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Merck

C5878

Sigma-Aldrich

Chlorophyll b from spinach

≥90% (HPLC), ≤0.5% Chlorophyll a

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About This Item

Fórmula empírica (notación de Hill):
C55H70MgN4O6
Número de CAS:
Peso molecular:
907.47
Beilstein:
4122778
Número CE:
Número MDL:
Código UNSPSC:
12352103
ID de la sustancia en PubChem:
NACRES:
NA.47

Nivel de calidad

Ensayo

≥90% (HPLC)

Formulario

powder

impurezas

≤0.5% Chlorophyll a

mp

183-185 °C (lit.)

ε (coeficiente de extinción)

15.9 × 104 at 452 nm in diethyl ether (lit.)
5.61 × 104 at 644 nm in diethyl ether (lit.)

aplicaciones

metabolomics
vitamins, nutraceuticals, and natural products

Condiciones de envío

dry ice

temp. de almacenamiento

−20°C

cadena SMILES

[H]C(=O)c1c(CC)c2cc3c(C)c4C(=O)[C@H](C(=O)OC)c5c6nc(cc7c(C)c(C=C)c(cc1n2)n7[Mg]n3c45)[C@@H](C)[C@@H]6CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C

InChI

1S/C55H71N4O6.Mg/c1-12-38-35(8)42-27-43-36(9)40(23-24-48(61)65-26-25-34(7)22-16-21-33(6)20-15-19-32(5)18-14-17-31(3)4)52(58-43)50-51(55(63)64-11)54(62)49-37(10)44(59-53(49)50)28-46-39(13-2)41(30-60)47(57-46)29-45(38)56-42;/h12,25,27-33,36,40,51H,1,13-24,26H2,2-11H3,(H-,56,57,58,59,60,62);/q-1;+2/p-1/b34-25+;/t32-,33-,36+,40+,51-;/m1./s1

Clave InChI

NSMUHPMZFPKNMZ-VBYMZDBQSA-M

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Descripción general

Chlorophyll b is one of the chlorophyll pigments that impart leaves their green color. Chlorophyll is a Greek name with chlorós meaning green and phyllon meaning leaf. The structure of Chlorophyll b was successfully decoded by Fischer and Wenderoth. It is present in peripheral antenna complexes along with chlorophyll a. The amount of chlorophyll b in spinach is found to be lesser than chlorophyll a.

Aplicación

Chlorophyll b from spinach has been used:
  • to perform quantitative analysis of the components of carotenoid and chlorophyll in the monovarietal virgin olive oil samples
  • to study the function of chlorophyll and porphyrins in the photo-oxidation of dairy products using sensory evaluation and fluorescence spectroscopy
  • to analyze the limits of application of spectrophotometry and spectrofluorimetry in the determination of Chlorophyll a/b ratio
  • to examine the changes in chlorophyll -a & -b content and color of grapevine leaves

Acciones bioquímicas o fisiológicas

Chlorophyll b extends the absorption spectrum of light-harvesting complexes LHC-I and LHC-II above 700 nm, a region of the visible spectrum that is not absorbed when only chlorophyll a is present in the LHCs.
Chlorophyll b undergoes breakdown to form pheophytin b by the enzyme chlorophyllase. This causes a change in its color from green to olive-brown. It is involved in the harvesting of light energy during the process of photosynthesis and its subsequent conversion to chemical energy. Along with chlorophyll a, it plays a key role in the ability of a plant to adapt to different light intensities.

Envase

Sealed ampule.

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)


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Los clientes también vieron

The role of naturally occurring chlorophyll and porphyrins in light-induced oxidation of dairy products. A study based on fluorescence spectroscopy and sensory analysis
Wold JP, et al.
International dairy journal, 15(4), 343-353 (2005)
A Tanaka et al.
Proceedings of the National Academy of Sciences of the United States of America, 95(21), 12719-12723 (1998-10-15)
Chlorophyll b is an ubiquitous accessory pigment in land plants, green algae, and prochlorophytes. Its biosynthesis plays a key role in the adaptation to various light environments. We isolated six chlorophyll b-less mutants by insertional mutagenesis by using the nitrate
On the limits of applicability of spectrophotometric and spectrofluorimetric methods for the determination of chlorophyll a/b ratio
Kouril R, et al.
Photosynthesis Research, 62(1), 107-116 (1999)
Chlorophyll and colour changes in grapevine leaves preserved by passive modification
K?rca A, et al.
European Food Research and Technology, 223(3), 387-393 (2006)
Jing Z Dong et al.
Journal of the science of food and agriculture, 93(2), 310-315 (2012-06-21)
Leaves of Lycium chinense L. are widely used in traditional Chinese medicine and as functional food in China and south-east Asia. Polyphenols are important active compounds in leaves of L. chinense L, but their compositions are still not very clear.

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