MÀU VÀNG ẤN ĐỘ: KHOA HỌC HÉ MỞ BÍ ẨN VỀ SẮC TỐ HUYỀN THOẠI

Danh sách hạt màu tìm thấy trong Ragamala được liệt kê bởi tác giả.
Nguồn: Triển lãm riêng của tác giả tại ‘Những hầm chứa bí mật’ – một triển lãm vào năm 2019 tại bảo tàng Nghệ Thuật San Diego. 
Teignmouth; Joseph M. W. Turner, 1812. Tranh sơn dầu trên vải. Nguồn: Phòng tranh Tate https://www.tate.org.uk/art/artworks/turner-teignmouth-t03882
Raga Megh; Từ bộ sưu tầm của Claudio Moscatelli.
Nguồn: https://www.christies.com/lotfinder/Lot/an-illustration-to-a-ragamala-series-shankara-6072543-details.aspx

Phân tích thành phần hoá học của màu vàng Ấn Độ

Bột màu được trưng bày tại bảo tàng Sackler, từ bộ sưu tập Forbes, tại Đại học Harvard, Cambridge, MA.
Nguồn: The Paris Review https://www.theparisreview.org/blog/2018/07/12/the-harvard-color-detectives/
Nguồn: https://doi.org/10.1016/j.dyepig.2018.08.014

References and bibliography

  1. Finlay, V. (2002). Colour (pp 239–240). Hodder and Stoughton
  2. R. Ploeger, A. Shugar, The story of Indian yellow — excreting a solution, Journal of Cultural Heritage (2016), http://dx.doi.org/10.1016/j.culher.2016.12.001
  3. Magnesium and Calcium (in almost equal proportions), Silica, Aluminium and water made up the rest. Ibid pp 9–10
  4. Naturally occurring forms of euxanthic acid are rare and then only in the plant family called the Gentians.
  5. Xanthone (a precursor compound of euxanthone) is prolific in plants and fungi. Euxanthone too has a wide distribution across plant families but is especially numerous in two families — Clusiaceae and Fabaceae.
  6. R.Ploeger, A. Shugar, G.D. Smith and V.J. Chen, Late 19th century accounts of Indian yellow: The analysis of samples from the Royal Botanic Gardens, Kew Dyes and Pigments 160 (2019) 418–431 https://doi.org/10.1016/j.dyepig.2018.08.014
  7. Polyphenols are a naturally occurring (now also synthesized) class of plant compounds, structurally composed of multiple phenol rings, that have value as pigments and as nutriceutical antioxidants. Common polyphenols in mango leaves are: mangiferrin, anthocyanins, kaempferol and quercetin amongst others. If combined with curcumin, they turn a rich yellow color. This method of yellow pigment production is put to good use by Indonesia’s Batik industry. https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1541-4337.2008.00047.x
  8. The coming together of ‘fog’ and ‘yellow’ in the same sentence immediately brought TS Eliot’s Prufrock to my mind and I could not resist the great man’s magnetic pull https://www.poetryfoundation.org/poetrymagazine/poems/44212/the-love-song-of-j-alfred-prufrock
  9. Blue is a good example of these recipes. Three geographically disparate civilizations invented, sui generis, different recipes for blue. Chinese Blue, Egyptian Blue and Mayan Blue are three versions of the color that existed in ancient times, not as natural pigments but as ingenious recipe-combinations of plant and mineral pigments. (Detailed in Table 1)
  10. David Lee’s ‘Nature’s Palette’ is an excellent source on plant optics and the production of color in plants. It studies the subject in every part of plants; in roots, seeds, bark, leaves and flowers. It is a densely detailed report on the biology & chemistry of pigmentation as well as on plant structure and optics and is an extremely worthwhile read if you would like a book that delves deep in the science. Lee, David. (2010). ‘Nature’s Palette’. The University of Chicago Press.