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Start Over Author "Shoji Imamoto" Journal agricultural and biological chemistry
4 results on '"Shoji Imamoto"'

2. A Growth Factor for Malo-lactic Fermentation Bacteria

Author

Shoji Imamoto, Hajime Yoshizumi, and Teruo Amachi

Subjects
biology, Chemistry, Stereochemistry, Growth factor, medicine.medical_treatment, Biological activity, biology.organism_classification, General Biochemistry, Genetics and Molecular Biology, carbohydrates (lipids), NMR spectra database, Residue (chemistry), medicine, Malolactic fermentation, Moiety, Fermentation, General Agricultural and Biological Sciences, Bacteria
Abstract

A growth factor (TJF) for a malo-lactic fermentation bacterium has been isolated from tomato juice, and found to be a β-glucoside. The NMR spectra of TJF and its acetate revealed that the glucosyl residue linked to the hydroxyl group at C-2′ or C-4′ of d- or l-pantothenic acid moiety. Then, 2′-O-(β-d-glucopyranosyl)-dl-pantothenic acid (I), 4′-O-(β-d-glucopyranosyl)-dl-pantothenic acid (II) and 4′-O-(β-d-glucopyranosyl)-d(R)-pantothenic acid (II-a) were synthesized, and Il-a and 4′-O-(β-d-glucopyranosyl)-l-pantothenic acid (II-b) were obtained by the optical resolution of the acetate of II. Among the above compounds, II-a was identical with natural TJF regarding to the biological activity, NMR and ORD spectra, and thin-layer chromatography.

Published
1971

3. A Growth Factor for Malo-lactic Fermentation Bacteria

Author

Teruo Amachi, Shoji Imamoto, and Hajime Yoshizumi

Subjects
biology, Chemistry, Stereochemistry, Biological activity, biology.organism_classification, General Biochemistry, Genetics and Molecular Biology, carbohydrates (lipids), NMR spectra database, Residue (chemistry), Pantothenic acid, Malolactic fermentation, Moiety, Fermentation, General Agricultural and Biological Sciences, Bacteria
Abstract

A growth factor (TJF) for a malo-lactic fermentation bacterium has been isolated from tomato juice, and found to be a β-glucoside. The NMR spectra of TJF and its acetate revealed that the glucosyl residue linked to the hydroxyl group at C-2′ or C-4′ of d- or l-pantothenic acid moiety. Then, 2′-O-(β-d-glucopyranosyl)-dl-pantothenic acid (I), 4′-O-(β-d-glucopyranosyl)-dl-pantothenic acid (II) and 4′-O-(β-d-glucopyranosyl)-d(R)-pantothenic acid (II-a) were synthesized, and Il-a and 4′-O-(β-d-glucopyranosyl)-l-pantothenic acid (II-b) were obtained by the optical resolution of the acetate of II. Among the above compounds, II-a was identical with natural TJF regarding to the biological activity, NMR and ORD spectra, and thin-layer chromatography.

Published
1971

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