A High-Throughput and Solvent-free Method for Measurement of Natural Polyisoprene Content in Leaves by Fourier Transform Near Infrared Spectroscopy

Shinya Takeno, Takeshi Bamba, Yoshihisa Nakazawa, Eiichiro Fukusaki, Atsushi Okazawa, Akio Kobayashi

Research output: Contribution to journalArticle

22 Citations (Scopus)


Commercial development of natural polyisoprene from polyisoprene-producing plants requires detailed knowledge on how to select high-polyisoprene-content lines and establish agronomic cultivation methods for achieving maximum polyisoprene yield. This development can be facilitated by a high-throughput quantification method for natural polyisoprene. In this paper, we describe the Fourier transform near infrared spectroscopy (FT-NIR) technique coupled with a partial least squares (PLS) regression model to quantify natural polyisoprene in Eucommia ulmoides leaves. PLS regression models are discussed with respect to linearity, root-mean-square error of estimation (RMSEE), and root-mean-square error of prediction (RMSEP). The best PLS regression model was obtained with second derivative NIR spectra in the region between 4000-6000 cm-1 (R2Y, 0.95; RMSEE, 0.25; RMSEP, 0.37). This is the first report to employ FT-NIR analysis for high throughput and solvent-free quantification of natural polyisoprene in leaves.

Original languageEnglish
Pages (from-to)537-540
Number of pages4
JournalJournal of Bioscience and Bioengineering
Issue number6
Publication statusPublished - Dec 1 2008
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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