نتایج جستجو برای: phytate

تعداد نتایج: 1468  

2016
Gangcheng Wu Stuart K. Johnson Janet F. Bornman Sarita J. Bennett Vijaya Singh Azra Simic Zhongxiang Fang Rattan Singh Yadav

BACKGROUND It has been predicted that the global temperature will rise in the future, which means crops including sorghum will likely be grown under higher temperatures, and consequently may affect the nutritional properties. METHODS The effects of two growth temperatures (OT, day/night 32/21°C; HT 38/21°C) on tannin, phytate, mineral, and in vitro iron availability of raw and cooked grains (...

Journal: :Journal of food science 2007
R S Kadan B Q Phillippy

Rice bread is a potential alternative to wheat bread for gluten-sensitive individuals. Incorporation of rice bran into bread made from white rice flour adds flavor but also phytic acid, which can reduce the bioavailability of minerals. Breads with varied amounts of defatted bran and yeast were prepared to determine their effects on the phytate and mineral contents of the bread. A completely ran...

Journal: :The British journal of nutrition 2009
Edward M Onyango Elikplimi K Asem Olayiwola Adeola

The influence of the form of phytic acid on the regulation of mucin and endogenous losses of amino acids, nitrogen and energy in chickens was investigated. Forty-eight 10-week-old male broilers were grouped by weight into eight blocks of six cages with one bird per cage. Birds received by intubation six dextrose-based combinations of phytic acid and phytase arranged in a 3 x 2 factorial consist...

Journal: :Applied and environmental microbiology 2006
Taewan Kim Edward J Mullaney Jesus M Porres Karl R Roneker Sarah Crowe Sarah Rice Taegu Ko Abul H J Ullah Catherine B Daly Ross Welch Xin Gen Lei

Environmental pollution by phosphorus from animal waste is a major problem in agriculture because simple-stomached animals, such as swine, poultry, and fish, cannot digest phosphorus (as phytate) present in plant feeds. To alleviate this problem, a phytase from Aspergillus niger PhyA is widely used as a feed additive to hydrolyze phytate-phosphorus. However, it has the lowest relative activity ...

Journal: :Enzyme and microbial technology 2012
Ahmed Abass Osman Peram Ravindra Babu Kamarthapu Venu Khareedu Venkateswara Rao Vudem Dashavantha Reddy

The present study primarily deals with the identification of substrate-binding site and elucidation of catalytic residue of the phytase from Bacillus sp. (Genbank Accession No. EF536824) employing molecular modeling and site-directed mutagenesis. Homology-based modeling of the Bacillus phytase revealed β-propeller structure with twelve active-site aminoacid residues, viz., D75, R77, Y78, H138, ...

Journal: :Microbiology 2002
Elsorra E Idriss Oliwia Makarewicz Abdelazim Farouk Kristin Rosner Ralf Greiner Helmut Bochow Thomas Richter Rainer Borriss

Several Bacillus strains belonging to the B. subtilis/amyloliquefaciens group isolated from plant-pathogen-infested soil possess plant-growth-promoting activity [Krebs, B. et al. (1998) J Plant Dis Prot 105, 181-197]. Three out of the four strains investigated were identified as B. amyloliquefaciens and were able to degrade extracellular phytate (myo-inositol hexakisphosphate). The highest extr...

2018
Lia R. Valeeva Chuluuntsetseg Nyamsuren Margarita R. Sharipova Eugene V. Shakirov

Phytases are specialized phosphatases capable of releasing inorganic phosphate from myo-inositol hexakisphosphate (phytate), which is highly abundant in many soils. As inorganic phosphorus reserves decrease over time in many agricultural soils, genetic manipulation of plants to enable secretion of potent phytases into the rhizosphere has been proposed as a promising approach to improve plant ph...

Journal: :Plant physiology 2012
Toru Iwai Michiko Takahashi Koshiro Oda Yasuko Terada Kaoru T Yoshida

Phytic acid (inositol hexakisphosphate [InsP(6)]) is the storage compound of phosphorus in seeds. As phytic acid binds strongly to metallic cations, it also acts as a storage compound of metals. To understand the mechanisms underlying metal accumulation and localization in relation to phytic acid storage, we applied synchrotron-based x-ray microfluorescence imaging analysis to characterize the ...

2004
Ursula Konietzny Ralf Greiner R. Greiner

The stepwise release of phosphate from phytate, the major storage form of phosphate in plant seeds and pollen, is initiated by a class of enzymes that have been collectively called phytases. The classification is solely due to the in vitro capability of these enzymes to accept phytate as a substrate. Phytases have been studied intensively in recent years because of the great interest in such en...

Journal: :The Journal of nutrition 2009
Tom D Thacher Oluseyi Aliu Ian J Griffin Sunday D Pam Kimberly O O'Brien Godwin E Imade Steven A Abrams

Nutritional rickets resulting from calcium insufficiency is common in Nigeria and high dietary phytate is thought to inhibit calcium and zinc absorption. We compared the effects of a high-phytate meal and enzymatic dephytinization on calcium and zinc absorption in Nigerian children with and without rickets. Nineteen children with rickets and 15 age-matched control children, aged 2-10 y, were gi...

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