The aspects of microbial biomass use in the utilization of selected waste from the agro-food industry

Abstract

Cellular biomass of microorganisms can be effectively used in the treatment of waste from various branches of the agro-food industry. Urbanization processes and economic development, which have been intensifying in recent decades, lead to the degradation of the natural environment. In the first half of the 20th century, problems related to waste management were not as serious and challenging as they are today. The present situation forces the use of modern technologies and the creation of innovative solutions for environmental protection. Waste of industrial origin are difficult to recycle and require a high financial outlay, while the organic waste of animal and plant origins, such as potato wastewater, whey, lignin, and cellulose, is dominant. In this article, we describe the possibilities of using microorganisms for the utilization of various waste products. A solution to reduce the costs of waste disposal is the use of yeast biomass. Management of waste products using yeast biomass has made it possible to generate new metabolites, such as β-glucans, vitamins, carotenoids, and enzymes, which have a wide range of industrial applications. Exploration and discovery of new areas of applications of yeast, fungal, and bacteria cells can lead to an increase in their effective use in many fields of biotechnology.

Improving the Solubility and Digestibility of Potato Protein with an Online Ultrasound-Assisted PH Shifting Treatment at Medium Temperature

“…The average of three scans at a scanning speed of 100 nm/min and a scanning step of 0.5 nm was determined. The data are expressed by the average residue ellipticity ([θ]×10 4 (deg•cm 2 •dmol −1 )), and the relative content of the secondary structure of the protein was calculated using the estimation program provided with the Jasco spectropolarimeter.…”

“…Potato protein is considered to be a high-quality plant protein due to its good amino acid composition [ 1 ]. Its amino acid composition resembles that of egg protein [ 2 ]. Generally, potato protein is a by-product of the starch industry [ 3 ].…”

Nutritional Characteristics Assessment of Sunflower Seeds, Oil and Cake. Perspective of Using Sunflower Oilcakes as a Functional Ingredient

“…Moreover, problems related to cost disposal and the use of by-products have become an increasing challenge [5]. Conventional methods for waste disposal and valorization are incineration, aerobic fermentation, composting, fertilizer and feedstuff [6]. Alternative solutions consist in extracting the maximum value from waste, hence the bioactive compound and re-circulating them in the process, making value-added products and thus creating the concept of "waste = food" [7,8].…”

“…The use of these permits the achievement of effective waste utilization and the successful realization of the circular economy concept [9]. Possible valorization methods of the oilcakes involve their use in animal diets as feeds, compost, a substrate in the production of enzymes, antibiotics and Plants 2021, 10, 2487 2 of 22 biosurfactants and in the recovery of bioactive compounds for further use in the production of new value-added products [6,10].…”

Use of Propionibacterium freudenreichii T82 Strain for Effective Biosynthesis of Propionic Acid and Trehalose in a Medium with Apple Pomace Extract and Potato Wastewater

“…Potato wastewater has no specific application—it is most often used to fertilize fields as a source of nitrogen absorbed by plants. However, potato wastewater has a high pollution load, and so using this waste as a fertilizer may lead to water eutrophication and deterioration of soil fertility [ 22 , 23 ]. Therefore, there is still a need to search for new, effective ways of managing this waste.…”