The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1999
Filed:
Jun. 24, 1997
Toshio Miyake, Okayama, JP;
Takashi Yumoto, Ichihara, JP;
Abstract
An enzyme-treated hesperidin, comprising alpha-glucosyl hesperidin, hesperidin and beta-monoglucosyl hesperetin, wherein the content of hesperidin is 0.1 part or less by weight; and that of beta-monoglucosyl hesperetin, 0.1 to 0.5 part by weight, on the basis of 1 part by weight of alpha-glucosyl hesperidin. The present invention also provides a process to produce enzyme-treated hesperidin, which comprises subjecting a solution containing alpha-glucosyl hesperidin and intact hesperidin to alpha-L-rhamnosidase to convert the intact hesperidin into beta-monoglucosyl hesperetin. The enzyme-treated hesperidin, which is excellent in water solubility and is free from crystal precipitation (clouding) even if stored for a prolonged period of time, can be produced from a material containing alpha-glucosylhesperidin and hesperidin by conducting the above simple treatment of material. The present invention further provides a method of using the enzyme-treated hesperidin. The enzyme-treated hesperidin can be used in the prevention of clouding of a canned tangerine and prevention of fading of natural coloring matter.