Identification of a Sex Pheromone From Male Yellow MealWorm Beetles, Tenebrio molitor

2005 ◽  
Vol 31 (11) ◽  
pp. 2721-2730 ◽  
Author(s):  
Gareth P. Bryning ◽  
John Chambers ◽  
Maureen E. Wakefield
Keyword(s):  
Sex Pheromone ◽  
Tenebrio Molitor ◽  
Yellow Mealworm

Biosynthesis and Secretion of Serine Peptidase SerP38 from Tenebrio molitor in the Yeast Komagataella kurtzmanii

2020 ◽  
Vol 36 (6) ◽  
pp. 78-86
Author(s):  
P.I. Akentyev ◽  
I.I. Gubaidullin ◽  
N.I. Zhiganov ◽  
V.F. Tereshchenkova ◽  
E.N. Elpidina ◽  
...  
Keyword(s):  
Culture Medium ◽  
Polypeptide Chain ◽  
Tenebrio Molitor ◽  
Enzyme Secretion ◽  
Trypsin Treatment ◽  
Yellow Mealworm ◽  
Serine Peptidase

A strain of the Komagataella kurtzmanii yeast, a producer of recombinant peptidase SerP38 from the yellow mealworm Tenebrio molitor, has been obtained. The level of the pro-enzyme secretion was 20-50 mg/L. It was shown that, during secretion in yeast, the target His6-tagged protein was produced in two forms. One of them was a monomer that was efficiently purified by Ni-NTA chromatography and then activated with trypsin. Another form accumulated in the culture medium as oligomers prone to aggregation in the presence of Ni2+ ions and was not activated by trypsin treatment. Aggregation is likely the result of incorrect folding of the polypeptide chain. Tenebrio molitor, S1 family serine peptidase, SerP38, yeast, Komagataella kurtzmanii, ion-dependent aggregation

scholarly journals Graded Incorporation of Defatted Yellow Mealworm (Tenebrio molitor) in Rainbow Trout (Oncorhynchus mykiss) Diet Improves Growth Performance and Nutrient Retention

Animals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 187 ◽  
Author(s):  
Paulo Rema ◽  
Subramanian Saravanan ◽  
Benjamin Armenjon ◽  
Constant Motte ◽  
Jorge Dias
Keyword(s):  
Body Composition ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Growth Performance ◽  
Tenebrio Molitor ◽  
Nutrient Digestibility ◽  
Protein Meal ◽  
Yellow Mealworm ◽  
Juvenile Rainbow Trout ◽  
Rainbow Trout Oncorhynchus Mykiss

Insects are emerging as a sustainable alternative to fishmeal and fish oil in aquafeeds. This study assessed the effect of graded incorporation levels of defatted yellow mealworm (Tenebrio molitor) protein meal on juvenile rainbow trout (Oncorhynchus mykiss) growth performance, body composition, and apparent nutrient digestibility. The trial comprised five dietary treatments: control diet with 25% fishmeal, and four experimental diets with yellow mealworm protein meal at 5%, 7.5%, 15%, or 25%, which corresponded to a fishmeal replacement of 20%, 30%, 60%, or 100%, respectively. After 90 days, the graded incorporation of insect protein meal led to a significant stepwise increase in final body weight, and a significant improvement of specific growth rate, feed conversion ratio, and protein efficiency ratio compared to the control treatment. Regardless of the incorporation level, the insect protein meal had no effects on fish whole-body composition and apparent digestibility coefficients of dry matter, protein, fat, phosphorus, and energy. Protein, phosphorus, and energy retention significantly increased in fish fed the diets with an insect protein meal. In conclusion, the yellow mealworm protein meal could effectively replace 100% of fishmeal in the diet of juvenile rainbow trout with positive effects on its overall zootechnical performance.

Optically pure acyclic bifunctional compounds from (?)-menthone. Synthesis ofR-4-methyl-1-nonanol, the sex pheromone of the larger flour beetle (Tenebrio molitor L.)

1993 ◽  
Vol 42 (7) ◽  
pp. 1244-1245 ◽  
Author(s):  
V. N. Odinokov ◽  
G. Yu. Ishmuratov ◽  
M. P. Yakovleva ◽  
R. L. Safiullin ◽  
V. D. Komissarov ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Tenebrio Molitor ◽  
Flour Beetle ◽  
Bifunctional Compounds ◽  
Optically Pure

Effects of vacuum and multiflash drying on the microbiota and colour of dried yellow mealworm (Tenebrio molitor)

2021 ◽  
pp. 1-12
Author(s):  
R.E.Y. Seho ◽  
R.L. Monteiro ◽  
J. De Dea Lindner ◽  
M. Miotto ◽  
B.A.M. Carciofi ◽  
...  
Keyword(s):  
Water Activity ◽  
Challenge Test ◽  
High Water ◽  
Tenebrio Molitor ◽  
Microbial Reduction ◽  
Microbial Load ◽  
Vacuum Drying ◽  
Drying Time ◽  
Yellow Mealworm ◽  
Food And Feed

Larvae of Tenebrio molitor (yellow mealworm; YM) are an alternative to conventional animal protein as food and feed thanks to their high nutritional value and low environmental impact for production. Since some studies have reported high water activity (aw) with different microbial contamination levels, blanching and drying can be employed to reduce microbial load, enzymatic activity, moisture content, and water activity, ensuring safety and preserving YM for longer periods. This study applied rinsing or blanching followed by vacuum- or multiflash drying, aiming to preserve YM by reducing aw and the microbial load, enabling its use as food and feed. The processing impact on YM colour was evaluated, and they were also subjected to an Escherichia coli contaminated wheat bran to perform a challenge test to evaluate the effectiveness of the decontamination. Drying curves were determined for each situation. Multiflash drying procedure was faster than vacuum drying for reducing YM moisture. Additionally, blanched samples required a shorter period to reach the targeted water activity (0.2-0.3) than rinsed samples. Blanching plus vacuum drying reduced more than 5 log E. coli load in YM in the challenge test. Vacuum drying preserved YM brightness the most. In conclusion, this study showed that drying could provide shelf-stable YM. Besides, only 15 s of blanching before drying gives better brightness and leads to a greater microbial reduction after a relatively short drying time.

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