The inclusion of fat and marbling in cultivated meat is likely to increase its flavor, texture, and consumer appeal. Structural approaches using edible microcarriers, hydrogels, and 3D bioprinting present promising options to support fat cell growth and reduce buoyancy in culture for integrating fat into cuts of meat, but more research is needed to optimize conditions.
Hybrid products are a promising means to introduce cost-competitive versions of cultivated meat to the market while improving the taste of plant proteins. Promoting the health benefits of hybrids may facilitate consumer acceptance, but more research is needed to identify the optimal ratios between plant-based and cultivated ingredients to increase nutrition without compromising flavor.
Meticulous attention to sterility controls throughout cultivated meat production is essential to optimize food safety, but the cost of biopharmaceutical-based sterility—the current standard for cell-based processes—is incongruent with large-scale food production. Research to identify alternative sterility processes with lower costs is needed for cultivated meat to scale successfully.
A variety of plant-based scaffolds present the opportunity to combine the natural nutritional and structural benefits of plants with the taste and high protein of cultivated meat. Bacterial nanocellulose from coconut water is a particularly promising scaffold material with its FDA approval status and beneficial nutritional and cell adhesion properties.
Cultivated seafood will need to be supplemented with long-chain omega-3 polyunsaturated fatty acids to be nutritionally equivalent or superior to conventional seafood. However, how these compounds can best be incorporated has not been determined, and there are several potentially-viable strategies. Further research is needed to determine which strategies are most cost-effective and scalable and whether there are appreciable differences between methods in the quality of the final product.
The manufacturing capacity for rapid and cost-effective scale-up of alternative protein production is a current constraint on the growth of the industry. Repurposing and retrofitting stranded or underutilized assets such as shuttered bioethanol plants can help mitigate some of the financial hurdles and shorten the amount of time required for companies to expand production.
Enabling easy animal ingredient substitutions in a wide range of food products.
Plant-based protein makerspaces would be publicly available spaces where interested members of the public could learn, experiment, and work collaboratively on projects related to plant-based proteins. They could offer access to the physical equipment necessary to conduct projects as well as technical assistance to inform them. The aim would be to encourage more interaction between the public and the alternative protein industry, thus stimulating the exploration and development of more ideas. Makerspaces may also be able to increase positive consumer perception of the technology by increasing familiarity with the relevant production processes. The logistics of the makerspace should be done in such a way to maximize democratization and inclusion of a large segment of the public.
Deeper fundamental knowledge of the causes and prevention of oxidation of omega-3 fatty acids before, during, and after addition to alternative seafood products is needed to improve their nutritional and organoleptic properties. While several approaches to prevent oxidation of unsaturated lipids in conventional seafood products have been developed, antioxidation methods must be tailored to the formulations and processing of alternative seafood products, or perhaps new methods must be developed altogether.
Fibers from non-traditional texturization techniques like electrospinning, jet spinning, or blow spinning could impart texture throughout a product even if they don’t comprise the bulk of the end product, which may render these approaches economically viable for enhancing texture within a bulk product even at a relatively small scale.
