Effect of Processing on Phytic Phosphorus Content in Maize

2016 ◽  
Vol 53 (1) ◽  
pp. 99
Author(s):  
Suneeta Pant ◽  
Arvind Kumar ◽  
Ravindra Kumar ◽  
Manoj Singh
Keyword(s):  
Heat Treatment ◽  
Phytic Acid ◽  
Phosphorus Content ◽  
Primary Source ◽  
Lime Treatment ◽  
Analytical Comparison ◽  
Total Reduction ◽  
Maize Varieties ◽  
Staple Crop ◽  
Phytic Phosphorus

The main objective of this study was to determine the effect of processing on phytic phosphorus content in maize. An analytical comparison of effect of different methods of processing for reducing phytic phosphorus was carried out on maize. The maize is a staple crop and many rely on it as a primary source of nutrition. Though phytic phosphorus content makes minerals unavailable for absorption yet is used by majority of population. Six cultivars of maize namely VL-16, VL-41, VL-42, D741, D823 and D771 were processed to observe the reduction in phytic phosphorus content. Phytic phosphorus content of the different maize varieties ranged from 143.5 to 167.9 mg/100 g. Variety VL 41 showed highest phytic phosphorus content of 167.9 mg/100 g. Lime treatment was observed to cause significant reduction in phytic acid. Boiling and lime treatment reduced phytic phosphorus by 24.84 and 33.60 % respectively. Variety D771 of maize showed highest reduction of 108.9 mg/100 g after heat treatment and 89.8 mg/100 g after lime treatment. The total reduction in phytic phosphorus was 33.60%.

scholarly journals Effect of pH on the characteristics of electroless Ni-P coatings

2017 ◽  
Vol 53 (3) ◽  
pp. 327-332 ◽  
Author(s):  
M. Czagany ◽  
P. Baumli
Keyword(s):  
Heat Treatment ◽  
Surface Morphology ◽  
Coating Thickness ◽  
Phase Structure ◽  
Phosphorus Content ◽  
Effect Of Ph ◽  
Alkaline Bath ◽  
Steel Substrates ◽  
Electroless Ni ◽  
Thick Coatings

In this study electroless Ni-P coatings were deposited on W302 steel substrates. The effects of bath pH and heat treatment at 400?C were investigated on the surface morphology, phase structure, phosphorus content, thickness and microhardness of the coatings. It was observed that both the phosphorus content and coating thickness are dependent on the bath pH. In an acidic/neutral bath, low and medium phosphorus coatings with thickness of 13.9-19.8 ?m were synthesized, while in an alkaline bath, high phosphorus, 4.8-5.8 ?m-thick coatings were formed. Coatings containing medium or high P seemed to be amorphous, while low P coatings had microcrystalline structures. Hardness was also dependent on the composition of the coating. After heat treatment, the structure of the coatings transformed into crystalline Ni with the precipitation of Ni3P phases, which resulted further increases in hardness.

scholarly journals lpa1-5525: A New lpa1 Mutant Isolated in a Mutagenized Population by a Novel Non-Disrupting Screening Method

Plants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 209 ◽  
Author(s):  
Giulia Borlini ◽  
Cesare Rovera ◽  
Michela Landoni ◽  
Elena Cassani ◽  
Roberto Pilu
Keyword(s):  
Phytic Acid ◽  
Screening Method ◽  
Lower Amount ◽  
Wild Type ◽  
New Mutation ◽  
Breeding Programs ◽  
Low Phytic Acid ◽  
Protein Storage Vacuoles ◽  
Mixed Salts ◽  
Phytic Phosphorus

Phytic acid, or myo-inositol 1,2,3,4,5,6-hexakisphosphate, is the main storage form of phosphorus in plants. It is localized in seeds, deposited as mixed salts of mineral cations in protein storage vacuoles; during germination, it is hydrolyzed by phytases to make available P together with all the other cations needed for seed germination. When seeds are used as food or feed, phytic acid and the bound cations are poorly bioavailable for human and monogastric livestock due to their lack of phytase activity. Therefore, reducing the amount of phytic acid is one strategy in breeding programs aimed to improve the nutritional properties of major crops. In this work, we present data on the isolation of a new maize (Zea mays L.) low phytic acid 1 (lpa1) mutant allele obtained by transposon tagging mutagenesis with the Ac element. We describe the generation of the mutagenized population and the screening to isolate new lpa1 mutants. In particular, we developed a fast, cheap and non-disrupting screening method based on the different density of lpa1 seed compared to the wild type. This assay allowed the isolation of the lpa1-5525 mutant characterized by a new mutation in the lpa1 locus associated with a lower amount of phytic phosphorus in the seeds in comparison with the wild type.

Biological protein quality and phytic acid content of domesticallyprocessed kidney beans (Phaseolus Vulgaris)

2016 ◽  
Vol 35 (4) ◽  
Author(s):  
Rajni Modgil ◽  
K. Mankotia ◽  
Ranjana Verma ◽  
Anupama Sandal
Keyword(s):  
Phaseolus Vulgaris ◽  
Phytic Acid ◽  
Phosphorus Content ◽  
Protein Quality ◽  
Protein Digestibility ◽  
Efficiency Ratio ◽  
Phytate Phosphorus ◽  
Kidney Beans ◽  
Net Protein

Effect of domestic processing techniques i.e. soaking, sprouting and cooking was seen on the anti nutrient constituents of kidney beans (Phaseolus vulgaris). Biological protein quality of sprouted and cooked grains was also estimated. Anti nutrient analyzed was phytic acid. Phytate phosphorus and non phytate phosphorus content was also estimated. Rats were fed on domestically processed kidney beans for estimation of protein efficiency ratio(PER), food efficiency ratio(FER) ,apparent protein digestibility(APD), true protein digestibility(TPD), Biological value(BV), net protein utilization(NPU) and net protein retention (NPR). Cooking of kidney beans resulted in a significant decrease in phytic acid and phytate phosphorus content as compared to sprouting. Sprouting and cooking resulted in an increase in FER and PER. Cooking resulted in an increase in biological protein quality of kidney beans. Domestically processed kidney beans have better biological protein quality.

Zooplankton Community Structure in Hardwater Hypertrophic Lakes of Alberta

1993 ◽  
Vol 27 (7-8) ◽  
pp. 353-361 ◽  
Author(s):  
B. Pinel-Alloul
Keyword(s):  
Phosphorus Content ◽  
Size Structure ◽  
Zooplankton Community ◽  
Zooplankton Biomass ◽  
Western Canada ◽  
Zooplankton Abundance ◽  
Lime Treatment ◽  
Eutrophic Lakes ◽  
Size Spectra ◽  
Zooplankton Community Structure

Excessive concentrations of phosphorus are a common feature of hardwater eutrophic lakes in western Canada. Preliminary experimental lime treatment showed that this approach had a great potential to reduce phosphorus content and algal biomass. Therefore, two pairs of experimental and reference lakes were selected for a whole lake lime treatment and monitored for a full year prior to manipulation. This study presents the composition and size structure of the Zooplankton community of the lakes before treatment in order to assess the natural summer and inter-lake variations. Before lime treatment, seasonal means of total Zooplankton abundance and biomass ranged from 17 ± 8 to 127 ± 84 ind. L−1 and from 4 ± 2 to 138 ± 236 mg m−3, respectively. The two experimental lakes (Halftnoon and Lofty) were the richest in Zooplankton while the references lakes (Crooked and Jenkins) were the poorest. A total of 30 Zooplankton species (17 rotifers, 2 calanoids, 4 cyclopoids and 7 cladocerans) were recorded as well as 3 chaoborid species. The composition and size structure of Zooplankton varied between lakes and dates. Rotifers accounted for the majority of Zooplankton abundances (59-91%) while Cladocera (78-99%) or Copepoda (74%) in Crooked lake formed most of the Zooplankton biomass. Summer variations of the Zooplankton groups were described along with changes in size spectra. The temporal variation and the inter-lake differences in Zooplankton structure were discussed in relation to trophy, fish and invertebrate predation, and cyanophyte interactions.

The Effect of Heat Treatment on the Microstructure of Electroless Ni–P Coatings

2011 ◽  
Vol 464 ◽  
pp. 474-477
Author(s):  
Yan Hai Cheng ◽  
Zhen Cai Zhu ◽  
Zheng Tong Han
Keyword(s):  
Heat Treatment ◽  
Electroless Plating ◽  
Heat Treatment Temperature ◽  
Theoretical Basis ◽  
Phosphorus Content ◽  
Treatment Temperature ◽  
X Ray ◽  
Wear And Corrosion ◽  
Electroless Ni ◽  
The Relationship

In the paper, different phosphorus content Ni-P coatings was prepared by electroless plating. The microstructural changes of electroless Ni-P coatings on both as-deposited condition and heat treatment were investigated by X-ray diffractometry (XRD). The relationship between microstructure of Ni-P coatings and phosphorus content and heat treatment temperature were discussed. This conclusion provided a good theoretical basis for Ni-P coating using for wear and corrosion resistances in the technology of MEMS.

Effect of Heat Treatment on Hardness of Electroless Ni-P Plating

2011 ◽  
Vol 228-229 ◽  
pp. 878-882
Author(s):  
Guan Jun Liu ◽  
Xin Hua Mao ◽  
Jun Cao ◽  
Zhou Yu
Keyword(s):  
Heat Treatment ◽  
Heat Treatment Temperature ◽  
Phosphorus Content ◽  
Treatment Time ◽  
Design Method ◽  
Uniform Design ◽  
Heat Treatment Condition ◽  
Treatment Temperature ◽  
Heat Treatment Time ◽  
Alloy Plating

Hardness of electronless Ni-P alloy plating which have five different phosphorus content were investigated with HX-1000 type microscopic Vickers hardness tester, respectively. Phosphorus content of Ni-P platings were investigated by Quanta 200 type scanning electron microscope and Oxford Energy Disperse Spectroscopy Heat treatment temperature and time of the different platings were optimized and analysed by Uniform Design method, respectively. The results show that correlation consist between maximum hardness of the Ni-P alloy plating and heat treatment temperature, not heat treatment time under the experimental condition which the heat treatment time is between one hour and five hours, and maximal value of the plating hardness appears when the heat treatment temperature is 400-430 Celsius degree. Maximal hardness value of the electronless Ni-P alloy plating increases with increase of their phosphorus content under heat treatment condition.

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