Foods
·
2023
·Vol. 12
·期 5
·924
·
IF 5.2
Shuyue Fan,Caiyun Liu,Yunkui Li,Yu Zhang
A visual and easy-to-implement representation approach of red wine color is proposed in this work. The wine color under standard conditions, called feature color, was reproduced in the form of a circular spot. The feature color was further decomposed into two orthogonal aspects, the chromatic and light–dark components, characterized in the form of chromaticity distribution plane and lightness distribution plane, respectively. The color characterization of wine samples showed that this method well represented the color characteristics and can provide intuitive visual perception of wine color, in a way that is more reliable and convenient than the photographic method. The applications for monitoring the color evolution during winery and laboratory fermentation and the age discrimination of 175 commercial red wines suggest that this visual method is effective for color management and control of wine during fermentation and aging. The proposed method is a convenient way to present, store, convey, understand, analyze and compare the color information of wines.Keywords:color visualization;color characterization;color reproduction;wine fermentation;CIELAB
研究领域:
食品科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
Fermentation-Basel
·
2023
·Vol. 9
·期 6
·519
·
IF 3.7
Shuyue Fan,Yu Zhang,Yunkui Li
The classification of color is important in the management and evaluation of red wine color. Nevertheless, current reports have not given a sound solution. A novel scheme for the quantitative classification of red wine color from the perspective of micro and macro levels was proposed in this work. The overall color performance of 119 representative red wine samples was visualized and classified into 125 micro-classifications according to the partition of the chromaticity and lightness of the wine color. Considering the evolution of red wine color, quantitative macro-classification of the color of the wine samples was explored, and six macro-classifications were obtained. These few classifications determine the extent of aging and aging potential of colors between different red wines well. The performance of this approach was further verified by another set of 56 red wine samples. This efficient and easy-to-implement approach is expected to be helpful in the digital and visual color management, control, evaluation, comparison, and prediction of red wines.Keywords:wine color classification;wine color evolution;CIELAB;visual representation
研究领域:
食品科学
·
化学计量学
✓ 已验证
DOI
高影响因子
Journal of Natural Fibers
·
2024
·
IF 2.8
Yingjie Cai,Xiaolong Huang,Mohammad Nazmul Ehsan,Mumtahina Riza,Tiancheng Jiang,Md. Nahid Pervez,Shuang Han,Mohammad Mahbubul Hassan,Vincenzo Naddeo
A limited selection of natural dyes’ color impedes the development of textile dyeing with natural plant dyes. Inspiring by the conventional coloration of textiles with a combination of three synthetic dyes generally, the present work is to investigate the broadening color shade of dyed wool fiber with ternary natural dye combinations of madder red (MR), gardenia yellow (GY), and gardenia blue (GB) without mordants in a decamethylcyclopentasiloxane (D5) medium. The wool yarn was wetted in an aqueous solution of pH 3 to own a 300% pickup rate, followed by immersion in a D5 medium containing 2% of alcohol ethoxylate (AEO-3) and solid natural dyes at 90°C for 90 min for coloration. The colorfastness to washing was achieved at a 4–5 for fading and a 5 rating for staining for all colors. The XRD patterns and TGA analysis confirmed that the dyeing procedure did not affect the crystallinity nature and stable thermal tendency. SEM images and cross-sections showed that the dyeing procedure did not damage the morphological structure of the wool fiber surface, and the dyes were evenly distributed. Finally, many color shades of dyed fibers were prepared with various dyes’ ratios.
研究领域:
纺织科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2023
·Vol. 44
·期 7
·2200915
·
IF 4.6
Qian Jiang,Huan Ruan,Chenchen Sun,Tian Wang,Yuping Zhang,Yuan Qiu,Hong Wang,Yonggui Liao,Xiaolin Xie
Bright structural color derived from the unique helical superstructure of cholesteric liquid crystals (CLCs) has attracted much attention. In addition, fluorescence color is an intrinsic emission upon excitation, which can be observed often under UV light. However, it is a challenge to combine the fluorescence and structural colors to construct a self-supporting system at the same time. In this work, a photoresponsive cyanostilbene-based gelator (CSpy-C10) is synthesized, which emits blue fluorescence in LC. CSpy-C10 can gel LCs and further construct thermo-/photoresponsive CLC physical gels. The structural color of the CLCs, fluorescence, and mechanical properties of the gels can be independently regulated due to the separation of the chiral unit and photoresponsive unit with aggregation-induced emission behavior. Finally, the reversible information encryption including writing and erasing based on the changes in fluorescence are explored. This kind of two-color material can be applied in the fields ranging from information encryption, fluorescent display to high-tech anticounterfeiting.
研究领域:
材料科学
·
光学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2022
·Vol. 9
·期 36
·2205325
·
IF 17.521
Chang Sun,Shuoning Zhang,YunXiao Ren,Jianying Zhang,Jiyuan Shen,Shengyu Qin,Wei Hu,Siquan Zhu,Huai Yang,Dengke Yang
The ability of some animals to rapidly change their colors can greatly improve their chances of escaping predators or hunting prey. A classic example is cephalopods, which can rapidly shift through a wide range of colors. This ability is based on the synergetic effect of the change of pigmentary and structural colors exhibited by their own two categories of color-changing cells: supernatant chromatophores offer various pigmentary colors and lower iridophores or leucophores reflect the different structural colors by adjusting their periodicities. Here, a mechanochromic liquid crystalline elastomer with force-induced synergetic pigmentary and structural color change, whose mechanosensitivity is enhanced by the stress-concentration induced by the doped nanoparticle, is presented. The materials have a large color-changing gamut and high mechanochromic sensitivity, which exhibit great potential in the field of mechanical detectors, sensors, and anti-counterfeiting materials.
研究领域:
材料科学
·
生物学
✓ 已验证
DOI
高影响因子
NPG Asia Materials
·
2022
·Vol. 14
·期 1
·1-10
·
IF 10.761
Wen Guo-Yu,Zhou Xing-Long,Tian Xiao-Yu,Xie Rui,Ju Xiao-Jie,Liu Zhuang,Faraj Yousef,Wang Wei,Chu Liang-Yin
Pigmentary coloration can produce viewing angle-independent uniform colors via light absorption by chromophores. However, due to the limited diversity in the changes of the molecular configuration of chromophores to undergo color change, the existing materials cannot produce a wide range of visible colors with tunable color saturation and transmittance. Herein, we propose a novel strategy to create materials with a wide visible color range and highly tunable color saturation and transmittance. We fabricated a hydrogel with poly (acrylamide- co -dopamine acrylamide) networks swollen with Fe 3+ -containing glycerol/water in which the covalently crosslinked polyacrylamide backbone with pendant catechols can ensure that the hydrogel maintains a very stable shape. Hydrogels containing adjustable catechol-Fe 3+ coordination bonds with flexible light-interacting configuration changes can display a wide range of visible colors based on the complementary color principle. The catechol-Fe 3+ complexes can dynamically switch between noncoordinated and mono-, bis- and tris-coordinated states to harvest light energy from a specific wavelength across the whole visible spectrum. Therefore, these hydrogels can be yellow, green, blue, and red, covering the three primary colors. Moreover, color saturation and transmittance can be flexibly manipulated by simply adjusting the Fe 3+ content in the hydrogel networks. The versatility of these smart hydrogels has been demonstrated through diverse applications, including optical filters for color regulation and colorimetric sensors for detecting UV light and chemical vapors. This proposed smart hydrogel provides a universal color-switchable platform for the development of multifunctional optical systems such as optical filters, sensors, and detectors.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 5
·736
·
IF 5.719
Yarong Xue,Mingfen Wei,Dingyi Fu,Yuqing Wu,Bo Sun,Xianghui Yu,Lixin Wu
We report a unique phenomenon, the opposite color response of a giant polyoxometalate, (NH4)42[Mo132O372(CHCOO)30] (H2O)72([Mo132]), to the existing states of human papillomavirus (HPV) major capsid protein, L1-pentamer (L1-p), and virus-like particles (VLPs). The color responses originate from the different assembly forms between [Mo132] and the capsid protein. The latter were inspected and separated by using CsCl gradient centrifugation, and validated in detail by sodium dodecyl sulfate-polyacrylamide gel-electrophoresis (SDS-PAGE), dynamic light scattering (DLS), and transmission electron microscopy (TEM) imaging. Furthermore, the intrinsic mechanisms were investigated in-depth by using XPS-based semi-quantitative analysis and well-designed peptides, revealing the critical points of L1 that determine the charge–transfer ratio between Mo(V) to Mo(VI), and consequently, the levels of [Mo132] hypochromic in different assemblies. Such a unique phenomenon is significant as it supplies a colorimetry approach to distinguish the existing states of the HPV capsid protein and would be significant in the quality assay of the HPV vaccine and existing states of other viruses in the future.Keywords:colorimetric discrimination;giant polyoxometalate;HPV capsid protein;hypochromic of molybdate clusters;opposite color response
研究领域:
化学
·
病毒学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Jiaojiao Yang,Lijun Feng,Jing Liu,Sheng Li,Na Li,Xinfeng Zhang
Mercury (Hg) is an important environmental pollutant because of its high toxicity. With the rapid industrialization, on-site monitoring Hg 2+ contamination becomes increasingly important. In this work, a facile colorimetric sensing system based on DNA-mediated charge neutralization of AuNPs as well as smartphone data acquisition was developed for on-site monitoring of Hg 2+ . The designed both-end block dsDNA system (probe DNA and block DNA) can interact with the replacement DNA and formed T-Hg 2+ -T mismatched dsDNA in the presence of Hg 2+ , thus releasing the long block DNA as well as preventing the ThT-induced neutralization of AuNPs. The color change for the AuNPs neutralization can be pictured and analyzed by a portable smartphone. This on-site Hg 2+ monitoring system was quite simple and sensitive with a low limit of detection (2.8 nM), lower than the maximum permitted amount of Hg 2+ in drinking water regulated by EPA. The accuracy of the proposed method was verified through analysis of two certified water samples, four real water samples and seven cosmetic samples, and the results agreed well with the certified values or those by atomic fluorescence spectrometry . Overall, this facile and simple sensing system is an appealing tool for on-site monitoring of Hg 2+ in water and cosmetic samples.
研究领域:
环境科学
·
分析化学
·
生物传感
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 6
·1945-1951
·
IF 5.7
Li Ya Liang,Ya Ting Gao,Shuai Chang,Jian Lv,Bin Bin Chen,Da Wei Li
Achieving dynamic optical tunability of ultralong room temperature phosphorescence (RTP) materials is critical for the design of advanced multi-level information encryption. In this work, we develop a facile metal–organic thermal polymerization strategy for the preparation of aluminium/phenylalanine phosphorescent materials (Al/Phe-PMs) with a production capacity on a kilogram scale. The Al/Phe-PMs show an ultralong lifetime of up to 1015.3 ms, with a phosphorescent quantum yield of 7.98%. Most importantly, the Al/Phe-PMs have a unique time-dependent phosphorescence color (TDPC) phenomenon because of the presence of multiple emission peaks with diverse decay times, causing the dynamic transition of RTP color from yellow to chartreuse and then to green with the extension of the decay time. Furthermore, NaOH can be used for effectively regulating the optical properties of Al/Phe-PMs, causing a great blue shift in RTP emission and a decrease in RTP efficiency. NaOH-stimulated color tunability is proven to be ascribed to the sodiation reconfiguration effect that results in the depolymerization of Al/Phe-PMs and the destruction of the rigid conformation. Benefitted by the advantages of both TDPC and color-tunability, the proposed Al/Phe-PMs can be designed for constructing dynamic colored 5D information encryption systems.
研究领域:
材料科学
·
光电
·
信息安全
✓ 已验证
DOI
高影响因子
Journal of Analytical Science and Technology
·
2024
·Vol. 15
·期 1
·1-8
·
IF 2.5
Li Yunxiao,Wang Qiuxia,Wang Yali
The abnormally expressed microRNAs (miRNAs) serve as crucial indicators for disease diagnosis and are strongly associated with the progression of various diseases. The quantification of miRNAs is highly significant for the clinical diagnosis and treatment of various types of cancers. This study utilizes the CRISPR/Cas13a system, which combines CRISPR RNA (crRNA) and CRISPR-associated Cas13a, to recognize the miRNA directly and specifically, thus activating the trans-cleavage activity of Cas13a. By integrating the CRISPR-Cas13a system with an exonuclease-iii (Exo-iii)-assisted chain cleavage of silver ions (Ag+)-aptamer and an Ag+ -based color reaction, a method for the detection of miRNA that is specific and sensitive is developed. This approach demonstrated exceptional sensitivity in detecting miRNA, with a low detection limit of 5.12 fM. Moreover, the suggested method was effectively utilized to precisely measure the amount of miRNA in intricate biological samples, demonstrating its practical applicability. Furthermore, due to its elevated sensitivity and simple probe design and fluorophore labeling, the suggested colorimetric technique holds great potential for use in clinical diagnostics.
研究领域:
分子生物学
·
医学诊断
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Chunkai Wang,Ruirui Cui,Jun Zhang,Chaoyong Deng
In this study, a Ba 3 MgTa 2 O 9 : x Sm 3+ orange-red phosphor was synthesized by a high-temperature solid-phase reaction method, and its fluorescence properties were analyzed. The Ba 3 MgTa 2 O 9 : x Sm 3+ phosphor exhibited three emission peaks at 561 nm ( 4 G 5/2 → 6 H 5/2 ), 595 nm ( 4 G 5/2 → 6 H 7/2 ), and 642 nm ( 4 G 5/2 → 6 H 9/2 ) under the excitation of 407 nm. The Ba 3 MgTa 2 O 9 :0.05Sm 3+ phosphor had good thermal stability and excellent color stability at different temperatures. Ba 3 MgTa 2 O 9 :0.05Sm 3+ phosphor is the best doping concentration phosphor, with a high color purity of 98.52 %. The XRD of the Sm 3+ ion-doped phosphor showed that its crystal structure and morphology were stable, and the doping of Sm 3+ ions did not affect its crystal structure significantly. Therefore, the Sm 3+ ion-doped phosphors in this study have potential applications and are expected to be used in the field of WLED.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Chen Yang,Zhaojun Wang,Minghui Xu,Kaikai Wei,Qianying Dai,Xiaochun Wan,OiPo Leong,Runze Lin,Chuanjian Cui,Ruyan Hou
In this study, metabolomics and chemometrics were utilized to comprehensively investigate chemical mechanisms of aroma, taste, and color formation in cold-brewed green tea (4 °C). The results showed that the typical flavor of cold-brewed green tea (tea-to-water ratio: 1:50 g/mL) developed gradually after 1 h. Compared with the hot-brewed (80 °C) condition, volatile alcohols accumulated more under cold-brewing conditions. The extraction rate of bitter compounds such as caffeine decreased by more than 40 %, while the umami compound L -theanine increased about 9.2 % compared to hot-brewed green tea. The low temperatures also reduced flavonoid extraction ratio and retained high level of chlorophyll, resulting in a greener infusion. These differences led to cold-brewed green tea exhibiting a floral aroma, umami, sweet taste, and green color. This study revealed the impact of extraction temperature on the extraction efficiency of compounds from green tea. These findings can provide analysis methods for controlling quality of cold-brewed green tea.
研究领域:
食品科学
·
植物化学
✓ 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）