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Production of Rare Monosaccharides Using Microorganisms and Their Enzymes
Izumori, Ken,Bhuiyan, Shakhawat Hossain The Korean Society of Food Science and Nutrition 1997 식품산업과 영양 Vol.2 No.1
Microbial of enzymatical methods are suitable for production of rare monosaccharides. Using oxidation and reduction ability of Microorganisms, various rare ketoses and polyols can be produced, for example D-tagatose from galagtitol by Enterobacter agglomerans strain 221e. L-tagatose from galactitol by Klebsiella pheumonias strain 40b, L-psicose from allitol by Gluconobacter frateurii IFO 3254, D-talitol from d-tagatose by Aureobasidium pullulans strain 113B, allitol from D-psicose by Enterobacter agglomerans strain 221e and so on. We can produce various rare aldoses and ketoses using aldose isomerases, for example L-galactose from L-tagatose by D-arabnose isomerase, and L-ribose from L-ribulose by L-isomerase, and so on. D-Tagatose 3-epimerase of Pseudomonas sp. ST-24 is very useful for preparationof various rare ketoses, for example D-psicose from D-fructose, D-sorbose from D-tagatose, L-fructose, from L-psicose and so on. Using polyol dehydrogenases, aldose isomerases and D-tagatose 3-epimerase, we can design the suitable for production of a certain rare monosaccharide from a suitable substrate.
[특집 : 새로운 감미료의 산업적 이용과 전망] Production of Rare Monosaccharides Using Microorganisms and Their Enzymes
Ken Izumori,Shakhawat Hossain Bhuiyan 한국식품영양과학회 1997 식품산업과 영양 Vol.2 No.1
Microbial or enzymatical methods are suitable for production of rare monosaccharides. Using oxidation and reduction ability of microorganisms, various rare ketoses and polyols can be produced, for example D-tagatose from galactitol by Enterobacter agglomerans strain 221e, L -tagatose from galactitol by Klebsiella pneumoniae strain 40b, L-psicose from allitol by Gluconobacter frateurii IFO 3254, D-talitol from D-tagatose by Aureobasidium pullulans strain 113B, allitol from D-psicose by Enterobacter agglomerans strain 221e and so on. We can produce various rare aldoses and ketoses using aldose isomerases, for example L-galactose from L-tagatose by D-arabinose isomerase, and L-ribose from L-ribulose by L-ribose isomerase, and so on. D-Tagatose 3-epimerase of Pseudomonas sp. ST-24 is very useful for preparation of various rare ketoses, for example D-psicose from D-fructose, D-sorbose from D-tagatose, L-fructose from L-psicose and so on. Using polyol dehydrogenases, aldose isomerases and D-tagatose 3-epimerase, we can design the suitable pathway for production of a certain rare monosaccharide from a suitable substrate.
Takayoshi Uematsu,Ayumi Izumori,문우경 대한초음파의학회 2023 ULTRASONOGRAPHY Vol.42 No.4
Screening mammography programs have been implemented in numerous Western countries with the aim of reducing breast cancer mortality. However, despite over 20 years of population-based screening mammography, the mortality rates in Japan and Korea continue to rise. This may be due to the fact that screening mammography is not as effective for Japanese and Korean women, who often have dense breasts. This density decreases the sensitivity of mammography due to a masking effect. Therefore, the early detection of small invasive cancers requires more than just mammography, particularly for women in their 40s. This review discusses the limitations and challenges of screening mammography, as well as the keys to successful population-based breast cancer screening in Japan and Korea. This includes a focus on breast ultrasonography techniques, which are based on histopathologic anatomical knowledge, and personalized screening strategies that are based on risk assessments measured by glandular tissue components.