The Experts below are selected from a list of 4428 Experts worldwide ranked by ideXlab platform
Weibao Kong - One of the best experts on this subject based on the ideXlab platform.
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evaluation of antioxidant activities and total phenolic contents of typical Malting Barley varieties
Food Chemistry, 2008Co-Authors: Haifeng Zhao, Wei Fan, Jianjun Dong, Jian Chen, Lianju Shan, Yan Lin, Weibao KongAbstract:Abstract Fourteen typical Malting Barley varieties from China were evaluated for their DPPH radical, ABTS radical cation and superoxide anion radical scavenging activities, reducing power, metal chelating activities, and total phenolic contents (TPC). All Barley samples exhibited significant antioxidant activities determined by different assays, and contained significant levels of phenolic compounds. Gan4 and Wupi1 Barley exhibited the highest DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power. Gan4 and Humai16 Barley showed the highest TPC, whereas the highest superoxide anion radical scavenging activity and metal chelating activity were found in Huaimai19 and Ken3 Barley, respectively. The Pearson correlation analysis revealed that the TPC showed strong correlations with DPPH radical scavenging activity, ABTS radical cation scavenging activity, and reducing power (P 0.05). Moreover, DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power were well positively correlated with each other (P
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evaluation of antioxidant activities and total phenolic contents of typical Malting Barley varieties
Food Chemistry, 2008Co-Authors: Haifeng Zhao, Jianjun Dong, Jian Chen, Lianju Shan, Jian Lu, Weibao KongAbstract:Fourteen typical Malting Barley varieties from China were evaluated for their DPPH radical, ABTS radical cation and superoxide anion radical scavenging activities, reducing power, metal chelating activities, and total phenolic contents (TPC). All Barley samples exhibited significant antioxidant activities determined by different assays, and contained significant levels of phenolic compounds. Gan4 and Wupi1 Barley exhibited the highest DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power. Gan4 and Humai16 Barley showed the highest TPC, whereas the highest superoxide anion radical scavenging activity and metal chelating activity were found in Huaimai19 and Ken3 Barley, respectively. The Pearson correlation analysis revealed that the TPC showed strong correlations with DPPH radical scavenging activity, ABTS radical cation scavenging activity, and reducing power (P 0.05). Moreover, DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power were well positively correlated with each other (P < 0.01). Principal component analysis (PCA) was applied to understand the interrelationships among the measured antioxidant activity evaluation indices, and to gain an overview of the similarities and differences among the 14 Barley varieties.
Gary J Muehlbauer - One of the best experts on this subject based on the ideXlab platform.
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mapping Malting quality and yield characteristics in a north american two rowed Malting Barley wild Barley advanced backcross population
Molecular Breeding, 2019Co-Authors: Liana Nice, Paul B Schwarz, Laszlo Gyenis, Brian J. Steffenson, Kevin P Smith, Yadong Huang, Gary J MuehlbauerAbstract:Due to the stringent quality requirements imposed by the US Malting Barley industry, Barley breeders have been reluctant to introduce exotic germplasm into cultivar development programs. To determine whether wild Barley (Hordeum vulgare ssp. spontaneum) contains favorable alleles for yield and Malting quality characteristics, we mapped quantitative trait loci (QTL) for heading date, height, lodging, yield, and nine Malting parameters important to the Malting and brewing industry. Traits were mapped in a wild x cultivated Barley BC2-derived advanced backcross mapping population. Harrington, the recurrent parent, is a North American two-rowed Malting Barley cultivar, and OUH602, the donor parent, is a wild Barley accession that exhibits resistance to multiple Barley diseases. The 98 derived lines were grown in replicated field trials at St. Paul and Crookston, MN in 2009–2011. One to four QTL were identified for each trait, for a total of 36 QTL. Trangressive segregants for increased yield were identified and four lines had higher yield than Harrington across all environments; however, for yield QTL the OUH602 alleles decreased the trait value. Wild Barley alleles had both positive and negative effects on the Malting traits of diastatic power, free amino nitrogen, and soluble protein. Combined with the previously identified QTL associated with resistance to fungal diseases, this population represents a rich resource for Barley breeding. To facilitate future breeding and genetics studies with this population, a set of pre-introgression lines composed of 28 BC2-derived and 6 BC3-derived lines were identified that collectively contain introgressions across the entire OUH602 genome.
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structural and functional characterization of a winter Malting Barley
Theoretical and Applied Genetics, 2010Co-Authors: Maria Munozamatriain, Kevin P Smith, L Cistue, Yer Xiong, Hatice Bilgic, P M Hayes, Gary J MuehlbauerAbstract:The development of winter Malting Barley (Hordeum vulgare L.) varieties is emerging as a worldwide priority due to the numerous advantages of these varieties over spring types. However, the complexity of both Malting quality and winter hardiness phenotypes makes simultaneous improvement a challenge. To obtain an understanding of the relationship between loci controlling winter hardiness and malt quality and to assess the potential for breeding winter Malting Barley varieties, we structurally and functionally characterized the six-row accession “88Ab536”, a cold-tolerant line with superior Malting quality characteristics that derives from the cross of NE76129/Morex//Morex. We used 4,596 SNPs to construct the haplotype structure of 88Ab536 on which Malting quality and winter hardiness loci reported in the literature were aligned. The genomic regions determining Malting quality and winter hardiness traits have been defined in this founder germplasm, which will assist breeders in targeting regions for marker-assisted selection. The Barley1 GeneChip array was used to functionally characterize 88Ab536 during Malting. Its gene expression profile was similar to that of the archetypical Malting variety Morex, which is consistent with their similar Malting quality characteristics. The characterization of 88Ab536 has increased our understanding of the genetic relationships of Malting quality and winter hardiness, and will provide a genetic foundation for further development of more cold-tolerant varieties that have malt quality characteristics that meet or exceed current benchmarks.
W Kuhbauch - One of the best experts on this subject based on the ideXlab platform.
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regional yield forecasts of Malting Barley hordeum vulgare l by noaa avhrr remote sensing data and ancillary data
Journal of Agronomy and Crop Science, 2005Co-Authors: C J Weissteiner, W KuhbauchAbstract:Yield forecasts are of major interest to the Malting and brewing industry in order to allow the most convenient organization of the respective policy of raw materials. As Malting Barley is predominantly cultivated in a limited set of growing regions because of its special requirements, yield predictions can be limited to these regions of interest. Within this investigation, Malting Barley yield forecasts (Hordeum vulgare L.) are performed for typical growing regions in southwestern Germany. Multitemporal remote sensing data on the one hand and ancillary data such as meteorological, phenological, pedological, agro statistical and administrative data on the other hand are used as input data for two versions of prediction models, which are both based on an empirical–statistical modelling approach. The basic version of the yield estimation model is conducted by means of linear correlation of remote sensing data [national oceanic and atmospheric administration-advanced very high resolution radiometer (NOAA-AUHRR) normalized difference vegetation index (NDVI) maximum value composites], CORINE land cover data and agro statistical data. In an extended version, meteorological data (temperature and evapotranspiration) and soil data are incorporated. Yield predictions are significantly influenced by the selected time span for NDVI integration. For NDVI time-integration across the grain-filling period, the mean deviation of reported and simulated yield is 7.0 and 6.4 %, respectively, for the basic and extended yield estimation model.
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relationships between yield and quality parameters of Malting Barley hordeum vulgare l and phenological and meteorological data
Journal of Agronomy and Crop Science, 2003Co-Authors: K Schelling, C J Weissteiner, K Born, W KuhbauchAbstract:In this study, phenological and meteorological data have been used to interpret variations in a time series of regional average yields and quality parameters of Malting Barley (Hordeum vulgare L). The analyses were focused mainly on the grain filling period. Duration and occurrence of this development stage showed remarkable differences from year to year, as heading varied over more than four weeks and yellow ripeness over two weeks in the investigation period from 1974 to 1996. Yields above average were achieved only in years when grain filling duration exceeded 42 d. Protein concentrations below 10.5 % and grading percentages over 90 % required at least 44 d of grain filling. Temperature had the strongest influence on the length of grain filling, even though the calculated Growing Degree Days (base temperature 3 °C) were not absolutely constant. Mean daily temperature and relative air humidity were the best estimators with respect to grain yield. An optimum temperature range was found between 14 and 18 °C. Assuming a linear relationship, yield reductions between 4.1 and 5.7 % have been calculated for every 1 °C increase of the mean daily temperature. Relative air humidity was the best single estimator for grain protein concentration. The results of this study suggest that relative humidity during grain filling can be a more suitable parameter to describe drought stress effects than precipitation amounts from heading to yellow ripeness or from January 1 to yellow ripeness.
Haifeng Zhao - One of the best experts on this subject based on the ideXlab platform.
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evaluation of antioxidant activities and total phenolic contents of typical Malting Barley varieties
Food Chemistry, 2008Co-Authors: Haifeng Zhao, Wei Fan, Jianjun Dong, Jian Chen, Lianju Shan, Yan Lin, Weibao KongAbstract:Abstract Fourteen typical Malting Barley varieties from China were evaluated for their DPPH radical, ABTS radical cation and superoxide anion radical scavenging activities, reducing power, metal chelating activities, and total phenolic contents (TPC). All Barley samples exhibited significant antioxidant activities determined by different assays, and contained significant levels of phenolic compounds. Gan4 and Wupi1 Barley exhibited the highest DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power. Gan4 and Humai16 Barley showed the highest TPC, whereas the highest superoxide anion radical scavenging activity and metal chelating activity were found in Huaimai19 and Ken3 Barley, respectively. The Pearson correlation analysis revealed that the TPC showed strong correlations with DPPH radical scavenging activity, ABTS radical cation scavenging activity, and reducing power (P 0.05). Moreover, DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power were well positively correlated with each other (P
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evaluation of antioxidant activities and total phenolic contents of typical Malting Barley varieties
Food Chemistry, 2008Co-Authors: Haifeng Zhao, Jianjun Dong, Jian Chen, Lianju Shan, Jian Lu, Weibao KongAbstract:Fourteen typical Malting Barley varieties from China were evaluated for their DPPH radical, ABTS radical cation and superoxide anion radical scavenging activities, reducing power, metal chelating activities, and total phenolic contents (TPC). All Barley samples exhibited significant antioxidant activities determined by different assays, and contained significant levels of phenolic compounds. Gan4 and Wupi1 Barley exhibited the highest DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power. Gan4 and Humai16 Barley showed the highest TPC, whereas the highest superoxide anion radical scavenging activity and metal chelating activity were found in Huaimai19 and Ken3 Barley, respectively. The Pearson correlation analysis revealed that the TPC showed strong correlations with DPPH radical scavenging activity, ABTS radical cation scavenging activity, and reducing power (P 0.05). Moreover, DPPH radical scavenging activity, ABTS radical cation scavenging activity and reducing power were well positively correlated with each other (P < 0.01). Principal component analysis (PCA) was applied to understand the interrelationships among the measured antioxidant activity evaluation indices, and to gain an overview of the similarities and differences among the 14 Barley varieties.
Paul B Schwarz - One of the best experts on this subject based on the ideXlab platform.
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mapping Malting quality and yield characteristics in a north american two rowed Malting Barley wild Barley advanced backcross population
Molecular Breeding, 2019Co-Authors: Liana Nice, Paul B Schwarz, Laszlo Gyenis, Brian J. Steffenson, Kevin P Smith, Yadong Huang, Gary J MuehlbauerAbstract:Due to the stringent quality requirements imposed by the US Malting Barley industry, Barley breeders have been reluctant to introduce exotic germplasm into cultivar development programs. To determine whether wild Barley (Hordeum vulgare ssp. spontaneum) contains favorable alleles for yield and Malting quality characteristics, we mapped quantitative trait loci (QTL) for heading date, height, lodging, yield, and nine Malting parameters important to the Malting and brewing industry. Traits were mapped in a wild x cultivated Barley BC2-derived advanced backcross mapping population. Harrington, the recurrent parent, is a North American two-rowed Malting Barley cultivar, and OUH602, the donor parent, is a wild Barley accession that exhibits resistance to multiple Barley diseases. The 98 derived lines were grown in replicated field trials at St. Paul and Crookston, MN in 2009–2011. One to four QTL were identified for each trait, for a total of 36 QTL. Trangressive segregants for increased yield were identified and four lines had higher yield than Harrington across all environments; however, for yield QTL the OUH602 alleles decreased the trait value. Wild Barley alleles had both positive and negative effects on the Malting traits of diastatic power, free amino nitrogen, and soluble protein. Combined with the previously identified QTL associated with resistance to fungal diseases, this population represents a rich resource for Barley breeding. To facilitate future breeding and genetics studies with this population, a set of pre-introgression lines composed of 28 BC2-derived and 6 BC3-derived lines were identified that collectively contain introgressions across the entire OUH602 genome.
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effect of electron beam irradiation on the safety and quality of fusarium infected Malting Barley
International Journal of Food Microbiology, 2006Co-Authors: Balasubrahmanyam Kottapalli, Charlene E Wolfhall, Paul B SchwarzAbstract:Utilization of Fusarium-infected Barley for Malting may lead to mycotoxin production during Malting and decreased malt quality. Electron-beam irradiation may prevent safety and quality defects and allow use of otherwise good quality Barley. We evaluated electron-beam irradiation for preventing Fusarium growth and mycotoxin production while maintaining Barley-malt quality characteristics. Four Barley lots with varying deoxynivalenol (DON) concentrations were irradiated at 0, 2, 4, 6, 8, and 10 kGy. Treated Barley was malted in a pilot-scale Malting unit. Barley and malt were analyzed for Fusarium infection (FI), germinative energy (GE), aerobic plate counts (APC), mold and yeast counts (MYC), and DON. Malt quality parameters included malt extract, soluble protein, wort color, wort viscosity, free amino nitrogen, alpha-amylase, and diastatic power. FI, APC, and MYC decreased in Barley with an increase in dosage. The APC and MYC for malts from Barley exposed to 8-10 kGy were slightly higher than in other malted samples indicating that irradiation-resistant microflora could flourish during Malting. Barley GE significantly decreased (3-15%) at 8-10 kGy. Although irradiation had no effect on DON in raw Barley, DON decreased significantly (60-100%) in finished malts prepared from treated Barley (6-10 kGy). Malt quality parameters were slightly affected by electron-beam radiation. The results suggest 6-8 kGy may be effective for reducing FI in Barley and DON in malt with minimal effects on malt quality.
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evaluation of gaseous ozone and hydrogen peroxide treatments for reducing fusarium survival in Malting Barley
Journal of Food Protection, 2005Co-Authors: Balasubrahmanyam Kottapalli, Charlene E Wolfhall, Paul B SchwarzAbstract:The use of Fusarium-infected Barley for Malting can lead to mycotoxin production and decreased malt quality. Methods for treatment of Fusarium-infected Barley might prevent these safety and quality defects and allow use of otherwise good-quality Barley. Gaseous ozone and hydrogen peroxide (HP) were evaluated for effectiveness in reducing Fusarium survival while maintaining germinative energy (GE) in Barley. Gaseous ozone treatments (GOT) included concentrations of 11 and 26 mg/g for 0, 15, 30, and 60 min. HP treatments included 0, 5, 10, and 15% concentrations with exposure times of 0, 5, 10, 15, 20, and 30 min. For GOT, in naturally Fusarium-infected Barley, a statistically significant (P 0.05) effect on GE in sound Barley at either concentration over the full 30-min exposure time. For HP, Fusarium survival was significantly decreased (50 to 98%) within 5 min of exposure. With the exception of two treatments (10 and 15% HP agitated for 20 min), GE was not statistically significantly different from the control in naturally Fusarium-infected Barley. In sound Barley, HP had no significant (P > 0.05) effect on GE. The results suggest that GOT and HP might have potential for treatment of Fusarium-infected Malting Barley.