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- W1171856906 abstract "<title>Abstract</title> This chapter presents a study conducted to examine <italic>Citrus</italic> fruits infested with <italic>A. suspensa</italic> to determine if the infested fruits emitted a detectable chemical profile distinct from that of non-infested <italic>Citrus</italic> fruits. Samples of headspace volatiles were collected at various stages of infestation and chemical analysis was performed with several types of GC equipment. Since the primary goal was development of a rapid screening protocol for 'signature chemicals', the majority of analyses were performed with a rapid (9 min) GC separation method. To evaluate the efficacy of separation with this rapid method, and to identify the volatile chemical components, a slower (25 min) high-resolution GC separation was performed in combination with mass spectral analysis. A preliminary evaluation was carried out of a portable ultra-high-speed GC analyser for detection of these same chemicals using a method requiring less than 80 s for sampling and chemical analysis. The results of the study indicate that there are GC-detectable volatile chemicals associated with tephritid infestation of fruit commodities. With infested grapefruits, the chemicals can be distinguished as those indicative of <italic>Citrus</italic> peel injury and those correlated with larval feeding (pulp/albedo injury). Of the chemicals identified, none appeared to be insect-produced, but rather natural fruit volatiles occurring at higher levels than normal. Elevated levels of δ-limonene and β-ocimene are only indicative of puncture wounds or other external damage to the grapefruit peel. However, if these two chemicals are accompanied by elevated levels of hexyl butanoate and the (as of yet) unidentified compound, this volatile profile is potentially diagnostic of <italic>Citrus</italic> infestation." @default.
- W1171856906 created "2016-06-24" @default.
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- W1171856906 date "2013-01-01" @default.
- W1171856906 modified "2023-09-25" @default.
- W1171856906 title "Signature chemicals for detection of Citrus infestation by fruit fly larvae (Diptera: Tephritidae)." @default.
- W1171856906 doi "https://doi.org/10.1079/9781845938291.0228" @default.
- W1171856906 hasPublicationYear "2013" @default.
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