Sinapinic acid
Encyclopedia
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
. 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
.
Sinapine
is an alkaloidal amine found in black mustard seeds. It is considered a choline
ester of sinapic acid.
Hydroxycinnamic acid
Hydroxycinnamic acids are a class of polyphenols having a C6-C3 skeleton. These compounds are hydroxy derivatives of cinnamic acid.In the category of phytochemicals that can be found in food, there are :* Alpha-cyano-4-hydroxycinnamic acid...
. It is a member of the phenylpropanoid
Phenylpropanoid
The phenylpropanoids are a diverse family of organic compounds that are synthesized by plants from the amino acid phenylalanine. Their name is derived from the six-carbon, aromatic phenyl group and the three-carbon propene tail of cinnamic acid, which is synthesized from phenylalanine in the first...
family. It is a commonly used matrix in MALDI
Matrix-assisted laser desorption/ionization
Matrix-assisted laser desorption/ionization is a soft ionization technique used in mass spectrometry, allowing the analysis of biomolecules and large organic molecules , which tend to be fragile and fragment when ionized by more conventional ionization methods...
mass spectrometry
Mass spectrometry
Mass spectrometry is an analytical technique that measures the mass-to-charge ratio of charged particles.It is used for determining masses of particles, for determining the elemental composition of a sample or molecule, and for elucidating the chemical structures of molecules, such as peptides and...
. 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
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation...
radiation and to also donate protons (H+) to the analyte of interest.
Sinapic acid can form dimers with itself (one structure) and ferulic acid
Ferulic acid
Ferulic acid is a hydroxycinnamic acid, a type of organic compound. It is an abundant phenolic phytochemical found in plant cell wall components such as arabinoxylans as covalent side chains. It is related to trans-cinnamic acid. As a component of lignin, ferulic acid is a precursor in the...
(three different structures) in cereal cell walls and therefore may have a similar influence on cell-wall structure to that of the diferulic acids
Diferulic acids
Diferulic acids are organic compounds that have the general chemical formula C20H18O8, they are formed by dimerisation of ferulic acid. Just as ferulic acid is not the proper IUPAC name, the diferulic acids also tend to have trivial names that are more commonly used than the correct IUPAC name...
.
Sinapine
Sinapine
Sinapine is an alkaloidal amine found in black mustard seeds. It is considered a choline ester of sinapic acid.Sinapine was discovered by Etienne Ossian Henry in 1825.-Metabolism:...
is an alkaloidal amine found in black mustard seeds. It is considered a choline
Choline
Choline is a water-soluble essential nutrient. It is usually grouped within the B-complex vitamins. Choline generally refers to the various quaternary ammonium salts containing the N,N,N-trimethylethanolammonium cation....
ester of sinapic acid.