BECAS
JESSER Emiliano NicolÁs
artículos
Título:
From waste to food and bioinsecticides: An innovative system integrating Tenebrio molitor bioconversion and pyrolysis bio-oil production
Autor/es:
URRUTIA, RODRIGO IÑAKI; JESSER, EMILIANO NICOLAS; GUTIERREZ, VICTORIA SOLEDAD; RODRIGUEZ, SILVANA; GUMILAR, FERNANDA; MURRAY, ANA PAULA; VOLPE, MARIA ALICIA; WERDIN-GONZÁLEZ, JORGE OMAR
Revista:
CHEMOSPHERE
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2023 vol. 340
ISSN:
0045-6535
Resumen:
To achieve a waste-free clean production, the present study aimed to valorize an underused agroindustrialbyproduct (rice bran) by mealworms bioconversion and produce bio-oil from pyrolysis of insect excreta (frass) asbioinsecticide. To reach the first goal, the suitability of rice bran (RB) versus standard diet, wheat bran (WB), wasexamined by determining feed conversion, growth performance, and nutritional profile of T. molitor larvae. RBdiet was an appropriate feed substrate for breeding mealworms, as evidenced by their high survival rates,optimal feed conversion parameters, and its capability to support the growth and life cycle of this insect. Besides,RB did not affect soluble larval protein content but modified crude fat content and fatty acid profile. In order toaddress the second aim, egested frass from RB and WB were subjected to pyrolysis to obtain bio-oils. The maincompound was acetic acid (≈37%) followed by 1,6-anhydro-β-d-glucopyranose (from 16 to 25%), as measuredby GC-MS analysis. Nitrogen-containing chemicals accounted for ≈10%. Frass bio-oils could represent a novelsource of bioinsecticides due to their bioeffectiveness in insect pests of economic importance (Plodia interpunctellaand Tribolium castaneum) and medical interest (Culex pipiens pipiens). For P. interpunctella adults, frass bio-oils
