Valorization of poultry slaughterhouse waste for fertilizer purposes as an alternative for thermal utilization methods

Izydorczyk, Grzegorz; Mikula, Katarzyna; Skrzypczak, Dawid; Witek‐Krowiak, Anna; Mironiuk, Małgorzata; Furman, Katarzyna; Gramza, Mateusz; Μουστάκας, Κωνσταντίνος; Chojnacka, Katarzyna

doi:10.1016/j.jhazmat.2021.127328

Cited by 25 publications

(11 citation statements)

References 39 publications

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“…Izydorczyk et al. (2022) used thermal solubilization to valorize this waste and convert it into a liquid fertilizer; the method proposed is an effective but very expensive means of valorization. Asses et al.…”

Section: Introductionmentioning

confidence: 99%

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Ozi

Boutaleb

Hadidi

et al. 2022

Environmental Quality Mgmt

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This research work consists on valorizing poultry waste by biotransformation into biofertilizers, associating this agro‐industrial waste with algae (abundant natural resources) and molasses (a by‐product of the sugar refining industry) ensuring a good contribution of nutritional chemical elements and obtaining a balanced formulation. A total of seven different formulations of the above three components, were examined in a simplex centroid design. A fungal inoculum of Aspergillus niger was used as a fermentation agent for better quality of biotransformation. The monitoring of this biotransformation is ensured during 15 days by following the evolution of physicochemical and microbiological parameters and, to understand the bioconversion of the simple compounds of the biofertilizer mixture such as short aliphatic chains, sugar, and amino acids into soluble mineral compounds, a Fourier transform infrared spectroscopy (FTIR) analysis was carried out before and after biotransformation. Finally, germination and fertilization tests were performed to evaluate the efficiency of the final product on a barley crop. The overall results of the present study showed that the mixture which contained 68.75% poultry waste, 12.5% molasses, and 18.75% algae presented the better microbiological and chemical safety criteria required for a good biofertilizer according to NF U44‐551 standard.

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Section: Introductionmentioning

confidence: 99%

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Ozi

Boutaleb

Hadidi

et al. 2022

Environmental Quality Mgmt

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“…Hence, these untapped residues must be subjected to reuse strategies in line with circular economy principles, with the aim of reducing their accumulation and pollution. Moreover, this will lead to the development of new added-value products such as fertilizers [ 30 , 31 ], biogas [ 32 , 33 ], textile materials (keratin from feathers) [ 34 ], and functional foods based on chicken proteins, hydrolysates, and peptides that exert biological activities such as the ability to reduce HTN risk [ 35 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

Valorization of Chicken Slaughterhouse Byproducts to Obtain Antihypertensive Peptides

et al. 2023

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Hypertension (HTN) is the leading cause of premature deaths worldwide and the main preventable risk factor for cardiovascular diseases. Therefore, there is a current need for new therapeutics to manage this condition. In this regard, protein hydrolysates containing antihypertensive bioactive peptides are of increasing interest. Thus, agri-food industry byproducts have emerged as a valuable source to obtain these hydrolysates as they are rich in proteins and inexpensive. Among these, byproducts from animal origin stand out as they are abundantly generated worldwide. Hence, this review is focused on evaluating the potential role of chicken slaughterhouse byproducts as a source of peptides for managing HTN. Several of these byproducts such as blood, bones, skins, and especially, chicken feet have been used to obtain protein hydrolysates with angiotensin-converting enzyme (ACE)-inhibitory activity and blood pressure-lowering effects. An increase in levels of endogenous antioxidant compounds, a reduction in ACE activity, and an improvement of HTN-associated endothelial dysfunction were the mechanisms underlying their effects. However, most of these studies were carried out in animal models, and further clinical studies are needed in order to confirm these antihypertensive properties. This would increase the value of these byproducts, contributing to the circular economy model of slaughterhouses.

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“…To produce biofertilizers using keratin-containing materials, microbial treatment of keratins is feasible (Tamreihao et al, 2019 ; Nnolim et al, 2020b ; Izydorczyk et al, 2022 ). The strains used in treatment need to be identified or selected from strain libraries.…”

Section: Perspectivesmentioning

confidence: 99%

Perspectives on Converting Keratin-Containing Wastes Into Biofertilizers for Sustainable Agriculture

2022

Front. Microbiol.

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Keratin-containing wastes become pollution to the environment if they are not treated properly. On the other hand, these wastes can be converted into value-added products applicable to many fields. Organic fertilizers and biofertilizers are important for sustainable agriculture by providing nutrients to enhance the growth speed of the plant and production. Keratin-containing wastes, therefore, will be an important resource to produce organic fertilizers. Many microorganisms exhibit capabilities to degrade keratins making them attractive to convert keratin-containing wastes into valuable products. In this review, the progress in microbial degradation of keratins is summarized. In addition, perspectives in converting keratin into bio- and organic fertilizers for agriculture are described. With proper treatment, feather wastes which are rich in keratin can be converted into high-value fertilizers to serve as nutrients for plants, reduce environmental pressure and improve the quality of the soil for sustainable agriculture.

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Valorization of poultry slaughterhouse waste for fertilizer purposes as an alternative for thermal utilization methods

Cited by 25 publications

References 39 publications

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Production of bio‐fertilizer by biotransformation of poultry waste enriched with molasses and algae

Valorization of Chicken Slaughterhouse Byproducts to Obtain Antihypertensive Peptides

Perspectives on Converting Keratin-Containing Wastes Into Biofertilizers for Sustainable Agriculture

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