Comprehensive Review on Extrusion-Based 3D Food Printing

Extrusion-based food printing, is a digitally-controlled extrusion process unlike from food extrusion cooking. It is to build up complex 3D food products layer by layer. Currently, it is one of the innovative method in the area of Food printing. The food printing can provide key solutions for digitalized food design as well as targeted nutrition control as per different needs and application. Different methods are employed for 3D Food printing such as selective laser sintering/hot air sintering, hot-melt extrusion/ room temperature extrusion, binder jetting, and ink jet printing. Among the available methods, extrusion-based 3D food printing is the one of the most widely adopted and applied method. The ideal end result of extrusion-based 3D food printing is to achieve a comparable or superior the present time. Geometric output to that attainable with conventional food extrusion processing but with this output obtained through digitalized design while also incorporating personalized nutrition control. Single or multi nozzles can be used to hierarchically print products to meet consumer demands generating unique tastes, extrinsic features and tailored nutritional profiles. This paper gives in detail about extrusion 3d printing, different mechanics involved, pretreatment and post treatments required. Food safety and design considerations, consumer acceptance and role of food ingredients, applications and developments . Keywords: 3 D printing, food extrusion, syringe based, screw based extrusion, food design.