Responses of phosphine susceptible and resistant strains of five stored-product insect species to chlorine dioxide

Xinyi, E; Subramanyam, Bhadriraju; Li, Beibei

doi:10.1016/j.jspr.2017.03.002

Cited by 19 publications

(3 citation statements)

References 31 publications

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“…Heterogeneous responses of adults could be due to health‐related or activity‐related differences in susceptibility as the amount and speed of achieved SAS by adult varied in the experiments. Heterogeneous responses in insects exposed to insecticides also yielded similar results …”

Section: Resultssupporting

confidence: 54%

Effect of synthetic amorphous silica powder on the cuticle of Tribolium castaneum and Sitophilus oryzae using hyperspectral imaging technique

Agarwal

Cao

et al. 2019

Pest Management Science

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BACKGROUND Synthetic amorphous silica (SAS) is safe for human consumption. SAS damages insect cuticles. Qualitative measurement of cuticle properties of insects affected by SAS is essential to understand the mode of action and develop new pesticides. A hyperspectral reflectance imaging approach was used to directly indicate the impact of SAS on the insect cuticle. RESULTS There were significant differences in the LT95 values of hydrophobic and hydrophilic SAS against Tribolium castaneum and Sitophilus oryzae (P < 0.01). T. castaneum was more susceptible to hydrophobic SAS while no difference was found for S. oryzae exposed to both SAS types. In a hyperspectral study, the ventral reflectance of control groups was higher than that of SAS‐treated groups in both visible and short‐wave near‐infrared wavelength ranges. The SAS‐treated groups showed much higher dorsal reflectance. The differences in absorption characteristics of cuticular fat and protein may contribute to the varied performance. The effects of both SASs on insect cuticles was significant, as the 100% recognition rate of the back propagation neural network models suggested. Consistent with the assumption that the efficacy was different between the two SAS types, the lowest rates of the model for two treatment groups were 62.2 and 73.3% in the target and output class. CONCLUSION The efficacy varied considerably between the two insect species and the two SASs. Hyperspectral image analyzing coupled with back propagation artificial neural network accurately recorded how SAS impacts the insect cuticle via the effective wavelengths. These findings showed that SAS is a promising candidate for new pesticide products. © 2019 Society of Chemical Industry

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Section: Resultssupporting

confidence: 54%

Effect of synthetic amorphous silica powder on the cuticle of Tribolium castaneum and Sitophilus oryzae using hyperspectral imaging technique

Agarwal

Cao

et al. 2019

Pest Management Science

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“…This also adds to convenient usage and cost efficiency by using less storage space, water, and electricity. Additionally, ClO 2 has demonstrated its antimicrobial effect against pathogenic bacteria ( Salmonella , E. coli , and L. monocytogenes ) on carrots, blueberries, tomatoes, peppercorn, almonds, and cumin seeds; against background microbial flora and coliforms on blueberries, and mycotoxigenic mold on coffee beans and animal feed (Bridges, Rane, & Wu, 2018; Chai, Hwang, Huang, Wu, & Sheen, 2020; Chai, Hwang, Huang, Wu, & Sheen, 2021; Fajri, Yu, Liaw, Chu, & Chen, 2017; Golden, Berrang, Kerr, & Harrison, 2019; Guan et al, 2021; Lee, Ryu, & Kim, 2020; Rane et al, 2021; Rane, Bridges, & Wu, 2020; Sy, McWatters, & Beuchat, 2005; Wei, Verma, Danao, Ponder, & Subbiah, 2021; Wu & Kim, 2007; Xinyi, Subramanyam, & Li, 2017). However, neither of the above studies observed the effect of gaseous ClO 2 on the reduction of background contamination present on whole black peppercorns.…”

Section: Introductionmentioning

confidence: 99%

Gaseous chlorine dioxide inactivation of microbial contamination on whole black peppercorns

Rane

Lacombe

Guan

et al. 2021

Journal of Food Safety

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Black peppercorn is a common ingredient imported and used in uncooked or ready‐to‐eat foods in the United States. They might be exposed to fecal coliforms and other microbial contamination due to a lack of good agricultural and manufacturing practices in some developing countries under which they were grown and harvested, thus causing economic losses to the peppercorn industry in the United States. We investigated the effect of gaseous chlorine dioxide (ClO2) on reducing the microbial population levels of coliforms, aerobic bacteria, yeasts, and molds on unprocessed black peppercorns. Treatments on peppercorns were conducted in a 30‐L airtight chamber, and equal amounts of dry media precursors were used to generate gaseous ClO2. Whole peppercorns (200 g) were exposed to 20, 30, and 40 g of precursor dose for up to 60 min at 21 ± 0.4°C and in combination with mild heat at 40 ± 2°C. Aerobic bacteria, coliforms, yeasts, and molds on peppercorns were enumerated before (7.4, 7.2, and 7.1 log CFU/g, respectively) and after treatments. Results after treatment demonstrated 0.8–1 log10 (90%) reduction for all the microbes post‐treatment at 21 ± 0.4°C. The treatments conducted with a 30 g precursor dose for 60 min at 21 ± 0.4°C reduced statistically higher (p < .05) microorganisms than those at 40 ± 2°C. Our work demonstrated that gaseous ClO2 could be used as a part of an overall hurdle technology to reduce the coliforms, aerobes, yeasts, and molds on black peppercorns without affecting the visual quality.

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“…introduced as alternatives to CH3Br use as soil fumigants (Mao et al, 2016;MBTOC, 2018). For QPS applications, phosphine has been widely used as a substitute for CH3Br in post-treatment of commodities, but it is known that some pests have developed resistance to phosphine (Jagadeesan and Nayak, 2017;Xinyi et al, 2017). SO2F2 is used in China as an alternative to non-QPS use of CH3Br for the pre-plant soil fumigation as well as the QPS disinfestation of some durable products and post-harvest commodities (Cao et al, 2014;Gressent et al, 2021).…”

Section: (Ii) Biomass Burningmentioning

confidence: 99%

Top-down and bottom-up estimates of anthropogenic methyl bromide emissions from eastern China

Choi

Park

Fraser

et al. 2021

Preprint

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Abstract. Methyl bromide (CH3Br) is a potent ozone-depleting substance (ODS) that has both natural and anthropogenic sources. CH3Br has been used mainly for preplant soil fumigation, post-harvest grain and timber fumigation, and structural fumigation. Most non-quarantine/pre-shipment (non-QPS) uses have been phased-out in 2005 for non-Article 5 (developed) countries and in 2015 for Article 5 (developing) countries under the Montreal Protocol on Substances that Deplete the Ozone Layer; some uses have continued under critical use exemptions (CUEs). Under the Protocol, individual nations are required to report annual data on CH3Br production and consumption for quarantine/pre-shipment (QPS) uses, non-QPS uses and CUEs to the United Nations Environment Programme (UNEP). In this study, we analyzed high precision, in situ measurements of atmospheric concentrations of CH3Br obtained at the Gosan station on Jeju island, Korea, from 2008 to 2019. The background concentrations of CH3Br in the atmosphere at Gosan declined from 8.5 ± 0.8 ppt in 2008 to 7.4 ± 0.6 ppt in 2019 at a rate of −0.13 ± 0.02 ppt yr−1. At Gosan, we also observed periods of persistent concentrations (pollution events) elevated above the decreasing background in continental air masses from China. Statistical back trajectory analyses showed that these pollution events predominantly trace back to CH3Br emissions from eastern China. Using an inter-species correlation (ISC) method with the reference trace species CFC-11 (CCl3F), we estimate anthropogenic CH3Br emissions from eastern China at 4.1 ± 1.3 Gg yr−1 in 2008–2019, approximately 2.9 ± 1.3 Gg yr−1 higher than the bottom-up emission estimates reported to UNEP. Possible non-fumigation CH3Br sources – rapeseed production and biomass burning – were assessed and it was found that the discrepancy is more likely due to unreported or incorrectly reported QPS and non-QPS fumigation uses. These largely-unreported anthropogenic emissions of CH3Br are confined to eastern China and account for 30–40 % of anthropogenic global CH3Br emissions. They are likely due to delays in the introduction of CH3Br alternatives, such as sulfuryl fluoride (SO2F2), heat, irradiation and a possible lack of industry awareness of the need for regulation of CH3Br production and use.

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Responses of phosphine susceptible and resistant strains of five stored-product insect species to chlorine dioxide

Cited by 19 publications

References 31 publications

Effect of synthetic amorphous silica powder on the cuticle of Tribolium castaneum and Sitophilus oryzae using hyperspectral imaging technique

Effect of synthetic amorphous silica powder on the cuticle of Tribolium castaneum and Sitophilus oryzae using hyperspectral imaging technique

Gaseous chlorine dioxide inactivation of microbial contamination on whole black peppercorns

Top-down and bottom-up estimates of anthropogenic methyl bromide emissions from eastern China

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