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https://www.readbyqxmd.com/read/28994416/a-high-quality-genome-assembly-of-quinoa-provides-insights-into-the-molecular-basis-of-salt-bladder-based-salinity-tolerance-and-the-exceptional-nutritional-value
#1
Changsong Zou, Aojun Chen, Lihong Xiao, Heike M Muller, Peter Ache, Georg Haberer, Meiling Zhang, Wei Jia, Ping Deng, Ru Huang, Daniel Lang, Feng Li, Dongliang Zhan, Xiangyun Wu, Hui Zhang, Jennifer Bohm, Renyi Liu, Sergey Shabala, Rainer Hedrich, Jian-Kang Zhu, Heng Zhang
Chenopodium quinoa is a halophytic pseudocereal crop that is being cultivated in an ever-growing number of countries. Because quinoa is highly resistant to multiple abiotic stresses and its seed has a better nutritional value than any other major cereals, it is regarded as a future crop to ensure global food security. We generated a high-quality genome draft using an inbred line of the quinoa cultivar Real. The quinoa genome experienced one recent genome duplication about 4.3 million years ago, likely reflecting the genome fusion of two Chenopodium parents, in addition to the γ paleohexaploidization reported for most eudicots...
October 10, 2017: Cell Research
https://www.readbyqxmd.com/read/28958543/effect-of-high-pressure-on-rheological-and-thermal-properties-of-quinoa-and-maize-starches
#2
Guantian Li, Fan Zhu
Quinoa starch has small granules with relatively low gelatinization temperatures and amylose content. High hydrostatic pressure (HHP) is a non-thermal technique for food processing. In this study, effects of HHP up to 600MPa on physical properties of quinoa starch were studied and compared with those of a normal maize starch. Both starches gelatinized at 500 and 600MPa. The pressure of 600MPa completely gelatinized quinoa starch as revealed by thermal analysis. Dynamic rheological analysis showed that HHP improved the gel stability of both starches during cooling...
February 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28946344/bioactive-compounds-and-antioxidant-properties-of-pseudocereals-enriched-water-biscuits-and-their-in-vitro-digestates
#3
Alyssa Hidalgo, Anita Ferraretto, Ivano De Noni, Michela Bottani, Stefano Cattaneo, Simone Galli, Andrea Brandolini
Carotenoids, tocols, phenolic acids and antioxidant capacity were studied during in vitro digestion of water biscuits (WB) from bread wheat, einkorn and einkorn-pseudocereals. Antioxidant and cytotoxic activities of digestates were also measured using a 70% Caco2/30% HT-29 human intestinal co-culture layer. Antioxidant profiles differed among WB formulations. Only hydrophilic molecules were solubilised by gastric digestion. After intestinal digestion, 77% carotenoids and 67% tocols were released. Soluble-conjugated phenolic acids increased (30%) and insoluble-bound forms decreased (17%), suggesting partial conversion from bound to conjugated form...
February 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28943441/a-combined-experimental-and-molecular-simulation-study-of-factors-influencing-interaction-of-quinoa-proteins-carrageenan
#4
Natalia Montellano Duran, Darío Spelzini, Natael Wayllace, Valeria Boeris, Fernando L Barroso da Silva
The interaction between quinoa proteins isolate (QP isolate) and the negatively charged polysaccharide ι-Carragennan (Carr) as a function of pH was studied. Experimental measurements as turbidity, hydrophobic surface, ζ-potential, and hydrodynamic size were carried out. Associative interaction between QP and Carr was found in the pH range between 1 and 2.9. When both molecules are negatively charged (pH>5,5), a pure Coulombic repulsion regime is observed and the self-association of QP due to the Carr exclusion is proposed...
September 21, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28917891/pickering-emulsifiers-based-on-hydrophobically-modified-small-granular-starches-part-i-manufacturing-and-physico-chemical-characterization
#5
A Marefati, B Wiege, N U Haase, M Matos, M Rayner
Small granular starches from rice, quinoa and amaranth were hydrophobized by esterification with octenyl succinic anhydride (OSA) in an aqueous alkaline slurry to obtain series of modified starches at defined intervals (i.e. 0.6, 1.2, 1.8, 2.4, 3.0%). The physical and the physico-chemical properties of the starch particles were characterized by proximate analysis including protein level, amylose level and dry matter. The shape and size of the starch granules were characterized by scanning electron microscopy and light scattering...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28888460/impact-of-boiling-on-free-and-bound-phenolic-profile-and-antioxidant-activity-of-commercial-gluten-free-pasta
#6
Gabriele Rocchetti, Luigi Lucini, Giulia Chiodelli, Gianluca Giuberti, Domenico Montesano, Francesco Masoero, Marco Trevisan
Cooking by boiling dry pasta could have varying degrees of influence on nutritional and functional components. In the present study, its effect on total phenolic content and antioxidant capacity, as well as on the comprehensive profile of free and bound phenolics, was investigated in six commercial gluten-free (GF) pasta products. Overall, the heat treatment caused a significant reduction (P<0.01) of the total phenolic content as well as FRAP reducing power and ORAC radical scavenging, with significant differences among the pasta samples considered...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28888041/supplementation-with-the-methyl-donor-betaine-prevents-congenital-defects-induced-by-prenatal-alcohol-exposure
#7
Ganga Karunamuni, Megan M Sheehan, Yong Qiu Doughman, Shi Gu, Jiayang Sun, Youjun Li, James P Strainic, Andrew M Rollins, Michael W Jenkins, Michiko Watanabe
BACKGROUND: Despite decades of public education about dire consequences of prenatal alcohol exposure (PAE), drinking alcohol during pregnancy remains prevalent. As high as 40% of live-born infants exposed to alcohol during gestation and diagnosed with fetal alcohol syndrome have congenital heart defects that can be life-threatening. In animal models, the methyl donor betaine, found in foods such as wheat bran, quinoa, beets, and spinach, ameliorated neurobehavioral deficits associated with PAE, but effects on heart development are unknown...
September 9, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28870149/development-of-novel-indel-markers-and-genetic-diversity-in-chenopodium-quinoa-through-whole-genome-re-sequencing
#8
Tifu Zhang, Minfeng Gu, Yuhe Liu, Yuanda Lv, Ling Zhou, Haiyan Lu, Shuaiqiang Liang, Huabin Bao, Han Zhao
BACKGROUND: Quinoa (Chenopodium quinoa Willd.) is a balanced nutritional crop, but its breeding improvement has been limited by the lack of information on its genetics and genomics. Therefore, it is necessary to obtain knowledge on genomic variation, population structure, and genetic diversity and to develop novel Insertion/Deletion (InDel) markers for quinoa by whole-genome re-sequencing. RESULTS: We re-sequenced 11 quinoa accessions and obtained a coverage depth between approximately 7× to 23× the quinoa genome...
September 5, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28869289/quinoa-starch-characteristics-and-their-correlations-with-the-texture-profile-analysis-tpa-of-cooked-quinoa
#9
Geyang Wu, Craig F Morris, Kevin M Murphy
Starch characteristics significantly influence the functionality and end-use quality of cereals and pseudo-cereals. This study examined the composition and properties of starch from 11 pure varieties and 2 commercial samples of quinoa in relationship to the texture of cooked quinoa. Nearly all starch properties and characteristics differed among these samples. Results showed that total starch content of seeds ranged from 53.2 to 75.1 g/100 g apparent amylose content ranged from 2.7% to 16.9%; total amylose ranged from 4...
October 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28862281/the-role-of-the-secondary-structure-of-helical-poly-phenylacetylene-s-in-the-formation-of-nanoparticles-from-polymer-metal-complexes-hpmcs
#10
Rafael Rodríguez, Sandra Arias, Emilio Quiñoá, Ricardo Riguera, Félix Freire
The great importance of the secondary structure (compressed/stretched) of helical poly(phenylacetylene)s (PPAs) in the formation of nanostructures (nanospheres and nanotoroids) by complexation with metal ions of diverse valences is demonstrated. PPAs bearing the same chelating units [anilide of (R)-methoxyphenylacetic acid] but displaying different helical scaffolds show great differences in their nanostructuration due to the different secondary structures of their helices despite the analogous ways in which their mono- and divalent metal ions form complexes...
September 1, 2017: Nanoscale
https://www.readbyqxmd.com/read/28831659/digestibility-of-quinoa-chenopodium-quinoa-willd-protein-concentrate-and-its-potential-to-inhibit-lipid-peroxidation-in-the-zebrafish-larvae-model
#11
R Vilcacundo, D Barrio, C Carpio, A García-Ruiz, J Rúales, B Hernández-Ledesma, W Carrillo
Quinoa protein concentrate (QPC) was extracted and digested under in vitro gastrointestinal conditions. The protein content of QPC was in the range between 52.40 and 65.01% depending on the assay used. Quinoa proteins were almost completely hydrolyzed by pepsin at pH of 1.2, 2.0, and 3.2. At high pH, only partial hydrolysis was observed. During the duodenal phase, no intact proteins were visible, indicating their susceptibility to the in vitro simulated digestive conditions. Zebrafish larvae model was used to evaluate the in vivo ability of gastrointestinal digests to inhibit lipid peroxidation...
August 22, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28821022/structure-stabilization-in-starch-quinoa-bran-doughs-the-role-of-water-availability-and-gelatinization
#12
Maike Föste, Mario Jekle, Thomas Becker
Bran is a promising ingredient for nutritional fortification in starch-based dough systems. However its incorporation is a technological challenge favoring a shift in dough functionality. The objective of this study was to elucidate the impact of bran on baking performance independent of dough firmness and start of gelatinization. Therefore, corn starch was replaced by quinoa bran (10% to 50%) and water addition (80-110g/100g flour) was standardized on a fixed complex shear modulus (G*) and start of gelatinization (TOnset) based on a corn starch reference dough...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28804797/bioactivities-of-alternative-protein-sources-and-their-potential-health-benefits
#13
REVIEW
A Pihlanto, P Mattila, S Mäkinen, A-M Pajari
Increasing the utilisation of plant proteins is needed to support the production of protein-rich foods that could replace animal proteins in the human diet so as to reduce the strain that intensive animal husbandry poses to the environment. Lupins, quinoa and hempseed are significant sources of energy, high quality proteins, fibre, vitamins and minerals. In addition, they contain compounds such as polyphenols and bioactive peptides that can increase the nutritional value of these plants. From the nutritional standpoint, the right combination of plant proteins can supply sufficient amounts of essential amino acids for human requirements...
August 14, 2017: Food & Function
https://www.readbyqxmd.com/read/28799759/extraction-of-glucuronoarabinoxylan-from-quinoa-stalks-chenopodium-quinoa-willd-and-evaluation-of-xylooligosaccharides-produced-by-gh10-and-gh11-xylanases
#14
Daniel Martin Salas-Veizaga, Rodrigo Villagomez, Javier A Linares-Pastén, Cristhian Carrasco, María Teresa Álvarez, Patrick Adlercreutz, Eva Nordberg Karlsson
Byproducts from quinoa are not yet well explored sources of hemicellulose or products thereof. In this work, xylan from milled quinoa stalks was retrieved to 66% recovery by akaline extraction using 0.5 M NaOH at 80 °C, followed by ethanol precipitation. The isolated polymer eluted as a single peak in size-exclusion chromatography with a molecular weight of >700 kDa. Analysis by Fourier transform infrared spectroscopy and nuclear magnetic resonance (NMR) combined with acid hydrolysis to monomers showed that the polymer was built of a backbone of β(1 → 4)-linked xylose residues that were substituted by 4-O-methylglucuronic acids, arabinose, and galactose in an approximate molar ratio of 114:23:5:1...
September 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28771638/characterization-of-the-genome-of-a-phylogenetically-distinct-tospovirus-and-its-interactions-with-the-local-lesion-induced-host-chenopodium-quinoa-by-whole-transcriptome-analyses
#15
Wan-Chen Chou, Shih-Shun Lin, Shyi-Dong Yeh, Siang-Ling Li, Ying-Che Peng, Ya-Hsu Fan, Tsung-Chi Chen
Chenopodium quinoa is a natural local lesion host of numerous plant viruses, including tospoviruses (family Bunyaviridae). Groundnut chlorotic fan-spot tospovirus (GCFSV) has been shown to consistently induce local lesions on the leaves of C. quinoa 4 days post-inoculation (dpi). To reveal the whole genome of GCFSV and its interactions with C. quinoa, RNA-seq was performed to determine the transcriptome profiles of C. quinoa leaves. The high-throughput reads from infected C. quinoa leaves were used to identify the whole genome sequence of GCFSV and its single nucleotide polymorphisms...
2017: PloS One
https://www.readbyqxmd.com/read/28771262/commercially-available-gluten-free-pastas-elevate-postprandial-glycemia-in-comparison-to-conventional-wheat-pasta-in-healthy-adults-a-double-blind-randomized-crossover-trial
#16
C S Johnston, D Snyder, C Smith
Given the popularity of gluten-free diets, research regarding the health implications of gluten-free (GF) products is necessary. This study compared the postprandial glycemic responses to three GF pastas commonly available in the U.S. market to that of wheat pasta in healthy adults. Thirteen healthy non-smoking men and women from a university campus population were enrolled in this randomized 4 × 4 block crossover study and completed all four treatments. Participants followed a standardized diet and activity protocol the day prior to testing, and one week separated testing periods...
September 20, 2017: Food & Function
https://www.readbyqxmd.com/read/28742126/the-pre-columbian-introduction-and-dispersal-of-algarrobo-prosopis-section-algarobia-in-the-atacama%C3%A2-desert-of-northern-chile
#17
Virginia B McRostie, Eugenia M Gayo, Calogero M Santoro, Ricardo De Pol-Holz, Claudio Latorre
Archaeological and palaeoecological studies throughout the Americas have documented widespread landscape and environmental transformation during the pre-Columbian era. The highly dynamic Formative (or Neolithic) period in northern Chile (ca. 3700-1550 yr BP) brought about the local establishment of agriculture, introduction of new crops (maize, quinoa, manioc, beans, etc.) along with a major population increase, new emergent villages and technological innovations. Even trees such as the Algarrobos (Prosopis section Algarobia) may have been part of this transformation...
2017: PloS One
https://www.readbyqxmd.com/read/28725039/surface-chemistry-and-germination-improvement-of-quinoa-seeds-subjected-to-plasma-activation
#18
A Gómez-Ramírez, C López-Santos, M Cantos, J L García, R Molina, J Cotrino, J P Espinós, A R González-Elipe
Plasma treatment is recognized as a suitable technology to improve germination efficiency of numerous seeds. In this work Quinoa seeds have been subjected to air plasma treatments both at atmospheric and low pressure and improvements found in germination rate and percentage of success. Seed water uptake by exposure to water vapor, although slightly greater for plasma treated seeds, did not justify the observed germination improvement. To identify other possible factors contributing to germination, the chemical changes experienced by outer parts of the seed upon plasma exposure have been investigated by X-ray photoemission spectroscopy (XPS) and scanning electron microscopy (SEM-EDX)...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28715017/multipodal-dynamic-coordination-involving-cation-%C3%AF-interactions-to-control-the-structure-of-helical-polymers
#19
Mohammad Alzubi, Sandra Arias, Iria Louzao, Emilio Quiñoá, Ricardo Riguera, Félix Freire
A precise tuning of the four possible states of a helix (P/M helical sense and stretched/compressed helical backbone) is attained by controlling the complexation between Li(+) and a poly(phenylacetylene) that bears amide, ester and phenyl ring functionalities at the pendant group. Depending on the MeOH ratio that is present as a cosolvent, different coordination sites are involved in interactions leading to complexes I-III, each one with a characteristic structure (tri-, bi-, and unipodal) and an associated helical state...
July 27, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28680429/identification-of-putative-transmembrane-proteins-involved-in-salinity-tolerance-in-chenopodium-quinoa-by-integrating-physiological-data-rnaseq-and-snp-analyses
#20
Sandra M Schmöckel, Damien J Lightfoot, Rozaimi Razali, Mark Tester, David E Jarvis
Chenopodium quinoa (quinoa) is an emerging crop that produces nutritious grains with the potential to contribute to global food security. Quinoa can also grow on marginal lands, such as soils affected by high salinity. To identify candidate salt tolerance genes in the recently sequenced quinoa genome, we used a multifaceted approach integrating RNAseq analyses with comparative genomics and topology prediction. We identified 219 candidate genes by selecting those that were differentially expressed in response to salinity, were specific to or overrepresented in quinoa relative to other Amaranthaceae species, and had more than one predicted transmembrane domain...
2017: Frontiers in Plant Science
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