Food waste to new food: Risk assessment and microbial community analysis of anaerobic digestate as a nutrient source in hydroponic production of vegetables

Södergren, Julia; Larsson, Christer; Wadsö, Lars; Bergstrand, Karl-Johan; Asp, Håkan; Hultberg, Malin; Schelin, Jenny

doi:10.1016/j.jclepro.2021.130239

Cited by 15 publications

(6 citation statements)

References 35 publications

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“…For instance, Golovko et al [ 114 ] estimated the risk associated with the widespread use of anaerobic digestates from biogas plants as fertilizers by characterizing the number of heavy metals, food-borne pathogens, antibiotic-resistant bacteria, antibiotics, pesticides, and other chemicals of emerging concern (CECs). A similar study by Södergren et al [ 115 ] assessed the microbiological safety of using the liquid digestate produced from the biogas plant for the hydroponic cultivation of vegetables.…”

Section: Discussionmentioning

confidence: 99%

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

Kiruba

Saeid

2022

IJMS

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The plant-microbe holobiont has garnered considerable attention in recent years, highlighting its importance as an ecological unit. Similarly, manipulation of the microbial entities involved in the rhizospheric microbiome for sustainable agriculture has also been in the limelight, generating several commercial bioformulations to enhance crop yield and pest resistance. These bioformulations were termed biofertilizers, with the consistent existence and evolution of different types. However, an emerging area of interest has recently focused on the application of these microorganisms for waste valorization and the production of “bio-organic” fertilizers as a result. In this study, we performed a bibliometric analysis and systematic review of the literature retrieved from Scopus and Web of Science to determine the type of microbial inoculants used for the bioconversion of waste into “bio-organic” fertilizers. The Bacillus, Acidothiobacillus species, cyanobacterial biomass species, Aspergillus sp. and Trichoderma sp. were identified to be consistently used for the recovery of nutrients and bioconversion of wastes used for the promotion of plant growth. Cyanobacterial strains were used predominantly for wastewater treatment, while Bacillus, Acidothiobacillus, and Aspergillus were used on a wide variety of wastes such as sawdust, agricultural waste, poultry bone meal, crustacean shell waste, food waste, and wastewater treatment plant (WWTP) sewage sludge ash. Several bioconversion strategies were observed such as submerged fermentation, solid-state fermentation, aerobic composting, granulation with microbiological activation, and biodegradation. Diverse groups of microorganisms (bacteria and fungi) with different enzymatic functionalities such as chitinolysis, lignocellulolytic, and proteolysis, in addition to their plant growth promoting properties being explored as a consortium for application as an inoculum waste bioconversion to fertilizers. Combining the efficiency of such functional and compatible microbial species for efficient bioconversion as well as higher plant growth and crop yield is an enticing opportunity for “bio-organic” fertilizer research.

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Section: Discussionmentioning

confidence: 99%

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

Kiruba

Saeid

2022

IJMS

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“…Due to its high nutrient content, the digestate is successfully used as an organic fertilizer in crop production, e.g., in the cultivation of solanaceous and leafy vegetables (Jin et al 2022 ) and maize (Zilio et al 2023 ), both in conventional and hydroponic cultivations (Södergren et al 2022 ). These studies underscore the value of the digestate from waste yeast as a nutrient source, reinforcing its potential for sustainable agriculture.…”

Section: Resultsmentioning

confidence: 99%

Recent innovations in fertilization with treated digestate from food waste to recover nutrients for arid agricultural fields

Skrzypczak,

Trzaska,

Mironiuk

et al. 2023

Environ Sci Pollut Res

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This study aims to explore the development of sustainable fertilizers from waste materials of a biogas plant and a brewery. These wastes, rich in organic carbon and nitrogen, were processed with sulfuric(VI) and phosphoric(V) acid mixture, facilitating the production of free amino acids and achieving waste sanitization. This treatment produced by-products, which extended the range of possible applications. The highest concentration of free amino acids (360 mg/l) was achieved through hydrolyzing with a 40% concentration medium over 24 h. In this case, the maximum levels were recorded for beta-alanine (69.3 mg/l), glycine (46.8 mg/l), isoleucine (43.5 mg/l), proline (36.2 mg/l), and valine (31.5 mg/l). The study presents two fertilizer technologies, with and without micronutrients, that satisfy European Parliament Regulation 2019/1009 (Ntot > 2%, Norg > 0.5%, Corg > 3%). Bioavailability of nutrients in the formulations ranged from 60 to 100%. The efficacies of these fertilizers were evaluated in 30-day pot trials with various plant species, with both single application and fertigation tested. Multielement analysis confirmed high nutrient transfer in the soil-plant system, and the inclusion of micronutrients led to biofortification of plant biomass in Cu (48.3 ± 7.2 mg/kg), Mn (249 ± 37 mg/kg), Zn (164 ± 25 mg/kg), and Fe (211 ± 32 mg/kg). These sustainable fertilizers present an alternative to traditional, non-renewable fertilizers and offer promising solutions for precision agriculture and environmentally conscious production. Graphical abstract

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“…The biofertilizer obtained from the valorization of household waste, slaughter residues, and some organic food waste does not support the growth of some pathogens such as S. enterica and L. monocytogenes even after supplementation with rich substrates in the waste sources containing carbon sources and other trace elements. 146 Therefore, this provides a promising alternate biofertilizer with crop safety.…”

Section: Safety Concerns Of Biofertilizers Obtained From the Valorisa...mentioning

confidence: 99%

Microbial bioconversion of food waste to bio-fertilizers

Mahish,

Verma,

Ghritlahare

et al. 2024

Sustainable Food Technol.

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Food waste to new food: Risk assessment and microbial community analysis of anaerobic digestate as a nutrient source in hydroponic production of vegetables

Cited by 15 publications

References 35 publications

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

An Insight into Microbial Inoculants for Bioconversion of Waste Biomass into Sustainable “Bio-Organic” Fertilizers: A Bibliometric Analysis and Systematic Literature Review

Recent innovations in fertilization with treated digestate from food waste to recover nutrients for arid agricultural fields

Microbial bioconversion of food waste to bio-fertilizers

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