Haematinic index

In all supplementation therapy it is prudent to assess the trace element status of the patient, by monitoring the blood plasma. For example, for iron the haematinic index can yield useful information that can be used to monitor the success of the treatment. However, simple measurement of the concentrations of the relevant metals in blood plasma is not necessarily the most useful indicator of the effectiveness of supplementation therapy, since the total concentration of metal in the plasma may not reflect the concentration of the particular metal species that is required to counteract the deficiency state. 

Haematin, 6a,7-dihydro-3,4,6a,10-tetrahydroxybenz[b]indeno-[l,2-d]pyran-9(6H)-one, is a neoflavanoid dyestuff found in heart-wood of the commercially traded Haematoxylum species H. campechianum L. and H. brasiletto Karsten ( Logwood , q.v. and other related common names Merck Index, 1996 Mabberley, 1998 Nowik, 2001). This is also hsted in some sources as hematein and should not be confused witii tiie blood compound hematin. Colour Index (1971) reference Cl 75290/ Natural Black 1 and 2. 

About 10% of the heartwood is hematoxyhn, with tannins and resins also present. The hematoxylin oxidises to the compound haematin during the dyeing process because it is pH sensitive, a range of colours can be prepared ranging from red to purple and blue, as well as black (Colour Index, 1971). These are listed by the Colour Index as Cl 75291/Natural Black 3 and 4. 

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See also in sourсe #XX -- [ ]

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