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| Zovico,Cristiane; Fonseca,Homero; Calori-Domingues,Maria Antonia; Glória,Eduardo Micotti; Borguini,Renata Galhardo; Silveira,Vanessa Prezzotto; Piedade,Sônia S.. |
| Quarenta e dois lotes comerciais de 300 kg de amendoim descascado, produzidos em 1997 e contaminados com aflatoxinas, foram submetidos à seleção eletrônica pela cor para verificar a eficiência desse processo na melhoria da qualidade de lotes de amendoim quanto à diminuição da contaminação com aflatoxinas. Os lotes de amendoim foram classificados pelo tamanho como normalmente utilizados pela cerealista, sendo 22 lotes de amendoim graúdo (7,5 a 7,9mm) e 20 lotes de amendoim miúdo (6,4 a 7,1mm), nos quais os níveis de contaminação inicial variaram de 7 a 3.763 mg/kg e de 76 a 3.309 mg/kg, respectivamente. Nos 42 lotes, não foram detectadas aflatoxinas em dois lotes de amendoim graúdo e 1 de amendoim miúdo. Este trabalho demonstrou que o processo de seleção... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxina; Amendoim; Seleção eletrônica. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000200016 |
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| Jesus,Monalisa Santana Coelho de; Santiago,Manuela Cristina Pessanha de Araújo; Pacheco,Sidney; Gouvêa,Ana Cristina Miranda Senna; Nascimento,Luzimar da Silva de Mattos do; Borguini,Renata Galhardo; Guerra,José Guilherme Marinho; Espindola,José Antonio Azevedo; Godoy,Ronoel Luiz de Oliveira. |
| ABSTRACT Acylated anthocyanins from a purple-fleshed sweet potato (PFSP), obtained by organic cultivation in Brazil, were characterized after separation by a high performance liquid chromatography-diode array detector (HPLC-PDA). These anthocyanins were manually collected at the detector output, concentrated and injected into a high resolution mass spectrometer (ESI-QTOF-MS2). Twenty-two acylated anthocyanins were detected. Among them, sixteen had been reported in the literature and six, derived from peonidin were reported for the first time in sweet potato roots in this study. These compounds showed molecular ions with accurate mass/charge ratios (m/z) of 909.2081, 961.3010, 961.2571, 963.3345, 1123.2932 and 1179.3862. Although anthocyanins in PFSP have... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenolic; Mass spectrometry; Natural dye; Antioxidant. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000400901 |
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| Borguini,Renata Galhardo; Pacheco,Sidney; Chávez,Davy William Hidalgo; Couto,Giovana Almeida; Wilhelm,Allan Eduardo; Santiago,Manuela Cristina Pessanha de Araújo; Nascimento,Luzimar da Silva de Mattos do; Jesus,Monalisa Santana Coelho de; Godoy,Ronoel Luiz de Oliveira. |
| ABSTRACT: Vitamin A deficiency is the third most important micronutrient deficiency having a significant impact on public health worldwide. The aim of this study was to develop a carotenoid extraction process with edible vegetable oils, using a central composite design which, concurrently, enriches the oils with provitamin A carotenoids. The stability of carotenoids in the oil and their shelf life was also evaluated. The process also aimed to meet the Recommended Daily Intake for vitamin A (600 μg retinol equivalent for an adult) with the enriched oil. The results showed that 20 % of the vegetable matrix (dried carrot) in vegetable oil and 5 min of extraction time was an optimum combination for both soy oil (64.43 μg retinol equivalent mL−1) and olive oil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Retinol; Food-to-food fortification; Oil shelf life; Carotenoid stability; Central composite design. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000500901 |
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| Pacheco,Sidney; Peixoto,Fernanda Marques; Borguini,Renata Galhardo; Nascimento,Luzimar da Silva de Mattos do; Bobeda,Claudio Roberto Ribeiro; Santiago,Manuela Cristina Pessanha de Araújo; Godoy,Ronoel Luiz de Oliveira. |
| In order to generate simple, efficient analytical methods that are also fast, clean, and economical, and are capable of producing reliable results for a large number of samples, a micro scale extraction method for analysis of carotenoids in vegetable matrices was developed. The efficiency of this adapted method was checked by comparing the results obtained from vegetable matrices, based on extraction equivalence, time required and reagents. Six matrices were used: tomato (Solanum lycopersicum L.), carrot (Daucus carota L.), sweet potato with orange pulp (Ipomoea batatas (L.) Lam.), pumpkin (Cucurbita moschata Duch.), watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) and sweet potato (Ipomoea batatas (L.) Lam.) flour. Quantification of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-carotene; Α-carotene; Lycopene. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500011 |
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