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Dissipation pattern of azoxystrobin and difenoconazole in red dragon fruit(Hylocereus polyrhizus)cultivated in Indonesian highland(West Java)and coastal area(***)and its implication for dietary risk assessment

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Food Quality and Safety 2019年第2期3卷 99-106页

作者： Sri Noegrohati Sri Sulasmi Elan Hernadi Syanti Asviastuti Post Graduate Program Faculty of PharmacyGadjah Mada UniversitySekip UtaraYogyakarta 55281Indonesia Directorate of Quality and Standardization D.G.of Processing and Marketing for Agric.ProductsMinistry of AgricultureKantor Pusat Kementerian PertanianGedung D Lantai 3Jl.Harsono RM.No.3RagunanJakarta SelatanIndonesia Plant Product Quality Testing Center Directorate of Food CropsMinistry of AgricultureJl.AUP PasarMingguKotakPos 236/Jks.PSMJakarta Selatan 12520Indonesia

Background:Cultivation of red dragon fruit(Hylocereus polyrhizus)in Indonesian orchards is hampered by anthracnose and stem canker.A mixture of azoxystrobin 200 g/L+difenoconazole 125 g/L is recommended in supporting the obligated integrated pest *** the consumer safety,dietary intake of the residues from fresh edible part should be assessed;therefore,information on correct dissipation pattern of the applied pesticide is *** and Methods:Field residue trials in Indonesian highland(West Java)and coastal area(Special Region of Yogyakarta)were done at recommended dose was 0.151 kg ai/ha azoxystrobin and 0.094 kg ai/ha difenoconazole,three times at 10 days *** fruit samples were collected at 70%-100%ripeness at−1,0,1,3,7,10,and 14 days after last application,processed and determined its residue as soon as *** and Discussion:Photoisomerization of azoxystrobin was observed at Day 0,especially in coastal area;however,it has been dissipated to below lowest validated level in the following *** Day 0,3%-5%of the deposited azoxystrobin and difenoconazole penetrate into the flesh;however,most residues(95%-97%)were retained in peel,and dissipated in prolonged *** dissipation pattern was *** dissipation data were better fit with bi-exponential double-first-order in parallel than single first-order kinetics *** DT50 of both azoxystrobin and difenoconazole was 3 *** harvest time,seventh day,only azoxystrobin residue was detected in flesh at 0.006 mg/kg;therefore,the long-term dietary risk was 0 per cent acceptable daily ***:Fresh red dragon fruit is safe to consume.

关键词： azoxystrobin difenoconazole red dragon fruit dissipation dietary risk

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Extreme Values Approach in Food risk Modeling

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Open Journal of Statistics 2022年第5期12卷 691-710页

作者： Komla Elom Adedje Diakarya Barro Université Thomas Sankara Ouagadougou Burkina Faso

In this paper we estimate the incubation period of a possible pathology following exposure to dioxins during a poor diet. The tools developed for this purpose include the probabilistic extremal model and the stochastic behavior of the distribution tails of the contamination. We propose a cumulative distribution function for a random variable that follows both a Gaussian distribution and a GPD. A global optimization method is also explored for the efficient estimation of parameters of GPD.

关键词： Extreme Values Tail Dioxin dietary risk Incubation Period

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