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KI und Digitalisierung in der Landwirtschaft – Was bringt Smart Farming in der Tierhaltung?
No full textCell walls of filamentous fungi : challenges and opportunities for biotechnology
Get PDFThe cell wall of filamentous fungi is essential for growth and development, both of which are crucial for fermentations that play a vital role in the bioeconomy. It typically has an inner rigid core composed of chitin and beta-1,3-/beta-1,6-glucans and a rather gel-like outer layer containing other polysaccharides and glycoproteins varying between and within species. Only a fraction of filamentous fungal species is used for the biotechnological production of enzymes, organic acids, and bioactive compounds such as antibiotics in large amounts on a yearly basis by precision fermentation. Most of these products are secreted into the production medium and must therefore pass through fungal cell walls at high transfer rates. Thus, cell wall mutants have gained interest for industrial enzyme production, although the causal relationship between cell walls and productivity requires further elucidation. Additionally, the extraction of valuable biopolymers like chitin and chitosan from spent fungal biomass, which is predominantly composed of cell walls, represents an underexplored opportunity for circular bioeconomy. Questions persist regarding the effective extraction of these biopolymers from the cell wall and their repurposing in valorization processes. This review aims to address these issues and promote further research on understanding the cell walls in filamentous fungi to optimize their biotechnological use.
Key points
• The highly complex cell walls of filamentous fungi are important for biotechnology.
• Cell wall mutants show promising potential to improve industrial enzyme secretion.
• Recent studies revealed enhanced avenues for chitin/chitosan from fungal biomass
Modeling Growth Dynamics of Lemna minor : Process Optimization Considering the Influence of Plant Density and Light Intensity
Get PDFThe production of duckweed (Lemnaceae) as a novel protein source could make a valuable contribution to human nutrition. The greatly reduced habitus of duckweed enables simple cultivation with extremely low space requirements, making this free-floating freshwater plant ideal for substrate-free and vertical cultivation in controlled environment agriculture. Of particular importance in the design of a plant-producing Indoor Vertical Farming process is the determination of light intensity, as artificial lighting is generally the most energy-intensive feature of daylight-independent cultivation systems. In order to make the production process both cost-effective and low emission in the future, it is, therefore, crucial to understand and mathematically describe the primary metabolism, in particular the light utilization efficiency. To achieve this, a growth model was developed that mathematically describes the combined effects of plant density and light intensity on the growth rate of Lemna minor L. and physiologically explains the intraspecific competition of plants for light through mutual shading. Furthermore, the growth model can be utilized to derive environmental and process parameters, including optimum harvest quantities and efficiency-optimized light intensities to improve the production process
Quo vadis Globalisierung? : Veranderungen in den Wertschopfungsketten deutscher Groftkonzerne
No full textElterneinstellungen zu einem kombinierten Angebot von Obst- und Snackgemüsekisten und Nachhaltigkeitsbildung durch Bio-Lieferdienste
Get PDFZur Förderung der ökologischen Landwirtschaft und Bildung für nachhaltige Entwicklung wird untersucht, ob sich durch eine Kooperation mit Bildungseinrichtungen ein neues Geschäftsmodell für Bio-Lieferdienste eröffnen kann; über die Bereitstellung von Obst-/Gemüsekisten und gemeinsame Nachhaltigkeitsbildung. Es handelt sich dabei um ein innovatives und neues Konzept, sodass es zunächst einer Erhebung der Angebotsstrukturen sowie der Akzeptanz der Eltern bedarf
