PREDIÇÃO DOS TEORES DE COMPOSTOS FENÓLICOS E FLAVONOIDES NA PARTE AÉREA DAS ESPÉCIES Secale cereale L., Avena strigosa L. E Raphanus sativus L. POR MEIO DE ESPECTROSCOPIA NO INFRAVERMELHO PRÓXIMO (NIR)

Souza, Monique; Kuhnen, Shirley; Kazama, Daniele Cristina da Silva; Kürtz, Claudinei; Trapp, Talita; Müller, Vilmar; Comin, Jucinei José

doi:10.21577/0100-4042.20170120

Cited by 6 publications

(8 citation statements)

References 18 publications

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“…The shoot aqueous extracts from cover crops presented the following concentrations Research, Society and Development, v. 9, n. 10, e5859108579, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i10.8579 regarding total phenols per plant dry mass: 0.76 mg g-1 for the radish, 0.4 mg g-1 for the black oat and 1.23 mg g-1 for the hairy vetch. Higher values were found by Souza et al (2017), who reported 8.19 mg g-1 for the dry mass of black oat cut at 80 days and 15.97 mg g-1 for the dry mass of radish cut at 60 days. Such variation in the research results might be ascribed to several factors that interfere in the concentration of phenols produced by the plants such as: weather conditions, nutritional status and the plant development stage (Pires & Oliveira, 2011;Farooq et al 2020).…”

Section: Total Phenol Quantificationmentioning

confidence: 63%

Allelopathic potential from cover crops aqueous extract on weeds and maize

Reginatto

Bonome

Giovanetti

et al. 2020

RSD

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Cover crops are used as a strategy to recover degraded soils, improving their physical, chemical and biological characteristics, as well as assisting in the control of weeds through allelochemical compounds released by the shoot degradation process. This work aimed to evaluate the phytotoxicity of the aqueous extract of the cover crops Raphanus sativus L., Avena strigosa (Schreb) and Vicia villosa R. on the germination and initial growth of Zea mays, Amaranthus spinosus L. and Ipomoea grandifolia (Dammer) O'Donnell, as well as to identify and quantify the phenolic compounds present in the extract. Straws from the dried and crushed cover crops were used. The extracts were obtained by mixing 10% R. sativus and A. strigosa, and 12% V. villosa in distilled water (m/v). DIC was used, with four replications, in a 3x4 factorial scheme, with 3 cover crops (R. sativus, A. strigosa and V. villosa) and 4 concentrations (0%, 25%, 50% and 75%). The variables analyzed were: germination, germination speed index (GSI), seedling growth, root protrusion (RP), root protrusion speed index (RPSI) and dry mass of the root and shoot. Higher concentrations of the extracts affected the initial development of maize and weeds. The phenolic compounds identified in greater quantity were benzoic acid, p-coumaric acid, followed by ferulic acid and p-hydroxybenzoic acid. It is suggested that studies of the same nature be carried out in the field, since the interactions between soil microorganisms, climatic conditions can interfere with the results.

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Section: Total Phenol Quantificationmentioning

confidence: 63%

Allelopathic potential from cover crops aqueous extract on weeds and maize

Reginatto

Bonome

Giovanetti

et al. 2020

RSD

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“…As análises para determinação de compostos fenólicos e flavonoides totais via cromatografia ou espectrofotometria via UV-VIS são consideradas destrutivas e geram resíduos químicos (SOUZA, et al, 2017). Os mesmos autores realizaram um estudo explorando a possibilidade de utilização da espectroscopia no infravermelho próximo (NIR) juntamente com métodos quimiométricos e análise multivariada para quantificação de fenóis e flavonoides totais, para desenvolver uma metodologia mais rápida, precisa, de baixo custo e sem utilização de reagentes.…”

Section: Métodos De Análise Para Determinação De Compostos Bioativosunclassified

Resíduos citrícolas: uma breve revisão

Pereira

Marquardt

Corbellini

et al. 2018

RJP

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O Brasil é um dos países que mais desperdiçam alimentos, como frutas e hortaliças. A procura por alimentos saudáveis aumenta e o desperdício segue o mesmo caminho. A população está investindo mais em alimentos saudáveis e atenta às suas propriedades funcionais, a fim de prevenir e diminuir problemas de saúde. A produção de farinhas a partir da casca e polpa de mandarina é descrita como forma de reaproveitamento de resíduos provenientes de raleio. Os citrus são conhecidos como antioxidantes, prevenindo doenças e conferindo homeostasia às células. São ricos em compostos bioativos como os compostos fenólicos que conferem cor e sabor ao fruto, e os flavonoides com ação anti-inflamatória, antialergênica, ambos responsáveis pela atividade antioxidante quando consumidos. O presente trabalho de revisão tem como enfoque o desperdício de alimentos, reaproveitamento de resíduos citrícolas, a importância de compostos bioativos como compostos fenólicos e flavonoides, bem como métodos analíticos para a quantificação dos mesmos.

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“…The majority of these methods are indirect methods that are based on the investigation of correlations and adjustment of calibration models between the properties of interest and others that are easier to measure. The development of sophisticated statistical analyses and reliable software has led to the use of spectroscopy in the near-infrared region (NIRS) in several areas such as agriculture, forensic sciences and industry (Menezes et al, 2014;Souza et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…This uniqueness was possible from a complete comparison of the spectral profile of the samples with the reference tannin. Results from studies with NIRS state that their spectra can be considered as a "spectral signature" that can accurately the identify the investigated raw material (Durgante et al, 2013;Souza et al, 2017). In this context, we developed a predictive model of FT-NIR to distinguish tannins that occur in the xylem tissue (wood) of different forest species in the Amazon region.…”

Section: Introductionmentioning

confidence: 99%

Near infrared spectroscopy as a tool to discriminate tannins from Amazonian species

Nascimento,

Araújo,

Silva

et al. 2022

Ciênc. agrotec.

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Near infrared spectroscopy (NIR) is a tool capable of providing efficient results for organic molecules of different materials. We developed a predictive model using Fourier Transform NIR Spectroscopy to distinguish the types of tannins in different forest species in the Amazon. Samples were obtained from different regions of the State of Amazonas/Brazil, and tests for tannins were performed, including obtaining NIRS spectra. The assembly of spectral data matrices versus analytes of interest was crossed with the results of traditional analyses. In addition, a calibration and validation set was constructed for condensed tannins, hydrolyzable tannins, and samples with no tannins. Finally, the performance of classification models was evaluated for sensitivity, identification index, and errors. The condensed tannin classes were detected in 63% of the species studied, followed by 34% of the species not containing tannin. The discriminant analysis produced groupings of classes, with a hit sensitivity index >90%. The developed model can be applied in studies of ecology, forestry and chemotaxonomy, with a focus on phenolic compounds such as tannins. The proposed methodology has advantages over the reference methods, reflected as a lower need for sample preparation, shorter analysis time, no use of reagents, and, consequently, no generation of waste.

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PREDIÇÃO DOS TEORES DE COMPOSTOS FENÓLICOS E FLAVONOIDES NA PARTE AÉREA DAS ESPÉCIES Secale cereale L., Avena strigosa L. E Raphanus sativus L. POR MEIO DE ESPECTROSCOPIA NO INFRAVERMELHO PRÓXIMO (NIR)

Cited by 6 publications

References 18 publications

Allelopathic potential from cover crops aqueous extract on weeds and maize

Allelopathic potential from cover crops aqueous extract on weeds and maize

Resíduos citrícolas: uma breve revisão

Near infrared spectroscopy as a tool to discriminate tannins from Amazonian species

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