Analysis of Fresh Sap Collected from Ryukyu Lacquer Tree
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- LU Rong
- Department of Applied Chemistry, School of Science and Technology, Meiji University
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- HONDA Takayuki
- Department of Applied Chemistry, School of Science and Technology, Meiji University
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- SUNG Meesook
- Department of Biochemistry, Institute for Clinical and Translational Research, College of Medicine, Catholic Kwandong University
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- JUNG Jaekook
- Department of Architecture, College of Engineering, Catholic Kwandong University
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- MIYAKOSHI Tetsuo
- Department of Applied Chemistry, School of Science and Technology, Meiji University
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Abstract
The chemical structure of fresh lacquer sap collected from a lacquer tree growing in Nago City of Okinawa, Japan, was analyzed by gas chromatography/mass-spectrometry (GC/MS) and nuclear magnetic resonance (NMR). The results showed that Nago lacquer is laccol lacquer and its major components are 3-(heptadeca-10Z,13E,15E-trienyl)catechol, 3-(heptadeca-10Z,13E-dienyl)catechol, 3-(heptadeca-14Z-enyl)catechol, and 3-(heptadeca-12Z-enyl)catechol, which are similar to the components of Vietnamese lacquer. It showed higher laccase activity at pH 5 – 8 and better low temperature adaptability than Vietnamese lacquer. The Nago lacquer reached a dust free dry (DF) condition after 6 h, but Vietnamese lacquer did not. However, both were able to achieve harden dry (HD) in 24 h at 25°C, 80% relative humidity. In order to identify the lacquer provenance, the strontium isotope ratio was analyzed. The strontium isotope ratio (87Sr/86Sr) of Nago lacquer was 0.7110, which is different from the 0.7450 of Vietnamese lacquer.
Journal
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- Analytical Sciences
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Analytical Sciences 33 (11), 1253-1257, 2017
The Japan Society for Analytical Chemistry
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Details 詳細情報について
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- CRID
- 1390001204260910976
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- NII Article ID
- 130006199353
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- NII Book ID
- AA10500785
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 028650983
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- PubMed
- 29129864
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed