Rapid determination of nicotinic acid by immobilized lactobacillus arabinosus

Tadashi Matsunaga*, Isao Karube, Shuichi Suzuki

*この研究の対応する著者

研究成果: Article査読

54 被引用数 (Scopus)

抄録

A rapid determination of aicotinic acid by using immobilized Lactobacillus arabinosus and a combined glass electrode is reported. L. arabinosus is immobilized in agar gel. The optimum agar concentration is from 2-2.5% ( w v) and the optimum bacterial concentration in the agar gel matrix is 10 mg wet cells ml-1. The relationship between the potential difference and the logarithm of the nicotinic acid concentration is linear over the range 5 X 10-8-5 X 10-6 g ml-1. The assay requires only 1 h; potentials are reproducible with an average relative error of 5%. The growth of L. arabinosus in agar gel matrix is observed in the medium containing nicotinic acid. Immobilized L. arabinosus is stable for 30 days.

本文言語English
ページ(範囲)233-239
ページ数7
ジャーナルAnalytica Chimica Acta
99
2
DOI
出版ステータスPublished - 1978 8 1
外部発表はい

ASJC Scopus subject areas

  • 生化学
  • 分析化学
  • 分光学
  • 環境化学

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