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https://www.readbyqxmd.com/read/29718936/diversity-and-population-structure-of-red-rice-germplasm-in-bangladesh
#1
M Z Islam, M Khalequzzaman, M F R K Prince, M A Siddique, E S M H Rashid, M S U Ahmed, B R Pittendrigh, M P Ali
While the functionality and healthy food value of red rice have increased its popularity, such that market demand for it is expected to rise, most strains suffer from low grain yield. To perform diversity and population structure analyses of red rice germplasm, therefore, becomes essential for improving yields for commercial production. In this study, fifty red rice germplasm from the Bangladesh Rice Research Institute (BRRI) genebank were characterized both morphologically and genetically using fifty simple sequence repeat (SSR) markers...
2018: PloS One
https://www.readbyqxmd.com/read/29671830/seed-dormancy-involves-a-transcriptional-program-that-supports-early-plastid-functionality-during-imbibition
#2
Alberto Gianinetti, Franca Finocchiaro, Paolo Bagnaresi, Antonella Zechini, Primetta Faccioli, Luigi Cattivelli, Giampiero Valè, Chiara Biselli
Red rice fully dormant seeds do not germinate even under favorable germination conditions. In several species, including rice, seed dormancy can be removed by dry-afterripening (warm storage); thus, dormant and non-dormant seeds can be compared for the same genotype. A weedy (red) rice genotype with strong dormancy was used for mRNA expression profiling, by RNA-Seq, of dormant and non-dormant dehulled caryopses (here addressed as seeds) at two temperatures (30 °C and 10 °C) and two durations of incubation in water (8 h and 8 days)...
April 19, 2018: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29655700/effects-on-oral-fat-load-of-a-nutraceutical-combination-of-fermented-red-rice-sterol-esters-and-stanols-curcumin-and-olive-polyphenols-a-randomized-placebo-controlled-trial
#3
Giuseppe Derosa, Gabriele Catena, Riccardo Raddino, Giovanni Gaudio, Antonio Maggi, Angela D'Angelo, Pamela Maffioli
BACKGROUND: In literature, there are several studies about the effects of nutraceutical combinations at fasting, but data in post-prandial phase are lacking. PURPOSE: We planned a study to evaluate the efficacy and safety of a nutraceutical agent containing fermented red rice, phytosterols and olive polyphenols compared to placebo in a sample of Caucasian patients with low cardiovascular risk, both at fasting and after an oral fat load. STUDY DESIGN: Eighty patients were randomized to receive, as addition to diet and physical activity, a nutraceutical combination containing fermented red rice, sterol esters and stanols, curcumin, and olive polyphenols or placebo (control group), once a day...
March 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29514441/anthocyanin-and-proanthocyanidin-contents-antioxidant-activity-and-in-situ-degradability-of-black-and-red-rice-grains
#4
Kenji Hosoda, Hideki Sasahara, Kei Matsushita, Yasuaki Tamura, Makoto Miyaji, Hiroki Matsuyama
Objective: An experiment was conducted to assess the antioxidant contents and activities of colored rice grains and to evaluate their nutritive characteristics in terms of chemical composition and in situ ruminal degradation. Methods: Ten cultivars of colored rice grains (Oryza sativa L.) collected from several areas of Japan were studied, and control rice without pigment, maize, barley, and wheat grains were used as control grains. Their chemical compositions, pigment, polyphenol contents, total antioxidant capacity (TAC), and degradation characteristics were determined...
March 2, 2018: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29462992/new-bacterial-phytase-through-metagenomic-prospection
#5
Nathálya Farias, Isabela Almeida, Carlos Meneses
Alkaline phytases from uncultured microorganisms, which hydrolyze phytate to less phosphorylated myo-inositols and inorganic phosphate, have great potential as additives in agricultural industry. The development of metagenomics has stemmed from the ineluctable evidence that as-yet-uncultured microorganisms represent the vast majority of organisms in most environments on earth. In this study, a gene encoding a phytase was cloned from red rice crop residues and castor bean cake using a metagenomics strategy. The amino acid identity between this gene and its closest published counterparts is lower than 60%...
February 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29455357/phytochemical-constituents-antioxidant-activity-and-antiproliferative-properties-of-black-red-and-brown-rice-bran
#6
Ali Ghasemzadeh, Mohamad Taghi Karbalaii, Hawa Z E Jaafar, Asmah Rahmat
BACKGROUND: In the recent years, the health benefits of the pigmented rice varieties have reported due to the presence of bioactive compounds. In this study, the phytochemical constituents (total phenolic, flavonoid and anthocyanin content) and individual phenolics and flavonoids of the extracts of sixteen genotypes of pigmented rice bran were evaluated using spectrophotometric and ultra-high performance liquid chromatography method. Antioxidative properties of the free and bound fractions were evaluated using nitric oxide and 1,1-diphenyl-2-picrylhydrazyl scavenging assays...
February 17, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/29389631/evaluating-the-sensory-properties-of-unpolished-australian-wild-rice
#7
Tiparat Tikapunya, Robert J Henry, Heather Smyth
Australian wild rices are genetically distinct from commercially cultivated rices and present new opportunities for the development of improved rice cultivars. Before use in rice breeding, the eating and cooking properties of Australian wild rice must first be understood as these are key factors in determining rice quality and consumer acceptance. Samples of Australian wild rice (taxa B) were collected and evaluated together with a commercial Canadian wild rice (Zizania aquatic L.), Oryza sativa L.cv. Nipponbare, and selected commercial rices including long grain, medium grain, basmati, red basmati, and red rice...
January 2018: Food Research International
https://www.readbyqxmd.com/read/29367480/effects-of-extraction-methods-on-phytochemicals-of-rice-bran-oils-produced-from-colored-rice
#8
Sukanya Mingyai, Khongsak Srikaeo, Aikkarach Kettawan, Riantong Singanusong, Kiyotaka Nakagawa, Fumiko Kimura, Junya Ito
Rice bran oil (RBO) especially from colored rice is rich in phytochemicals and has become popular in food, cosmetic, nutraceutical and pharmaceutical applications owing to its offering health benefits. This study determined the contents of phytochemicals including oryzanols, phytosterols, tocopherols (Toc) and tocotrienols (T3) in RBOs extracted using different methods namely cold-press extraction (CPE), solvent extraction (SE) and supercritical CO2 extraction (SC-CO2). Two colored rice, Red Jasmine rice (RJM, red rice) and Hom-nin rice (HN, black rice), were studied in comparison with the popular Thai fragrant rice Khao Dawk Mali 105 (KDML 105, white rice)...
January 23, 2018: Journal of Oleo Science
https://www.readbyqxmd.com/read/29137779/physicochemical-properties-of-germinated-dehulled-rice-flour-and-energy-requirement-in-germination-as-affected-by-ultrasound-treatment
#9
Junzhou Ding, Gary G Hou, Mengyi Dong, Shanbai Xiong, Siming Zhao, Hao Feng
Limited data are published regarding changes in the physicochemical properties of rice flours from germinated de-hulled rice treated by ultrasound. This work was undertaken to evaluate the effect of ultrasound treatment (25 kHz, 16 W/L, 5 min) on starch hydrolysis and functional properties of rice flours produced from ultrasound-treated red rice and brown rice germinated for up to 36 h. Environmental Scanning Electron Microscopy (ESEM) microimages showed that the ultrasound treatment altered the surface microstructure of rice, which helped to improve moisture transfer during steam-cooking...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29037710/cooking-quality-properties-and-free-and-bound-phenolics-content-of-brown-black-and-red-rice-grains-stored-at-different-temperatures-for-six-months
#10
Valmor Ziegler, Cristiano Dietrich Ferreira, Jessica Fernanda Hoffmann, Fábio Clasen Chaves, Nathan Levien Vanier, Maurício de Oliveira, Moacir Cardoso Elias
The changes in cooking quality and phenolic composition of whole black and red rice grains stored during six months at different temperatures were evaluated. Brown rice with known cooking quality properties and low phenolic levels was used for purposes comparison. All rice genotypes were stored at 13% moisture content at temperatures of 16, 24, 32, and 40°C. Cooking time, hardness, free and bound phenolics, anthocyanins, proanthocyanidins, and free radical scavenging capacity were analysed. The traditional rice with brown pericarp exhibited an increase in cooking time and free phenolics content, while rice with black pericarp exhibited a reduction in cooking time after six months of storage at the highest studied temperature of 40°C...
March 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28946487/enhancement-of-gama-aminobutyric-acid-gaba-and-other-health-related-metabolites-in-germinated-red-rice-oryza-sativa-l-by-ultrasonication
#11
Junzhou Ding, Alexander V Ulanov, Mengyi Dong, Tewu Yang, Boris V Nemzer, Shanbai Xiong, Siming Zhao, Hao Feng
Red rice (Oryza sativa L.) that has a red (reddish brown) bran layer in de-hulled rice is known to contain rich biofunctional components. Germination is an effective technique to improve the nutritional quality, digestibility, and flavor of de-hulled rice. Ultrasonication, a form of physical stimulation, has been documented as a novel approach to improve the nutritional quality of plant-based food. This study was undertaken to test the use of ultrasound to enhance the nutritional value of red rice. Ultrasonication (5min, 16W/L) was applied to rice during soaking or after 66h germination...
January 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28873629/phenolic-acids-anthocyanins-proanthocyanidins-antioxidant-activity-minerals-and-their-correlations-in-non-pigmented-red-and-black-rice
#12
Yafang Shao, Zhanqiang Hu, Yonghong Yu, Renxiang Mou, Zhiwei Zhu, Trust Beta
Soluble-free, soluble-conjugated, insoluble-bound phenolics and antioxidant activity, flavonoid (TFC), proanthocyanidins (TPAC), anthocyanins and minerals of fifteen whole rice grains with different colors were investigated. Soluble-free protocatechuic and vanillic acids were only quantified in black rice, which had the most quantities. Non-pigmented rice had no detectable conjugated protocatechuic and 2,5-dihydroxybenzoic acids both of which were found in black and red rice, respectively. The main bound phenolic acids were ferulic and p-coumaric, as well as 2,5-dihydroxybenzoic in red rice and protocatechuic and vanillic acids in black rice...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28873531/investigation-of-color-deepening-phenomenon-in-catechin-4%C3%A2-8-dimer-as-a-proanthocyanidin-model-and-structural-determination-of-its-derivatives-by-oxidation
#13
Sakina Hayashi, Kohei Nakano, Emiko Yanase
To elucidate the mechanism of the color-deepening phenomenon in aged red rice samples, a partial structure of proanthocyanidin, (+)-catechin-(4→8)-dimer (1), was synthesized as a model compound and subjected to chemical oxidation. HPLC analysis of oxidized 1 revealed new peaks which were isolated; among these, four compounds (2-5) having formed intramolecular bonds between the D and B rings were determined. These compounds and their derivatives in red rice extracts were identified by multiple reaction monitoring mass spectrometry...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28834651/gene-flow-from-single-and-stacked-herbicide-resistant-rice-oryza-sativa-modeling-occurrence-of-multiple-herbicide-resistant-weedy-rice
#14
Joseph Dauer, Andrew Hulting, Dale Carlson, Luke Mankin, John Harden, Carol Mallory-Smith
BACKGROUND: Provisia™ rice (PV), a non-genetically engineered (GE) quizalofop-resistant rice, will provide growers with an additional option for weed management to use in conjunction with Clearfield® rice (CL) production. Modeling compared the impact of stacking resistance traits versus single traits in rice on introgression of the resistance trait to weedy rice (also called red rice). Common weed management practices were applied to 2-, 3- and 4-year crop rotations, and resistant and multiple-resistant weedy rice seeds, seedlings and mature plants were tracked for 15 years...
February 2018: Pest Management Science
https://www.readbyqxmd.com/read/28646518/comparative-proteomics-and-protein-profile-related-to-phenolic-compounds-and-antioxidant-activity-in-germinated-oryza-sativa-kdml105-and-thai-brown-rice-mali-daeng-for-better-nutritional-value
#15
COMPARATIVE STUDY
Sarunyaporn Maksup, Sarintip Pongpakpian, Sittiruk Roytrakul, Suriyan Cha-Um, Kanyaratt Supaibulwatana
BACKGROUND: Brown rice (BR) and germinated brown rice (GBR) are considered as prime sources of carbohydrate and bioactive compounds for more than half of the populations worldwide. Several studies have reported on the proteomics of BR and GBR; however, the proteomic profiles related to the synthesis of bioactive compounds are less well documented. In the present study, BR and GBR were used in a comparative analysis of the proteomic and bioactive compound profiles for two famous Thai rice varieties: Khao Dawk Mali 105 (KDML) and Mali Daeng (MD)...
January 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28539687/phylogenetic-analysis-of-monascus-and-new-species-from-honey-pollen-and-nests-of-stingless-bees
#16
R N Barbosa, S L Leong, O Vinnere-Pettersson, A J Chen, C M Souza-Motta, J C Frisvad, R A Samson, N T Oliveira, J Houbraken
The genus Monascus was described by van Tieghem (1884) to accommodate M. ruber and M. mucoroides, two species with non-ostiolate ascomata. Species delimitation in the genus is still mainly based on phenotypic characters, and taxonomic studies that include sequence data are limited. The genus is of economic importance. Species are used in fermented Asian foods as food colourants (e.g. 'red rice' (ang-kak, angka)) and found as spoilage organisms, and recently Monascus was found to be essential in the lifecycle of stingless bees...
March 2017: Studies in Mycology
https://www.readbyqxmd.com/read/28529082/rice-expression-database-red-an-integrated-rna-seq-derived-gene-expression-database-for-rice
#17
Lin Xia, Dong Zou, Jian Sang, Xingjian Xu, Hongyan Yin, Mengwei Li, Shuangyang Wu, Songnian Hu, Lili Hao, Zhang Zhang
Rice is one of the most important stable food as well as a monocotyledonous model organism for the plant research community. Here, we present RED (Rice Expression Database; http://expression.ic4r.org), an integrated database of rice gene expression profiles derived entirely from RNA-Seq data. RED features a comprehensive collection of 284 high-quality RNA-Seq experiments, integrates a large number of gene expression profiles and covers a wide range of rice growth stages as well as various treatments. Based on massive expression profiles, RED provides a list of housekeeping and tissue-specific genes and dynamically constructs co-expression networks for gene(s) of interest...
May 20, 2017: Journal of Genetics and Genomics, Yi Chuan Xue Bao
https://www.readbyqxmd.com/read/28515384/physicochemical-and-antioxidant-properties-of-rice-bran-oils-produced-from-colored-rice-using-different-extraction-methods
#18
Sukanya Mingyai, Aikkarach Kettawan, Khongsak Srikaeo, Riantong Singanusong
This study investigated the physicochemical and antioxidant properties of rice bran oil (RBO) produced from the bran of three rice varities; Khao Dawk Mali 105 (white rice), Red Jasmine rice (red rice) and Hom-nin rice (black rice) using three extraction methods including cold-press extraction (CPE), solvent extraction (SE) and supercritical CO2 extraction (SC-CO2). Yields, color, acid value (AV), free fatty acid (FFA), peroxide value (PV), iodine value (IV), total phenolic compound (TPC), γ-oryzanol, α-tocopherol and fatty acid profile were analyzed...
June 1, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28481231/zeolite-containing-mixture-supplementation-ameliorated-dextran-sodium-sulfate-induced-colitis-in-mice-by-suppressing-the-inflammatory-bowel-disease-pathway-and-improving-apoptosis-in-colon-mucosa
#19
Weida Lyu, Huijuan Jia, Chuanzong Deng, Kenji Saito, Seigo Yamada, Hisanori Kato
Inflammatory bowel disease (IBD) is induced by multiple environmental factors, and there is still no known treatment capable of curing the disease completely. We propose a zeolite-containing mixture (Hydryeast® , HY)-a multi-component nutraceutical of which the main ingredients are Azumaceramics (mixture of zeolite and oyster shell burned under high temperature), citric acid, red rice yeast (monascus) and calcium stearate-as a nutraceutical intervention in IBD to ameliorate dextran sodium sulfate (DSS)-induced colitis...
May 6, 2017: Nutrients
https://www.readbyqxmd.com/read/27843741/trace-elements-in-native-and-improved-paddy-rice-from-different-climatic-regions-of-sri-lanka-implications-for-public-health
#20
Saranga Diyabalanage, Thamara Navarathna, Hemalika T K Abeysundara, Sanath Rajapakse, Rohana Chandrajith
BACKGROUND: Samples of 226 new improved and 21 indigenous rice (Oryza sativa L.) varieties were collected from the rice fields in three climatic zones of Sri Lanka and concentrations of 18 trace elements (Li, B, Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Sr, Mo, Cd, Ba, Pb and Bi) were measured giving particular emphasis on Se, Cd and As using ICP-MS. The two way multivariate analysis of variance (MANOVA) method was employed to identify the differences in composition among rice from different climatic zones...
2016: SpringerPlus
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