Liquid chromatographic method for the determination of methyl anthranilate in liquid formulation and residues on formulated rice seed bait

Primus, Thomas M.; Griffin, Doreen L.; Avery, Michael L.; Johnston, John J.

doi:10.1021/jf00060a012

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…We analyzed the control samples with samples of undiluted Bird Shield and 1.17 L/ha and 2.34 L/ha dilutions. The methods of methyl anthranilate extraction and analysis otherwise followed those of Primus et al (1995).…”

Section: Methyl Anthranilate Analysesmentioning

confidence: 99%

Evaluation of Bird Shield™ as a blackbird repellent in ripening rice and sunflower fields

Werner¹,

Homan²,

Avery³

et al. 2005

Wildlife Society Bulletin

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Chemical repellents sometimes can provide a nonlethal alternative for reducing wildlife impacts to agricultural production. In late summer and autumn 2002, we evaluated Bird ShieldTM (active ingredient: methyl anthranilate, Bird Shield Repellent Corporation, Spokane, Wash.) as a blackbird (Icteridae) repellent in Missouri rice fields and North Dakota sunflower fields. We selected 5 pairs of ripening rice fields in southeastern Missouri and randomly allocated treatments (treated and control) within pairs. The repellent was aerially applied by fixed‐winged aircraft at the recommended label rate and volume (1.17 L Bird Shield/ha and 46.7 L/ha, respectively); 1 field received 2X the label rate. We observed no difference in average bird activity (birds/minute) between treated and control fields over the 3‐day post‐treatment period (P = 0.503). We used reversed‐phase liquid chromatography to quantify methyl anthranilate residues in treated fields. The maximum concentration of methyl anthranilate in rice samples was 4.71 μg/g. This concentration was below reported threshold values that irritate birds. In North Dakota we selected 6 pairs of sunflower fields used by foraging blackbirds. We randomly selected 1 field from each pair for 2 aerial applications of Bird Shield at the label‐recommended rate ∼1 week apart. The remaining 6 fields served as controls. Daily bird counts, starting the first day of application and continuing for 5–7 days after the second application, showed similar numbers of blackbirds within treated and control fields (P = 0.964). We observed no difference in sunflower damage within treated and control fields (P = 0.172) prior and subsequent to the treatment. Bird Shield was not effective for repelling blackbirds from ripening rice and sunflower fields.

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Section: Methyl Anthranilate Analysesmentioning

confidence: 99%

Evaluation of Bird Shield™ as a blackbird repellent in ripening rice and sunflower fields

Werner¹,

Homan²,

Avery³

et al. 2005

Wildlife Society Bulletin

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Determination of methyl anthranilate in food samples by coupling stopped-flow mixing technique and time-resolved luminescence detection

Galtayries¹,

Aguilar-Caballos

Gómez‐Hens³

2000

Luminescence

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A sensitive and fast approach for the determination of methyl anthranilate in grape must and honey samples, using time-resolved luminescence measurements, has been reported for the first time. The method involves the alkaline hydrolysis of the ester to anthranilic acid and the formation of a chelate with terbium(III) and tri-n-octylphosphine oxide in presence of Triton X-100. Kinetic and equilibrium measurements were obtained in 0.1 and 15 s, respectively, by using a stopped-flow mixing technique. The dynamic ranges of the calibration graphs of the kinetic and equilibrium methods were 21.9 nmol/L-29.2 micromol/L and 19.7 nmol/L-21.9 micromol/L, respectively, and the detection limits were 7.3 and 6.6 nmol/L, respectively. The precision, expressed as relative standard deviation, was less than 3%. Although both-kinetic and equilibrium methods exhibited very similar analytical features, only the better selectivity of the former allowed the content of methyl anthranilate to be determined in the samples, as the initial rate measurements avoided the negative effect that the sample matrix caused in the equilibrium measurements. The analytical recoveries obtained by applying the kinetic method to the analysis of grape must and flower honey samples were in the range 92.5-105.0%.

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Liquid chromatographic method for the determination of methyl anthranilate in liquid formulation and residues on formulated rice seed bait

Cited by 2 publications

References 18 publications

Evaluation of Bird Shield™ as a blackbird repellent in ripening rice and sunflower fields

Evaluation of Bird Shield™ as a blackbird repellent in ripening rice and sunflower fields

Determination of methyl anthranilate in food samples by coupling stopped-flow mixing technique and time-resolved luminescence detection

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