HPLC with the triple column system had been optimized and applied for the analysis of biotin in various food samples. The foods with the biotin concentration over 0.10 mu g/g were 13 kinds of foods such as soybean (2.037 mu g/g), soy milk (0.591 mu g/g), pork liver (0.455 mu g/g), etc. The total daily biotin exposure per person via average and
the 95(th) percentile food intake was 44.656 and 169.416 mu g, respectively. The Korean staple food, rice contributed as fifth diet for biotin intake (3.433 mu g/person/day) following soybean (9.167 mu g/person/day) selleck > milk (6.018 mu g/person/day) > soy milk (4.433 mu g/person/day) > beer (4.428 mu g/person/day).”
“Magnetic properties of sol-gel and conventional ceramic processed Ba3Co2Fe2O41 hexaferrite were investigated and compared for terrestrial digital multimedia broadcasting (T-DMB) antenna application. All of the synthesized powder and sintered body showed almost single Z-phase. The loss tan delta of sol-gel processed and sintered Co(2)Z hexaferrite was 0.010 at 200 MHz, while conventional ceramic processed and sintered Co(2)Z
showed 0.068. The omega(d) (resonance frequency of domain wall) and omega(s) (resonance frequency of spin components) of sol-gel and ceramic processed hexaferrites were estimated to be 10 and 1160 MHz and 17 and 1025 MHz, respectively. The frequency difference between omega(d) and omega(s) (1150 MHz) for the sol-gel processed hexaferrite AZD5363 order is wider than that (1008 MHz) for the ceramic processed hexaferrite. The permeabilities of sol-gel and ceramic processed hexaferrites were 6.91 and 9.23 at 200 MHz, respectively. Both permeabilities LDK378 mw are higher than 6.88 and 7.64 of corresponding
permittivities at the same frequency, respectively. It is found that the sol-gel processed and sintered Z-type hexaferrite meet desired low-loss tan delta and broadband for T-DMB antenna. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3073940]“
“Four novel cyclopentenone derivatives (1-4), characterising a cyclopentenone ring conjugated with a 1,8-dioxadecalin, were isolated from rare actinobacterial strain Actinoalloteichus nanshanensis sp. nov. NEAU 119. The structures of these compounds were elucidated on the basis of extensive spectroscopic analysis. Bioassays indicated that compounds 1-4 showed low cytotoxicities against human leukaemia cell line K562 and human renal carcinoma cell line ACHN. To the best of our knowledge, this is the first example of isolation of C-11 cyclopentenones from actinomycetes.”
“Polycrystalline Bi1/2Sr1/2FeO3 was synthesized by solid state reaction method. Powder x-ray diffraction pattern of the sample was fitted using a noncentrosymmetric rhombohedral crystal system of space group R3c. The sample was found to be free from any secondary phases.