Determination of aflatoxins in walnut sujuk and Turkish delight by HPLC-FLD method

Gölge, Özgür; Hepsağ, Fatma; Kabak, Bülent

doi:10.1016/j.foodcont.2015.06.035

Cited by 54 publications

(30 citation statements)

References 22 publications

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“…Taken together, these results reveal novel information on population genetics and provide specific geographical regions containing high genetic diversity of the Juglans species sampled, which will assist in future conservation management.Forests 2018, 9, 646 2 of 22 karyotype of 2n = 2x = 32 [3]. All Juglans are monoecious, wind-pollinated, and temperate deciduous trees [1,4,5].China is the third largest in-shell walnut producer, with a production of 1,700,000 tons annually [6,7]. The iron walnut (J. sigillata Dode) is a thick-shelled, edible walnut that grows in southwestern China and is closely related to the widely cultivated J. regia [8][9][10][11].…”

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confidence: 99%

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Population Structure, Genetic Diversity, and Gene Introgression of Two Closely Related Walnuts (Juglans regia and J. sigillata) in Southwestern China Revealed by EST-SSR Markers

Sun

Bai

et al. 2018

Forests

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The common walnut (Juglans regia L.) and iron walnut (J. sigillata Dode) are well-known economically important species cultivated for their edible nuts, high-quality wood, and medicinal properties and display a sympatric distribution in southwestern China. However, detailed research on the genetic diversity and introgression of these two closely related walnut species, especially in southwestern China, are lacking. In this study, we analyzed a total of 506 individuals from 28 populations of J. regia and J. sigillata using 25 EST-SSR markers to determine if their gene introgression was related to sympatric distribution. In addition, we compared the genetic diversity estimates between them. Our results indicated that all J. regia populations possess slightly higher genetic diversity than J. sigillata populations. The Geostatistical IDW technique (HO, PPL, NA and PrA) revealed that northern Yunnan and Guizhou provinces had high genetic diversity for J. regia while the northwestern Yunnan province had high genetic diversity for J. sigillata. AMOVA analysis revealed that significant genetic variation was mainly distributed within population as 73% in J. regia and 76% in J. sigillata. The genetic differentiation (FST) was 0.307 between the two walnut species (p < 0.0001), which was higher than FST values within populations (J. regia FST = 0.265 and J. sigillata FST = 0.236). However, the STRUCTURE analysis of the J. regia and J. sigillata populations revealed two genetic clusters in which gene introgression exists, therefore, the boundary of separation between these two walnut species is not clear. Moreover, these results were validated by NJ and UPGMA analysis with additional conformation from the PCoA. Based on the SSR data, our results indicate that J. sigillata is an ecotype of J. regia. Taken together, these results reveal novel information on population genetics and provide specific geographical regions containing high genetic diversity of the Juglans species sampled, which will assist in future conservation management.

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confidence: 99%

“…China is the third largest in-shell walnut producer, with a production of 1,700,000 tons annually [6,7]. The iron walnut (J. sigillata Dode) is a thick-shelled, edible walnut that grows in southwestern China and is closely related to the widely cultivated J. regia [8][9][10][11].…”

mentioning

confidence: 99%

Population Structure, Genetic Diversity, and Gene Introgression of Two Closely Related Walnuts (Juglans regia and J. sigillata) in Southwestern China Revealed by EST-SSR Markers

Sun

Bai

et al. 2018

Forests

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“…Among different analytical methods available, high-performance liquid chromatography with fluorescence detection (HPLC-FLD) is currently the most widely used for the determination of aflatoxins due to its great versatility in the analysis of complex matrices. 22,23 However, it usually cannot give a satisfactory result for the fluorescence emissions of AFB 1 and AFG 1 which were markedly quenched by eluents used in both normal and reversed-phase (RP) HPLC. In order to produce the highly fluorescent derivatives AFB 2a and AFG 2a from the less fluorescent AFB 1 and AFG 1 , respectively, the native fluorescence of AFB 1 and AFG 1 has been enhanced by different derivatization procedures: pre-column formation of hemiacetal derivates with trifluoracetic acid (TFA) or post-column derivatization with bromine or iodine (directly added or electrochemically cell produced).…”

Section: Rapid and Effective Sample Cleanup Based On Polyvinylpyrrolimentioning

confidence: 99%

Rapid and Effective Sample Cleanup based on Polyvinylpyrrolidone-Coated Magnetite Nanoparticles Coupled with New Pre-Column Derivatization for Determination of Aflatoxins B1, B2, G1 and G2 in Animal Feeds by High-Performance Liquid Chromatography with Fluorescence Detection

Zhao

Zhou

Zhang

et al. 2019

J. Braz. Chem. Soc.

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in animal feed samples based on magnetic solid-phase cleanup and novel pre-column derivatization has been developed. In this work, synthesized polyvinylpyrrolidone-coated Fe 3 O 4 magnetic nanoparticles were applied as adsorbents for rapid cleanup for extracts of animal feed samples. The purified extract was then derivatized with trifluoroacetic acid coupling ultraviolet irradiation which enabled the weakly fluorescent AFB 1 and AFG 1 transformed into their highly fluorescent hemiacetals derivatives. Afterward aflatoxins were separated and quantified by reverse phase liquid chromatography with fluorescence detection. The results indicated that four AFs presented excellent linear response with correlation coefficients > 0.996 and recoveries ranged from 86.7 to 108.9% with relative standard deviations (RSDs) from 3.6 to 6.4%. The limits of detection (LODs) were 0.0392, 0.2429, 0.0842, 0.4556 ng mL-1 for AFB 1 , AFB 2 , AFG 1 and AFG 2 , respectively.

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“…Проте широко використовують у народній медицині та фармакології листя і зелені плоди, у харчовій промисловості -зе лені плоди для виробництва варення, настоянок [8,9]. Все більше уваги приділяється науковцями в області вивчення і використання в харчуванні корисних речовин стиглого волоського горіха [10,11], а зелений горіх зали шається малорозвиненою промисловою культурою і пер спективною біологічно цінною рослинною сировиною.…”

Section: Issn 2226-3780unclassified

Development of technology of smoothie on the basis of jerusalem artichoke with the use of walnut

Тюрікова¹,

Пересічний²,

Рогова³

2015

TAPR

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Determination of aflatoxins in walnut sujuk and Turkish delight by HPLC-FLD method

Cited by 54 publications

References 22 publications

Population Structure, Genetic Diversity, and Gene Introgression of Two Closely Related Walnuts (Juglans regia and J. sigillata) in Southwestern China Revealed by EST-SSR Markers

Population Structure, Genetic Diversity, and Gene Introgression of Two Closely Related Walnuts (Juglans regia and J. sigillata) in Southwestern China Revealed by EST-SSR Markers

Rapid and Effective Sample Cleanup based on Polyvinylpyrrolidone-Coated Magnetite Nanoparticles Coupled with New Pre-Column Derivatization for Determination of Aflatoxins B1, B2, G1 and G2 in Animal Feeds by High-Performance Liquid Chromatography with Fluorescence Detection

Development of technology of smoothie on the basis of jerusalem artichoke with the use of walnut

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