Cellular meat and advancements in vegan processed foods
Advances in farming technology and intensification of animal agriculture increase the cost-efficiency and production volume of meat. Thus, in developed nations, meat is relatively inexpensive and accessible. While beneficial for consumer satisfaction, intensive meat production inflicts negative externalities on public health, the environment and animal welfare. In response, groups within academia and industry are working to improve the sensory characteristics of plant-based meat and pursuing nascent approaches through cellular agriculture methodology (i.e., cell-based meat).
CBM experts indicate that key flavour profiles can be achieved by co-cultures, medium supplementation, and/or genetic modification. For instance, researchers have explored the effects of supplementing CBM with extracellular heme proteins (e.g., myoglobin). Myoglobin is associated with the “bloody” flavour of meat and supplementation was observed to improve the colour of CBM constructs without impeding muscle cell growth rates. Early cell-based prototypes emulate processed meat (e.g., burgers, sausages, nuggets) as it is more difficult to emulate the appearance and texture of whole cuts of meat (e.g., steak). As researchers in the field begin to focus on textural properties, significant effort will be required to evaluate myriad factors (e.g., cell to scaffold ratio, the impact of cooking, packaging, storage, and shipping) on tissue structure. CBM texture can be influenced both by cultured cells and supportive scaffolding materials. In vitro skeletal muscle tissue can be engineered to emulate the structure of meat by employing differentiation and cell alignment strategies. For example, mechanical tension, electrical stimulation, and/or micropatterned substrates can be employed to induce cell alignment in vitro. A recent study focused on CBM composed of bovine cells coupled with a textured soy protein scaffold; finding some of the samples exhibited texture (i.e., ultimate tensile strength) properties similar to those of native bovine muscle. In addition, a sensory panel tasted the CBM samples and described “a pleasant meaty flavour” and “a typical meat bite and texture”.


