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Characterization of vitamin B12 compounds from traditional fermented Japanese seafoods
This study identified vitamin B12 compounds in traditional fermented Japanese seafoods, such as heshiko made with a mackerel, kusaya made with a flying fish, Akazukuri-shiokara made with a squid, and funazushi ma...
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Article
Characterization of vitamin B12 compounds from commercially available fish roe products
Although fish roes (or the egg-laden ovary) are seafood products with high nutritional value and are considered abundant in vitamins including vitamin B12, nevertheless, the detailed properties of vitamin B12 hav...
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Chapter
Seaweeds as a Source of Vitamin B12
The usual dietary sources of vitamin B12 are animal-derived foods, such as milk, meat, fish, and shellfish. Vitamin B12 is well known as the unusual vitamin that is absent from plant-derived foods. Thus, vegetari...
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Article
Determination and characterization of vitamin B12 in the muscles and head innards of edible shrimp
We determined the vitamin B12 content in both the muscles and head innards of various shrimp species [Argis lar (Owen, 1839); Togezako shrimp, Argis toyamaensis (Yokoya, 1933); Pandalopsis japonica, Balss, 1914;
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Article
Microstructure Evolution in Cu-Pd-Ag Alloy Wires During Heat Treatment
Cu-Pd-Ag alloy wires with a relatively low Ag content are used widely in electronics. This alloy is usually subjected to age hardening to increase its strength. However, the alloy microstructure that results w...
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Article
Characterization of vitamin B12 compounds from marine foods
Vitamin B12 is synthesized by only certain bacteria and archaea but not by animals or plants. In marine environments, bacterial vitamin B12 is transferred and concentrated into fish and shellfish bodies by plankt...
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Chapter
Biochemistry and Physiology of Vitamins in Euglena
Euglena gracilis Z requires vitamins B1 and B12 for growth. It takes up and accumulates large amounts of these exogenous vitamins through energy-dependent active transport systems. Except for these essential vit...
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Article
Determination and characterization of vitamin B12 compounds in edible sea snails, ivory shell Babylonia japonica and turban shell Turdo Batillus cornutus
In this study, we characterized and quantified vitamin B12 compounds in popular edible snails Babylonia japonica and Turdo Batillus cornutus using a microbiological assay based on Lactobacillus delbrueckii subsp....
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Article
Performance of HSC columns under severe cyclic loading
Experimental and analytical results of seismic investigation of high strength reinforced concrete columns performance is summarized in this paper. Twelve cantilever columns with different sizes and concrete co...
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Article
Identification of vitamin B12 and pseudovitamin B12 from various edible shellfish using liquid chromatography–electrospray ionization/tandem mass spectrometry
In this study, the vitamin B12 contents were analyzed in the edible portions of various shellfish (bivalves and snails). High vitamin B12 contents (30.5–53.3 μg/100 g wet weight) were detected in mussels, surf cl...
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Article
Miniaturized HPTLC of Vitamin B12 Compounds in Foods
High-performance thin-layer chromatography (HPTLC) is a separation technique commonly used to identify and quantify compounds in chemical mixtures. Preliminary experiments indicated that Lichrospher silica gel...
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Article
Characterization of vitamin B12 compounds from the brackish-water bivalve Corbicula japonica
In Lake Togo (Tottori prefecture, Japan), the vitamin B12 content of the brackish-water bivalve Corbicula japonica remained high (17.3–22.5 μg/100 g wet weight of the edible portion) throughout the year, except d...
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Article
Impact of EBAS annealing on sheet resistance reduction for Al-implanted 4H-SiC(0001)
In this paper, we demonstrate that high temperature and short time EBAS annealing is effective to obtain low sheet resistance without surface roughening in heavily Al-implanted 4H-SiC (0001) samples (Al concen...
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Article
Characterization of methylmalonyl-CoA mutase involved in the propionate photoassimilation of Euglena gracilis Z
Significant accumulation of the methylmalonyl-CoA mutase apoenzyme was observed in the photosynthetic flagellate Euglena gracilis Z at the end of the logarithmic growth phase. The apoenzyme was converted to a hol...
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Article
Purification and characterization of homodimeric methylmalonyl-CoA mutase from Sinorhizobium meliloti
High activity (>60 munit/mg protein) of 5′-deoxyadenosylcobalamin-dependent methylmalonyl-CoA mutase (EC 5.4.99.2) was constantly found during growth of a strain of the root-nodule-forming bacterium Sinorhizobium...
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