摘要:
Problem: To provide a novel polyol oxidase. Solution: A polyol oxidase, which is derived from a microorganism belonging to the genus Penicillium and is specified by the properties listed in the following (a) to (e): (a) it has a stable pH of 6.0 or higher and an optimum reaction pH of from 7.0 to 9.0; (b) it has an operating temperature of 50°C or lower and an optimum reaction temperature of 40°C; (c) it has a molecular weight of about 113 kDa; (d) it specifically recognizes the structure of a polyol in which the OH groups at positions 2 and 3 are in the L-erythro configuration and reacts with the polyol, but cannot recognize the structure of a polyol in which the OH group at position 4 is in the L-ribo configuration and does not react with the polyol; and (e) it has substrate specificity for D-arabitol, erythritol, D-mannitol, and D-sorbitol, which are listed in descending order of specificity.
摘要:
There are provided a highly safe epimerase usable in food industry, and a method for producing a ketose. The epimerase is a ketose 3-epimerase obtainable from a microorganism of the genus Arthrobacter , and having the amino acid sequence represented by SEQ ID NO: 1 of the Sequence Listing, and (1) substrate specificity whereby a D- or L-ketose is epimerized at position 3 to produce a corresponding D- or L-ketose, and (2) the highest substrate specificity for D-fructose and D-psicose among D- and L-ketoses. The ketose 3-epimerase is also represented by SEQ ID NO: 3 or SEQ ID NO: 4 of the Sequence Listing, and epimerizes a D- or L-ketose at position 3 to produce a corresponding D- or L-ketose.
摘要:
A lifespan extending agent that is safe for animals, and can easily be ingested in a form that resembles foods. A lifespan extending method is also disclosed. In the lifespan extending agent, a rare sugar usable as a sweetener is contained as an active ingredient.
摘要:
There are provided a highly safe epimerase usable in food industry, and a method for producing a ketose. The epimerase is a ketose 3-epimerase obtainable from a microorganism of the genus Arthrobacter , and having the amino acid sequence represented by SEQ ID NO: 1 of the Sequence Listing, and (1) substrate specificity whereby a D- or L-ketose is epimerized at position 3 to produce a corresponding D- or L-ketose, and (2) the highest substrate specificity for D-fructose and D-psicose among D- and L-ketoses. The ketose 3-epimerase is also represented by SEQ ID NO: 3 or SEQ ID NO: 4 of the Sequence Listing, and epimerizes a D- or L-ketose at position 3 to produce a corresponding D- or L-ketose.
摘要翻译:提供了可用于食品工业的高度安全的差向异构酶,以及生产酮糖的方法。 差向异构酶是从节杆菌属的微生物获得并具有由序列表的SEQ ID NO:1表示的氨基酸序列的酮糖3-差向异构酶,和(1)底物特异性,其中D-或L-酮糖是 在位置3差向异构化以产生相应的D-或L-酮糖,和(2)D和L-酮糖之中D-果糖和D-灵芝蛋白的最高底物特异性。 酮基3-差向异构酶也由序列表的SEQ ID NO:3或SEQ ID NO:4表示,并且在3位差异化D-或L-酮糖以产生相应的D-或L-酮糖。
摘要:
A lifespan extending agent that is safe for animals, and can easily be ingested in a form that resembles foods. A lifespan extending method is also disclosed. In the lifespan extending agent, a rare sugar usable as a sweetener is contained as an active ingredient.
摘要:
Task: There are provided a highly safe epimerase usable in food industry, and a method for producing a ketose. Resolution: The epimerase is a ketose 3-epimerase obtainable from a microorganism of the genus Arthrobacter, and having (1) substrate specificity whereby a D- or L-ketose is epimerized at position 3 to produce a corresponding D- or L-ketose, and (2) the highest substrate specificity for D-fructose and D-psicose among D- and L-ketoses.
摘要:
Problem: To develop a method for producing a novel sweetener containing glucose, fructose, and psicose, which is produced from glucose liquid sugar using an isomerase and an epimerase; use of the novel sweetener as a food or drink material; and a novel sweetener capable of preventing obesity caused by the intake thereof. Means of Resolution: An isomerase and an epimerase are allowed to act on glucose liquid sugar produced in a glucose liquid sugar production plant to thereby produce D-psicose, thereby providing a novel sweetener (product) that maintains the degree and quality of sweetness of a glucose-fructose mixed solution and never causes obesity, a method for producing the same, and use of the same.