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Seasoning of wood is a crucial process aimed at reducing and stabilizing the moisture content within the wood to prevent future shrinkage, structural damage, or aesthetic issues once the wood is used in construction. Wood naturally swells when it absorbs moisture and contracts as it dries.
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Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
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Turmeric: old spice, new spice.

C J Cooksey1

  • 1a Watford , United Kingdom.

Biotechnic & Histochemistry : Official Publication of the Biological Stain Commission
|May 17, 2017
PubMed
Summary

Chemical investigations into turmeric

Area of Science:

  • Organic Chemistry
  • Natural Product Chemistry

Background:

  • Turmeric's yellow components have been studied since 1815.
  • Curcumin is the primary yellow compound in turmeric.

Observation:

  • Curcumin exists in the enol form, not solely as a 1,3-diketone.
  • Purification challenges and additional yellow compounds complicated structural elucidation.

Findings:

  • The chemical structure of curcumin was a subject of intense research for nearly a century.
  • The enol tautomer is the predominant form of curcumin.

Implications:

  • Understanding curcumin's structure is crucial for its applications.
  • Turmeric's historical use as a dye has declined, but pharmaceutical potential is emerging.
Keywords:
curcuminhistoryketo-enolturmericyellow dye

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  • Accurate chemical characterization supports new applications for turmeric extracts.