TALANTA
·
2019
·
IF 4.916
Tian-Tian Ma,Xiao-Fang Shen,Cheng Yang,Hai-Long Qian,Yue-Hong Pang,Xiu-Ping Yan
Covalent organic framework TpBD was grafted on stainless steel wire with polydopamine as a linker. The fabricated TpBD bonded stainless steel wire was used as the solid-phase microextraction fiber to extract sixteen polycyclic aromatic hydrocarbons (PAHs) for subsequent GC-MS/MS determination in grilled meat samples. The developed method gave the limits of detection ( S/N = 3) from 0.02 (pyrene)-1.66 (naphthalene) ng L −1 and enhancement factors from 1069 (naphthalene)-10879 (benz(a)anthracene). The relative standard deviations (RSDs) for intra-day and inter-day study are in the range of 2.6%–8.5% and 4.5%–9.4%, respectively. The fiber-to-fiber RSDs for three parallel prepared fibers were 5.3%–10.0%. One TpBD bonded fiber can stand at least 200 cycles without significant loss of extraction efficiency. The developed method was successfully applied for the determination of trace PAHs in grilled meat samples with recoveries from 85.1% to 102.8%.
研究领域:
分析化学
·
食品科学
✓ 已验证
DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2021
·Vol. 44
·期 24
·4313-4326
·
IF 3.645
Tingting Liu,Evans AgyeKum,Sai Ma,Hanzhang Ye,Jiani Li,Ming Gao,Min Ni,Xiaofan Zhang,Xuedong Wang
To simultaneously and efficiently extract pollutants with differential polarities, we herein fabricated and characterized a multifunctional nanocomposite. The novel nanohybrids used NiFe 2 O 4 as magnetic cores, and NH 2 -MIL-101(Al), β-cyclodextrin and graphene oxide as functional components combined with magnetic cores. With the aid of graphene oxide's large π-conjugated system, NH 2 -MIL-101(Al)’s strong adsorption to moderately/strongly polar chemicals, and β-cyclodextrin's specific recognition effect, the nanohybrids realized synergistically efficient extraction of polyaromatic hydrocarbons and bisphenols with a log Kow range of 3–6. Combined with acidic and alkaline sources, the nanohybrids-based effervescent tablets were prepared. Based on effervescent reaction-enhanced nanohybrids-based efficient adsorption/extraction and high performance liquid chromatography and fluorescence detection, we successfully developed an excellent microextraction method for the simultaneous determination of both polyaromatic hydrocarbons and bisphenols in roasted meat samples. Several important variables were optimized as follows: Na 2 CO 3 and tartaric acid as acidic and alkaline sources, 900 μLof the mixed solvent (acetone and hexane at 2:1 by v/v) as the eluent, 5 min of elution time. Under optimized conditions, the novel method gave low limits of detection (0.07–0.30 μg kg −1 ), satisfactory recoveries (86.9–103.9%), and high precision (relative standard deviations of 1.9–6.7%) in roasted lamb, beef, pork, chicken, and sausage samples.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yangyang Ma,Ju Lin,Miaoyun Li,Yaodi Zhu,Lijun Zhao,Dong Liang,Dong Hyun Cho,Gaiming Zhao
In order to explore the influence of wood types on formation of polycyclic aromatic hydrocarbons (PAHs) in traditional smoked and grilled meat products, the effect of lignin in woods on formation of PAHs was investigated in meat model systems. The results showed that PAHs formation was much dependent on the heating conditions. The addition of lignin led to significantly increased PAHs, which being connected with lignin structure. In comparison, the formation of PAHs was more facilitated by lignin with G structure than that with G/S structure. However, further study of adding lignin precursors demonstrated that lignin precursors with S structure were more favorable to the formation of PAHs than those with G structure. It was proposed that the relative content and activity of G/S structure of lignin in wood played a significant role in the formation of PAHs, which might provide theoretical reference for inhibition of PAHs fundamentally.
研究领域:
食品科学
·
化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
FOOD CONTROL
·
2023
·
IF 6
Xiaoyue Yang,Christophe Blecker,Huan Liu,Dequan Zhang,Zhenyu Wang
To elucidate the regulation of different structures of polyphenolic compounds with m-hydroxy and o-hydroxy groups inhibiting the formation of different heterocyclic amines (HAs), the reactions between classified polyphenols (cover flavonoids , phenolic acids , stilbenes, coumarins, chalcones, and with different hydroxyl groups) and roasted lamb patties were studied, and then validated in model systems in vitro. The results indicated that the chalcone, coumarin, and stilbene compounds were more efficient to inhibit the HAs generation in roasted lamb patties in comparison with the flavonoids, while phenolic acid had the worst effect. Besides, polyphenols inhibit the formation of HAs through a synergistic action of scavenging free radicals and trapping active carbonyls. Polyphenols with m-hydroxyl structures have a stronger inhibition of PhIP 1 , Harman and Norharman by capturing the reaction intermediate carbonyl compounds . Polyphenols with the o-hydroxyl group had a stronger inhibitory effect on MeIQx by scavenging free radicals. It was concluded that the ability of polyphenols to inhibit different HAs can be predicted by their m-hydroxyl and o-hydroxyl groups.
研究领域:
食品科学
·
化学
·
药理学
·
营养学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）