Our latest study delves deep into the world of insect frass, shedding light on its potential as a nutrient-rich organic fertilizer. By analyzing frass from black soldier fly, yellow mealworm, and Jamaican field cricket, we’ve discovered interesting variations in properties and nutrient concentrations, highlighting its effectiveness in enriching soil health and promoting plant growth. In addition, our research explores the impact of heat treatment on frass properties and microbiota, ensuring clean production practices. These findings not only revolutionize our understanding of insect frass but also pave the way for regulatory standards and its widespread adoption in agriculture.

Link to full study: doi.org/10.1016/j.jenvman.2024.120622

Graphical abstract - Physicochemical and microbiological assessment of frass from black soldier fly (BSF), yellow mealworm (YMW), and Jamaican field cricket (JFC) and the impact of heat treatment. TS = total solids, VS = volatile solids, C:N = carbon to nitrogen ratio, NH4+-N = ammonium nitrogen, NO2–NO3--N = nitrite and nitrate nitrogen, EC = electrical conductivity, TDS = total dissolved solids, MR = microbial respiration, Cmic = microbial biomass carbon, MQ = metabolic quotient. ns: p > 0.05, *: p ≤ 0.05, **: p ≤ 0.01, ***: p ≤ 0.001, ****: p ≤ 0.0001, STD-I = standard I nutrient agar, ooR = out of range, bdl = below detection limit..