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phytic acid

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https://www.readbyqxmd.com/read/27886388/phytate-calcium-molar-ratio-does-not-predict-accessibility-of-calcium-in-ready-to-eat-dishes
#1
Daniela Erba, Federica Manini, Erika Meroni, Maria C Casiraghi
BACKGROUND: Phytic acid (PA), a naturally occurring compound of plant food, is generally considered to affect mineral bioavailability. The aim of this study was to investigate the reliability of the PA/calcium molar ratio as a predictive factor of calcium accessibility in composed dishes and their ingredients. RESULTS: We chose dishes whose ingredients were rich in Ca (milk or cheese) or in PA (whole-wheat cereals) in order to consider a range of PA/Ca ratios (from 0 to 2...
November 25, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27882890/determination-of-conditional-stability-constants-for-phytic-acid-complexes-with-mg-2-ca-2-and-zn-2-ions-using-electrospray-ionization-mass-spectrometry
#2
Michał Cegłowski, Patrycja Balcerzak, Rafał Frański, Grzegorz Schroeder
The electrospray ionization mass spectrometry competitive method has been used for the determination of the conditional stability constants of phytic acid complexes with Mg(2+), Ca(2+) and Zn(2+) ions. The competing complexation between ethylenediaminetetraacetic acid (EDTA) and phytic acid was studied. For EDTA complexes with Mg(2+), Ca(2+) and Zn(2+) ions, the values of the conditional stability constants are known and were used for the calculation of this constant for the phytic acid complexes. The values obtained are in agreement with the literature data...
2016: European Journal of Mass Spectrometry
https://www.readbyqxmd.com/read/27846987/synthesis-of-a-novel-electrode-material-containing-phytic-acid-polyaniline-nanofibers-for-simultaneous-determination-of-cadmium-and-lead-ions
#3
Hui Huang, Wencai Zhu, Xiaochun Gao, Xiuyu Liu, Houyi Ma
The development of nanostructured conducting polymers based materials for electrochemical applications has attracted intense attention due to their environmental stability, unique reversible redox properties, abundant electron active sites, rapid electron transfer and tunable conductivity. Here, a phytic acid doped polyaniline nanofibers based nanocomposite was synthesized using a simple and green method, the properties of the resulting nanomaterial was characterized by electrochemical impedance spectroscopy (EIS), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS)...
December 1, 2016: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27843756/proximate-composition-and-fatty-acid-analysis-of-lablab-purpureus-l-legume-seed-implicates-to-both-protein-and-essential-fatty-acid-supplementation
#4
Shahdat Hossain, Rashed Ahmed, Sujan Bhowmick, Abdullah Al Mamun, Michio Hashimoto
The high mortality rate in Bangladesh is related to poverty, which results in protein malnutrition, essential fatty acid deficiency and lacks in adequate vitamins, minerals and calorie. Exploring new food items with improved dietary nutrition factors may, therefore, help to decrease the mortality rate in the poor countries like Bangladesh. Accordingly, the present study was a proximate composition and fatty acid analysis of L. purpureus seed-a legume seed which is given no careful attention locally, though it might be a good source of valuable nutrition factors for both animals and humans...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27797511/highly-active-and-stable-catalysts-of-phytic-acid-derivative-transition-metal-phosphides-for-full-water-splitting
#5
Gong Zhang, Guichang Wang, Yang Liu, Huijuan Liu, Jiuhui Qu, Jinghong Li
Application of transition metal phosphide (TMP) catalysts for full water splitting has great potential to help relieve the energy crisis. Various methods have been investigated to obtain high catalytic activity, but the use of electronic structure regulation by incorporation of different elements is of particular simplicity and significance for development of a universal TMP synthesis method. We herein describe a novel approach for fabricating a series of TMPs by pyrolyzing phytic acid (PA) cross-linked metal complexes...
October 31, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27796873/phytase-production-and-development-of-an-ideal-dephytinization-process-for-amelioration-of-food-nutrition-using-microbial-phytases
#6
Jinender Jain, Bijender Singh
Development of an ideal process for reduction of food phytates using microbial phytases is a demanding task by all food and feed industries all over the world. Phytase production by Bacillus subtilis subsp. subtilis JJBS250 isolated from soil sample was optimized in submerged fermentation using statistical tools. Among all the culture variables tested, sucrose, sodium phytate and Tween-80 were identified as the most significant variables using the Placket-Burman design. Further optimization of these variables resulted in a 6...
October 29, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27779388/look-insight-health-risks-and-benefits-of-chickpea-cicer-arietinum-consumption
#7
Rinkesh Kumar Gupta, Kriti Gupta, Akanksha Sharma, Mukul Das, Irfan Ahmad Ansari, Premendra D Dwivedi
Chickpeas (CPs) are one of the most commonly consumed legumes especially in the Mediterranean area as well as in the western world. Being one of the most nutritional elements of the human diet, CP toxicity and allergy have raised health concern. CP may contain various anti-nutritional compounds, including protease inhibitors, phytic acid, lectins, oligosaccharides and some phenolic compounds that may impair the utilization of the nutrients by people. Also, high consumption rate of CPs have enhanced the allergic problems in sensitive individuals as it contains many allergens...
October 25, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27777071/effect-of-phytic-acid-etchant-on-resin-dentin-bonding-monomer-penetration-and-stability-of-dentin-collagen
#8
Kalyan Kong, Noriko Hiraishi, Mohannad Nassar, Masayuki Otsuki, Cynthia K Y Yiu, Junji Tagami
PURPOSE: Phytic acid (IP6) works well as an etchant in dentin bonding to remove the smear layer due to its acidity and chelating effect. This study compared the etching effect of IP6 with phosphoric acid (PA) and ethylenediaminetetraacetic acid (EDTA) on resin-dentin bond strength, micromorphology of the etched dentin surface and nanoleakage formation along resin-dentin interfaces and compared the protecting effect against collagen degradation. METHODS: Dentin disks and flat dentin surfaces were obtained from extracted human teeth...
October 21, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27765968/effect-of-popping-and-fermentation-on-proximate-composition-minerals-and-absorption-inhibitors-and-mineral-bioavailability-of-amaranthus-caudatus-grain-cultivated-in-ethiopia
#9
Endale Amare, Claire Mouquet-Rivier, Isabelle Rochette, Abdulaziz Adish, Gulelat D Haki
This study evaluated the effect of popping and fermentation on the chemical composition of three types of Amaranthus caudatus grains cultivated in Ethiopia. Proximate composition, minerals and mineral absorption inhibitors were analyzed. Popping caused a decrease in protein content by 4 % and an increase in fat, ash, acid detergent fiber (ADF) and neutral detergent fiber (NDF) contents by 12, 10, 15 and 67 %, respectively. While fermentation increased protein, fat and ash content by 3, 22 and 14 %, respectively but did not significantly change ADF and NDF content...
July 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27765248/desalted-duck-egg-white-peptides-promote-calcium-uptake-by-counteracting-the-adverse-effects-of-phytic-acid
#10
Tao Hou, Weiwei Liu, Wen Shi, Zhili Ma, Hui He
The structure of the desalted duck egg white peptides-calcium chelate was characterized by fluorescence spectroscopy, fourier transform infrared spectroscopy, and dynamic light scattering. Characterization results showed structural folding and aggregation of amino acids or oligopeptides during the chelation process. Desalted duck egg white peptides enhanced the calcium uptake in the presence of oxalate, phosphate and zinc ions in Caco-2 monolayers. Animal model indicated that desalted duck egg white peptides effectively enhanced the mineral absorption and counteracted the deleterious effects of phytic acid...
March 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27759065/effect-of-phytase-on-zinc-absorption-from-a-millet-based-porridge-fed-to-young-burkinabe-children
#11
M Brnić, R F Hurrell, L T Songré-Ouattara, B Diawara, A Kalmogho-Zan, C Tapsoba, C Zeder, R Wegmüller
BACKGROUND/OBJECTIVES: Fortifying cereal staples with zinc is a strategy for increasing zinc intake in young children in developing countries. However, phytic acid (PA) naturally present in cereals strongly decreases zinc absorption. A stable-isotope zinc absorption study was conducted in young children to investigate the ability of the PA-degrading enzyme phytase to improve zinc absorption, when added to a cereal porridge immediately before consumption. SUBJECTS/METHODS: Fractional absorption of zinc (FAZ) was estimated in 35 young healthy Burkinabe children using the double-isotopic tracer ratio method with (67)Zn as oral tracer and (70)Zn as intravenous tracer, in a crossover design...
October 19, 2016: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27754660/polyphosphates-and-fulvates-enhance-environmental-stability-of-po4-bearing-colloidal-iron-oxyhydroxides
#12
Jessica Bollyn, Mathias Nijsen, Stijn Baken, Iris J Joye, Nadia Waegeneers, Geert Cornelis, Erik Smolders
Iron oxyhydroxide nanoparticles (Fe-NPs) are natural vectors of phosphate (PO4) in the environment. Their mobility is determined by colloidal stability, which is affected by surface composition. This might be manipulated in engineered NPs for environmental or agricultural applications. Here, stability of PO4-Fe-NPs (HFO/goethite) was determined across contrasting environmental conditions (pH, Ca) and by using fulvates (FA) and polyphosphates as coatings. The PO4-Fe-NPs are unstable at Ca concentrations above 0...
October 18, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27739088/increase-of-protein-extraction-yield-from-rapeseed-meal-through-a-pretreatment-with-phytase
#13
Ivo M Rodrigues, M Graça Vs Carvalho, Jorge Ms Rocha
BACKGROUND: Rapeseed meal is a good source of high-quality vegetal protein but contains antinutritional compounds that limit its use for human and animal feed. The aim of this study was to develop a methodology to enhance alkaline protein extraction of rapeseed meal and to produce protein-rich products with low levels of phytic acid. Different phytase dosages and operating conditions were used for rapeseed meal pretreatment followed by alkaline extraction at different temperatures, time, pH and solid/liquid ratios (S/L)...
October 14, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27719940/mechanisms-and-kinetics-of-tryptophan-n-nitrosation-in-a-gastro-intestinal-model
#14
Diane de La Pomélie, Véronique Santé-Lhoutellier, Philippe Gatellier
The reaction of nitrite with different amino acids containing secondary amino groups was tested under simulated in-vitro conditions of the digestive tract. After treatment, tryptophan was the only amino acid that exhibited specific UV absorbance of nitrosamines at 335nm, supporting the assumption that it is the main source of endogenous nitrosamines. The combined effect of pH (from 2 to 6.5) and nitrite (from 0.1 to 20mM) was analyzed and the mechanisms and kinetic laws of tryptophan N-nitrosation were determined...
March 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27719911/itraq-analysis-of-low-phytate-mung-bean-sprouts-treated-with-sodium-citrate-sodium-acetate-and-sodium-tartrate
#15
Xiaolin Jin, Runqiang Yang, Liping Guo, Xinkun Wang, Xiaokun Yan, Zhenxin Gu
The effects of sodium citrate (SC), sodium acetate (SA) and sodium tartrate (ST) spraying on mung bean germination were investigated. Exogenous SC, ST and SA treatments significantly reduced the phytic acid content and increased the antioxidant enzyme activities. In this study, an iTRAQ-based proteomic approach was employed to explore the proteomes of mung bean sprouts, and 81, 101 and 90 differentially expressed proteins were identified in 4-day-old SC-, SA- and ST-treated mung bean sprouts, with 38 proteins present in all samples...
March 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27702498/silk-fibroin-organization-induced-by-chitosan-in-layer-by-layer-films-application-as-a-matrix-in-a-biosensor
#16
Jorge A M Delezuk, Adriana Pavinatto, Marli L Moraes, Flávio M Shimizu, Valquíria C Rodrigues, Sérgio P Campana-Filho, Sidney J L Ribeiro, Osvaldo N Oliveira
In this paper, we show that chitosan may induce conformation changes in silk fibroin (SF) in layer-by-layer (LbL) films, which were used as matrix for immobilization of the enzyme phytase to detect phytic acid. Three chitosan (CH) samples possessing distinct molecular weights were used to build CH/SF LbL films, and a larger change in conformation from random coils to β-sheets for SF was observed for high molecular weight chitosan (CHH). The CHH/SF LbL films deposited onto interdigitated gold electrodes were coated with a layer of phytase, with which phytic acid could be detected down to 10(-9)M using impedance spectroscopy as the principle of detection and treating the data with a multidimensional projection technique...
January 2, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27687031/transgenic-expression-of-phytase-in-wheat-endosperm-increases-bioavailability-of-iron-and-zinc-in-grains
#17
Nabeela Abid, Asia Khatoon, Asma Maqbool, Muhammad Irfan, Aftab Bashir, Irsa Asif, Muhammad Shahid, Asma Saeed, Henrik Brinch-Pedersen, Kauser A Malik
Phytate is a major constituent of wheat seeds and chelates metal ions, thus reducing their bioavailability and so the nutritional value of grains. Transgenic plants expressing heterologous phytase are expected to enhance degradation of phytic acid stored in seeds and are proposed to increase the in vitro bioavailability of mineral nutrients. Wheat transgenic plants expressing Aspergillus japonicus phytase gene (phyA) in wheat endosperm were developed till T3 generation. The transgenic lines exhibited 18-99 % increase in phytase activity and 12-76 % reduction of phytic acid content in seeds...
September 29, 2016: Transgenic Research
https://www.readbyqxmd.com/read/27665015/additive-effects-of-fibroblast-growth-factor-23-neutralization-and-dietary-phytase-on-chick-calcium-and-phosphorus-metabolism
#18
Z Z Ren, D E Bütz, A N Wahhab, A J Piepenburg, M E Cook
Phytase hydrolyzes phytate rendering phosphorus available for intestinal absorption, while systemic neutralization of fibroblast growth factor 23 (FGF-23), using anti-FGF-23 antibody, has been shown to increase phosphate retention. Hence, neutralization of FGF-23 should be additive with phytase in reducing dietary non-phytate phosphorus (nPP) needs in chickens fed plant-based diets rich in phytic acid. This study was designed to test the additive effects of maternally derived anti-FGF-23 antibody and dietary phytase on the performance of chicks fed a low nPP diet from one to 14 d...
September 24, 2016: Poultry Science
https://www.readbyqxmd.com/read/27664604/impact-of-solid-state-fermentation-on-nutritional-physical-and-flavor-properties-of-wheat-bran
#19
Hui-Min Zhao, Xiao-Na Guo, Ke-Xue Zhu
To improve the nutritional, physical and flavor properties of wheat bran, yeast and lactic acid bacteria (LAB) were used for fermenting wheat bran in solid state. Appearance properties, nutritional properties, microstructure, hydration properties and flavor of raw bran and fermented bran were evaluated. After treatments, water extractable arabinoxylans were 3-4 times higher than in raw bran. Total dietary fiber and soluble dietary fiber increased after solid state fermentation. Over 20% of phytic acid was degraded...
February 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27625972/biochemical-effect-of-a-histidine-phosphatase-acid-phytase-of-aspergillus-japonicus-var-saito-on-performance-and-bony-characteristics-of-broiler
#20
Alexandre Maller, Thays Cristina Oliveira de Quadros, Otto M Junqueira, Alfredo Lora Graña, Ana Paula de Lima Montaldi, Ricardo Fernandes Alarcon, João Atílio Jorge, Maria de Lourdes T M Polizeli
Phytases are enzymes that hydrolyze the ester linkage of phytic acid, releasing inositol and inorganic phosphate. The phytic acid (phytate) is a major form of phosphorus in plant foods. Knowing that diet for animal of production has the cereal base (corn and soybean), primarily, broilers need for an alternative to use of the phosphate present in these ingredients, since it does not naturally produce the enzyme phytase, which makes it available. The aims of this work was studding the safe supplementation of Aspergillus japonicus var...
2016: SpringerPlus
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