Organic red colorants in Islamic manuscripts (12th-15th c.) produced in al-Andalus, part 1

The conservation of Islamic manuscripts in the Fondo Ka'ti created the opportunity to study the organic red colourants applied in five manuscripts, which include a Koran (1198), a theology treatise (14th c.), a book of poems from Al-Sarishi (15th c.), a biography of the Prophet (1468) and manuscript 19 (1485). These dark red colours were characterized using fibre optic reflectance spectroscopy (FORS-VIS), microspectrofluorimetry and infrared...