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Food Chem

Title:		Volatile biomarkers for early-stage detection of insect-infested brown rice: Isopentenols and polysulfides
Author(s):		Tanaka F; Magariyama Y; Miyanoshita A;
Address:		"Central Region Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8666, Japan. Electronic address: fukuyot@affrc.go.jp. Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8642, Japan. Electronic address: maga@affrc.go.jp. Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8642, Japan. Electronic address: akihirom@affrc.go.jp"
Journal Title:		Food Chem
Year:		2020
Volume:		20190819
Issue:
Page Number:		125381 -
DOI:		10.1016/j.foodchem.2019.125381
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"To reduce food loss from stored products by insect attack, monitoring and early detection of insects are essential. Presently, monitoring with pheromone traps is the primary method for detection; however, traps are effective only after the insects propagate. Detection and identification of the early volatile biomarkers arising from insect-infested brown rice was performed in this study to develop an alternative detection strategy. Brown rice was infested with eggs of seven insect species, including Sitophilus zeamais and Plodia interpunctella. Infested rice emitted at least one of the volatile compounds prenol, isoprenol, dimethyl disulfide, and dimethyl trisulfide (DMTS). In particular, isopentenols were generated by moths within one week of infestation, whereas they were not released from non-infested rice. DMTS was detected from all insect-infested brown rice, especially S. zeamais and P. interpunctella. These volatiles are potential early biomarkers for the presence of insects in brown rice"
Keywords:		Animals Biomarkers/analysis/metabolism Disulfides/analysis/metabolism Food Contamination/*analysis Hemiterpenes Insecta/*metabolism/physiology Larva/metabolism *Oryza Pentanols/*analysis/metabolism Sulfides/*analysis/metabolism Volatile Organic Compounds/;
Notes:		"MedlineTanaka, Fukuyo Magariyama, Yukio Miyanoshita, Akihiro eng England 2019/09/02 Food Chem. 2020 Jan 15; 303:125381. doi: 10.1016/j.foodchem.2019.125381. Epub 2019 Aug 19"