Spent Coffee Grounds and Novaluron Are Toxic to Aedes aegypti (Diptera: Culicidae) Larvae

Thanasoponkul, Waralee; Changbunjong, Tanasak; Sukkurd, Rattanavadee; Saiwichai, Tawee

doi:10.3390/insects14060564

Cited by 2 publications

(2 citation statements)

References 52 publications

(60 reference statements)

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“…Although no significant increase in the weight of the larvae was recorded, it is noteworthy that the weight of the larvae did not decline due to selective feeding [35]. This result opens new avenues in insect rearing, given that both domestically and scientifically SCGs and their various extracts act as a repellent for insects such as mosquitoes [36,37].…”

Section: Survival and Growth Of Tm Larvaementioning

confidence: 81%

Utilization of Spent Coffee Grounds as a Feed Additive for Enhancing the Nutritional Value of Tenebrio molitor Larvae

Kotsou,

Chatzimitakos,

Athanasiadis

et al. 2023

Sustainability

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Increasing demand for sustainable protein sources has spurred interest in the exploration of alternative protein sources with a reduced environmental impact. This study investigates the use of spent coffee grounds (SCG), a widely available by-product, as a feed additive for Tenebrio molitor larvae, aiming to contribute to the circular economy and enhance the nutritional quality of the insects. The larvae were fed with a mixture of bran (the conventional feed) and SCGs (10 and 25% w/w). Larval viability, growth, and nutritional composition, including protein, fat, carbohydrates, ash, carotenoids, vitamins A and C, and polyphenols, were evaluated. Increasing the proportion of SCGs in the larvae’s feed led to an enhanced nutritional value of the larvae. In particular, crude protein increased by 45.26%, vitamin C showed an increase of 81.28%, and vitamin A showed an increase of 822.79%, while polyphenol content increased by 29.01%. In addition, the oil extracted from these larvae showed enhanced nutritional value and greater resistance to oxidation. The results highlight the promising use of SCGs as a feed additive for T. molitor larvae, offering a sustainable approach to enhance their nutritional value. Delving deeper into the results, the addition of 10% SCGs resulted in a 45.26% increase in crude protein compared to the SCG0 sample. Concurrently, increasing SCGs in the dietary substrate led to an increase in vitamin content; in sample SCG25, vitamin C content increased by 81.28% while vitamin A content increased by 822.79% compared to the control sample. Moreover, there was a large increase in polyphenol content with the SCG25 sample showing the highest value, which was a 29.01% increase over the control sample.

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Section: Survival and Growth Of Tm Larvaementioning

confidence: 81%

Utilization of Spent Coffee Grounds as a Feed Additive for Enhancing the Nutritional Value of Tenebrio molitor Larvae

Kotsou,

Chatzimitakos,

Athanasiadis

et al. 2023

Sustainability

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“…50 and LC 90 values presented by Centaurea ensiformis, Origanum hypericifolium, Paeonia turcica plant extracts; LCL-lower limit (95% con dence limit); UCL-upper limit (95% con dence limit). * p ≤ 0.05, level of signi cance of chi-square values.…”

mentioning

confidence: 99%

Larvicidal and Antibiofilm Potential of Three Mountain Plants: Centaurea ensiformis, Origanum hypericifolium, Paeonia turcica

bursalı,

Boncooğlu,

Touray

et al. 2024

Preprint

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Plants are known to produce a diverse group of natural metabolites with different biological activities. Centaurea ensiformis P.H. Davis, Origanum hypericifolium O. Schwartz & P.H. Davis and Paeonia turcica Davis & Cullen are endemic plant species that grow on mountains in select regions in Türkiye and have been used in traditional Turkish medicine for various ailments. As a first, we evaluated the larvicidal and antibiofilm activities of ethanol, ethyl acetate, acetone and water extracts obtained from these plants. Antioxidant activities of the extracts were also investigated. All tested extracts were effective at concentrations > 25ppm on Aedes aegypti larval mortality with the LC50 values ranging between of 32.82–48.35 ppm and LC90 between 46.26–63.2 ppm. O. hypericifolium was the most effective plant, ethanol extracts presented LC50 values of 32.82 ppm. Extracts demonstrated varying degrees of antibiofilm activity depending on the dose and bacterial species. Origanum hypericifolium extracts notably inhibited biofilms of Staphylococcus aureus (up to 98% inhibition), while P. turcica showed moderate efficacy against the same bacterial species. Pseudomonas aeruginosa biofilms displayed high resistance to all extracts. The results indicate that these endemic Turkish plants possess promising larvicidal and antibiofilm potential, particularly Origanum hypericifolium. Further research should elucidate the bioactive compounds responsible for these activities, optimize extraction methods, and explore potential applications in mosquito control and biofilm-related infections.

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Spent Coffee Grounds and Novaluron Are Toxic to Aedes aegypti (Diptera: Culicidae) Larvae

Cited by 2 publications

References 52 publications

Utilization of Spent Coffee Grounds as a Feed Additive for Enhancing the Nutritional Value of Tenebrio molitor Larvae

Utilization of Spent Coffee Grounds as a Feed Additive for Enhancing the Nutritional Value of Tenebrio molitor Larvae

Larvicidal and Antibiofilm Potential of Three Mountain Plants: Centaurea ensiformis, Origanum hypericifolium, Paeonia turcica

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