Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo

Seibutsu Kagaku Kenkyujo

Kabushiki Kaisha Hayashibara

Takashi Yumoto

Toshio Miyake

Toshi Miyake

Taketoshi Kido

Yoshihisa Iida

An isoflavone composition which contains an &#x3b1;-glucosyl isoflavone and isoflavone and optionally an isoflavone aglycone, wherein the ratio of the amount of aglycone in the isoflavone and the isoflavone aglycone in total to the amount of aglycone in the &#x3b1;-glucosyl isoflavone [(the amount of aglycone in &#x3b1;-glucosyl isoflavone)/(the amount of aglycone in isoflavone plus the amount of isoflavone aglycone)] is at least 2.5/1; a water-soluble isoflavone composition which contains an &#x3b1;-glucosyl isoflavone, isoflavone and isoflavone aglycone, wherein the ratio of the amount of isoflavone aglycone in the composition is 0.01 to 20% to the total amount of aglycone in the composition; and beverages, cosmetics, pharmaceuticals, or feeds, which contain any one of the above compositions.

Water-soluble isoflavone composition, process for producing the same, and use thereof

Process for producing .alpha.-monoglucosyl hesperidin-rich substance

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.

Enzyme-treated hesperidin, process for producing the same and method of

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Ichihara, Japan

Takashi Yumoto