Reference: Ma Y, et al. (2020) Efficient Imaging of Saccharomyces cerevisiae Based on B- and N-Doped Carbon Dots. J Agric Food Chem 68(37):10223-10231

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Abstract


The estimation of yeast viability with B- and N-doped carbon dots (BN-CDs) was investigated in this paper. BN-CDs with a fluorescent quantum yield of 65.47% were prepared by a one-step hydrothermal method. The size distribution of BN-CDs was relatively narrow, with the majority falling within 7.5-8.5 nm, and they were mainly composed of carbon, oxygen, nitrogen, and boron. BN-CDs were shown to have strong and stable fluorescence. They exhibited excitation-independent photoluminescence property, which could avoid the autofluorescence and limitation of the excitation source. Dead and live yeast cells were distinguished well by BN-CD staining in a short time, and there was no strict requirement for light protection. The application of BN-CDs in beer brewing can solve the problem of estimation of yeast viability.

Reference Type
Evaluation Study | Journal Article
Authors
Ma Y, Ma Z, Huo X, Gu M, Ma S, Jing Y, Wang Y, Yue Y, Feng Z, Tian B
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