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  • Key words: Bone mineral — Calcium — Physical activity — Children — Ethnicity.  (1)
  • biochemistry, biomaterials  (1)
  • bread wheat  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Lifestyle Determinants of Bone Mineral: A Comparison Between Prepubertal Asian- and Caucasian-Canadian Boys and Girls (2000)
    Springer
    Calcified tissue international 66 (2000), S. 320-324 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Bone mineral — Calcium — Physical activity — Children — Ethnicity.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. The purpose of this study was to examine the difference in lifestyle and morphometric factors that affect bone mineral and the attainment of peak bone mass in 168 healthy Asian (n = 58) and Caucasian (n = 110) Canadian, prepubertal girls and boys (mean age 8.9 ± 0.7) living in close geographical proximity. DXA (Hologic 4500) scans of the proximal femur (with regions), lumbar spine, and total body (TB) were acquired. We report areal bone mineral densities (aBMD g/cm2) at all sites and estimated volumetric density (νBMD, g/cm3) at the femoral neck. Dietary calcium, physical activity, and maturity were estimated by questionnaire. Of these prepubertal children, all of the boys and 89% of the girls were Tanner stage 1. A 2 × 2 ANOVA demonstrated no difference between ethnicities for height, weight, body fat, or bone mineral free lean mass. Asian children consumed significantly less dietary calcium (35%) on average and were significantly less active (15%) than their Caucasian counterparts (P 〈 0.001). There were significant ethnicity main effects for femoral neck bone mineral content (BMC) and αBMD (both P 〈 0.001) and significant sex by ethnicity interactions (P 〈 0.01). The Asian boys had significantly lower femoral neck BMC (11%), aBMD (8%), and νBMD (4.4%). At the femoral neck, BMFL mass, sex, and physical activity explained 37% of the total variance in aBMD (P 〈 0.05). In summary, this study demonstrated differences in modifiable lifestyle factors and femoral neck bone mineral between Asian and Caucasian boys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002230010067
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Increased grain protein content and its association with agronomic and end-use quality in two hard red spring wheat populations derived from Triticum turgidum L. var. dicoccoides (2000)
    Springer
    Euphytica 116 (2000), S. 237-242 
    Details
    ISSN: 1573-5060
    Keywords: bread wheat ; increased grain protein ; selection for grain protein ; Triticum aestivum L. ; Triticum turgidum L. var. dicoccoides ; wild emmer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Suitability of wheat (Triticum aestivum L.) for many food products depends on its unique protein. Elevated grain protein content (GPC) and its quality influences the bread making properties of wheat. The objective of this study was to examine the association of elevated GPC with agronomic and end-use quality in two hard red spring wheat recombinant inbred (RI) populations derived from wild emmer (Triticum turgidum L. var. dicoccoides). The two hard red spring populations (ND683/Bergen and Glupro/Bergen) were developed using a single-seed-descent method. ND683 and ‘Glupro’ are high in GPC (180 g kg-1), presumably due to the introgression of gene(s) from Triticum turgidum L. var. dicoccoides and ‘Bergen’ is low in GPC (145 g kg-1). From each of the two populations 12 high- and 12 low-GPC RI lines (F5:7) were selected for replicated testing at two North Dakota (ND) locations in 1995. In both populations, the high-GPC lines had significantly (p 〈 0.05) higher values compared to the low-GPC lines for mean GPC and water absorption. Mean grain yield of the high-GPC lines was not significantly different from the low-GPC lines in both populations. In the ND683/Bergen population, the high-GPC lines had significantly (p 〈 0.05) higher values than the low-GPC lines for mean plant height, days to heading, and flour extraction. GPC was significantly (p 〈 0.05)and negatively associated with test weight and also significantly (p 〈 0.01) and positively associated with water absorption in the Glupro/Bergen population. In these populations, results suggested that it may be possible to select lines that combine higher GPC and acceptable yield level, but later in maturity and taller in plant height.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004004331208
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  • 3
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    Unknown
    {alpha}-Amylase immobilization on amidoximated acrylic microfibres activated by cyanuric chloride (2018)
    Royal Society
    Details
    Publication Date: 2018-11-29
    Description: Enzyme immobilization is one of the most important techniques for industrial applications. It makes the immobilized enzyme more stable and advantageous than the free form in different aspects. α-Amylase was immobilized on 4% cyanuric chloride-activated amidoximated acrylic fabric at pH 7.0 with (79%) maximum efficiency. A field emission scanning electron microscope and Fourier transform infrared were used to confirm the immobilization process. Even after being recycled 10 times, the immobilized enzyme lost just 28% of its initial activity. Owing to immobilization, the pH of the soluble α-amylase was shifted from 6.0 to 6.5. The immobilized α-amylases showed thermal stability at 60°C, and became more resistant to heavy metal ions. The k m values of the immobilized and soluble α-amylases were 9.6 and 3.8 mg starch ml –1 , respectively. In conclusion, this method shows that the immobilized α-amylase proved to be more efficient than its soluble form, and hence could be used during saccharification of starch.
    Keywords: biochemistry, biomaterials
    Electronic ISSN: 2054-5703
    Topics: Natural Sciences in General
    Published by Royal Society
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