A new scientific study has uncovered the chemical reasons behind the distinctive scent of old books, which sometimes blends with notes of vanilla, almonds, and wood. It indicates that this scent is not only related to the age of the books but also results from continuous chemical reactions occurring within the paper over time.
The Russian website «Наука Mail», specializing in scientific news and information, clarified that a study conducted by the University of Cyprus showed that this scent is produced by the decomposition of paper components and the emission of volatile organic compounds into the air, which vary depending on the materials used in paper manufacturing and storage conditions.
For his part, the website pointed out that oxygen, humidity, and light affect the basic components of paper, especially cellulose and lignin, contributing to their decomposition and the formation of chemical compounds responsible for the distinctive scents of old books.
It added that a study published in the scientific journal «Molecules» saw researchers from the Torno Institute of Higher Education analyze the volatile organic compounds emitted from two historical books, one dating back to the 16th century and the other to the 19th century, using chemical analysis techniques.
It noted that the study showed differences in emitted compounds depending on the type of paper and its manufacturing methods, indicating the potential to utilize the analysis of these compounds in assessing the condition of historical books and documents, and helping libraries and archives determine maintenance and restoration priorities.
The study emphasized that the same chemical reactions contribute to the yellowing of pages and changes in paper properties, especially due to lignin oxidation and exposure to light, including ultraviolet rays that accelerate the formation of colored compounds.
It clarified that this confirms the importance of preserving books and historical documents in a suitable environment, away from direct light and significant fluctuations in temperature and humidity, to limit paper deterioration and extend the lifespan of library and archival collections.
Source: Syrian Arab News Agency (SANA)
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