跳转至内容
Merck
CN

C5878

叶绿素 b 来源于菠菜

≥90% (HPLC), ≤0.5% Chlorophyll a

登录 查看组织和合同定价。

选择尺寸


关于此项目

经验公式(希尔记法):
C55H70MgN4O6
化学文摘社编号:
分子量:
907.47
UNSPSC Code:
12352103
NACRES:
NA.47
PubChem Substance ID:
EC Number:
208-272-4
Beilstein/REAXYS Number:
4122778
MDL number:
技术服务
需要帮助?我们经验丰富的科学家团队随时乐意为您服务。
让我们为您提供帮助
技术服务
需要帮助?我们经验丰富的科学家团队随时乐意为您服务。
让我们为您提供帮助

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

InChI key

NSMUHPMZFPKNMZ-VBYMZDBQSA-M

SMILES string

[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

assay

≥90% (HPLC)

form

powder

impurities

≤0.5% Chlorophyll a

mp

183-185 °C (lit.)

ε (extinction coefficient)

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

application(s)

metabolomics
vitamins, nutraceuticals, and natural products

shipped in

dry ice

storage temp.

−20°C

Quality Level

General description

叶绿素b是使叶子呈现绿色的叶绿素之一。叶绿素(Chlorophyll)源自希腊语,由代表绿色的chlorós和代表叶子的phyllon组合而成。叶绿素b的结构由Fischer和Wenderoth成功解码。它与叶绿素a共同存在于外周捕光天线复合体中。菠菜中的叶绿素b含量少于叶绿素a。

Application

叶绿素b(来自菠菜)已用于:
  • 定量分析单品种初榨橄榄油样品中的类胡萝卜素和叶绿素
  • 通过感官评价和荧光光谱法研究叶绿素和卟啉在乳制品光氧化中的作用
  • 分析分光光度法和荧光分光光度法测定叶绿素a/b比的应用限制
  • 研究葡萄藤叶的叶绿素a&b含量和颜色变化

Biochem/physiol Actions

叶绿素 b 将捕光复合物 LHC-I 和 LHC-II 的吸收光谱扩展到 700 nm 以上,当 LHC 中仅存在叶绿素 a 时,可见光谱的一个区域不被吸收。
叶绿素b会被叶绿素酶降解为脱镁叶绿素b,导致其颜色从绿色变成黄褐色。它在光合成过程中参与光能捕获和后续光能转化化学能过程。与叶绿素a一起在植物对不同光强的适应性方面起重要作用。

Packaging

密封安瓿瓶。

存储类别

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

没有发现合适的版本?

如果您需要特殊版本,可通过批号或批次号查找具体证书。

已有该产品?

在文件库中查找您最近购买产品的文档。

访问文档库

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)
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)
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)
Carole Jubert et al.
Journal of chromatography. A, 1140(1-2), 95-100 (2006-12-14)
A method for the isolation of chlorophylls from spinach by counter-current chromatography was developed. An initial extraction protocol was devised to avoid the notorious sensitivity of chlorophylls to degradation by light, heat, oxygen, acids and bases. Further purification and separation

我们的科学家团队拥有各种研究领域经验,包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.

联系客户支持