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Determination of 1-deoxynojirimycin in mulberry leaves using hydrophilic interaction chromatography with evaporative light scattering detection.
- Toshiyuki Kimura, K. Nakagawa, +5 authors T. Miyazawa
- Medicine, ChemistryJournal of agricultural and food chemistry
- 19 February 2004
This method is sufficiently sensitive for determining 1-deoxynojirimycin in mulberry leaves and other related products.
Content of Flavonol Glucosides and Some Properties of Enzymes Metabolizing the Glucosides in Onion (Flavonoid in Fruits and Vegetables, Part II)
The contents of flavonol glucosides in yellow, red and white onions harvested in Hokkaido were measured. Seven varieties of yellow onion averaged 16.8mg/100g of quercetin-3, 4'-di-O-β-glucoside,…
Evaluation of Antioxidant Activity of Vegetable Extracts and Determination of Some Active Compounds
リノール酸の自動酸化物がβ-カロチンを退色させることを利用し,その退色の防止活性を指標とした抗酸化性の測定法を用いて, 43種の野菜の80%メタノール抽出液の抗酸化活性を測定し,以下の結果を得た.(1) BHAの抗酸化活性と比較し検討したところ,シュンギクやショウガ,アスパラガス等13種は, BHAが生鮮重100g当たり25mg以上含有されていることに相当する程の活性を示すことが分かった.…
A specific LC/ESI-MS/MS method for determination of 25-hydroxyvitamin D3 in neonatal dried blood spots containing a potential interfering metabolite, 3-epi-25-hydroxyvitamin D3.
- T. Higashi, Masahiro Suzuki, +4 authors T. Toyo’oka
- Chemistry, MedicineJournal of separation science
- 1 April 2011
The developed method enabled specific quantification of 25(OH)D(3) in neonatal DBSs and detection of vitamin D deficiency without interference from 3-epi-25-hydroxyvitamin D(3).
Elevation of Intracellular cAMP Levels by Dominant Active Heterotrimeric G Protein Alpha Subunits ScGP-A and ScGP-C in Homobasidiomycete, Schizophyllum commune
- K. Yamagishi, Toshiyuki Kimura, Masahiro Suzuki, H. Shinmoto, K. Yamaki
- Biology, MedicineBioscience, biotechnology, and biochemistry
- 1 January 2004
The data suggest that the heterotrimeric G protein alpha subunits are involved in the mechanism of cAMP regulation, and that RAS modulates another signal-transduction pathway regulating cell growth and differentiation.
Extraction and identification of antioxidant components from Artemisia capillaris herba
The antioxidant activities of various organic solvent extracts from Artemisia capillaris herba were investigated. The results indicated that methanol extracts of Artemisia capillaris herba possessed…
Flavonoid in Fruits and Vegetables Part I. Isolation of Flavonoid-Glycosides in Onion and Identification by Chemical Synthesis of the Glycosides
Omaezallene from red alga Laurencia sp.: structure elucidation, total synthesis, and antifouling activity.
The relative and absolute configurations of natural omaezallenes were unambiguously established through total synthesis as well as the antifouling activities and ecotoxicity of omazallenes.
Structure determination of a siderophore peucechelin from Streptomyces peucetius
- S. Kodani, H. Komaki, Masahiro Suzuki, Fumiya Kobayakawa, H. Hemmi
- Biology, MedicineBioMetals
- 18 June 2015
Comparison of the biosynthetic genes of structurally related siderophores peucechelin and foroxymithine was accomplished in discussion because the similar genes were found in the genome data of S. venezuelae and S. purpureus.