A New Method for Determination of α-Tocopherol in Tropical Fruits by Ultra Performance Convergence Chromatography with Diode Array Detector

Gong, Xiaoyi; Qi, Ningli; Wang, Xiaoxi; Li, Jihua; Lin, Lijing

doi:10.1007/s12161-014-9789-7

Cited by 28 publications

(9 citation statements)

References 25 publications

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“…Abbasi et al [ 31 ] also detected higher content of α-tocopherol in peels than pulps in nine mango cultivars from China. α-tocopherol amount in mango pulps was higher than that described by Burns et al [ 32 ] (0.05 μg/g) in mango from Costa Rica, in agreement with Ornelas-Paz et al [ 18 ] (0.2–0.5 μg/g) in seven Mexican mango cultivars but lower than the content described by Vilela et al [ 33 ] (12–94 μg/g) and Gong et al [ 34 ] (2.0 μg/g) in twelve Portuguese mango cultivars and in mango from China, respectively. As polyphenols and carotenoids, the α-tocopherol amount depends on the genotype, the environmental factors and analytical methods, among other factors [ 35 ], which explains the differences observed among the results obtained in this study and others.…”

Section: Resultssupporting

confidence: 89%

Biological Active Ecuadorian Mango ‘Tommy Atkins’ Ingredients—An Opportunity to Reduce Agrowaste

et al. 2018

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Mango is a commercially important tropical fruit. During its processing, peel and seed kernel are discarded as waste but they could be recovered as an excellent and cost-effective source of health-promoting ingredients. This study aimed to characterize some of them, including carotenoids like the provitamin A β-carotene and lutein, with an interest beyond its role in eye health. Other health-promoting compounds like tocopherols and polyphenols were also evaluated, as well as the in vitro antioxidant capacity of mango by-products. Regarding isoprenoids, α-tocopherol was mainly found in the peels and carotenoids concentration was higher in the pulps. β-carotene was the most abundant carotene in pulp and seed kernel, whereas peel was the only source of lutein, with violaxanthin the most abundant xanthophyll in the different mango organs tested. With regard to polyphenols, peels exhibited greater variability in its phenolic composition, being the total content up to 85 and 10 times higher than the pulp and seed kernels, respectively. On the other hand, peels also stood out for being a very rich source of mangiferin. Seed kernels and peels showed higher antioxidant capacity values than the pulps. These results contribute to the valorization of mango by-products as new natural ingredients for the pharma and food industries.

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Section: Resultssupporting

confidence: 89%

Biological Active Ecuadorian Mango ‘Tommy Atkins’ Ingredients—An Opportunity to Reduce Agrowaste

et al. 2018

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“…Previous studies have demonstrated that the type of solvent B, the stationary phase, the temperature of the chromatographic column, and the pressure of autobackpressure regulator (ABPR) could greatly affect the validity and reliability of UPC 2 data . To achieve the best analytical performance, these parameters were optimized.…”

Section: Resultsmentioning

confidence: 99%

“…Ultraperformance convergence chromatography (UPC 2 ) is a recent modification of SFC, which is ideal for analyzing ionizable, polar, nonpolar, and low‐polar compounds , but lack kinetic performance . The UPC 2 uses supercritical fluid CO 2 as primary mobile phase, significantly less organic solvent, operates at lower than 60°C, and separates compounds in less than 10 min . Therefore, UPC 2 is a new type analytical instrument with many advantages, such as being time‐saving, organic solvent efficient, and environmentally friendly with a low running temperature.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous determination of herbicide residues in tobacco using ultraperformance convergence chromatography coupled with solid‐phase extraction

Guo

Bian

Zhang

et al. 2015

J of Separation Science

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A time-saving and organic solvent efficient method to simultaneously determine six kinds of herbicide residues in tobacco using solid-phase extraction for sample clean-up and preconcentration and the highly sensitive ultraperformance convergence chromatography method was developed. Parameters for ultraperformance convergence chromatography, including the choice of stationary phase and modifiers, autobackpressure regulator pressure, column temperature, and the flow rate of mobile solvents, were optimized. The herbicide residues of napropamide, alachlor, quizalofop-ethyl, diphenamid, metolachlor, and clomazone in tobacco samples were successfully separated and detected at levels as low as 0.0043-0.0086 mg/kg within 5 min using a nonpolar high strength silica C18 selectivity for bases column and methanol as the cosolvent of the mobile phase of carbon dioxide (75-99.9%, v/v). Analysis of tobacco samples had recoveries of 69.8-95.0%, limit of quantitation of 0.0127-0.0245 mg/kg, limit of detection of 0.0043-0.0086 mg/kg, and correlation coefficient of >0.9990. Results support this method as an efficient alternative to current methodologies for the determination of herbicide residues in tobacco.

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“…As one of the latest kinds of chromatography technologies, it integrates supercritical fluid chromatography (SFC) and ultraperformance liquid chromatography (UPLC) technologies, which results in many remarkable advantages, including reduced run time, lower solvent consumption, reliability, high resolution, and sensitivity, all of which make its application to routine analysis very attractive. More importantly, UPC 2 is an environmentally friendly analytical technique that employs dramatically reduced quantities of organic solvents compared to conventional chromatographic methods [23,24]. Nowadays, UPC 2 technology has been widely utilized in pharmaceutical analysis, and could serve as an alternative or complementary approach alongside HPLC and GC [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

A New Method for Determination of Thymol and Carvacrol in Thymi herba by Ultraperformance Convergence Chromatography (UPC2)

Chang

Sun

et al. 2020

Molecules

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Ultraperformance convergence chromatography is an environmentally friendly analytical technique for dramatically reducing the use of organic solvents compared to conventional chromatographic methods. In this study, a rapid and sensitive ultraperformance convergence chromatography method was firstly established for quantification of thymol and carvacrol, two positional isomers of a major bioactive in the volatile oil of Thymi herba, the dried leaves and flowers of Thymus mongolicus or Thymus przewalskii, known in China as “Dijiao.” Using a TrefoilTM CEL1 column, thymol and carvacrol were separated in less than 2.5 min and resolution was enhanced. The method was validated with respect to precision, accuracy, and linearity according to the National Medical Products Administration guidelines. The optimized method exhibited good linear correlation (r = 0.9998−0.9999), excellent precision (relative standard deviations (RSDs) < 1.50%), and acceptable recoveries (87.29–102.89%). The limits of detection for thymol and carvacrol were 1.31 and 1.57 ng/L, respectively, while their corresponding limits of quantification were 2.63 and 3.14 ng/L. Finally, the quantities of the two compounds present in 16 T. mongolicus and four T. przewalskii samples were successfully evaluated by employing the developed method. It is hoped that the results of this study will serve as a guideline for the quality control of Thymi herba.

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A New Method for Determination of α-Tocopherol in Tropical Fruits by Ultra Performance Convergence Chromatography with Diode Array Detector

Cited by 28 publications

References 25 publications

Biological Active Ecuadorian Mango ‘Tommy Atkins’ Ingredients—An Opportunity to Reduce Agrowaste

Biological Active Ecuadorian Mango ‘Tommy Atkins’ Ingredients—An Opportunity to Reduce Agrowaste

Simultaneous determination of herbicide residues in tobacco using ultraperformance convergence chromatography coupled with solid‐phase extraction

A New Method for Determination of Thymol and Carvacrol in Thymi herba by Ultraperformance Convergence Chromatography (UPC2)

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