Charge Transport in <i>Bifidobacterium animalis subsp.lactis BB</i>-12 under Various Atmospheres

• 作者: A. Alt?ndal C. Denktas H. S. Bozkurt K. Bozkurt O. Ozdemir Z. Avdan
• 来源期刊: 应用科学(英文)
• 学科: 医学
• 关键词: BIFIDOBACTERIUM animalis subsp.lactis BB-12 Charge Transport FTIR ZETA Potential
• 年，卷（期）: yykxyw_2019,（6）
• 页码范围: 506-514
• 页数: 9页
• 分类号: R73

摘要

The influence of relative humidity (RH) on quasistatic current-voltage (I-V) characteristics of Bifidobacterium animalis subsp. lactis BB-12 thin layers was studied for the first time. The value of electrical conductivity in 75% RH was found to be in the order of 10-7 (ohm·cm)-1, which was 106 orders of magnitude higher than that observed in dry atmosphere. It was concluded that RH played a key role in hysteresis behavior of the measured (I-V) characteristics. FTIR measurements showed that under water moisture environment, the associated bonds between amine and carboxyl group were greatly strengthened that was the source of free charge carries after ionization. The surface charge of Bifidobacterium animalis subsp. lactis BB-12 was found to be negative by zeta potential measurements, claiming that electrons were the charge carriers.