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Jag Shoran - One of the best experts on this subject based on the ideXlab platform.
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Application of solvent Retention Capacity tests for the prediction of mixing properties of wheat flour
Journal of Cereal Science, 2005Co-Authors: Sewa Ram, Vinamrata Dawar, Rajender Singh, Jag ShoranAbstract:Abstract One hundred and ninety-two wheat genotypes including 150 released varieties and 42 germplasm lines were evaluated for solvent Retention Capacity (SRC) tests using 1 g of flour and 1 g of wholemeal to determine relationships with mixing properties of their doughs. Strong positive correlations ( p r =0.91) in FWA. The data demonstrated that water absorption is governed mainly to starch damage and pentosan content of the flour. Based on multiple regression analysis an equation was developed to predict FWA and a very high positive correlation ( r =0.91) was observed between predicted FWA and actual FWA. LASRC exhibited significant positive correlations ( p p
Isabel Caçador - One of the best experts on this subject based on the ideXlab platform.
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The influence of Spartina maritima on carbon Retention Capacity in salt marshes from warm-temperate estuaries.
Marine pollution bulletin, 2010Co-Authors: Ana I Sousa, Ana I Lillebø, Miguel A Pardal, Isabel CaçadorAbstract:Salt marshes constitute highly productive systems playing an important role on ecosystem functions. The aim of this study is to compare the role of Spartina maritima salt marshes on carbon cycling. Thus, four salt marshes located in two mesotidal estuarine systems (Tagus and Mondego, two salt marshes per estuary) were studied. The S. maritima above- and belowground biomass, carbon production, decomposition rates (through a litterbag experiment) and carbon content in the sediment were estimated for a one year period in both systems and compared. In Corroios (located at the Tagus estuary) S. maritima salt marsh had the highest belowground production (1008 gC m(-2) y(-1)), slower decomposition rate (k=0.0024 d(-1)), and the highest carbon content in sediments (750 gC m(-2) y(-1)); and thus, the highest carbon Retention Capacity. The other three salt marshes had comparatively higher aboveground productions, higher decomposition rates and lower carbon Retention Capacity. Therefore, Corroios had the most important carbon cycling characteristics. As a whole, results show that differences in carbon cycling in salt marshes depend mostly on its own characteristics and maturity, rather than the system itself. The intrinsic characteristics of the salt marshes, namely the physicochemical conditions determined by the maturity of the system, are more important factors affecting the role of warm-temperate mesotidal salt marshes as carbon sinks.
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Halophyte vegetation influences in salt marsh Retention Capacity for heavy metals.
Environmental pollution (Barking Essex : 1987), 2006Co-Authors: Rosa Reboreda, Isabel CaçadorAbstract:We analysed concentrations of Cu, Cd and Pb in above and belowground tissues of the halophyte species Halimione portulacoides and Spartina maritima, as well as in sediments and pore water between the roots in a Tagus estuary salt marsh (Portugal). From these results we calculated the pools of metals in the compartments mentioned above. Relative percentages of accumulation in each pool were also determined. Our aim was to determine how the type of vegetation in the salt marsh affects overall metal Retention Capacity of the system. It was concluded that areas colonised by H. portulacoides are potential sources of Cu, Cd and Pb to the marsh ecosystem, whereas areas colonised by S. maritima are more effective sinks at least for Cu and Cd. Consequently, S. maritima seems to contribute more effectively to the stabilisation of metals in salt marsh sediments, reducing their availability to the estuarine system.
S E Mpofu - One of the best experts on this subject based on the ideXlab platform.
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cattle manure effects on structural stability and water Retention Capacity of a granitic sandy soil in zimbabwe
Soil & Tillage Research, 2001Co-Authors: J Nyamangara, J Gotosa, S E MpofuAbstract:Abstract The evaluation of soil aggregate stability and water Retention is important in the assessment of soil management options. A 3-year study was conducted in 1999 to determine the effects of two cattle manure application methods on soil aggregate stability and water Retention Capacity of a sandy soil (Haplic Lixisol). Manure application increased soil organic C by 10–38% in the 0–10 cm layer. Compared with the control, manure management treatments increased the aggregate stability of soil as measured by the mean weight diameter (MWD) and aggregates between 2 and 10 mm (AGG2) indices from 0.243 to 0.733–0.926 mm, and from 27.3 to 128.3–148.3 g kg −1 , respectively. The readily available water (RAW) Capacity of the soil was significantly increased by manure addition, whereas the increase in AWC was not significant. The increase in water Retention Capacity in the soil was more affected at low suctions and this was related to the effects of manure on macroporosity. It was concluded that cattle manure was beneficial to the structural stability and water Retention of this soil.
Jan A. Delcour - One of the best experts on this subject based on the ideXlab platform.
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Relative contribution of wheat flour constituents to Solvent Retention Capacity profiles of European wheats
Journal of Cereal Science, 2011Co-Authors: Annelies E. Duyvejonck, Bert Lagrain, Bram Pareyt, Christophe M. Courtin, Jan A. DelcourAbstract:Abstract Solvent Retention Capacity (SRC) tests have originally been designed to predict flour functionality of North American wheat flours. A SRC profile consists of its Water Retention Capacity (WRC), Sodium Carbonate SRC (SCSRC), Sucrose SRC (SuSRC) and Lactic Acid SRC (LASRC) values. As the value of such tests when considering European wheat flours is rather unclear, we studied the chemical composition and SRC profiles of nineteen commercial European wheat flours. Their WRC, SCSRC, SuSRC and LASRC ranged from 56 to 66%, 74 to 88%, 90 to 102% and 106 to 147%, respectively. Both WRC and SCSRC were mostly higher than those of North American soft wheat flours, but in the range of those of North American hard wheat flours. For the entire set of European flours, strong linear relations were observed between the flour damaged starch levels and WRC values, as well as with SCSRC values. Modifying specific flour constituent properties and levels illustrated the contribution of proteins, damaged starch and arabinoxylan (AX) to the SRC values. Flour proteins, especially glutenins, mainly contributed to LASRC, while damaged starch largely impacted flour SCSRC. Water-extractable AX only contributed to the SuSRC values, whereas the solvent-accessible AX generally contributed to all SRC values, and particularly to the SuSRC values.
Sewa Ram - One of the best experts on this subject based on the ideXlab platform.
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Application of solvent Retention Capacity tests for the prediction of mixing properties of wheat flour
Journal of Cereal Science, 2005Co-Authors: Sewa Ram, Vinamrata Dawar, Rajender Singh, Jag ShoranAbstract:Abstract One hundred and ninety-two wheat genotypes including 150 released varieties and 42 germplasm lines were evaluated for solvent Retention Capacity (SRC) tests using 1 g of flour and 1 g of wholemeal to determine relationships with mixing properties of their doughs. Strong positive correlations ( p r =0.91) in FWA. The data demonstrated that water absorption is governed mainly to starch damage and pentosan content of the flour. Based on multiple regression analysis an equation was developed to predict FWA and a very high positive correlation ( r =0.91) was observed between predicted FWA and actual FWA. LASRC exhibited significant positive correlations ( p p
