Microbial valorization of underutilized and nonconventional waste streams

Lad, Beena C.; Coleman, Sarah M.; Alper, Hal S.

doi:10.1093/jimb/kuab056

Cited by 22 publications

(4 citation statements)

References 141 publications

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“…Other kinds of fermentation can also be used to treat waste streams and convert them into valuable products, , including pharmaceuticals, nutrients, nutraceuticals, surfactants, oils, polymers, and other chemicals as well as into bioethanol . Various kinds of microorganisms can be used in fermentation operations, including bacteria, yeasts, and fungi .…”

Section: Waste Reduction and Upcyclingmentioning

confidence: 99%

Designing a More Sustainable and Environmentally Friendly Food Supply: A Roadmap for Future Food and Agricultural Research

McClements

2024

ACS Sustainable Resour. Manage.

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There is an urgent need to change the way we produce, distribute, and consume foods due to several adverse effects the modern food supply is having on the environment, including greenhouse gas emissions, pollution, freshwater use, land use, and biodiversity loss. Concerted efforts are therefore required by food scientists around the world to generate the scientific knowledge and technological advances needed to develop a more sustainable global food supply chain. The purpose of this article is to highlight some of the most critical areas where research is needed to improve the sustainability and reduce the adverse environmental impact of food production. These areas include enhanced agricultural crops and livestock animals, improved fertilizers, pesticides, and antibiotics, reduced food and agricultural waste, conversion of waste streams into energy and valuable materials, alternative protein sources, and advanced food packaging materials, as well as many others. A range of advanced technologies is leading to important advances in many areas of food science and technology, including gene editing, nanotechnology, precision fermentation, biotechnology, and food architecture. An important objective of this article is to stimulate research and development in this important area so as to create a more sustainable and environmentally friendly global food supply system.

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Section: Waste Reduction and Upcyclingmentioning

confidence: 99%

Designing a More Sustainable and Environmentally Friendly Food Supply: A Roadmap for Future Food and Agricultural Research

McClements

2024

ACS Sustainable Resour. Manage.

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“…Bednarski et al (2004) investigated the potential of utilizing oil refinery waste streams as alternatives to vegetable oils to produce MELs. These wastes are consistently produced in large amounts at industrial lipid refineries and has therefore been identified as a reliable substrate which can potentially be utilized for the production of MELs (Lad et al, 2022). During the study, P. antarctica ATCC 20509 cultures were supplemented with either 50−120 g/L soap stock or 20−50 g/L post‐refinery fatty acids.…”

Section: Production Of Melsmentioning

confidence: 99%

A review on the upstream production and downstream purification of mannosylerythritol lipids

Valkenburg,

Ncube,

Teke

et al. 2023

Biotech & Bioengineering

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Biosurfactants are natural compounds with remarkable surface‐active properties that may offer an eco‐friendly alternative to conventional surfactants. Among them, mannosylerythritol lipids (MELs) stand out as an intriguing example of a glycolipid biosurfactant. MELs have been used in a variety of sectors for various applications, and are currently commercially produced. Industrially, they are used in the pharmaceutical, cosmetic, food, and agricultural industries, based on their ability to reduce surface tension and enhance emulsification. However, despite their utility, their production is comparatively limited industrially. From a bioprocessing standpoint, two areas of interest to improve the production process are upstream production and downstream (separation and purification) product recovery. The former has seen a significant amount of research, with researchers investigating several production factors: the microbial species or strain employed, the producing media composition, and the production strategy implemented. Improvement and optimization of these are key to scale‐up the production of MELs. On the other hand, the latter has seen comparatively limited work presented in the literature. For the most part traditional separation techniques have been employed. This systematic review presents the production and purification methodologies used by researchers by comprehensively analyzing the current state‐of‐the‐art with regards the production, separation, and purification of MELs. By doing so, the review presents different possible approaches, and highlights some potential areas for future work by identifying opportunities for the commercialization of MELs.

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“…In recent years, the amount of organic and biomass waste has been steadily increasing. Currently, sewage sludge is a burden for municipal wastewater treatment plants ( Lad et al, 2022 ). Moreover, acid whey, a by-product of Greek yoghurt, cottage cheese production, and the like, poses a risk to the ecosystem and its disposal is associated with a fee ( Erickson, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of short- and medium-chain fatty acid mixture on polyhydroxyalkanoate production by Pseudomonas strains grown under different culture conditions

Szacherska

Moraczewski

Czaplicki

et al. 2022

Front. Bioeng. Biotechnol.

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Short- and medium-chain fatty acids (SMCFAs) derived from the acidogenic anaerobic mixed culture fermentation of acid whey obtained from a crude cheese production line and their synthetic mixture that simulates a real SMCFA-rich stream were evaluated for polyhydroxyalkanoate (PHA) production. Three individual Pseudomonas sp. strains showed different capabilities of growing and producing PHAs in the presence of a synthetic mixture of SMCFAs. Pseudomonas sp. GL06 exhibited the highest SMCFA tolerance and produced PHAs with the highest productivity (2.7 mg/L h). Based on these observations, this strain was selected for further investigations on PHA production in a fed-batch bioreactor with a SMCFA-rich stream extracted from the effluent. The results showed that PHA productivity reached up to 4.5 mg/L h at 24 h of fermentation together with the ammonium exhaustion in the growth medium. Moreover, the PHA monomeric composition varied with the bacterial strain and the type of the growth medium used. Furthermore, a differential scanning calorimetric and thermogravimetric analysis showed that a short- and medium-chain-length PHA copolymer made of 3-hydroxybutyric, -hexanoic, -octanoic, -decanoic, and -dodecanoic has promising properties. The ability of Pseudomonas sp. to produce tailored PHA copolymers together with the range of possible applications opens new perspectives in the development of PHA bioproduction as a part of an integrated valorization process of SMCFAs derived from waste streams.

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Microbial valorization of underutilized and nonconventional waste streams

Cited by 22 publications

References 141 publications

Designing a More Sustainable and Environmentally Friendly Food Supply: A Roadmap for Future Food and Agricultural Research

Designing a More Sustainable and Environmentally Friendly Food Supply: A Roadmap for Future Food and Agricultural Research

A review on the upstream production and downstream purification of mannosylerythritol lipids

Effect of short- and medium-chain fatty acid mixture on polyhydroxyalkanoate production by Pseudomonas strains grown under different culture conditions

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