Crystals 2011, 1(3), 128-135; doi:10.3390/cryst1030128
Article

Crystal Structure Characterization of Natural Allantoin from Edible Lichen Umbilicaria esculenta

1,* email, 2 and 3
Received: 7 July 2011; in revised form: 3 August 2011 / Accepted: 8 August 2011 / Published: 9 August 2011
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In China, Korea, and Japan, Umbilicaria esculenta is considered as both food and medicinal resources from lichen. In the current study, a prismatic crystal was first isolated from edible lichen U. esculenta via solvent fractionation. The structure of the crystalline compound was elucidated as allantoin using single-crystal X-ray crystallographic and spectroscopic techniques. In light of the wide use of synthesized allantoin in cosmetic industry as a skin protectant, the biological origin of the allantoin isolated from natural food stuff edible lichen has great potential to be developed into functional cosmetics. Current findings also provided useful information for ecologists to further explore the role of lichen and allantoin in nitrogen metabolism.
Keywords: Umbilicaria esculenta; edible lichen; crystal; allantoin; X-ray crystallography
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MDPI and ACS Style

Xu, B.; Sung, C.; Han, B. Crystal Structure Characterization of Natural Allantoin from Edible Lichen Umbilicaria esculenta. Crystals 2011, 1, 128-135.

AMA Style

Xu B, Sung C, Han B. Crystal Structure Characterization of Natural Allantoin from Edible Lichen Umbilicaria esculenta. Crystals. 2011; 1(3):128-135.

Chicago/Turabian Style

Xu, Baojun; Sung, Changkeun; Han, Byunghee. 2011. "Crystal Structure Characterization of Natural Allantoin from Edible Lichen Umbilicaria esculenta." Crystals 1, no. 3: 128-135.

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