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C5878

Sigma-Aldrich

叶绿素 b 来源于菠菜

≥90% (HPLC), ≤0.5% Chlorophyll a

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About This Item

經驗公式(希爾表示法):
C55H70MgN4O6
CAS號碼:
分子量::
907.47
Beilstein:
4122778
EC號碼:
MDL號碼:
分類程式碼代碼:
12352103
PubChem物質ID:
NACRES:
NA.47

化驗

≥90% (HPLC)

形狀

powder

雜質

≤0.5% Chlorophyll a

mp

183-185 °C (lit.)

&epsilon ;(消光係數)

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

應用

metabolomics
vitamins, nutraceuticals, and natural products

運輸包裝

dry ice

儲存溫度

−20°C

SMILES 字串

[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

InChI 密鑰

NSMUHPMZFPKNMZ-VBYMZDBQSA-M

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一般說明

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。

應用

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

生化/生理作用

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。
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。

包裝

密封安瓿瓶。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


分析證明 (COA)

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