01694naa a2200289 a 450000100080000000500110000800800410001910000280006024501130008826000090020150001450021052007380035565000150109365000130110865000120112165300150113365300150114865300190116365300170118270000170119970000240121670000160124070000200125670000170127670000180129377300930131121027712019-09-23       2018    bl uuuu     u00u1 u    #d1 aMAGALHÃS-GUEDES, K. T.  aLaser biosensor use for the microbial metabolic activity assessment of kefir vinegar.h[electronic resource]  c2018  aScientific Notes. Título em português: Uso de biossensor a laser para avaliação da atividade metabólica microbiana do vinagre de kefir.  aThe objective of this work was to verify the use of a laser biosensor for the microbial metabolic activity assessment of kefir vinegar. Kefir grains were inoculated in apple must and were analyzed daily using the biospeckle technique. The initial biological activity was of 14.21 pixels per absolute value of differences (AVD). The biological activity of kefir grains decreased in the early days of fermentation and increased on the fourth day to 11.51 pixels per AVD; however, on the last day, the biological activity of kefir grains decreased to 7.12 pixels (alcoholic fermentation) and to 6.77 pixels per AVD (acetic fermentation). This new biospeckle methodology facilitates the microbiological control in fermentation processes.  aBiosensors  aVinegars  aVinagre  aBiospeckle  aBiossensor  aGrão de kefir  aKefir grains1 aVIANA, R. O.1 aBRAGA JUNIOR, R. A.1 aDIAS, D. R.1 aFERREIRA, C. D.1 aNUNES, I. L.1 aSCHWAN, R. F.  tPesquisa Agropecuária Brasileira, Brasília, DFgv. 53, n. 11, p. 1276-1280, Nov. 2018.