Monday, December 10, 2007 - 2:59 PM
0684

Crude protein composition of sixteen species representing nine orders of insects

Mark E. Headings, headings.1@osu.edu, The Ohio State University, Agricultural Technical Institute, 1328 Dover Road, Wooster, OH and Shah Rahnema, Ohio State University, Agricultural Technical Institute, 1328 Dover Road, Wooster, OH.

Insects represent an under-utilized source of protein as food for certain other forms of life. The objective of this investigation was to quantify and compare protein levels in the bodies of sixteen species representing nine orders of insects. Orders included were: Blattodea, Heteroptera, Coleoptera, Orthoptera, Odonata, Lepidoptera, Isoptera, Hymenoptera and Dermaptera. Samples were analyzed for dry matter by heating dried ground samples in a drying oven at 100-105 degrees C for six hours. Nitrogen content was measured by using both a nitrogen analyzer and the Kjeldahl procedure. The crude protein level was highest in the Giant Madagascar hissing roach (at 91.37%) and lowest in the boxelder bug (at 45.76%). It has been reported that mopane worms contain 65.8% crude protein with 55.3% being in a digestible form. Further studies on the biological value (BV) of insect protein in mammals is warranted.


Species 1: Blattodea Blattellidae Gromphadorina portentosa (giant Madagascar hissing roach)
Species 2: Hemiptera Rhopalidae Boisea trivittata (boxelder bug)
Species 3: Coleoptera Scarabaeidae Popillia japonica (Japanese beetle)