摘要:
There is provided a process for industrial production of simple 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone from low molecular mixtures derived from plant components such as vanillin, vanillic acid and protocatechuic acid, via a multistage enzyme reaction. A recombinant plasmid containing a vanillate demethylase gene (vanAB genes), benzaldehyde dehydrogenase gene (ligV gene) and protocatechuate 3,4-dioxygenase gene (pcaHG genes); transformants incorporating the plasmid; and a process for production of 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone characterized by culturing the transformants in the presence of vanillin, vanillic acid, protocatechuic acid or a mixture of two or more thereof.
摘要:
There is provided a process for industrial production of simple 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone from low molecular mixtures derived from plant components such as vanillin, vanillic acid and protocatechuic acid, via a multistage enzyme reaction.A recombinant plasmid containing a vanillate demethylase gene (vanAB genes), benzaldehyde dehydrogenase gene (ligV gene) and protocatechuate 3,4-dioxygenase gene (pcaHG genes); transformants incorporating the plasmid; and a process for production of 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone characterized by culturing the transformants in the presence of vanillin, vanillic acid, protocatechuic acid or a mixture of two or more thereof.
摘要:
Industrial-scale fermentative production of 3-carboxy-cis,cis-muconic acid from terephthalic acid. Also, a protocatechuate 4,5-ring-cleaving enzyme gene-disrupted strain in which the gene coding for (a) the amino acid sequence set forth in SEQ ID NO: 1 or 3, or (b) the amino acid sequence set forth in SEQ ID NO: 1 or 3 which has a deletion, substitution, addition and/or insertion of one or more amino acids and exhibits protocatechuate 4,5-ring cleavage activity, present in the chromosomal DNA of microbial cells, has been disrupted; recombinant plasmids comprising the Tph gene and protocatechuate 3,4-dioxygenase gene; transformants obtained by introducing the recombinant plasmids into the disrupted strain; and a process for production of 3-carboxy-cis,cis-muconic acid and/or 3-carboxymuconolactone characterized by culturing the transformants in the presence of terephthalic acid.
摘要翻译:从对苯二甲酸工业规模发酵生产3-羧基 - 顺式,顺式 - 粘康酸。 此外,原儿茶素4,5环切割酶基因破坏的菌株,其中编码(a)SEQ ID NO:1或3所示的氨基酸序列的基因,或(b)阐述的氨基酸序列 在具有一个或多个氨基酸的缺失,取代,添加和/或插入并且表现出存在于微生物细胞的染色体DNA中的原儿茶素4,5-环切割活性的SEQ ID NO:1或3已被破坏; 包含Tph基因和原儿茶素3,4-双加氧酶基因的重组质粒; 通过将重组质粒导入破碎的菌株获得的转化体; 以及3-羧基 - 顺式,顺式 - 粘酸和/或3-羧基粘土内酯的制备方法,其特征在于在对苯二甲酸存在下培养转化体。
摘要:
The invention provides biodegradable polyesters, polyurethanes, comprising 3-carboxymuconolactone as a structural unit, 3-carboxymuconolactone esters and a process for their production.Polyesters comprising a repeating unit represented by the following formula (I): [wherein R represents a hydrocarbon-based divalent residue which, in the structure, optionally contains a heteroatom without an active hydrogen], polyurethanes comprising the polyester structure; 3-carboxymuconolactone esters; and a process for their production.
摘要:
To provide an industrial purification method of PDC obtained by fermentative production.A method of purifying 2-pyrone-4,6-dicarboxylic acid which comprises including a salt of monovalent to tetravalent cations in a fermentation liquid containing microbially-produced 2-pyrone-4,6-dicarboxylic acid; and a method of purifying 2-pyrone-4,6-dicarboxylic acid which method comprises extracting 2-pyrone-4,6-dicarboxylic acid from a fermentation liquid containing microbially-produced 2-pyrone-4,6-dicarboxylic acid without forming 2-pyrone-4,6-dicarboxylate.
摘要:
A polyester containing a biomass-derived material in a repeating unit structure and having all of sufficient mechanical strength, easy mold processability into a molded product such as fiber or film, and biodegradability, is provided.A PDC-L-lactic acid copolyester represented by the following formula: —[R1—PDC]x—[OCH(CH3)CO]1-x— (I) [wherein PDC is a dicarboxylic acid residue represented by the following formula (II): R1 is selected from —O(CH2)nO—, —O(CH2CH2O)m— and —O[CH(CH3)CH2O]m—, where n represents an integer of 3 to 6 and m represents an integer of 1 to 4; and is 0.005≦x≦0.2 when n≦4 or m≦2, and is 0.005≦x≦0.4 in other cases]; and a molded product containing the PDC-L-lactic acid copolyester.
摘要:
An antimicrobial agent comprising, as an active component, compounds represented by the following formula [wherein, R1 and R2 each independently represent H or an alkali metal atom.]; and a microbicidal agent comprising, as an active component, compounds represented by formula (I): [wherein, R1 and R2 each independently represent H or an alkali metal atom.], wherein they have high safety and little impact on the environment.
摘要:
A polyester having repeating units represented by formula (1): wherein R1 represents a divalent hydrocarbon residue which in its structure may contain a heteroatom having no active hydrogen. The polyester has a high refractive index and biodegradability, and is useful as a material for fibers and plastics.
摘要:
A polyamide having repeating units represented by formula (1), wherein R1 represents a divalent hydrocarbon residue optionally having in the structure a heteroatom having no active hydrogen. The polyamide has a high refractive index, is biodegradable, and is useful as a material for fibers and plastics.
摘要:
Disclosed is a flame-retardant resin processed article having excellent flame retardance while being free from bleed-out. Specifically, a resin composition containing a cyclic phosphorus compound flame retardant, a hydrophilic silica powder having an average particle diameter of not more than 15 m, and a resin with the total content of the cyclic phosphorus compound and the hydrophilic silica powder being 10-45% by mass is molded into a certain shape or formed into a coating film. The hydrophilic silica powder is preferably composed of porous structures having a pore volume of not more than 1.8 ml/g and a pH of 4-7. More preferably, the hydrophilic silica powder has an oil absorption of not less than 50 ml/100 g in accordance with JIS K5101.