Abstract
The aim of this study was to perform a Life Cycle Assessment of a production process of 1 kg dry algal biomass powder (Galdieria sulphuraria) with 27 % (w/w) protein content for human consumption for optimizing the production regarding global warming potential and resource efficiency in combination with food waste utilization. It was investigated, underpinned by a comparison of the use of conventional glucose, whether and to what extent the environmental impact/global warming potential can be reduced by changing to food waste hydrolysate and how this can lead to a more sustainable use of resources and a sustainable development. Overall, the results showed that hydrolysis, along with freeze-drying, caused most of the overall impact. The carbon footprint associated with the use of hydrolyzed food waste was 11% higher than using conventional glucose and supplementary nutrients mainly driven by the high demand of energy for hydrolysis.
| Original language | English |
|---|---|
| Article number | 125637 |
| Journal | Bioresource Technology |
| Volume | 340 |
| Number of pages | 7 |
| ISSN | 0960-8524 |
| DOIs | |
| Publication status | Published - 01.11.2021 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy -
SDG 8 Decent Work and Economic Growth -
SDG 12 Responsible Consumption and Production
Research areas and keywords
- Bioeconomy
- Food waste
- LCA
- Nutrient recovery
- Proteins
- Biology
ASJC Scopus Subject Areas
- Waste Management and Disposal
- Bioengineering
- Environmental Engineering
- Renewable Energy, Sustainability and the Environment
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