期刊
AICHE JOURNAL
卷 67, 期 5, 页码 -出版社
WILEY
DOI: 10.1002/aic.17142
关键词
ethanol biosensor; fermentation; regular nanocubes; screen-printed microchip; ultrawide linear range
资金
- National Natural Science Foundation of China [21727818, 22078148, 91934303, 21921006]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
A screen-printed biosensing microchip (SPBM) was proposed for analyzing ethanol concentration during fermentation through a well-defined nanocubic structure, enabling direct detection of fermentation broth without pretreatment; the microchip exhibited high sensitivity and electrocatalysis, allowing accurate and rapid monitoring of ethanol concentration during fermentation.
The real-time and full concentration analysis of ethanol during the fermentation reaction allows the precise control of the microbial metabolism to promote the conversion rate; however, only few techniques can directly detect the fermentation broth without pretreatment. To address this issue, a screen-printed biosensing microchip (SPBM) was proposed to analyze the ethanol concentration in fermentation, relying on designing a well-defined nanocubic structure of an Au nanoparticles/nickel hexacyanoferrate nanocomposite. This nanocomposite was then made into a printing ink for the direct fabrication of a SPBM. The as-prepared microchip exhibits an ultrahigh electrocatalysis on nicotinamide adenine dinucleotide with a high sensitivity of 96.2 +/- 2.9 mu A center dot mM(-1)center dot cm(-2). Moreover, after the immobilization of alcohol dehydrogenase, the accurate and rapid monitoring of the ethanol concentration during the real fermentation reaction can be realized within an ultrawide linear range of 0.1-10 M in the broth without any pretreatment.
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