Sustainable approach to polystyrene management and bioinsecticide production: Biodegradation by Tenebrio molitor larvae co-fed with residual biomass and bioactivity of frass pyrolysis bio-oil against insect pests. | LitMetric
Instituto de Ciencias Biológicas Y Biomédicas del Sur, INBIOSUR (CONICET-UNS), San Juan 671, 8000 Bahía Blanca, Argentina; Departamento de Biología, Bioquímica Y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, 8000 Bahía Blanca, Argentina. Electronic address:
Published: December 2024
AI Article Synopsis
Article Abstract
Tenebrio molitor has gained attention as a potential solution for plastic pollution. This study explored the biodegradation of polystyrene (PS) by mealworms co-fed with rice bran (RB) under an optimized rearing scheme. The RB co-diet significantly increased PS consumption by two-fold compared to wheat bran (WB). Additionally, RB supported mealworm growth with favorable survival and feed conversion rates. Protein content of mealworms remained unchanged with PS plus RB, while significantly increased lipid stores and improved the fatty acid profile. Frass from PS (1) and biomass (2) intake was subjected to pyrolysis. Bio-oils from frass 2 exhibited insecticidal activity against Plodia interpunctella adults and Culex pipiens pipiens larvae. Finally, bio-oils demonstrated low toxicity to the aquatic non-target species Artemia salina, with up to three-fold selectivity towards Cx. p. pipiens. These findings highlight RB's role in PS management and the potential application of bio-oil as bioinsecticide.
Instituto de Ciencias Biológicas Y Biomédicas del Sur, INBIOSUR (CONICET-UNS), San Juan 671, 8000 Bahía Blanca, Argentina; Departamento de Biología, Bioquímica Y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, 8000 Bahía Blanca, Argentina. Electronic address:
Tenebrio molitor has gained attention as a potential solution for plastic pollution. This study explored the biodegradation of polystyrene (PS) by mealworms co-fed with rice bran (RB) under an optimized rearing scheme. The RB co-diet significantly increased PS consumption by two-fold compared to wheat bran (WB).
The objective of this study was to investigate the chemical composition of Syzygium aromaticum essential oil (SAEO), both as its toxicity and biological activities on Corynebacterium diphtheriae. The essential oil (EO) was obtained by hydrodistillation and verified by GC-MS. The main chemical components were eugenol (48.
Edible insects are attracting increasing interest as sustainable alternative protein sources. Despite being considered a safe food for most population, their consumption can pose health risks for allergic patients. This work focused on isolating proteins from the four-European Union approved insects (Tenebrio molitor, Alphitobius diaperinus, Acheta domesticus, and Locusta migratoria) and evaluating their potential immunoglobulin E (IgE)-reactivity with crustacean-allergic patients' sera.
During defatted (TM) larvae powder production, oil is obtained as a by-product, mainly intended for feed enrichment or as a biofuel component. In 2021, EFSA authorized TM as the first insect to be a novel food. Thus, the study aimed to assess the composition, including fatty acids (FAs), tocopherols, carotenoids, phenolics, volatiles, antioxidant capacity, sensory aroma attributes, physical properties, and oxidative and hydrolytic stability of TM oil.
