Maltohexaose and maltoheptaose-forming amylase, and its preparat

Details Maltohexaose and maltoheptaose-forming amylase, and its preparat Maltohexaose and maltoheptaose-forming amylase, and its preparat

1997-05-01

2000-08-22

Prats, Francisco

Drug, bio-affecting and body treating compositions

Designated organic nonactive ingredient containing other...

Carbohydrate or lignin, or derivative

514 54, 514 60, 514777, 435101, 426658, 536103, 5361231, A61K 4736, C12P 1904

Patent

active

061073482

ABSTRACT:
Disclosed is a novel amylase which mainly forms maltohexaose and maltoheptaose when acts on starch, but does not substantially hydrolyze maltohexaose and a lower molecular oligosaccharide than maltohexaose. The amylase can be prepared from microorganisms of the genus Alcaligenes, and has a relatively-high optimum temperature and thermal stability, as well as a relatively-wide range of optimum pH and pH stability. By using the amylase, saccharide compositions rich in maltohexaose and/or maltoheptaose or those rich in maltohexaitol and/or maltoheptaitol can be readily prepared in an industrial scale, and the saccharide compositions thus obtained can be used in a variety of food products, cosmetics and pharmaceuticals.

REFERENCES:
Chemical Abstracts 119(3):27066p, 1993.
Chemical Abstracts 119(5):48070a, 1993.
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Kainuma et al, "Isolation and Action Pattern of Maltohexaose Producing Amylase from Aerobacter Aerogenes"; FEBS Letter, 26:281-285 (1972).
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Maeda et al, "Digestion of Barley Starch Granules by the Combined Action of alpha-and beta-Amylases Purified fro mBarley and Barley Malt"; Agricultural and Biological Chemistry, 42:259-267 (1978).
Takasaki, Y., "Production of Maltohexaose by alpha-Amylase from Bacillus circulans G-6", Agricultural and Biological Chemistry, 46:1539-1547 (1982).
Taniguchi et al, "Enzymic Digestion of Potato Starch Granules"; J. Jap. Soc. Starch Science, 29:107-116 (1982).
ATCC Catalogue of Bacteria & Bacteriophates, 17th Ed., pp. 13-14 (1989).
R.-Q. He et al., "An asynchronous unfolding among molecular different regions of lobster D-glyceraldehyde-3-phosphate dehydrogense and maltotetrsose-forming amylase from an Alcaligenes sp. during guanidine denaturation", Biochimica et Biophysica Acta, vol. 1163, pp. 315-320, 1993 .

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