Crystal form of ergothioneine
AssigneeNanjing Nutrabuilding Bio-Tech Co., Ltd.
InventorsJingwei ZHOU, Yongxiao ZHU, Shawn WELLS, Xi ZHU, Kylin LIAO
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Abstract
The invention discloses a crystal form of ergothioneine and a preparation method thereof. The method provided by the invention can efficiently and stably produce anhydrous crystal form of ergothioneine. Moreover, the ergothioneine crystal form of the invention has high purity, high mass fraction, low moisture content and high crystallization yield, so it can have a wide application prospect in the fields of dietary supplements, foods or cosmetics.
Claims12
An anhydrous crystal form A of ergothioneine, wherein the X-ray powder diffraction pattern of the anhydrous crystal form A comprises peaks at diffraction angles (2θ) of 8.6°±0.1°, 19.0°±0.1°, 26.4°±0.1°, and 32.3°±0.1°.
An anhydrous crystal form B of ergothioneine, wherein the X-ray powder diffraction pattern of the anhydrous crystal form B comprises peaks at diffraction angles (2θ) of 15.3°±0.1°, 22.8°±0.1°, 27.7°±0.1°, and 33.5°±0.1°.
An anhydrous crystal form C of ergothioneine, wherein the X-ray powder diffraction pattern of the anhydrous crystal form C comprises peaks at diffraction angles (2θ) of 11.2°±0.1°, 18.1°±0.1°, 24.0°±0.1°, and 26.9°±0.1°.
Dependencies are inferred from the claim text.