摘要:
Optically active .beta.-halolactic acids can be produced by contacting an .alpha.,.beta.-dihalopropionic acid with 2-halo acid dehalogenase. When the pH of the reaction system is above 9, this process gives optically active glycidic acid. Treatment of the optically active .beta.-halolactic acid thus obtained with an alkali also gives optically active glycidic acid.
摘要:
A method of producing a growth promoting factor for Bifidobacterium species from lactose which comprises contacting lactose with resting cells of a lactose-utilizing yeast strain having activity to rearrange lactose to galacto-oligosaccharides.
摘要:
An angiotensin converting enzyme inhibitor containing Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg (SEQ ID No: 1) Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr (SEQ ID No: 2) or Ala-Tyr-Ile-Ala-Ser-Lys-Gly-Leu (SEQ ID No: 3) as an active component.
摘要:
A slow-releasing composition of a platinum-containing anticancer agent comprising a platinum-containing anticancer agent bound to deacetylated chitin. The release of the platinum-containing anticancer agent is sustained for a prolonged duration of several months, thereby minimizing undesirable side effects of the platinum-containing anticancer agent.
摘要:
A method of preparing an angiotensin converting enzyme inhibitor having the amino acid sequence selected from the group consisting of:Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg (SEQ ID No: 1),Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr (SEQ ID No: 2) andAla-Tyr-Ile-Ala-Ser-Lys-Gly-Leu (SEQ ID No: 3); which comprises the steps of:(a) disrupting bacteria to obtain a cell extract, wherein the disruption is at least one of mechanical and chemical disruption;(b) exposing said cell extract to an acid mixture comprising acetic acid and hydrochloric acid, wherein said acid mixture comprises acetic acid in a concentration of 0.01 to 10M and hydrochloric acid in a concentration of 1 to 100 mM, to produce an acid hydrolysate; and(c) purifying from said acid hydrolysate a peptide having the amino acid sequence selected from the group consisting of:Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg (SEQ ID No: 1),Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr (SEQ ID No: 2) andAla-Tyr-Ile-Ala-Ser-Lys-Gly-Leu (SEQ ID No: 3).
摘要翻译:一种制备具有选自Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg(SEQ ID No:1),Gly- Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr(SEQ ID No:2)和Ala-Tyr-Ile-Ala-Ser-Lys-Gly-Leu(SEQ ID No:3); 其包括以下步骤:(a)破坏细菌以获得细胞提取物,其中所述破坏是机械和化学破坏中的至少一种; (b)将所述细胞提取物暴露于含有乙酸和盐酸的酸混合物中,其中所述酸混合物包含浓度为0.01至10M的乙酸和浓度为1至100mM的盐酸,以产生酸水解产物; 和(c)从所述酸水解产物中纯化具有选自Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg(SEQ ID No:1)的氨基酸序列的肽, Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr(SEQ ID No:2)和Ala-Tyr-Ile-Ala-Ser-Lys-Gly-Leu(SEQ ID No:3)。
摘要:
A melt-processable copolyamide prepared from diamines and dicarboxylic acids by a melt-polymerization process, wherein said copolyamide contains from about 1 to 20 mol % of an aromatic amide unit having the formula ##STR1## wherein X and Y are aromatic units with extended bonds, such as 1,4-phenylene group. This copolyamide provides fiber with higher stiffness.
摘要:
This invention is a method of manufacturing heat-stable polyesters, characterized in that phosphonic acid compounds are added, when heat-stable polyesters with decreased terminal carboxyl groups are manufactured by reacting polyesters and cyclic carbonate compounds in the presence of an alkali halide compound catalyst.