Foods
·
2024
·Vol. 13
·期 24
·4145
·
IF 4.7
Yunpeng Wei,Huiqiang Hu,Minghua Yuan,Huaxing Xu,Xiaobo Mao,Yuping Zhao,Luqi Huang
The bioactive components of chrysanthemum tea are an essential indicator in evaluating its nutritive and commercial values. Combining hyperspectral imaging (HSI) with key wavelength selection and pattern recognition methods, this study developed a novel approach to estimating the content of bioactive components in chrysanthemums, including the total flavonoids (TFs) and chlorogenic acids (TCAs). To determine the informative wavelengths of hyperspectral images, we introduced a variable similarity regularization term into particle swarm optimization (denoted as VSPSO), which can focus on improving the combinatorial performance of key wavelengths and filtering out the features with higher collinearity simultaneously. Moreover, considering the underlying relevance of the phytochemical content and the exterior morphology characteristics, the spatial image features were also extracted. Finally, an ensemble learning model, LightGBM, was established to estimate the TF and TCA contents using the fused features. Experimental results indicated that the proposed VSPSO achieved a superior accuracy, with R2scores of 0.9280 and 0.8882 for TF and TCA prediction. Furthermore, after the involvement of spatial image information, the fused spectral–spatial features achieved the optimal model accuracy on LightGBM. The R2scores reached 0.9541 and 0.9137, increasing by 0.0308–0.1404 and 0.0181–0.1066 in comparison with classical wavelength-related methods and models. Overall, our research provides a novel method for estimating the bioactive components in chrysanthemum tea accurately and efficiently. These discoveries revealed the potential effectiveness for constructing feature fusion in HSI-based practical applications, such as nutritive value evaluation and heavy metal pollution detection, which will also facilitate the development of quality detection in the food industry.
研究领域:
食品科学
·
植物化学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Di Wu,Chengpei Du,Lingyan Ma,Rui Xiao,Long Tan,Wenjing Qi
Owing to Zn 2+ -sensitized fluorescent effect, boric acid functionalized zinc-europium binuclear metal-organic frameworks ( Zn-Eu-MOFs ) are synthesized and applied in fluorescent quenching detection of luteolin in Chrysanthemum tea for the first time. Eu 3+ /Zn 2+ and 5-boronobenzene-1,3-dicarboxylic acid (BBDC) are utilized via a fast one-pot microwave process at 120 °C for 1 h. Due to energy transfer efficiency change by “antenna” effect and better effective energy transfer of Zn 2+ than Eu 3+ , Zn 2+ increases fluorescence of Zn-Eu-MOFs nearly 3.5 times. Different ligands and different metal ions are compared to synthesize Zn-Eu-MOFs . Highly specific binding affinity of boric acid towards cis-diol structure in luteolin and chelating of Zn 2+ with luteolin achieves fluorescent quenching detection of luteolin with low limit of detection of 16 nΜ and high selectivity. When it is utilized in fluorescent detection of luteolin in water and Chrysanthemum tea, mean recoveries are obtained from 99.5 % to 102.7 % and from 99.3 % to 100.6 %, respectively.
研究领域:
化学
·
食品科学
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产品关联
DOI
高影响因子
CHEMISTRY & BIODIVERSITY
·
2025
·
IF 2.5
Yiyi Ye,Hongbing Liu,Manman Xin,Yingwei Liu,Jun Tong,Jichao Liang,Lijuan Sun
Chrysanthemum morifolium Ramat. (CM) and Coreopsis tinctoria Nutt. (CT), known as "Juhua" in China, are frequently consumed as tea. However, comparative studies on their chemical composition and biological activity are lacking. This study analyzed the chemical constituents of CM and CT aqueous extracts using high-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry (HPLC-DAD-ESI-QTOF-MS) and assessed their hypoglycemic and antioxidant activities. Both extracts primarily contained flavonoids and phenolic acids; CM contained 35 flavonoids (27 flavones, 4 flavonols, 3 flavanones, and 1 flavanonol) and 14 caffeoylquinic acids (CQAs), while CT contained 41 flavonoids (3 flavones, 6 flavonols, 20 flavanones, 5 flavanonols, and 7 chalcones) and 12 CQAs. CT demonstrated significantly higher total phenolics and flavonoids—three times more phenolics and two times more flavonoids than CM. It showed greater α-glucosidase inhibition, glycosylation reduction, and 2-NBDG uptake enhancement compared to CM. Additionally, CT's antioxidant capacity was superior to that of CM. These findings indicate that while both CM and CT are rich in flavonoids and phenolic acids, their compositions differ significantly. The higher concentration of these compounds in CT contributes to its more pronounced hypoglycemic and antioxidative effects, providing valuable insights for the future use of Juhua in diabetes treatment.
研究领域:
植物化学
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药理学
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代谢病研究
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产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
An Peng,Lianzhu Lin,Mouming Zhao
Submicroparticles are important components generally existed in chrysanthemum tea infusion, but their functionality, chemical composition, structure and self-assembly mechanism are unclear due to lack of suitable preparation method and research strategy. This study showed that submicroparticles promoted the intestinal absorption of phenolics in chrysanthemum tea infusion by comparison of chrysanthemum tea infusion, submicroparticles-free chrysanthemum tea infusion and submicroparticles. Submicroparticles efficiently prepared by ultrafiltration mainly consisting of polysaccharide and phenolics accounted for 22% of total soluble solids in chrysanthemum tea infusion. The polysaccharide, which was determined as esterified pectin with a spherical conformation, provided spherical skeleton to form submicroparticles. A total of 23 individual phenolic compounds were identified in submicroparticles with the total phenolic content of 7.63 μg/mL. The phenolics not only attached to the external region of spherical pectin by hydrogen bonds, but also got into hydrophobic cavities of spherical pectin and attached to the internal region by hydrophobic interactions.
研究领域:
食品科学
·
化学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）