INSTRUCTION: Choose the CORRECT alternative to answer questions 21 to 23, according to TEXT 2.
TEXT 2 MAKE A DIFFERENCE BE A FOOD ENGINEER Food engineering is the application of engineering principles to the storage, processing and distribution of food materials and _____ bio-products. It requires a sound engineering education, as well as fundamental training in chemistry and food science. Food Engineers can make valuable contributions in various capacities of food chain such as design of processing, handling, packaging and storage equipment and systems; scale-up of prototype food processes, machinery, and equipment; product/process research and development; regulation and protection of the public health; and engineering and technical Sales. Fonte: http://baen.tamu.edu/foodengineering/FEngr/FEngr.html Acesso em: 15/10/2013. The correct word to fill in the space provided in “food materials and ____ bio-products.” from text 2 is