scholarly journals Odorants of Capsicum spp. Dried Fruits as Candidate Attractants for Lasioderma serricorne F. (Coleoptera: Anobiidae)

Insects ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 61
Author(s):  
Salvatore Guarino ◽  
Sara Basile ◽  
Mokhtar Abdulsattar Arif ◽  
Barbara Manachini ◽  
Ezio Peri
Keyword(s):  
Polar Compounds ◽  
Food Storage ◽  
Lasioderma Serricorne ◽  
Monitoring Methods ◽  
Volatile Organic ◽  
Dried Fruit ◽  
Capsicum Spp ◽  
Fruit Powder ◽  
Monitoring Traps ◽  
Storage Pest

The cigarette beetle, Lasioderma serricorne F. (Coleoptera: Anobiidae) is an important food storage pest affecting the tobacco industry and is increasingly impacting museums and herbaria. Monitoring methods make use of pheromone traps which can be implemented using chili fruit powder. The objective of this study was to assess the response of L. serricorne to the volatile organic compounds (VOCs) from different chili powders in order to identify the main semiochemicals involved in this attraction. Volatiles emitted by Capsicum annuum, C. frutescens, and C. chinense dried fruit powders were tested in an olfactometer and collected and analyzed using SPME and GC-MS. Results indicated that C. annuum and C. frutescens VOCs elicit attraction toward L. serricorne adults in olfactometer, while C. chinense VOCs elicit no attraction. Chemicals analysis showed a higher presence of polar compounds in the VOCs of C. annuum and C. frutescens compared to C. chinense, with α-ionone and β-ionone being more abundant in the attractive species. Further olfactometer bioassays indicated that both α-ionone and β-ionone elicit attraction, suggesting that these compounds are candidates as synergistic attractants in pheromone monitoring traps for L. serricorne.

scholarly journals EVALUATION OF ANTI-HYPERLIPIDEMIC ACTIVITY OF CAPSICUM FRUTESCENS EXTRACT

2017 ◽  
Vol 9 (4) ◽  
pp. 165
Author(s):  
Licto Thomas ◽  
Jagadish Vasudev Kamath
Keyword(s):  
Liquid Phase ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Acetone Extract ◽  
Low Density ◽  
Phase Extraction ◽  
Capsicum Frutescens ◽  
Dried Fruit ◽  
Fruit Powder

Objective: The objective of the study was to evaluate the in-vivo anti-hyperlipidemic activity of Capsicum frutescens extracts.Methods: The dried fruit powder were extracted with a three liquid phase extraction system. The acetone extract was isolated and the anti-hyperlipidemic activity was evaluated.Results: The anti-hyperlipidemic study was carried out by inducing hyperlipidemia in rats by means of triton. The serum collected was analyzed for total cholesterol, triglyceride, low-density lipoprotein and high-density lipoprotein.Conclusion: The result of the present study revealed that the acetone extract of the fruits of Capsicum frutescens possess anti-hyperlipidemic activity.

Genetic variability in the natural populations of Lasioderma serricorne (F.) (Coleoptera: Anobiidae), detected by RAPD markers and by esterase isozymes

2015 ◽  
Vol 106 (1) ◽  
pp. 47-53 ◽  
Author(s):  
T. Coelho-Bortolo ◽  
C.A. Mangolin ◽  
A.S. Lapenta
Keyword(s):  
Genetic Variability ◽  
Random Amplified Polymorphic Dna ◽  
Natural Populations ◽  
Electrophoretic Analysis ◽  
Effective Control ◽  
Lasioderma Serricorne ◽  
Control Programs ◽  
Dried Fruit ◽  
High Level ◽  
High Degree

AbstractLasioderma serricorne (F.) is a small cosmopolitan beetle regarded as a destructive pest of several stored products such as grains, flour, spices, dried fruit and tobacco. Chemical insecticides are one of the measures used against the pest. However, intensive insecticide use has resulted in the appearance of resistant insect populations. Therefore, for the elaboration of more effective control programs, it is necessary to know the biological aspects of L. serricorne. Among these aspects, the genetic variability knowledge is very important and may help in the development of new control methods. The objective of this study was to evaluate the genetic variability of 11 natural populations of L. serricorne collected respectively in three and four towns in the states of Paraná and São Paulo, Brazil, using 20 primers random amplified polymorphic DNA (RAPD) and polymorphisms of esterases. These primers produced 352 polymorphic bands. Electrophoretic analysis of esterases allowed the identification of four polymorphic loci (Est-2, Est-4, Est-5 and Est-6) and 18 alleles. Results show that populations are genetically differentiated and there is a high level of genetic variability within populations. The high degree of genetic differentiation is not directly correlated to geographical distance. Thus, our data indicate that movement of infested commodities may contribute to the dissemination of L. serricorne, facilitating gene flow.

Composite Material Sensitive to Volatile Organic Compounds

2012 ◽  
Vol 730-732 ◽  
pp. 289-294 ◽  
Author(s):  
Roberto R. Lima ◽  
Leonardo F. Hernandez ◽  
Edsion Pecoraro ◽  
Estevão Rosim-Fachini ◽  
Maria L.P. da Silva
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Chemical Structure ◽  
Electronic Devices ◽  
Polar Compounds ◽  
Signal Recovery ◽  
Silicon Compounds ◽  
Sensor Development ◽  
Volatile Organic ◽  
Electronic Behavior

This work evaluates fluorinated thin films and their composites for sensor development. Composites were produced using 5 µm starch particles and plasma films obtained from organic fluorinated and silicon compounds reactants. Silicon wafers and aluminum trenches were used as substrates. Film thickness, refractive index and chemical structure were also determined. Scanning electron microscopy shows conformal deposition on aluminum trenches. Films deposited on silicon were exposed to vapor of volatile organic compounds and CV curves were obtained. A qualitative model (FemLab 3.2® program) was proposed for the electronic behavior. These environmentally correct films can be used in electronic devices and preferentially reacted to polar compounds. Nonetheless, due to the difficulty in signal recovery, these films are more effective in one-way sensors, in sub-ppm range.

scholarly journals EVALUATION OF XANTHINE OXIDASE INHIBITORY ACTIVITY BY FLAVONOIDS FROM PONGAMIA PINNATA LINN

2017 ◽  
Vol 10 (3) ◽  
pp. 360 ◽  
Author(s):  
Vanishree Bambrana ◽  
Dayanand Cd ◽  
Sheela Sr
Keyword(s):  
Xanthine Oxidase ◽  
Plant Extracts ◽  
Inhibitory Activity ◽  
Mangifera Indica ◽  
Zingiber Officinale ◽  
Pongamia Pinnata ◽  
Morinda Citrifolia ◽  
Dried Fruit ◽  
Fruit Powder ◽  
Inhibitory Potential

ABSTRACTObjective: Flavonoids from the crude seeds extract of Pongamia pinnata L., dried fruit powder of Morinda citrifolia L., bark of Mangifera indica L., andrhizome of Zingiber officinale Rosc. were screened for xanthine oxidase (XO) inhibition at different concentration. The inhibitory potential of quercetinand allopurinol were used for the determination of 50% inhibitory concentration (IC50) and Ki values.Methods: Isolation of flavonoids from the plant extracts was processed by column chromatography and tested for XO inhibitory activity in the rangeof 6-800 μg/ml.Results: The results demonstrated that optimized flavonoids extract of P. pinnata L. exhibited promising XO inhibition. P. pinnata L., M. indica L., andZ. officinale Rosc. had IC50 in the concentration of 8.74 mM, 1.09 mM, 5.4 mM and Ki 0.35 mM, 1.73 mM, 2.7 mM, respectively.Conclusion: The study showed that plant species under investigation exhibited XO inhibition by optimized flavonoid extract. P. pinnata L. indicatedpromising XO inhibition compared to other plant extracts. Flavonoids can be used as a potent inhibitor of XO an alternative to allopurinol.Keywords: Xanthine oxidase, Quercetin, Allopurinol, Pongamia pinnata, Oxidative stress.

scholarly journals The Toxicological Aspects of the Heat-Borne Toxicant 5-Hydroxymethylfurfural in Animals: A Review

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1941 ◽  
Author(s):  
Mayada R. Farag ◽  
Mahmoud Alagawany ◽  
May Bin-Jumah ◽  
Sarah I. Othman ◽  
Asmaa F. Khafaga ◽  
...  
Keyword(s):  
Human Health ◽  
Elevated Temperatures ◽  
Food Products ◽  
Storage Conditions ◽  
Heat Processing ◽  
Food Storage ◽  
Maillard Reactions ◽  
Dried Fruit ◽  
Processing And Storage ◽  
And Storage

The incidence of adverse reactions in food is very low, however, some food products contain toxins formed naturally due to their handling, processing and storage conditions. 5-(Hydroxymethyl)-2-furfural (HMF) can be formed by hydrogenation of sugar substances in some of manufactured foodstuffs and honey under elevated temperatures and reduced pH conditions following Maillard reactions. In previous studies, it was found that HMF was responsible for harmful (mutagenic, genotoxic, cytotoxic and enzyme inhibitory) effects on human health. HMF occurs in a wide variety of food products like dried fruit, juice, caramel products, coffee, bakery, malt and vinegar. The formation of HMF is not only an indicator of food storage conditions and quality, but HMF could also be used as an indicator of the potential occurrence of contamination during heat-processing of some food products such as coffee, milk, honey and processed fruits. This review focuses on HMF formation and summarizes the adverse effects of HMF on human health.

scholarly journals Evaluation of a Hypercrosslinked Polystyrene, MN-200, as a Sorbent for the Preconcentration of Volatile Organic Compounds in Air

2000 ◽  
Vol 83 (3) ◽  
pp. 579-583 ◽  
Author(s):  
Maria P Baya ◽  
Panayotis A Siskos ◽  
Vadim A Davankov
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Polar Compounds ◽  
Average Percentage ◽  
Volatile Organic ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes ◽  
And Storage ◽  
Indoor And Outdoor

Abstract Breakthrough volumes, average percentage recoveries, and storage stabilities were obtained for vapors of 8 volatile organic compounds (pentane, octane, undecane, isooctane, cyclohexane, toluene, methanol, and dichloromethane) on a new adsorbent material, Hypersol-Macronet, MN-200. Breakthrough volumes were estimated as half of the gas chromatographic specific retention volumes at 20°C for the compounds. Recoveries of the adsorbates were determined by both solvent extraction and thermal desorption methods. The results obtained compare favorably with those for Tenax GR (values reported in the published literature and others obtained in our laboratory). Results of storage stability studies on MN-200 meet the criterion for acceptability (<10% loss). High adsorption capacity for very volatile and polar compounds, combined with ease of desorption of less volatile compounds, render MN-200 a highly promising adsorbent for sampling volatile organic compounds in indoor and outdoor air.

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