Method for producing alpha-form crystal of reduced glutathione, and method for storing said crystal
US10407463B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jun 3, 2016 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Jun 4, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07K5/08
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention provides a method of efficiently and stably producing α-form crystal of reduced glutathione, and a preservation method thereof. According to the invention, development of β-form crystal and/or transition to β-form crystal of reduced glutathione are suppressed by the coexistence of at least one kind of compound selected from the group of aliphatic amino acid, sulfur-containing amino acid, aromatic amino acid, an analogous compound and dipeptide, as a habit modifier, during production and preservation of an aqueous solution or α-form crystal of reduced glutathione.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.