Tracking emerging mycotoxins in food: development of an LC-MS/MS method for free and modified Alternaria toxins.
In conclusion, the established multi-analyte method proved to be fit for purpose for generating comprehensive Alternaria toxin occurrence data in different food matrices. Graphical abstract ᅟ.
PMID: 29766221 [PubMed - as supplied by publisher] (Source: Analytical and Bioanalytical Chemistry)
Source: Analytical and Bioanalytical Chemistry - May 16, 2018 Category: Chemistry Authors: Puntscher H, Kütt ML, Skrinjar P, Mikula H, Podlech J, Fröhlich J, Marko D, Warth B Tags: Anal Bioanal Chem Source Type: research
Molecular and biochemical characterization of the sunflower (Helianthus annuus L.) cytosolic and plastidial enolases in relation to seed development
Publication date: July 2018 Source:Plant Science, Volume 272 Author(s): M.A. Troncoso-Ponce, J. Rivoal, S. Dorion, R. Sánchez, M. Venegas-Calerón, A.J. Moreno-Pérez, S. Baud, R. Garcés, E. Martínez-Force In the present study, we describe the molecular and biochemical characterization of sunflower (Helianthus annuus L.) enolase (ENO, EC 4.2.1.11) proteins, which catalyze the formation of phosphoenolpyruvate, the penultimate intermediate in the glycolytic pathway. We cloned and characterized three cDNAs encoding different ENO isoforms from developing sunflower seeds. Studies using fluorescently tagged ENOs co...
Source: Plant Science - May 8, 2018 Category: Biology Source Type: research
Supplementation with sunflower seeds in beef cattle did not impact on oocyte and in vitro embryo production
Reproduction in Domestic Animals, EarlyView. (Source: Reproduction in Domestic Animals)
Source: Reproduction in Domestic Animals - March 30, 2018 Category: Reproduction Medicine Source Type: research
NMR Spectroscopy in Conjugation with Multivariate Statistical Analysis for Distinguishing Plant Origin of Edible Oils
In this study, this technique was successfully employed to analyze various refined edible oils from seven plant-origins including sunflower seed, rapeseed, sesame, soybean, peanut, corn and olive oils. A variety of fatty acids in edible oils including oleic acid, linoleic acid, linolenic acid, saturated fatty acids and the corresponding iodine values were quantified via a single NMR measurement, and principal component analysis was used to distinguish their plant origins. The compositional differences both in major and minor components were derived from the pair-wise orthogonal partial least squares discriminant analysis m...
Source: Journal of Food Composition and Analysis - March 28, 2018 Category: Food Science Source Type: research
High-throughput quantification of sodium saccharin in foods by ambient flame ionization mass spectrometry.
Abstract
Ambient flame ionization (AFI) coupled with triple quadrupole tandem mass spectrometry was developed for quantitative analysis of sodium saccharin (SAC) in various food samples. Typically, the micro-flame by the combustion of n-butane provided a heating zone for fast desorption and ionization of analytes in milliseconds. Then high ion abundance of analyte could be produced in a short time, which made AFI-MS possess a very high sensitivity for SAC detection and was particularly appropriate for the quantification in multiple reaction monitor (MRM) mode. Liquid samples were introduced into outer flam...
Source: Talanta - March 6, 2018 Category: Chemistry Authors: Li Z, Zhang F, Zhao J, Liu X, Chen X, Su Y, Guo Y Tags: Talanta Source Type: research
Anaphylaxis due to roasted sunflower seeds with tolerance to raw sunflower seeds
The consumption of edible seeds is growing worldwide. Several types of seeds have been increasingly incorporated into food items, with the consequent risk of hypersensitivity reactions that are often severe. Identification of the seed responsible for the allergic reaction is sometimes difficult to assess, which contributes to an increase seed hypersensitivity.1 Sunflower seeds are widely used as snacks, components of bread, and condiments, and its oil widely used. They are also used in animal feed. (Source: Annals of Allergy, Asthma and Immunology)
Source: Annals of Allergy, Asthma and Immunology - March 1, 2018 Category: Allergy & Immunology Authors: Marina Labella Álvarez, Teresa De Aramburu Mera, Krasimira Baynova, Borja Bartolomé Zavala, Manuel Prados Castaño Source Type: research
Anaphylaxis due to roasted sunflower seeds with tolerance to raw sunflower seeds.
PMID: 29508721 [PubMed - in process] (Source: Annals of Allergy, Asthma and Immunology)
Source: Annals of Allergy, Asthma and Immunology - March 1, 2018 Category: Allergy & Immunology Authors: Álvarez ML, Mera TA, Baynova K, Zavala BB, Castaño MP Tags: Ann Allergy Asthma Immunol Source Type: research
Integrating proteomics and enzymatic profiling to decipher seed metabolism affected by temperature in seed dormancy and germination
Publication date: Available online 2 February 2018 Source:Plant Science Author(s): Qiong Xia, Ponnaiah Maharaja, Gwendal Cueff, Loïc Rajjou, Duyen Prodhomme, Yves Gibon, Christophe Bailly, Françoise Corbineau, Patrice Meimoun, Hayat El-Maarouf-Bouteau Temperature is an important environmental factor affecting seed dormancy and germination. The mechanism by which temperature induces germination in dormant seeds is however still unclear. Proteomic study has been performed in dormant sunflower seeds during imbibition at permissive and non-permissive temperatures for germination, 20 and 10 °C, respectively. Pr...
Source: Plant Science - February 2, 2018 Category: Biology Source Type: research
Covalent bonding of Chlorogenic Acid induces structural modifications on sunflower proteins.
Abstract
Proteins and phenols coexist in the confined space of plant cells leading to reactions between them which result in new covalently bonded complex molecules. This kind of reactions has been widely observed during storage and processing of plant materials. However, the nature of the new complex molecules and their physico-chemical properties are largely unknown. Therefore we investigated the structural characteristics of covalent bonded complexes between highly pure sunflower protein isolate (SFPI, 94 wt%) and the dominant phenol in the confined space of a sunflower seed cell (chlorogenic acid, CGA)...
Source: Chemphyschem - January 4, 2018 Category: Chemistry Authors: Nikiforidis C, Karefyllakis D, Salakou S, Bitter JH, Van der Goot AJ Tags: Chemphyschem Source Type: research
Comparison of the effects of flaxseed oil and sunflower seed oil consumption on serum glucose, lipid profile, blood pressure, and lipid peroxidation in patients with metabolic syndrome
Metabolic Syndrome (MetSyn) increases the risk of type 2 diabetes and morbidity and mortality due to cardiovascular diseases. Flaxseed Oil (FO), as a functional food, is one of the major vegetal sources of essential omega-3 fatty acids. (Source: Journal of Clinical Lipidology)
Source: Journal of Clinical Lipidology - November 20, 2017 Category: Lipidology Authors: Atefeh Akrami, Farzad Nikaein, Siavash Babajafari, Shiva Faghih, Hassan Yarmohammadi Source Type: research
Chlorogenic acid induced colored reactions and their effect on carbonyls, phenolic content, and antioxidant capacity in sunflower butter cookies
This study focused on how greening intensity of sunflower butter cookies made with different sweeteners (maple, agave, corn syrups, honey and xylitol) affected greening, protein oxidation products, Folin and ABTS•+ radical scavenging ability. Cookies made with maple syrup and xylitol had higher pH and resulted in more greening. The dough made with agave syrup had highest total carbonyls caused by its highest reducing sugar content resulting in more Maillard reaction during dough preparation, while after baking cookies with highest greening (maple syrup) and highest reducing sugar (agave syrup) had higher carbonyls than o...
Source: LWT Food Science and Technology - November 1, 2017 Category: Food Science Source Type: research
A review of phytochemistry, metabolite changes, and medicinal uses of the common sunflower seed and sprouts (Helianthus annuus L.)
The sunflower (Helianthus annuus L.) seed and sprout is a ubiquitous crop with abundant nutrients and biological activities. This review summarizes the nutritional and medical importance currently recognized but ... (Source: Chemistry Central Journal)
Source: Chemistry Central Journal - September 29, 2017 Category: Chemistry Authors: Shuangshuang Guo, Yan Ge and Kriskamol Na Jom Tags: Review Source Type: research
Effect of dried sunflower seeds on incisal edge abrasion: A rare case report
Avita Rath, Priyadarshini H Ramamurthy, Bennete Aloysius Fernandes, Preena SidhuJournal of Conservative Dentistry 2017 20(2):134-136Tooth surface loss (TSL) is a complex phenomenon characterized by the loss of hard tooth structure at various locations of the teeth, usually due to more than one factor. TSL due to abrasion can be significant in patients consuming coarse, abrasive diet. The present case reports an interesting incisal edge abrasion in a female patient, attributed to a particular dietary behavior of long-term consumption of sunflower seeds. All her family members and most of the people from her native place wer...
Source: Journal of Conservative Dentistry - August 4, 2017 Category: Dentistry Authors: Avita Rath Priyadarshini H Ramamurthy Bennete Aloysius Fernandes Preena Sidhu Source Type: research
Alternaria toxins in South African sunflower seeds: cooperative study
AbstractSunflower seed samples (N = 80) from different sunflower cultivars originating from different localities in South Africa were analyzed for 15 toxins produced by fungi of the genusAlternaria by means of a simple one-step extraction dilute-and-shoot HPLC-MS/MS approach. References for valine-tenuazonic acid (Val-TeA), altenusin (ALTS), and altenuisol (ALTSOH) were isolated from fungal culture extracts and spectroscopically characterized. Additionally, valine-tenuazonic acid was tested regarding its cytotoxicity in comparison with tenuazonic acid (TeA) and showed less activity on HT-29 cells. Furthermore, alternario...
Source: Mycotoxin Research - July 28, 2017 Category: Toxicology Source Type: research
Two proteins for the price of one: Structural studies of the dual-destiny protein preproalbumin with sunflower trypsin inhibitor-1 [Plant Biology]
Seed storage proteins are both an important source of nutrition for humans and essential for seedling establishment. Interestingly, unusual napin-type 2S seed storage albumin precursors in sunflowers contain a sequence that is released as a macrocyclic peptide during post-translational processing. The mechanism by which such peptides emerge from linear precursor proteins has received increased attention; however, the structural characterization of intact precursor proteins has been limited. Here, we report the 3D NMR structure of the Helianthus annuus PawS1 (preproalbumin with sunflower trypsin inhibitor-1) and provide new...
Source: Journal of Biological Chemistry - July 28, 2017 Category: Chemistry Authors: Bastian Franke, Amy M. James, Mehdi Mobli, Michelle L. Colgrave, Joshua S. Mylne, K. Johan Rosengren Tags: Protein Structure and Folding Source Type: research
