Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae

Hermann KM, Grünberger A, Patel A (2021)
World Journal of Microbiology and Biotechnology 37(9): 156.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Abstract / Bemerkung
**Abstract**
The control of root-feeding wireworms has become more challenging as synthetic soil insecticides have been progressively phased out due to environmental risk concerns. Innovative microbial control alternatives such as the so-called attract-and-kill strategy depend on the rapid and successful development of dried encapsulated microorganisms, which is initiated by rehydration. Casein is a functional additive that is already used in food or pharmaceutical industry due to its water binding capacity. Cross-linked forms such as formalin-casein (FC), exhibit altered network structures. To determine whether FC influences the rehydration of alginate beads in order to increase the efficacy of an attract-and-kill formulation for wireworm pest control, we incorporated either casein or FC in different alginate/starch formulations. We investigated the porous properties of alginate/starch beads and subsequently evaluated the activities of the encapsulated entomopathogenic fungusMetarhizium brunneumand the CO2producing yeastSaccharomyces cerevisiae. Adding caseins altered the porous structure of beads. FC decreased the bead density from (1.0197 ± 0.0008) g/mL to (1.0144 ± 0.0008) g/mL and the pore diameter by 31%. In contrast to casein, FC enhanced the water absorbency of alginate/starch beads by 40%. Furthermore, incorporating FC quadrupled the spore density on beads containingM. brunneumandS. cerevisiae, and simultaneous venting increased the spore density even by a factor of 18. Moreover, FC increased the total CO2produced byM. brunneumandS. cerevisiaeby 29%. Thus, our findings suggest that rehydration is enhanced by larger capillaries, resulting in an increased water absorption capacity. Our data further suggest that gas exchange is improved by FC. Therefore, our results indicate that FC enhances the fungal activity of both fungiM. brunneumandS. cerevisiae, presumably leading to an enhanced attract-and-kill efficacy for pest control.Graphic abstract
Erscheinungsjahr
2021
Zeitschriftentitel
World Journal of Microbiology and Biotechnology
Band
37
Ausgabe
9
Art.-Nr.
156
ISSN
0959-3993
eISSN
1573-0972
Page URI
https://pub.uni-bielefeld.de/record/2956806

Zitieren

Hermann KM, Grünberger A, Patel A. Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae. World Journal of Microbiology and Biotechnology. 2021;37(9): 156.
Hermann, K. M., Grünberger, A., & Patel, A. (2021). Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae. World Journal of Microbiology and Biotechnology, 37(9), 156. https://doi.org/10.1007/s11274-021-03121-3
Hermann, K. M., Grünberger, A., and Patel, A. (2021). Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae. World Journal of Microbiology and Biotechnology 37:156.
Hermann, K.M., Grünberger, A., & Patel, A., 2021. Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae. World Journal of Microbiology and Biotechnology, 37(9): 156.
K.M. Hermann, A. Grünberger, and A. Patel, “Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae”, World Journal of Microbiology and Biotechnology, vol. 37, 2021, : 156.
Hermann, K.M., Grünberger, A., Patel, A.: Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae. World Journal of Microbiology and Biotechnology. 37, : 156 (2021).
Hermann, Katharina M., Grünberger, Alexander, and Patel, Anant. “Formalin-casein enhances water absorbency of calcium alginate beads and activity of encapsulated Metarhizium brunneum and Saccharomyces cerevisiae”. World Journal of Microbiology and Biotechnology 37.9 (2021): 156.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 34406525
PubMed | Europe PMC

Suchen in

Google Scholar