Rice weevil management through application of silica nano particle and physico-chemical and cooking characterization of the treated rice |
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| Affiliation: | 1. College of Materials Science and Engineering, Hunan University, Changsha 410082, China;2. Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410073, China;1. Department of Biotechnology, The Institute of Biochemistry, Biotechnology and Bioinformatics, The Islamia University Bahawalpur,63100, Pakistan;2. Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing 100871, China;3. Department of Physics, University of Education Lahore, Multan campus 59071, Pakistan;4. School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong Province 510225, PR China;5. School of Electrical and Computer Engineering, RMIT University, 124 La Trobe Street, 3001 Melbourne, Victoria, Australia;1. Department of Electronic Science, Savitribai Phule Pune University, Pune 411 007, MS, India;2. Department of Blast and Damage Studies, Terminal Ballistic Research Laboratory, Defence R & D Organization, Chandigarh 160 030, PS, India;3. Department of Physics, School of Basic Sciences, Central University of Punjab, Guddha 151 004, PS, India |
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| Abstract: | Nano technology is an alternative method for pest management and can be applied to minimize the post harvest storage losses due to insect infestation. A study was undertaken with an aim to control the stored grain pests, particularly rice weevil using silica nano particle (SNP). The nano-silica of 30 nm size was taken for the experiment. Entomotoxic effect of five different doses of SNP was tested against rice weevil Sitophilus oryzae. The effects of SNP mixing with grain at the rate of 0.25, 0.5, 0.75 and 1.0 g/kg of rice, stored in glass jars and gunny bags were examined. The cumulative mortality rate was studied at 1, 2, 4, 7 and14 days of exposure. Mortality rate of 80 and 97.4% were achieved after 7 and 14 days of storage by application of SNP at the rate of 0.5 g per kg of rice. Residual persistency of samples treated with optimum dose of SNP was studied by washing with distilled water at the ratio of 1:2 (sample to water ratio) for three times and the samples were studied under Scanning Electron Microscope (SEM). Single washing prior to cooking was found to be sufficient enough for removing the SNP from treated rice and can be recommended safe for cooking and consumption. This process can also prove to be an eco-friendly and efficient pest management technology. The technology is suitable for industrial application in large scale warehouses and storage godowns to control stored grain insect pests. |
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| Keywords: | Silica nano particle Rice weevil Mortality rate Weevil percent Weight loss Cooking characteristics |
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