TY - JOUR

T1 - Introduction to the challenges and chances regarding the utilization of nitrogen-rich by-products and waste streams

AU - Thielemann, Anne Karolin

AU - Pleissner, Daniel

N1 - Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Acknowledgments The authors acknowledge the German Federal Ministry of Education and Research (BMBF) for providing funding within the Era-Net Cofund “FACCE SURPLUS” (Project UpWaste 031B0934) and German Federal Ministry of Food and Agriculture for providing funding within the Era-Net Cofund “FOSC-ERA” (Project Climaqua 2821ERA12) Programs. Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - This contribution illustrates the potential of nitrogen-rich by-products and waste streams as sources for proteins and amino acids. Furthermore, applications of recovered nitrogen compounds in food and feed as well as non-food and non-feed products have been illuminated. It has been shown that, for instance, cheese, yoghurt, and whey have essential amino acid content above 40% (w/w) of the total amino acid pool. Pumpkin seed pie, hops and sea buckthorn seeds, although the protein content can be more than 20% (w/w) crude protein in dry matter, show a rather poor essential amino acid profile. It should be admitted here that even streams containing diluted amounts of nitrogen compounds such as wastewater should be used. This, however, may only be economically feasible when prior recovery a concentration step is carried out. To foster the recovery and utilization of nitrogen compounds, this contribution describes the challenges and chances of current approaches.

AB - This contribution illustrates the potential of nitrogen-rich by-products and waste streams as sources for proteins and amino acids. Furthermore, applications of recovered nitrogen compounds in food and feed as well as non-food and non-feed products have been illuminated. It has been shown that, for instance, cheese, yoghurt, and whey have essential amino acid content above 40% (w/w) of the total amino acid pool. Pumpkin seed pie, hops and sea buckthorn seeds, although the protein content can be more than 20% (w/w) crude protein in dry matter, show a rather poor essential amino acid profile. It should be admitted here that even streams containing diluted amounts of nitrogen compounds such as wastewater should be used. This, however, may only be economically feasible when prior recovery a concentration step is carried out. To foster the recovery and utilization of nitrogen compounds, this contribution describes the challenges and chances of current approaches.

KW - Amino acids

KW - Bioeconomy

KW - Biomass

KW - Proteins

KW - Resource efficiency

KW - Biology

UR - http://www.scopus.com/inward/record.url?scp=85152603098&partnerID=8YFLogxK

U2 - 10.1016/j.cogsc.2023.100813

DO - 10.1016/j.cogsc.2023.100813

M3 - Scientific review articles

AN - SCOPUS:85152603098

VL - 41

JO - Current Opinion in Green and Sustainable Chemistry

JF - Current Opinion in Green and Sustainable Chemistry

SN - 2452-2236

M1 - 100813

ER -