Browsing by Autor "Danitza Xiomara Romero-Calle"

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Additional file 1 of Systematic review and meta-analysis: the efficiency of bacteriophages previously patented against pathogenic bacteria on food
(Figshare (United Kingdom), 2023) Danitza Xiomara Romero-Calle; Vinícius Pereira de Santana; Raquel Guimarães Benevides; María Teresa Álvarez Aliaga; Craig Billington; Aristóteles Goés‐Neto
Additional file 1: Table 1s.
Residual Brewing Yeast as Substrate for Co-Production of Cell Biomass and Biofilm Using Candida maltosa SM4
(Multidisciplinary Digital Publishing Institute, 2021) Vidal Flores-Copa; Luis Romero‐Soto; Danitza Xiomara Romero-Calle; María Teresa Álvarez-Aliaga; Felipe Orozco-Gutiérrez; José Roberto Vega‐Baudrit; Carlos Martı́n; Cristhian Carrasco
Candida maltosa was cultivated in the liquid phase of residual brewing yeast, a major brewery residue, to produce biomass and biofilm. Using response surface methodology, the effect of two variables at two different levels was investigated. The independent variables were agitation speed (at 100 and 200 rpm), and aeration (at 1 and 3 L min−1). Aeration was identified to be important for the production of both biomass and biofilm, while agitation was the only factor significantly affecting biofilm production. The maximal production of biofilm (2.33 g L−1) was achieved for agitation of 200 rpm and aeration of 1 L min−1, while the maximum for biomass (16.97 g L−1) was reached for 100 rpm agitation and 3 L min−1 air flow. A logistic model applied to predict the growth of C. maltosa in the exponential phase and the biofilm production, showed a high degree of agreement between the prediction and the actual biomass measured experimentally. The produced biofilms were further characterized using Fourier-transform infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Thermogravimetric Analysis (TGA). FTIR allowed the identification of methyl, carbonyl ester and sulfate groups, and revealed the presence of uronic acid moieties and glycosidic bonds. Water-retention ability up to relatively high temperatures was revealed by TGA, and that makes the produced biofilm suitable for production of hydrogels. SEM also gave indications on the hydrogel-forming potential of the biofilm.
Stress induced biofilm formation in Propionibacterium acidipropionici and use in propionic acid production
(Springer Science+Business Media, 2019) Victor Hugo Cavero-Olguin; Rajni Hatti‐Kaul; Oscar Victor Cardenas-Alegría; Marcelo Gutierrez-Valverde; Adalid Alfaro-Flores; Danitza Xiomara Romero-Calle; María Teresa Álvarez-Aliaga
Systematic review and meta-analysis: the efficiency of bacteriophages previously patented against pathogenic bacteria on food
(BioMed Central, 2023) Danitza Xiomara Romero-Calle; Vinícius Pereira de Santana; Raquel Guimarães Benevides; María Teresa Álvarez Aliaga; Craig Billington; Aristóteles Goés‐Neto