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Ayako Osawa · SciRah

Researcher profile · Semantic Scholar

Ayako Osawa

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Ayako Osawa — researcher profile on SciRah

h-index: 14
Works: 35
Citations: 625

Most-cited papers

Aryl Polyenes, a Highly Abundant Class of Bacterial Natural Products, Are Functionally Related to Antioxidative Carotenoids
Tim A. Schöner, Sören Gassel, Ayako Osawa, Nicholas J. Tobias +5 more
2016ChemBioChem192 citations
Semantic Scholar
Construction of transplastomic lettuce (Lactuca sativa) dominantly producing astaxanthin fatty acid esters and detailed chemical analysis of generated carotenoids
H. Harada, T. Maoka, Ayako Osawa, Jun-ichiro Hattan +4 more
2014Transgenic research71 citations
Semantic Scholar
Characterization and antioxidative activities of rare C(50) carotenoids-sarcinaxanthin, sarcinaxanthin monoglucoside, and sarcinaxanthin diglucoside-obtained from Micrococcus yunnanensis.
Ayako Osawa, Y. Ishii, Nao Sasamura, Marie Morita +3 more
2010Journal of Oleo Science41 citations Open access
Semantic Scholar
Anti-oxidative, anti-tumor-promoting, and anti-carcinogenic activities of adonirubin and adonixanthin.
T. Maoka, H. Yasui, A. Ohmori, H. Tokuda +4 more
2013Journal of Oleo Science38 citations Open access
Semantic Scholar
Multiple transformation with the crtYB gene of the limiting enzyme increased carotenoid synthesis and generated novel derivatives in Xanthophyllomyces dendrorhous.
Nadine Ledetzky, Ayako Osawa, Kanoko Iki, Hendrik Pollmann +4 more
2014Archives of Biochemistry and Biophysics26 citations
Semantic Scholar
Biocatalytic synthesis of monocyclic arene-dihydrodiols and -diols by Escherichia coli cells expressing hybrid toluene/biphenyl dioxygenase and dihydrodiol dehydrogenase genes
K. Shindo, Ryoko Nakamura, Ayako Osawa, O. Kagami +3 more
200523 citations
Semantic Scholar
Hydroxy-3,4-dehydro-apo-8′-lycopene and methyl hydroxy-3,4-dehydro-apo-8′-lycopenoate, novel C30 carotenoids produced by a mutant of marine bacterium Halobacillus halophilus
Ayako Osawa, Y. Ishii, Nao Sasamura, Marie Morita +4 more
2010Journal of antibiotics (Tokyo. 1968)22 citations
Semantic Scholar
Catalytic asymmetric syntheses and biological activities of singly dehydroxylated 19-nor-1alpha,25-dihydroxyvitamin D(3) A-ring analogs in cancer cell differentiation and apoptosis.
Toshio Okano, K. Nakagawa, N. Kubodera, Keiichi Ozono +4 more
2000Chemistry and Biology20 citations Open access
Semantic Scholar
Conversion from arenes having a benzene ring to those having a picolinic acid by simple growing cell reactions using Escherichia coli that expressed the six bacterial genes involved in biphenyl catabolism.
K. Shindo, Ayako Osawa, Ryoko Nakamura, Yuki Kagiyama +4 more
2004Journal of the American Chemical Society17 citations Open access
Semantic Scholar
“Symmetry” in the synthesis of the a-ring of a vitamin D hybrid analogue with significant transactivation activity: A combinatorial sequence of regioselective propiolate-ene, catalytic enantioselective epoxidation and carbonyl-ene cyclization reactions@
K. Mikami, Ayako Osawa, A. Isaka, Eiji Sawa +6 more
199817 citations
Semantic Scholar
BINOL-Ti-Catalyzed Carbonyl-Ene Cyclization by Tuning the 6-Br-Ligand for the Synthesis of 2-Methyl-19-nor-22-oxa Vitamin D Analogue with Significant Differentiation Activity
K. Mikami, Yurika Koizumi, Ayako Osawa, M. Terada +3 more
199915 citations
Semantic Scholar
Singly dehydroxylated A-ring analogues of 19-nor-1alpha,25-dihydroxyvitamin D3 and 19-nor-22-oxa-1alpha,25-dihydroxyvitamin D3: novel vitamin D3 analogues with potent transcriptional activity but extremely low affinity for vitamin D receptor.
Toshio Okano, K. Nakagawa, N. Tsugawa, Keiichi Ozono +4 more
1998Biological and Pharmaceutical Bulletin15 citations Open access
Semantic Scholar
Isolation and identification of 4, 4'-diapolycopene-4,4'-dioic acid produced by Bacillus firmus GB1 and its singlet oxygen quenching activity.
Ayako Osawa, Kanoko Iki, G. Sandmann, K. Shindo
2013Journal of Oleo Science14 citations Open access
Semantic Scholar
Characterization and singlet oxygen quenching activity of (3R)-3-hydroxy-4-ketotorulene and (3R)-3-hydroxy-4-keto-γ-carotene isolated from the yeast Xanthophyllomyces dendrorhrous.
T. Maoka, T. Etoh, Ayako Osawa, K. Shindo
2012Journal of Oleo Science14 citations Open access
Semantic Scholar
Isolation of a Novel Carotenoid, OH-chlorobactene Glucoside Hexadecanoate, and Related Rare Carotenoids from Rhodococcus sp. CIP and Their Antioxidative Activities
Ayako Osawa, Asami Kasahara, Shoko Mastuoka, Sören Gassel +2 more
2011Bioscience, biotechnology and biochemistry14 citations Open access
Semantic Scholar
Production of caloxanthin 3'-β-D-glucoside, zeaxanthin 3,3'-β-D-diglucoside, and nostoxanthin in a recombinant Escherichia coli expressing system harboring seven carotenoid biosynthesis genes, including crtX and crtG.
Ayako Osawa, H. Harada, Seon-Kang Choi, N. Misawa +1 more
2011Phytochemistry12 citations
Semantic Scholar
Hydroxylations of substituted naphthalenes by Escherichia coli expressing aromatic dihydroxylating dioxygenase genes from polycyclic aromatic hydrocarbon-utilizing marine bacteria
K. Shindo, Ayako Osawa, Y. Kasai, Nobuko Iba +2 more
200712 citations
Semantic Scholar
4-[2-O-11Z-Octadecenoyl-β-glucopyranosyl]-4,4′-diapolycopene-4,4′-dioic acid and 4-[2-O-9Z-hexadecenoyl-β-glucopyranosyl]-4,4′-diapolycopene-4,4′-dioic acid: new C30-carotenoids produced by Methylobacterium
Ayako Osawa, Yui Kaseya, Nao Koue, J. Schrader +4 more
201511 citations
Semantic Scholar
(6E) and (6Z)-9′-Aporhodoxanthinone, novel carotenoids produced in zeaxanthin-synthesizing-Escherichia coli by redox stress
M. Takemura, T. Maoka, Ayako Osawa, Haruka Higashinaka +3 more
201510 citations
Semantic Scholar
3-β-Glucosyl-3′-β-quinovosyl zeaxanthin, a novel carotenoid glycoside synthesized by Escherichia coli cells expressing the Pantoea ananatis carotenoid biosynthesis gene cluster
Seon-Kang Choi, Ayako Osawa, T. Maoka, Jun-ichiro Hattan +5 more
2013Applied Microbiology and Biotechnology9 citations
Semantic Scholar
Synthesis of highly hydroxylated aromatics by evolved biphenyl dioxygenase and subsequent dihydrodiol dehydrogenase
K. Shindo, Yuko Shindo, T. Hasegawa, Ayako Osawa +3 more
2007Applied Microbiology and Biotechnology9 citations
Semantic Scholar
Antimicrobial Properties of a Copper/Silicone Composite Membrane Prepared Using a Two-Step Immersion Process in Iodine and Copper Sulfate Solutions
Junpei Takeshita, Shiho Aoki, Risei Wada, Ayako Osawa +1 more
2022Membranes5 citations Open access
Semantic Scholar
Changes of Carotenoids in Atlantic Salmon by Heat Cooking and the Singlet Oxygen Quenching Activities of the Artificially Produced Carotenoids
Ayako Osawa, Kumiko Ito, Nami Fukuo, T. Maoka +2 more
20145 citations
Semantic Scholar
Antimicrobial Activity and Transparency of Polyvinyl Butyral Paint Containing Heated Scallop-Shell Powder
Ryunosuke Akasaka, Ayako Osawa, Risei Wada, J. Sawai +1 more
2023Coatings4 citations Open access
Semantic Scholar
5-Hydroxy-5,6-dihydro-apo-4,4′-lycopene and methyl 5-hydroxy-5,6-dihydro-apo-4,4′-lycopenoate, novel C30-carotenoids produced by a mutant of marine bacterium Halobacillus halophilus
Ayako Osawa, Y. Ishii, Nao Sasamura, Marie Morita +4 more
2014Journal of antibiotics (Tokyo. 1968)4 citations Open access
Semantic Scholar
Hydroxy‐3,4‐dehydro‐apo‐8′‐lycopene and Methyl Hydroxy‐3,4‐dehydro‐apo‐8′‐lycopenoate, Novel C30 Carotenoids Produced by a Mutant of Marine Bacterium Halobacillus halophilus.
Ayako Osawa, Y. Ishii, Nao Sasamura, Marie Morita +4 more
20104 citations
Semantic Scholar
(6E) and (6Z)‐9′‐Aporhodoxanthinone, Novel Carotenoids Produced in Zeaxanthin‐Synthesizing‐Escherichia coli by Redox Stress.
M. Takemura, T. Maoka, Ayako Osawa, Haruka Higashinaka +3 more
20161 citations
Semantic Scholar
The Significance of Koei-bon “Shinran denne” in the declaration by Kakunyo “Sandai-denji (the Three generations)” ―In comparison of pictorial depictions in Ria-bon and Takada-bon―
Ayako Osawa
20141 citations Open access
Semantic Scholar
Popularity of Shinran in the Taisho period and the images of Shinran
Ayako Osawa
2019Journal of Research Society of Buddhism and Cultural Heritage0 citations Open access
Semantic Scholar
Activities and Overall Spatial Phenomenon on Kanda Riverside Space in Tokyo Spatial Compositions and Activities along Middle-Small Size River in Urban Area (2)
Yuxuan Su, 絢子大澤, Ayako Osawa, 聖那須 +1 more
20180 citations
Semantic Scholar
glucopyranosyl ]-4 , 4 0-diapolycopene-4 , 4 0-dioic acid : new C 30-carotenoids produced by Methylobacterium
Ayako Osawa, Yui Kaseya, Nao Koue, J. Schrader +4 more
20150 citations
Semantic Scholar
Construction of transplastomic lettuce (Lactuca sativa) dominantly producing astaxanthin fatty acid esters and detailed chemical analysis of generated carotenoids
H. Harada, T. Maoka, Ayako Osawa, Jun-ichiro Hattan +4 more
2013Transgenic research0 citations
Semantic Scholar
Carotenoids in Anomura
Ayako Osawa, T. Maoka, K. Shindo
20120 citations
Semantic Scholar
“Symmetry” in the Synthesis of the A‐Ring of a Vitamin D Hybrid Analogue with Significant Transactivation Activity: A Combinatorial Sequence of Regioselective Propiolate‐Ene, Catalytic Enantioselective Epoxidation and Carbonyl‐Ene Cyclization Reactions.
K. Mikami, Ayako Osawa, A. Isaka, Eiji Sawa +6 more
19980 citations
Semantic Scholar
Asymmetric Catalysts for Polymerization.
K. Mikami, M. Terada, Ayako Osawa
19970 citations Open access
Semantic Scholar

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K. Shindo×24
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K. Shindo — researcher profile on SciRah
T. Maoka×10
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T. Maoka — researcher profile on SciRah
N. Misawa×10
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N. Misawa — researcher profile on SciRah
G. Sandmann×9
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K. Nakagawa — researcher profile on SciRah

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Y. Ishii — researcher profile on SciRah

Nao Sasamura×4

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Marie Morita×4

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Marie Morita — researcher profile on SciRah

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N. Kubodera — researcher profile on SciRah

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K. Mikami — researcher profile on SciRah

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Sören Gassel×3

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Sören Gassel — researcher profile on SciRah