Sustainable Protein Alternatives: Exploring Plant-Based, Microbial and Novel Protein Sources

Population growth, changes in diets and sustainability issues support the global demand for protein. Animal-based protein sources are responsible for substantial amounts of greenhouse gas emissions, deforestation and water wastage, urging the assessment of sustainable alternatives. Plant proteins, extracted from soy, peas, lentils and other legumes, have a smaller carbon footprint and health advantages less saturated fat and cholesterol. Laboratories are creating proteins from microbes, algae and insects and lab-grown meat, with all sorts of pros and cons about each medication. Screens have been developed for alternative proteins like corn starch, wheat starch, pea starch, potato starch, etc. Machines such as high moisture extruders, fermenters and extractors have developed and improved their capabilities, which has decreased their cost over time. The system cost is increased, but the product quality, functionality and palatability have improved, making it comparable to animal-based sources. But challenges remain in the form of consumer acceptance, expensive manufacturing processes and regulatory complexities that continue to slow their mass-production implementation. Combating these challenges may take multiple forms, from researching better protein in terms of quality and digestibility, to policy changes that promote new protein marketplaces, to consumer education around environmentally and health beneficial protein selections. To fulfil the nutrition needs of a global population in an ecologically-friendly manner moving forward, the food systems will need to include plant-based and novel sources of protein. For those who hear of alternative proteins and think it is a far-off trend over the horizon, an insufficient presence to solve large-scale hunger and climate challenges, think again. The current study examines the options, advantages and drawbacks of alternative proteins, a field that requires ongoing investigation and policy framing to help define the course of the global nutrition narrative.