Natural Pigments
Mostrando 1-12 de 74 artigos, teses e dissertações.
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1. INTERDISCIPLINARY EDUCATION THROUGH THE DEVELOPMENT OF A COST-EFFECTIVE PHOTOMETRIC PH METER SENSOR USING NATURAL PIGMENTS
There is a trend of development of analytical methodologies and technologies that allow in situ analysis, producing accurate information in real time, at low cost, using homemade experiments and devices to increase interest in scientific knowledge with a constructive approach in an interdisciplinary perspective in Chemistry Education. In this context, a phot
Química Nova. Publicado em: 2022
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2. CLOROFILA EXTRAÍDA DE RESÍDUO INDUSTRIAL DA ERVA-MATE (Ilex paraguaiensis) UMA POSSIBILIDADE DE ECONOMIA CIRCULAR
Chlorophyll is the most abundant green pigment on the planet, it is unstable and decomposes naturally. Mate-herb is a traditional native plant in the southern region of South America, and its tea is part of the local culture and extractive agriculture. The mate-herb industry generates as a by-product a resinous material rich in chlorophyll whose use is propo
Química Nova. Publicado em: 2022
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3. Functional properties and Bioactivities of Cleistocalyx nervosum var. paniala berry plant: a review
Abstract In treating various diseases, natural therapies are widely preferred in the modern era to synthetic drugs as they offer little or no side effects, in contrast to synthetic drugs. However, there is limited scientific knowledge about plants that have a broad range of medicinal properties. Cleistocalyx nervosum var. paniala, native to Thailand and gene
Food Sci. Technol. Publicado em: 2020-12
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4. What is new for 2020
Photophysical processes in multicomponent solutions composed by natural pigments, extracted from Caesalpinia echinata (Brazil-wood) leaves, are investigated. Beacuse of the main fluorescent molecules in these solutions are the chlorophyll a, chlorophyll b and pheophytin a, all features are discussed regarding these three pigments. It is observed that the flu
J. Braz. Chem. Soc.. Publicado em: 2020-01
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5. Selective Inner-Filter on the Fluorescence Response of Chlorophyll and Pheophytin Molecules Extracted from Caesalpinia echinata Leaves
Photophysical processes in multicomponent solutions composed by natural pigments, extracted from Caesalpinia echinata (Brazil-wood) leaves, are investigated. Beacuse of the main fluorescent molecules in these solutions are the chlorophyll a, chlorophyll b and pheophytin a, all features are discussed regarding these three pigments. It is observed that the flu
J. Braz. Chem. Soc.. Publicado em: 2020-01
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6. Bioaccumulation, Growth and Photosynthetic Response of a New Found in Bulgaria Invasive Species Lemna minuta and L. valdiviana to Heavy Metal Pollution
RESUMO: Metais pesados podem ser encontrados no meio ambiente como ingredientes naturais ou de práticas agrícolas, industriais e químicas. Este estudo foi conduzido com o objetivo de traçar o potencial das plantas aquáticas L. minuta e L. valdiviana para a bioacumulação de Cu, Cd e Pb a partir de água contaminada com baixos níveis desses elementos.
Planta daninha. Publicado em: 04/11/2019
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7. VALORIZATION OF SOLID WASTES FROM THE BREWERY AND BIODIESEL INDUSTRIES FOR THE BIOPRODUCTION OF NATURAL DYES
This study aims to assess a new approach for concomitant valorization of two industrial wastes - raw glycerin and spent brewer’s yeast - for the bioproduction of valuable carotenoids. Microbial pigments have numerous applications in the food and cosmetic industries. First, four cultures of yeasts were screened using pure glycerol and either (NH4)2SO4 or ur
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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8. Conservation of Vriesea flammea L.B.Sm., an endemic Brazilian bromeliad: effects of nutrients and carbon source on plant development
Resumo Bromeliaceae é restrita à região neotropical, com alto grau de endemismo, que contribui para o aumento da biodiversidade, devido às características morfológicas dos indivíduos. Objetivando desenvolver uma tecnologia in vitro de conservação para obtenção de plantas com vistas à reintrodução, sementes de Vriesea flammea L.B.Sm. foram colet
Braz. J. Biol.. Publicado em: 04/07/2019
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9. Salt stress and exogenous application of hydrogen peroxide on photosynthetic parameters of soursop
RESUMO Objetivou-se com este trabalho avaliar as trocas gasosas e os pigmentos fotossintéticos de mudas de gravioleira cv. Morada Nova irrigadas com águas salinas e submetidas à aplicação exógena de peróxido de hidrogênio via embebição das sementes e pulverizações foliares. O estudo foi conduzido em sacolas plásticas sob condições de casa de v
Rev. bras. eng. agríc. ambient.. Publicado em: 2019-04
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10. Quantum Chemical Investigation of the Intramolecular Copigmentation Complex of an Acylated Anthocyanin
Anthocyanins are the natural plant pigments responsible for most of the red, blue and purple colors of flowers and fruit. One method of stabilization of the color of anthocyanins in nature is intramolecular copigmentation, in which a copigment molecule covalently attached to one of the sugar residues complexes with the anthocyanin cation chromophore. In the
J. Braz. Chem. Soc.. Publicado em: 2019-03
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11. Chemistry Inspired by the Colors of Fruits, Flowers and Wine
ABSTRACT An overview is provided of the status of research at the frontiers of investigation of the chemistry and photochemistry of two classes of natural plant pigments, the anthocyanins and the betalains, as well as of the pyranoanthocyanin pigments formed from anthocyanins during the maturation of red wine. Together, anthocyanins and betalains are respons
An. Acad. Bras. Ciênc.. Publicado em: 2018
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12. Stability and degradation kinetics of crude anthocyanin extracts from H. sabdariffa
Abstract Hibiscus sabdariffa is an under-utilized plant that has reported to have great potential in the food industry. The vibrant red pigment from the calyces indicate a source of anthocyanins. Anthocyanins would make ideal natural food colourants with additional nutritional benefits however stability is a hindering factor. Stability studies were the main
Food Sci. Technol. Publicado em: 29/05/2017