Campylobacter infection is the most frequently reported notifiable food-borne disease in humans in Australia. Our studies investigated the persistence of Campylobacter spp. in or on darkling beetles (Alphitobius diaperinus) and their larvae. Our results in analyses with chickens confirm that, unless very short turnaround times are used (<72 h), beetles colonized in one production cycle (i.e., o...

Insects are considered a nutritionally valuable source of alternative proteins, and their efficient protein extraction is a prerequisite for large-scale use. The protein content is usually calculated from total nitrogen using the nitrogen-to-protein conversion factor (Kp) of 6.25. This factor overestimates the protein content, due to the presence of nonprotein nitrogen in insects. In this paper...

Two racemic and two enantiomeric pairs of new δ-hydroxy-γ-lactones based on the p-menthane system were prepared from racemic and optically active cis- and trans-piperitols. The Johnson-Claisen rearrangement of the piperitols, epoxidation of the γδ-unsaturated esters, and acidic lactonization of the epoxy esters were described. The structures of the compounds were confirmed spectroscopically. Th...

The aim of this study was to investigate the amino acid (AA) release from breads enrichment with edible insects, Alphitobius diaperinus and Tenebrio molitor or pea protein during in vitro gastrointestinal digestion. Bread enriched at 5 10% insect flour protein. Enriched control were subjected standardised static free AAs before after each phase digestion (gastric, intestinal end digestion) dete...

The lesser mealworm beetle, Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae), is an important insect pest. The insect acts as a disease vector and reservoir, negatively affecting the health of birds and humans, and harming poultry husbandry. Controlling the lesser mealworm is generally based on using synthetic chemical insecticides, which are sometimes ineffective, and is limited due...

Stored-product commodities are attacked by numerous insect species. The adulticidal effects of entomopathogenic nematodes (EPNs) on grains remain uninvestigated. Thus, in the current study, seven doses EPNs Heterorhabditis bacteriophora Poinar (Rhabditida: Heterorhabditidae), Steinernema carpocapsae (Weiser) Steinernematidae), and feltiae (Filipjev) Steinernematidae) were inoculated wheat kerne...

During 2008, a study has been conducted on the potential of Alphitobius diaperinus as a reservoir of many poultry pathogenic bacteria, in twenty broiler houses in the North-East of Algeria. Many groups of bacteria have been enumerated; Salmonella and thermophilic campylobacters contaminations have been searched. Both adults and larvae carried and harbored multiple species and numbers of poultry...