Abstract:
An efficient production method for obtaining a reduced coenzyme Q10 Form II-type crystal having a stable crystal form is disclosed. The production method includes adding a seed crystal of a Form II-type crystal to a solution including ethanol and reduced coenzyme Q10; and precipitating a Form II-type crystal, wherein a dissolved concentration Ci of reduced coenzyme Q10 before adding the seed crystal is equal to or more than a saturated concentration of a Form II-type crystal and less than a saturated concentration of a Form I-type crystal at a temperature Ti when adding the seed crystal. The crystal precipitation step may include controlling a temperature Tp of the solution so that a dissolved concentration Cp of reduced coenzyme Q10 is equal to or more than the saturated concentration of the Form II-type crystal and less than the saturated concentration of the Form I-type crystal.
Abstract:
The present description discloses a preferred solution for controlling oxidation of QH without any need for formulation of reduced coenzyme Q10 (QH). One or more embodiments of the present invention relate to a method for storing reduced coenzyme Q10 (QH) or a method for controlling oxidation of QH, the method(s) including storing a composition containing a reduced coenzyme Q10 (QH) and having a water activity at 25° C. of 0.50 or more. One or more other embodiments of the present invention relate to a composition containing QH and having a water activity at 25° C. of 0.50 or more.
Abstract:
With respect to reduced coenzyme Q10, there has been no report about the presence of crystal polymorphism, and it has been considered that a conventionally obtained crystal form is only one form. The present invention relates to a reduced coenzyme Q10 crystal having an endothermic peak indicating melting at 54±2° C. during temperature rise at a rate of 5° C./min by differential scanning calorimetry (DSC), and/or to a reduced coenzyme Q10 crystal showing characteristic peaks at diffraction angles (2θ±0.2°) of 11.5°, 18.2°, 19.3°, 22.3°, 23.0° and 33.3° by powder X-ray (Cu—Kα) diffraction. The crystal form is a novel reduced coenzyme Q10 crystal which has a higher melting point and a lower solubility in a solvent, and is more excellent in stability than the conventionally known reduced coenzyme Q10 crystal.
Abstract:
The present description discloses a preferred solution for controlling oxidation of reduced coenzyme Q10 (QH) without any need for formulation of QH. One or more embodiments of the present invention relate to a method for storing QH, including storing a composition containing solid QH and water, a method for controlling oxidation of QH, including storing a composition containing solid QH and water, and a liquid composition containing solid QH in water. The solid QH is preferably one or more selected from the group consisting of a Form I crystal, a Form II crystal, an amorphous solid, and a co-crystal composed of QH and one or more other compounds.
Abstract:
The present description discloses a method for storing reduced coenzyme Q10 (QH), which is capable of controlling oxidation. A first embodiment of the present invention relates to a method for storing QH, including storing a composition containing QH and having a water activity at 25° C. of 0.45 or less. A second embodiment of the present invention relates to a method for controlling oxidation of QH, including storing a composition containing QH and having a water activity at 25° C. of 0.45 or less. A third embodiment of the present invention relates to a composition containing QH and having a water activity at 25° C. of 0.45 or less.
Abstract:
The present invention provides a particulate composition wherein an oil component containing reduced coenzyme Q10 is polydispersed forming a domain in a matrix containing a water-soluble excipient, which simultaneously shows high oxidative stability and high oral absorbability, a production method thereof, and a stabilizing method thereof. It also provides a food, food with nutrient function claims, food for specified health uses, dietary supplement, nutritional product, animal drug, drink, feed, pet food, cosmetic, pharmaceutical product, therapeutic drug, prophylactic drug and the like, which contain the composition.