scholarly journals Effect of rice variety and blending proportion on the proximate compositions, minerals and phytic acid contents of bread from rice-teff blend

F1000Research ◽  
2015 ◽  
Vol 4 ◽  
pp. 116
Author(s):  
Sintayehu Legesse ◽  
Solomon Worku ◽  
Geremew Bultosa
Keyword(s):  
Phytic Acid ◽  
Rice Variety ◽  
Chemical Properties ◽  
Zinc Content ◽  
Eragrostis Tef ◽  
Rice Grain ◽  
Potential Health ◽  
Phytic Acid Content ◽  
Custom Design ◽  
Optimal Value

Development of bakery products containing rice (Oryza sativa, Linn.) and teff (Eragrostis tef) could have potential health benefits due to their gluten free nature. Nine experimental runs were generated using custom design by JMP 8 software. The effect of two factors, rice variety (Edeget, X-jigna and Nerica-4) and blending proportions of rice and teff (0.5:0.5, 0.7:0.3 and 0.9:0.1) were studied. The data analysis was conducted using SAS software package for the mean comparison and custom design by JMP 8 software. Response surface methodology was applied to study the interaction effect of the main factors and to generate the predictive equations. An optimal value (1.60%) of fiber was obtained when the proportion of the blend was 50% Edeget and 50% teff because teff grain is high in fiber. A maximum value (10.75%) of protein was obtained when the proportion of the blend was 70% Nerica-4 and 30% teff. Carbohydrate was optimal (81.37%) when 90% Edeget and 10% teff were blended because rice grain is high in carbohydrate. Optimal iron content (12.97 mg/100g) was obtained when the proportion of the blend was 50% Nerica-4 and 50% teff because teff grain is high in iron. Optimal zinc content (4.14 mg/100g) was obtained when the proportion of the blend was 50% X-jigna and 50% teff. The optimal value (61.25 mg/100g) of calcium was obtained when the proportion of the blend was 50% Edeget and 50% teff.  Optimum (lower) value (0.31mg/g) of phytic acid was obtained when the proportion of the blend was 90% Nerica-4 and 10% teff because rice grain is lower in phytic acid content. It was concluded that rice variety and rice-teff blending proportion had a significant effect on the physico-chemical properties of rice-teff blend bread. An optimal nutrient blend (high in nutrients, low in anti-nutrients) was obtained when 70% Edeget rice variety was blended with 30% teff. All the derived mathematical models for the various responses were found to fit significantly to the predicted data.

scholarly journals Mutation of Inositol 1,3,4-trisphosphate 5/6-kinase6 Impairs Plant Growth and Phytic Acid Synthesis in Rice

Plants ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 114 ◽  
Author(s):  
Meng Jiang ◽  
Yang Liu ◽  
Yanhua Liu ◽  
Yuanyuan Tan ◽  
Jianzhong Huang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Phytic Acid ◽  
Targeted Mutagenesis ◽  
Rice Grain ◽  
Nucleotide Substitutions ◽  
Phytic Acid Content ◽  
Frameshift Mutations ◽  
A Genome ◽  
Mutant Lines ◽  
Growth And Reproduction

Inositol 1,3,4-trisphosphate 5/6-kinase (ITPK) is encoded by six genes in rice (OsITPK1-6). A previous study had shown that nucleotide substitutions of OsITPK6 could significantly lower the phytic acid content in rice grains. In the present study, the possibility of establishing a genome editing-based method for breeding low-phytic acid cultivars in rice was explored, in conjunction with the functional determination of OsITPK6. Four OsITPK6 mutant lines were generated by targeted mutagenesis of the gene’s first exon using the CRISPR/Cas9 method, one (ositpk6_1) with a 6-bp in-frame deletion, and other three with frameshift mutations (ositpk6_2, _3, and _4). The frameshift mutations severely impaired plant growth and reproduction, while the effect of ositpk6_1 was relatively limited. The mutant lines ositpk6_1 and _2 had significantly lower levels (−10.1% and −32.1%) of phytic acid and higher levels (4.12- and 5.18-fold) of inorganic phosphorus compared with the wild-type (WT) line. The line ositpk6_1 also showed less tolerance to osmotic stresses. Our research demonstrates that mutations of OsITPK6, while effectively reducing phytic acid biosynthesis in rice grain, could significantly impair plant growth and reproduction.

scholarly journals Genotypic Differences in the Effect of P Fertilization on Phytic Acid Content in Rice Grain

Plants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 146 ◽  
Author(s):  
Ayaka Fukushima ◽  
Ishara Perera ◽  
Koki Hosoya ◽  
Tatsuki Akabane ◽  
Naoki Hirotsu
Keyword(s):  
Gene Expression ◽  
Phytic Acid ◽  
Xylem Sap ◽  
Genotypic Difference ◽  
Genotypic Differences ◽  
Rice Grain ◽  
P Fertilization ◽  
Phytic Acid Content ◽  
Inorganic P ◽  
P Content

Phytic acid (PA) prevents the absorption of minerals in the human intestine, and it is regarded as an antinutrient. Low PA rice is beneficial because of its higher Zn bioavailability and it is suggested that the gene expression level of myo-inositol 3-phosphate synthase 1 (INO1) in developing grain is a key factor to explain the genotypic difference in PA accumulation among natural variants of rice. P fertilization is also considered to affect the PA content, but it is not clear how it affects INO1 gene expression and the PA content in different genotypes. Here, we investigated the effect of P fertilization on the PA content in two contrasting rice genotypes, with low and high PA accumulation, respectively. Based on the results of the analysis of the PA content, inorganic P content, INO1 gene expression, and xylem sap inorganic P content, we concluded that the effect of P fertilization on PA accumulation in grain differed with the genotype, and it was regulated by multiple mechanisms.

scholarly journals Combination of High Zn Density and Low Phytic Acid for Improving Zn Bioavailability in Rice (Oryza stavia L.) Grain

Rice ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Yin Wang ◽  
Yusha Meng ◽  
Yanping Ma ◽  
Lei Liu ◽  
Dianxing Wu ◽  
...  
Keyword(s):  
Phytic Acid ◽  
Double Mutant ◽  
Cell Model ◽  
Brown Rice ◽  
Molar Ratio ◽  
Zn Deficiency ◽  
Rice Grain ◽  
Phytic Acid Content ◽  
Low Phytic Acid ◽  
Zn Bioavailability

Abstract Background Zn deficiency is one of the leading public health problems in the world. Staple food crop, such as rice, cannot provide enough Zn to meet the daily dietary requirement because Zn in grain would chelate with phytic acid, which resulted in low Zn bioavailability. Breeding new rice varieties with high Zn bioavailability will be an effective, economic and sustainable strategy to alleviate human Zn deficiency. Results The high Zn density mutant LLZ was crossed with the low phytic acid mutant Os-lpa-XS110–1, and the contents of Zn and phytic acid in the brown rice were determined for the resulting progenies grown at different sites. Among the hybrid progenies, the double mutant always displayed significantly higher Zn content and lower phytic acid content in grain, leading to the lowest molar ratio of phytic acid to Zn under all environments. As assessed by in vitro digestion/Caco-2 cell model, the double mutant contained the relatively high content of bioavailable Zn in brown rice. Conclusions Our findings suggested pyramiding breeding by a combination of high Zn density and low phytic acid is a practical and useful approach to improve Zn bioavailability in rice grain.

scholarly journals Effect of gibberellins and ascorbic acid treatment on phytic acid and micronutrients dialyzability in germinated biofortified wheat seeds

2021 ◽  
Vol 33 (1) ◽  
pp. 123-129
Author(s):  
Meena Verma ◽  
Roop Singh Bora ◽  
Imran Sheikh ◽  
Vinod Kumar ◽  
Punesh Sangwan ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Phytic Acid ◽  
Wheat Flour ◽  
Acid Content ◽  
Zinc Content ◽  
Human Beings ◽  
Phytic Acid Content ◽  
Fe Content ◽  
Iron And Zinc ◽  
Acid Chelate

Introduction: Phytic acid chelate minerals, including Fe and Zn and render them inaccessible once ingested by human beings. The evaluation of differences in the dialyzability of macronutrients including Fe and Zn in various wheat derivatives is therefore important for the enhancement of nutritional quality of grains. Objectives: The objective of current study was to improve the micronutrient content in wheat grain. Methods: During germination (12, 24, 48, 72, 96 h), effects of gibberellins and ascorbic acid on phytic acid content as well as dialyzability of iron and zinc of wheat derivatives were determined. Results: The phytic acid content in wheat flour was determined and it was found 7.61 to 7.48 mg/g. After the treatment with gibberellins, it was significantly reduced from 8.68 to 21.6 % and 9.65 to 20.9 % with ascorbic acid. In wheat flour dialyzabilty of Fe was 4.53 to 8.97 mg/kg. After germination, Fe content was increased from 9.77 to 32.0 % with gibberellin, and 13.9 to 31.0 % with ascorbic acid. Moreover, with gibberellins, Zn content was increased from 8.68 to 21.6 % and 9.65 to 20.9 % with ascorbic acid, respectively. Conclusion: These results suggested that gibberellins as well as ascorbic acid can be exploited to improve the dialyzability of iron and zinc content due to reduced antinutrient i. e phytic acid and make the minerals available for the absorption in monogastric animals including human beings.

The influence of traditional stir-frying with oil on acceptability, antioxidant activities, nutrients, and the phytic acid content of fermented soybean (tempeh)

2016 ◽  
Vol 46 (2) ◽  
pp. 259-271 ◽  
Author(s):  
Budhi Setiawan ◽  
Sandeep Kumar Thamtam ◽  
Ignasius Radix AP Jati ◽  
Ratna Chrismiari Purwestri ◽  
Donatus Nohr ◽  
...  
Keyword(s):  
Phytic Acid ◽  
Antioxidant Activities ◽  
Chemical Properties ◽  
Total Phenolic ◽  
Cooking Methods ◽  
Thiobarbituric Acid Reactive Substance ◽  
Phytic Acid Content ◽  
Antioxidant Power ◽  
Content Type ◽  
Soy Foods

Purpose – The purpose of this paper was to investigate the acceptability of processed tempeh and the effect of stir-frying on uncooked tempeh composition, total phenolic content (TPC), antioxidant (AO) activities and the phytic acid (PA) concentration. Design/methodology/approach – Fermentation was performed in the solid-state using soybean (Glycine max) inoculated with Rhizopus oligosporus. The acceptability of tempeh was evaluated by administering a questionnaire. The TPC of uncooked and stir-fried tempeh was examined using Folin-Ciocalteu’s method, and PA was analyzed by high-performance liquid chromatography. AO activities were measured by the thiobarbituric acid reactive substance (TBARS) and ferric ion reducing/antioxidant power methods. The stir-fried tempeh was more acceptable than other preparations to the panelists. Findings – In comparison with the uncooked tempeh, stir-fried tempeh showed higher fat composition, in addition to decreased levels of minerals, PA and TBARS. Originality/value – Soy foods are an important source of protein. However, conventional cooking methods could change the chemical properties in soy foods. To avoid additional oil that adds calories, consumers might opt for other cooking methods, such as steaming.

scholarly journals Caracterización nutricional y determinación de ácido fítico como factor antinutricional del frijol caupí

2018 ◽  
Vol 29 (1) ◽  
pp. 29 ◽  
Author(s):  
Claudia Denise De-Paula ◽  
Sara Jarma-Arroyo ◽  
Hermes Aramendiz-Tatis
Keyword(s):  
Protein Content ◽  
Phytic Acid ◽  
Acid Content ◽  
Phosphorus Content ◽  
Organic Phosphorus ◽  
Control Sample ◽  
Zinc Content ◽  
Calorie Intake ◽  
Improvement Program ◽  
Phytic Acid Content

In Cordoba, Monteria, Colombia, poverty reaches 67.8% of the population, with a generalized food under consumption in the region, and it is estimated that on average, the daily calorie intake is lower than an 18.7%, so, it is necessary to know the qualitative characteristics and the anti-nutritional factors of regional raw materials. The objective of this study was to nutritionally characterize 43 genotypes of cowpea beans and to quantify the phytic acid of the best cultivars based on the study of organic phosphorus content on the samples, assuming that one molecule of this acid contains six molecules of phosphorus, in relation to the protein content and minerals. The genotypes that were used came from Córdoba’s University Genetic Improvement Program; the investigation was developed between 2012 to 2014. The Criollo Córdoba bean sample, which was used as a control, had the highest value in phytic acid content of (12.267 ± 2.15 mg/g) and the cultivar L042 had the lowest phytic acid content (9.630 ± 1.725 mg/g). ), which indicates an improvement in the bioavailability of minerals. The protein content had a range between 22.05% ± 0.82 to 26.90% ± 1.76, and the lines L047, L042, L026, L029, L019 and L002 showed a higher content. The iron amount varied between 59.54% ± 24 and 77-177.90% ± 122.20, excelling in the cultivars L042, L020, L001, L005, L057 and L047, which exceeded the control sample. The tested genotypes showed significant differences (p≤0.05) in phosphorus content and values ranged from 4.64 ± 0.43 to 5.69% ± 0.38%; no cultivar surpassed the control sample. In zinc content, cultivars showed no significant differences (p≥0.05), and ranged between 43.46% ± 4.75 and 10.81 ± 53.38%. L042 cultivar was the best in nutritional and lower phytic acid content as antinutritional substance required to replace the currently consumed varieties of cowpea beans.

scholarly journals Physical and chemical properties of rice grain of variety Rapan at different seeding rates and does of nitrogen fertilizers

2021 ◽  
Vol 285 ◽  
pp. 02037
Author(s):  
Elina Papulova ◽  
Svetlana Chizhikova ◽  
Knarik Olkhovaya ◽  
Natalia Tumanyan
Keyword(s):  
Active Ingredient ◽  
Rice Variety ◽  
Chemical Properties ◽  
Nitrogen Fertilizers ◽  
Rice Grain ◽  
Physical And Chemical Properties ◽  
Opposite Pattern ◽  
Viable Seeds ◽  
Physical And Chemical ◽  
And Chemical Properties

The paper presents the results of evaluating the rice variety Rapan grown in 2018, 2019 at different seeding rates and doses of nitrogen fertilizers, according to the main amylographic characteristics of starch dispersion and fracturing. In 2018 and 2019, when growing variety Rapan with seeding rates of 4, 6 and 8 million viable seeds, the highest values were noted for the “fracturing” trait at a nitrogen dose of 92 kg/ha of active ingredient. In 2018, they amounted to 31, 35 and 41%, respectively, in 2019 - 13, 12 and 12%, respectively. The following tendency in the change of rice quality traits was noted: in the samples grown without the use of nitrogen, low fracturing was revealed, while in the N92 variants the value of the trait was maximum, with N184 - the minimum. Indicators for the “maximum viscosity” at a nitrogen dose of 92 kg / ha of active ingredient had the lowest values at all three seeding rates and amounted to 484, 500 and 485 Br.units in 2018, respectively. In 2019 - 471, 440 and 480 Br. units. The opposite pattern was observed when determining the viscosity indices: at the minimum values of fracturing, the viscosity indices were maximum and decreased at high values of this trait.

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