate to fenofibric acid, the active metabolite and other ...
Liu Jing J Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, - - 2015
This study aimed to investigate the volatile and non-volatile compositions as well as sensory properties of the most common monovarietal white wine (var. Solaris) in Denmark. Using dynamic headspace sampling (DHS) coupled to gas chromatography-mass spectrometry (GC-MS), 79 volatile compounds were identified. Among the major non-volatile components glycerol, sulphite, sugars ...
Salminen Juha-Pekka JP a Department of Chemistry , University of Turku , Turku FIN-20014 , - - 2014
Bergenia crassifolia L., Saxifragaceae, is an evergreen perennial plant known in traditional medicine of Russia, Mongolia and China. Polyphenols are responsible for the number of pharmacological effects of Bergenia. UPLC-DAD-QqQ-MS and LC-DAD-ESI-QTOF-MS were used for the rapid profiling of phenolic compounds, mainly hydrolysable tannins. Green leaves consisted of 55% ellagitannins, ...
Hawkey Elizabeth E Department of Behavioral Neuroscience, School of Medicine, Oregon Health & Science University, Portland, OR, United - - 2014
Interest in the value of omega-3 (n-3) fatty acid supplementation for treatment of ADHD remains high. No prior meta-analysis has examined whether ADHD is associated with alterations in blood lipid levels and meta-analyses of supplementation have reached conflicting conclusions. We report two new meta-analyses. Study 1 examined blood levels of ...
Feuereisen Michelle M - - 2014
The objective of this study was to characterize the phenolic composition of Brazilian pepper (Schinus terebinthifolius Raddi) exocarp extract. Using UHPLC-DAD-MS/MS analysis, four anthocyanins, three biflavonoids, gallic acid, and two types of hydrolyzable tannins (galloyl glucoses, galloyl shikimic acids) were tentatively identified. The structure of the so far unknown 7-O-methylpelargonidin ...
Held Patrice K PK Wisconsin State Laboratory of Hygiene, 465 Henry Mall, Madison, Wisconsin 53706 United States; Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI. Electronic address: - - 2014
Orotic aciduria in the presence of hyperammonemia is a key indicator for a defect in the urea cycle, specifically ornithine transcarbamylase deficiency (OTC). Current newborn screening (NBS) protocols can detect several defects of the urea cycle, but screening for OTC deficiency remains a challenge due to the lack of a ...
Kim Sun Hee SH National Academy of Agricultural Science, Rural Development Administration, Seodun-Dong, Suwon, 441-707, Korea, - - 2014
The introduction of novel traits to cells often requires the stable coexpression of multiple genes within the same cell. Herein, we report that C22 very long-chain polyunsaturated fatty acids (VLC-PUFAs) were synthesized from C18 precursors by reactions catalyzed by delta 6-desaturase, an ELOVL5 involved in VLC-PUFA elongation, and delta 5-desaturase. ...
Sanfilippo Km - - 2014
ABSTRACT Zoledronic acid and pamidronate are the two bisphosphonates approved to reduce multiple myeloma skeletal complications in the United States. Little prior evidence exists comparing survival outcomes between the two. We evaluated the incidence of skeletal related events and overall survival in myeloma patients treated with zoledronic acid versus pamidronate ...
Wang Chao C College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, - - 2014
Bioassay-guided phytochemical investigation of the EtOAc fraction from the leaves of a Chinese medicinal herb, Eucalyptus citriodora Hook, resulted in the isolation of a new compound rhodomyrtosone E (1), along with 12 known compounds (2-13). The structure of the new compound was established by 1D and 2D NMR, MS data ...
Reiding Karli Robert - - 2014
Protein glycosylation is an important post-translational modification associated, among others, with diseases and the efficacy of biopharmaceuticals. MALDI-TOF-MS can be performed to study glycosylation in a high-throughput manner, but is hampered by the instability and ionization bias experienced by sialylated glycan species. Stabilization and neutralization of these sialic acids can ...
Mu Lin L Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, Boston, - - 2014
The role of saturated fatty acids (SFAs) in chronic disease remains controversial; inflammation is one pathway by which SFAs influence the risk for chronic disease. The aim of this study was to investigate the associations between red blood cell (RBC) phospholipid SFAs and systemic inflammation. As part of a randomized ...
Uvaydov Yuriy Y Chemistry Department, New York University, 31 Washington Place, New York, NY 10003-5180, USA. - - 2014
A direct method has been developed for the in vitro synthesis of stable DNA-protein cross-links (DPC's) between guanine and amino acids (lysine and arginine). This method employs the combination of guanine neutral radicals, G(-H)˙, and side-chain C-centered amino acid radicals. The latter were generated indirectly after first causing the selective ...
Huang Yu-Jie YJ State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 501 Haike Road, Zhangjiang Hi-Tech Park, Shanghai 201203, People's Republic of - - 2014
Thirteen new dammarane-type triterpenoids (1-13) and four known analogues, gentirigenic acid (14) and the gentirigeosides A, B, and E (15-17), were isolated from Gentianella azurea. Their structures were elucidated by detailed analysis of the NMR, MS, and X-ray crystallographic data. This is the first report of dammarane-type triterpenoids in the ...
Vigor Claire C Institut des Biomolécules Max Mousseron IBMM, UMR 5247 CNRS/Université Montpellier 1/Université Montpellier 2, - - 2014
Metabolites of non-enzymatic lipid peroxidation of polyunsaturated fatty acids notably omega-3 and omega-6 fatty acids have become important biomarkers of lipid products. Especially the arachidonic acid-derived F2-isoprostanes are the classic in vivo biomarker for oxidative stress in biological systems. In recent years other isoprostanes from eicosapentaenoic, docosahexaenoic, adrenic and α-linolenic ...
Takach Edward E DMPK Department, Sanofi, 153 2nd Avenue, Waltham, MA 02451, - - 2014
Quantifying amino acids in biological matrices is typically performed using liquid chromatography (LC) coupled with fluorescent detection (FLD), requiring both derivatization and complete baseline separation of all amino acids. Due to its high specificity and sensitivity, the use of UPLC-MS/MS eliminates the derivatization step and allows for overlapping amino acid ...
Yamamoto Eiichi E DDS Research, Global Formulation Research, Pharmaceutical Science and Technology Core Function Unit, Eisai Product Creation Systems, Eisai Co. Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan. Electronic address: - - 2014
This report describes the application of partially fluorinated carboxylic acids as ion-pairing reagents for basic analytes in high-performance liquid chromatography coupled with electrospray ionization mass spectrometry (LC/ESI-MS) in positive-ion mode. Partially fluoridated carboxylic acids such as difluoroacetic acid, 3,3,3-trifluoropropionic acid and 3,3,3-trifluoromethyl-2-trifluoromethylpropionic acid functioned as volatile paired-ion similarly as trifluoroacetic ...
Huang Tengfang T Boyce Thompson Institute for Plant Research, Ithaca, NY, - - 2014
Increasing methionine in potato tubers is desirable, both to increase the availability of this limiting essential amino acid and to enhance the aroma of baked and fried potatoes. Previous attempts to elevate potato methionine content using transgenic approaches have focused on increasing methionine biosynthesis. Higher isoleucine accumulation in these transgenic ...
Etzbach Lena L Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) and Pharmaceutical Biotechnology, Saarland University , Campus C2 3, 66123 Saarbrücken, - - 2014
Cystomanamides A-D were isolated as novel natural product scaffolds from Cystobacter fuscus MCy9118, and their structures were established by spectroscopic techniques including 2D NMR, LC-SPE-NMR/-MS, and HR-MS. The cystomanamides contain β-hydroxy amino acids along with 3-amino-9-methyldecanoic acid that is N-glycosylated in cystomanamide C and D. The gene cluster for cystomanamide ...
Dündar Rıza R Kızıltepe State Hospital, ENT Department, Mardin, - - 2014
This study investigated the effects of ascorbic acid and N-acetyl cysteine (NAC) antioxidants on the development of myringosclerosis (MS) in an experimental model. Myringotomies were performed in the ears of 15 guinea pigs, and Spongostan(®) pieces were placed on the perforated regions of the tympanic membrane. The subjects were divided ...
Zhang Yi-Bei YB Shanghai Research Center for Modernization of Traditional Chinese Medicine, National Engineering Laboratory for TCM Standardization Technology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 201203, PR - - 2014
Five new oleanane and ursane type triterpenes, namely uncarinic acids F-J (1-5), together with six known triterpenic acids (6-11) were isolated from the stems and hooks of Uncaria rhynchophylla. Structure elucidation of 1-5 was based on the integrated analyses of high-resolution MS data, 1-D ((1)H NMR, (13)C NMR, DEPT) and ...
Zhao Jin-Ge JG Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, RM702-2303, No. 199, Renai Road, Dushuhu Higher Edu. Town, Suzhou 215123, PR - - 2014
More than 10 red anthocyanins and related glucosides have been isolated and identified from purple sweet potato (Ipomoea batatas, Ayamurasaki) in the recent decades. This paper reports the isolation of colourless caffeoyl compounds from purple sweet potato using AB-8 macroresin absorption and semi-preparative HPLC-DAD. The structures of the five isolated ...
Fitian Asem I AI Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, Florida, - - 2014
The metabolic pathway disturbances associated with hepatocellular carcinoma (HCC) remain unsatisfactorily characterized. Determination of the metabolic alterations associated with the presence of HCC can improve our understanding of the pathophysiology of this cancer and may provide opportunities for improved disease monitoring of patients at risk for HCC development. To characterize ...
Jeffries Kristen A KA Department of Chemistry, University of South Florida, Tampa, Florida, - - 2014
Long-chain fatty acid amides are cell-signaling lipids identified in mammals and, recently, in invertebrates, as well. Many details regarding fatty acid amide metabolism remain unclear. Herein, we demonstrate that Drosophila melanogaster is an excellent model system for the study long-chain fatty acid amide metabolism as we have quantified the endogenous ...
Bao Jiangyin J Department of Chemistry, Michigan State University, East Lansing, MI, 48824, - - 2014
Oxidized fatty acids, and particularly cyclopentenone oxylipins, are electrophilic metabolites that play diverse physiological roles. Current understanding is limited regarding how ion fragmentation provides essential information about oxylipin structures. In this work, unusual products of the collisional activation of deprotonated cyclopentenone oxylipins were investigated. The cyclopentenone oxylipin 12-oxo-phytodienoic acid (OPDA) ...
Uri Csilla C Agricultural Biotechnology Center, P.O. Box 411, H-2101 Gödöllő, - - 2014
Using gas chromatography-mass spectrometry (GC-MS) as a system for the detection of amino acids, organic acids, sugars, sugar alcohols, and fatty acids, we characterised six commercial potato cultivars (Hópehely, Katica, Lorett, Somogyi kifli, Vénusz Gold, and White Lady) with different pedigrees, starch contents, cooking types, and dormancy periods, in five ...
Frommherz Lara L Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Department of Safety and Quality of Fruit and Vegetables, Haid-und-Neu-Straße 9, 76131 Karlsruhe, Germany. Electronic address: - - 2014
Folic acid (FA) concentrations of nine fortified vitamin juices were determined with the aim to study the FA degradation and to investigate the deviation from the declared label value. The juices were received shortly after bottling and were analyzed monthly during controlled storage conditions (light and dark) over one year. ...
He Xiao-Song XS State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China, - - 2014
Compost leachates were collected to investigate the influence of the composition and removal of volatile fatty acids (VFAs), humic-like substances (HSs), and dissolved organic nitrogen (DON) on heavy metal distribution during the leachate treatment process. The results showed that acetic and propionic acids accounted for 81.3 to 93.84 % of VFAs, ...
Yu Linkai L Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University , 5180 Kurokawa, Imizu, Toyama 939-0398, - - 2014
Campechic acids A (1) and B (2), two new polyketides, were isolated from the culture extract of Streptomyces sp., and their structures were determined by NMR and MS spectroscopic analysis. Campechic acids are polyether-polyketides functionalized by two tetrahydrofuran rings, an enolized 1,3-diketone, and multiple methyl substitutions. Absolute configuration of nine ...
Müller Daniel C DC Analytisch-Biologisches Forschungslabor (ABF) GmbH, Goethestraße 20, D-80336Munich, Germany; Institute of Hydrochemistry and Chair for Analytical Chemistry, Technische Universität München, Marchioninistraße 17, D-81377 Munich, Germany. Electronic address: - - 2014
Mass spectrometry is an ideal tool for investigations of the metabolome in human plasma. To investigate the impact of smoking on the human metabolome, we performed an untargeted metabolic fingerprinting using GC-TOF-MS with EDTA-plasma samples from 25 smokers and 25 non-smokers. The observed elevated levels in the monounsaturated fatty acids ...
Kıvrak Ibrahim I Muğla Sıtkı Koçman University, Research Laboratory Center, MGL Food Analysis Laboratory, Kötekli, 48000 Muğla, Turkey. Electronic address: - - 2014
Wild edible and medicinal mushroom, Calvatia gigantea, was quantitatively analyzed for the determination of its free amino acids using ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The concentrations of total free amino acids, essential and non-essential amino acids were 199.65mg/100g, 113.69mg/100g, and 85.96mg/100g in C. gigantea, respectively. This study showed ...
Khan Mohammed Ayub MA Defence Food Research Laboratory, Siddarthanagar, Mysore, 570 011 - - 2014
Convenient, ready-to consume thermally processed potato stuffed parothas retaining their natural sensory attributes have been developed. Response Surface Methodology was used to optimize the Stuffing: dough ratio along with other ingredients. Optimized Stuffed parothas were packed in indigenously developed retortable pouches and processed in a steam-air retort. The time-temperature history ...
Kuwabara Tomohiro T Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka, 422-8526, - - 2014
Mass spectrometry has become a popular analytical tool because of its high sensitivity and specificity. The use of a chiral derivatization reagent for the mass spectrometry (MS) detection seems to be efficient for the enantiomeric separation of racemates. However, the number of chiral reagents for the liquid chromatography (LC)-MS/MS analysis ...
Liu Juanjuan J Chongqing Engineering Research Center for Fungal Insecticides, School of Life Science, Chongqing University, Chongqing, 400030, - - 2014
Based on transcriptome library, an NADH: flavinoxidore ductase/NADH oxidase gene (Nox) was cloned from Nomuraea rileyi. The 1,663-bp full-length cDNA contains an open reading frame of 1,233 bp coding 410 amino acids. The expression level of Nox was up-regulated and co-related to the intracellular H2O2 concentration during microsclerotium (MS) initiation. Rotenone ...
Peng Jixing J Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of - - 2014
Two novel sorbicillinoids combining a bicyclo[2.2.2]octane with a 2-methoxyphenol moiety, named sorbicatechols A (1) and B (2), were isolated from the culture of the marine sediment-derived fungus Penicillium chrysogenum PJX-17, together with the known protocatechuic acid methyl ester and caffeic acid methyl ester (3). Their structures, including absolute configurations, were ...
Saini R K RK Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysore, 570 020 - - 2014
Fresh leaves of M. oleifera plants were analysed for nutritionally important phytoconstituents and feasible commercially used dehydration method were evaluated to preserve these in dehydrated leaves. Trans-lutein, trans-β-carotene and trans-zeaxanthin were found as the major carotenoids in fresh leaves, accounting for 36.9, 18.2 and 5.5 mg/100 g FW, respectively. Similarly, high amounts ...
Knittelfelder Oskar L OL Institute of Molecular Biosciences, University of Graz, Humboldtstraße 50/II, 8010 Graz, - - 2014
A new UPLC-based untargeted lipidomic approach using a qTOF hybrid mass spectrometer is introduced. The applied binary gradient enables separations of lipid species including constitutional isomeric compounds and low abundant lipid classes such as phosphatidic acid (PA). Addition of phosphoric acid to the solvents improves peak shapes for acidic phospholipids. ...
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