Sinapinic acid
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| Template:Longitem | C11H12O5 |
| Molar mass | 224.21 g/mol |
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Sinapinic acid, or sinapic acid (Sinapine - Origin: L. Sinapi, sinapis, mustard, Gr., cf. F. Sinapine.), is a small naturally occurring hydroxycinnamic acid. It is a member of the phenylpropanoid family. It is a commonly used matrix in MALDI mass spectrometry.[1][2] It is a useful matrix for a wide variety of peptides and proteins. It serves well as a matrix for MALDI due to its ability to absorb laser radiation and to also donate protons (H+) to the analyte of interest.
Sinapic acid can form dimers with itself (one structure) and ferulic acid (three different structures) in cereal cell walls and therefore may have a similar influence on cell-wall structure to that of the diferulic acids.[3]
Sinapine is an alkaloidal amine found in black mustard seeds. It is considered a choline ester of sinapinic acid.[4]
Natural occurrences
Sinapinic acid can be found in wine,[5] vinegar,[6] and black plums.[7]
Metabolism
Sinapate 1-glucosyltransferase is an enzyme that uses UDP-glucose and sinapate to produce UDP and 1-sinapoyl-D-glucose.
Sinapoylglucose—malate O-sinapoyltransferase is an enzyme that uses 1-O-sinapoyl-beta-D-glucose and (S)-malate to produce D-glucose and sinapoyl-(S)-malate.
Related compounds
Canolol is a phenolic compound found in crude canola oil. It is produced by decarboxylation of sinapic acid during canola seed roasting.[8]
See also
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References
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- ↑ Comparison of Phenolic Acids and Flavan-3-ols During Wine Fermentation of Grapes with Different Harvest Times. Rong-Rong Tian, Qiu-Hong Pan, Ji-Cheng Zhan, Jing-Ming Li, Si-Bao Wan, Qing-Hua Zhang and Wei-Dong Huang, Molecules, 2009, 14, pages 827-838, Script error: No such module "CS1 identifiers".
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- ↑ Antioxidant canolol production from a renewable feedstock via an engineered decarboxylase. Krista L. Morley, Stephan Grosse, Hannes Leischa and Peter C. K. Lau, Green Chem., 2013,n15, pages 3312-3317, Script error: No such module "CS1 identifiers".
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