Review
Chemistry, Physical
Lenize F. Maia, Vanessa E. De Oliveira, Howell G. M. Edwards, Luiz Fernando C. De Oliveira
Summary: This review focuses on the linear conjugated polyenes and their application in biomolecules, with Raman spectroscopy being used for molecular characterization. Conjugated polyenes are responsible for the yellow, orange, red and purple natural colors observed in flora and fauna, and are also a key target for astrobiology, with Rama spectroscopy being discussed as a main analytical tool for their detection extra-terrestrially.
Article
Multidisciplinary Sciences
Nicholas M. Justyn, Kyle B. Heine, Wendy R. Hood, Jennifer A. Peteya, Bram Vanthournout, Gerben Debruyn, Matthew D. Shawkey, Ryan J. Weaver, Geoffrey E. Hill
Summary: This study investigated the formation mechanism of red eyespots in Tigriopus californicus copepods and found that the red eyespots are the result of a combination of structural and pigmentary coloration.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2022)
Article
Chemistry, Analytical
Edward Curran Eggertson, Francesca Venturini
Summary: This study investigates the changes in carotenoid concentration in extra virgin olive oil (EVOO) as it oxidizes under accelerated thermal aging using resonant Raman spectroscopy (RRS). The conventional method, HPLC, used to determine carotenoid concentration is costly and time-consuming. The study finds that the resonant Raman technique amplifies the weak carotenoid signals and identifies Raman intensity ratios as indicators of aging effects.
Review
Cell Biology
Elvin S. Allakhverdiev, Venera V. Khabatova, Bekzhan D. Kossalbayev, Elena V. Zadneprovskaya, Oleg V. Rodnenkov, Tamila V. Martynyuk, Georgy V. Maksimov, Saleh Alwasel, Tatsuya Tomo, Suleyman I. Allakhverdiev
Summary: This review article discusses the applications of Raman spectroscopy in the fields of medicine, biotechnology, and algal research. It highlights the common applications of Raman spectroscopy in studying carotenoids and lipids in medicine and biotechnology. It also summarizes recent advances in using Raman microspectroscopy for microalgal detection. The article concludes by discussing the advantages, perspectives, and other important aspects of the Raman spectroscopy method in plant and other species/object research.
Article
Plant Sciences
Biljana Todorovic, Veno Jasa Grujic, Andreja Urbanek Krajnc, Roman Kranvogl, Jana Ambrozic-Dolinsek
Summary: The study aimed to determine the content of astaxanthin and its esterified forms in Haematococcus pluvialis samples, identified eleven astaxanthin monoesters, six astaxanthin diesters, and found that all three solvents (MTBE, HEX-IPA, ACE) were effective for extraction, with MTBE and hexane-isopropanol extracting the most astaxanthin.
Article
Food Science & Technology
Stefan Kolasinac, Ilinka Pecinar, Dario Danojevic, Zora Dajic Stevanovic
Summary: Five Balkan paprika varieties were studied at physiological maturity using Raman spectroscopy to distinguish genetic differences. Different pre-processing methods were applied to create classification models, with Quadratic Discriminant Analysis showing the best discrimination power. This study demonstrates the applicability of chemometric modeling with Raman spectroscopy for assessing nutritionally similar samples.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Spectroscopy
V. S. Novikov, V. V. Kuzmin, S. M. Kuznetsov, M. E. Darvin, J. Lademann, E. A. Sagitova, L. Yu Ustynyuk, K. A. Prokhorov, G. Yu Nikolaeva
Summary: The study demonstrated that the positions and intensities of C-C and C=C stretching bands in Raman spectra depend on the length of the polyene chain and type of isomer. Experimental Raman spectra of beta-carotene powder matched well with DFT simulations for the all-trans form. Additionally, the presence of conjugated double bonds in a polyene structure leads to shifts in peak positions towards lower wavenumbers with increased intensities.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Review
Chemistry, Medicinal
Anagha Nair, Ankesh Ahirwar, Shashikala Singh, Reeta Lodhi, Aishwarya Lodhi, Anshuman Rai, Dipak A. Jadhav, Harish, Sunita Varjani, Gurpreet Singh, Justine Marchand, Benoit Schoefs, Vandana Vinayak
Summary: Natural astaxanthin is richer than synthetic astaxanthin, but cultivating it in photobioreactors is expensive and downstream processing techniques for solubilization are not cost-effective. As a result, the cost of astaxanthin is high, leading pharmaceutical and nutraceutical companies to opt for synthetic astaxanthin. This review discusses the chemical character of astaxanthin, more cost-effective cultivating techniques, and its bioavailability. Moreover, the antioxidant properties of this microalgal product against various diseases are discussed, which make it a promising drug for reducing inflammation and its consequences.
Article
Biotechnology & Applied Microbiology
Luis Angel Cabanillas-Bojorquez, Erick Paul Gutierrez-Grijalva, Ramon Ignacio Castillo-Lopez, Laura Aracely Contreras-Angulo, Miguel Angel Angulo-Escalante, Leticia Xochitl Lopez-Martinez, Erika Yudit Rios-Iribe, Jose Basilio Heredia
Summary: Through lactic acid fermentation, chemical and nutritive constituents were characterized from liquor of shrimp waste. The study found that the liquor is rich in proteins, carbohydrates, minerals, and carotenoids, with potential pharmaceutical applications due to its antioxidant properties.
FERMENTATION-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Zi-Yuan Wang, Rong Zhu
Summary: This study presents a middle meet strategy to synthesize high-molecular-weight, stable, and solution-processable conjugated cumulene polymers. The stability-conjugation dilemma is successfully addressed and electronic communication between cumulene units is found to be dependent on the aromaticity of the pi-spacers, allowing for flexible energy-level adjustment and the synthesis of narrow band gap polymers.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Plant Sciences
Tianyi Dou, Lee Sanchez, Sonia Irigoyen, Nicolas Goff, Prakash Niraula, Kranthi Mandadi, Dmitry Kurouski
Summary: Raman spectroscopy can detect biochemical changes induced by biotic and abiotic stresses in plants, offering a new possibility for confirmatory diagnostics.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Tushar Dhanani, Tianyi Dou, Kishan Biradar, John Jifon, Dmitry Kurouski, Bhimanagouda S. Patil
Summary: In this study, Raman spectroscopy was used to investigate the spectral features of watermelon at different maturity stages. The results showed that changes in the spectral features of carotenoids on the fruit surface could be used as a marker for fruit maturity. The presence of two major carotenoids, lutein and beta-carotene, was confirmed and their intensity decreased as the fruit matured. The method was able to successfully predict the maturity of watermelon samples with high accuracy.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Spectroscopy
Guohua Yao, Shuju Guo, Wenjie Yu, Muhammad Muhammad, Jianguo Liu, Qing Huang
Summary: Astaxanthin is a xanthophyll carotenoid widely found in aquatic animals, with various physiological functions. Different optical isomers of astaxanthin have differences in physiological activities. Raman spectroscopy can distinguish the three optical isomers of astaxanthin.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Biotechnology & Applied Microbiology
Mengmeng Liu, Yang Yang, Li Li, Yan Ma, Junchao Huang, Jingrun Ye
Summary: A new bacterium was discovered to accumulate large amounts of carotenoids using various agro-industrial byproducts, and specific carotenoids were produced through gene mutations and a high-efficiency synthesis platform was constructed. Additionally, high-titer astaxanthin was produced through balancing key enzymes, showcasing the potential of this industrially important bacterium for carotenoid production.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Piotr Kabacinski, Pietro Marabotti, Daniele Fazzi, Vasilis Petropoulos, Andrea Iudica, Patrick Serafini, Giulio Cerullo, Carlo S. S. Casari, Margherita Zavelani-Rossi
Summary: Investigated the photophysics of one-dimensional linear nanostructures and revealed their excellent mechanical, thermal, and electronic properties. Studied the excited state relaxation processes using experimental and computational methods, providing important insights into photoinduced events in low-dimensional carbon-based materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Physical
Lenize F. Maia, Vanessa E. De Oliveira, Howell G. M. Edwards, Luiz Fernando C. De Oliveira
Summary: This review focuses on the linear conjugated polyenes and their application in biomolecules, with Raman spectroscopy being used for molecular characterization. Conjugated polyenes are responsible for the yellow, orange, red and purple natural colors observed in flora and fauna, and are also a key target for astrobiology, with Rama spectroscopy being discussed as a main analytical tool for their detection extra-terrestrially.
Article
Food Science & Technology
Jaqueline Vieira Piovezana Gomes, Livya Alves de Oliveira, Julia d'Almeida Francisquini, Pamella Cristine Anunciacao, Rodrigo Stephani, Luiz Fernando C. de Oliveira, Italo T. Perrone, Antonio F. de Carvalho, Ceres Mattos Della Lucia
Summary: The study utilized spray drying technology to develop whey protein concentrate (WPC) and whey protein concentrate admixture of microencapsulated curcumin (TWPC), both showing spherical, irregular, particulate morphology with agglomeration points and no apparent cracks. By comparing the colorimetry values of WPC and TWPC, it was found that the addition of curcumin extract led to a tendency towards yellow coloration. The research successfully developed TWPC without altering the technological characteristics of WPC.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2021)
Article
Zoology
Beatriz Seixas Rezende, Paula Spotorno-Oliveira, Sthefane D'avila, Lenize Fernandes Maia, Luiz Fernando Cappa de Oliveira
Summary: Analyzing the pedal mucus of vermetids Eualetes tulipa and Petaloconchus varians using Raman spectroscopy and scanning electron microscopy revealed a biogenic mineralization process with calcium carbonate crystals mainly in the forms of calcite and aragonite. The formation of these crystals is likely through secondary nucleation from calcium carbonate precursors in the feeding mucus.
Article
Spectroscopy
Lenize F. Maia, Tatiani A. Gonzaga, Mariana T. C. Campos, Gisele Lobo-Hajdu, Howell G. M. Edwards, Luiz F. C. de Oliveira
Summary: Sponges are colorful filter feeding animals that host a large number of microorganisms in a symbiotic relationship, with colors derived from biosynthesis or symbionts. Vibrational spectroscopy identified coloration patterns in nine sponge species, showing carotenoids responsible for red-orange, green, and blue colors, and melanin for black species. The study suggests carotenoid-based pigmentation in sponges provided by symbionts plays a role in their evolutionary and ecological success, with vibrational spectroscopy as a valuable tool for identifying structural differentiation of carotenoids in sponge microbiomes from different environments.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Food Science & Technology
Elza Sales Queiroz, Ana Luiza Lopes Rezende, Italo Tuler Perrone, Julia D'Almeida Francisquini, Antonio Fernandes de Carvalho, Natalia Maria Germano Alves, Luiz Fernando Cappa de Oliveira, Rodrigo Stephani
Summary: This study characterized goat milk powder with and without hydrolyzed lactose, with or without added maltodextrin, by analyzing their physical-chemical characteristics after drying and under different storage conditions. Drying resulted in homogeneous powders in terms of dispersion, solubility, and morphology. Variations in moisture during storage influenced powder crystallization, and an increase in storage temperature played a decisive role in browning and the formation of free hydroxymethylfurfural.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Helder de Souza, Luiz Felipe O. Faria, Felipe M. Scaldini, Renata Diniz, Howell G. M. Edwards, Luiz Fernando C. de Oliveira
Summary: In this study, a series of metal complexes containing the rhodizonate ion were synthesized and characterized by various methods. The results revealed similarities and differences in the structural and spectroscopic properties of the different metal complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Review
Spectroscopy
Monisa Gouvea Silva, Igor Lima de Paula, Rodrigo Stephani, Howell G. M. Edwards, Luiz Fernando Cappa de Oliveira
Summary: This review article evaluates the use of Raman spectroscopy in quality control of dairy products, concluding that it is a viable and advantageous technique for analyzing milk and its derivatives.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Spectroscopy
Christopher Brooke, Howell Edwards, Luiz F. C. de Oliveira, Richard Telford, Alex Surtees
Summary: The mural paintings in the late medieval Saracens Head Inn, discovered in the 1980s and 1990s, represent a rare surviving example of domestic Tudor artwork in the region. Through analysis of artistic design, archaeological context, and paint samples, the original pigment palette used by the Tudor artist(s) and modern pigments introduced during conservation work have been identified.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Environmental Sciences
Julia Fonseca Colombo Andrade, Luiz Fernando Coutinho de Oliveira, Jaiza Ribeiro Mota e Silva
Summary: The experiment demonstrated that wastewater rich in suspended solids reduces macroporosity of the soil, resulting in a decrease in hydraulic conductivity and cumulative infiltration. The Kostiakov-Lewis model was found to be the most suitable infiltration model, except for the treatment with the highest concentration of solids where the Swartzendruber model performed the best.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Food Science & Technology
Nathalia da Silva Campos, Igor Lima de Paula, Italo Tuler Perrone, Luiz Fernando Cappa de Oliveira, Antonio Carlos Doriguetto, Alan Wolfschoon, Rodrigo Stephani
Summary: This study characterized the white dots in doce de leite using various analytical techniques. Results showed that the white dots were composed mainly of calcium citrate hexahydrate (CCH), amino acids, and a small amount of phosphates. The study also identified the formation mechanism of the white dots, suggesting the role of alpha(s1)-casein in heterogeneous nucleation and crystal growth.
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
(2023)
Article
Spectroscopy
Mariana T. C. Campos, Lenize F. Maia, Helio F. Dos Santos, Howell G. M. Edwards, Luiz F. C. de Oliveira
Summary: In this study, Raman spectroscopy and DFT calculations were used to identify pigments biosynthesized during tomato ripening. The Raman spectra showed that carotenes and flavonoids are the main pigments in the tomato exocarp. The composition of carotenoids changed during maturation, while flavonoids/polyphenols remained constant. These findings provide insights into the chemical synergism between carotenoids and flavonoids in tomato coloring.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Optics
Luana da Silva Oliveira, Eduarda Firmino Barbosa, Felipe Cabral Borges Martins, Guilherme de Freitas Silva, Thais Karine de Lima Rezende, Carlos S. Jose Filho, Helliomar Pereira Barbosa, Acacio A. Andrade, Luiz Fernando Cappa de Oliveira, Marcio Sousa Goes, Clebio Soares Nascimento, Jefferson Luis Ferrari
Summary: Ti1-xYxO2:Eu3+ luminescence materials were prepared using the sol-gel method and heat treated. The luminescent properties and energy transfer processes were studied, showing intense reddish color emission under UV excitation, even in a water solution. The theoretical band gap value indicated that the material is suitable for Eu3+ hosting. These luminescence materials have potential applications in red light emitting diodes, biological markers, and solid-state lighting.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Igor Lima de Paula, Lais Lima Melquiades, italo Tuler Perrone, Erica Felipe Mauricio, Biany Aparecida de Castro Dias, Antonio Fernandes de Carvalho, Luiz Fernando Cappa de Oliveira, Rodrigo Stephani
Summary: Lactose-free fat-reduced powdered milk produced through spray drying has better characteristics during storage compared to freeze-dried products, and drying via spray drying is a better alternative than freeze-drying for both lactose-hydrolyzed and non-hydrolyzed products.
REVISTA VIRTUAL DE QUIMICA
(2023)
Article
Chemistry, Multidisciplinary
Jaqueline Vieira Piovezana-Gomes, Pamella Cristine Anunciacao, Julia d'Almeida Francisquini, Livya Alves Oliveira, Luiz Fernando Cappa de Oliveira, Antonio Fernandes de Carvalho, Rodrigo Stephani, Italo Tuler Perrone, Ceres Mattos Della Lucia
Summary: This study aimed to characterize whey protein concentrates (WPC) added to turmeric extracts obtained by spray and foam mat drying. Various measurements were carried out including drying parameters, morphology, particle size distribution, Raman spectroscopy, total phenolic compounds, curcumin quantification, and antioxidant capacity. The spray drying process exhibited a higher drying efficiency and faster speed. The spray-dried WPC showed lower losses of curcumin and total phenolics compared with foam mat-dried WPC, and an increase in antioxidant capacity was observed for both drying methods.
REVISTA VIRTUAL DE QUIMICA
(2023)
