A5085440920- Phytochemicals and Antioxidant Activities
- Agricultural and Food Sciences
- Botanical Research and Applications
- Phytochemistry Medicinal Plant Applications
- Dye analysis and toxicity
- Fermentation and Sensory Analysis
- Antioxidant Activity and Oxidative Stress
- Coffee research and impacts
- Pomegranate: compositions and health benefits
- Horticultural and Viticultural Research
- Biochemical Analysis and Sensing Techniques
- Food Science and Nutritional Studies
- Microbial Metabolites in Food Biotechnology
- Postharvest Quality and Shelf Life Management
- Polysaccharides Composition and Applications
- African Botany and Ecology Studies
- Microencapsulation and Drying Processes
- Potato Plant Research
- Polysaccharides and Plant Cell Walls
- Consumer Attitudes and Food Labeling
- Tea Polyphenols and Effects
- Morinda citrifolia extract uses
- Natural Antidiabetic Agents Studies
- Plant Gene Expression Analysis
- Banana Cultivation and Research
Brazilian Agricultural Research Corporation
2014-2020
Universidade Federal Rural do Rio de Janeiro
2012-2017
Universidade Federal do Rio de Janeiro
2011-2015
Departamento de Ciência e Tecnologia
2012
Availability of analytical standards is a critical aspect in developing methods for quantitative analysis anthocyanins. The anthocyanins cyanidin-3-O-glucoside and cyanidin-3-O-rutinoside were isolated from samples freeze-dried açaí (Euterpe oleraceae Mart.), which round purple well-known palm fruit Brazil, then used as standards. isolation the was performed by High Performance Liquid Chromatography (HPLC), using an adapted six-channel selection valve. identification anthocyanin pigments...
M. floribunda fruit was studied to characterize its chemical composition. The composition, bioactive compounds, antioxidant activity and volatiles of the were determined. composition determined according AOAC AOCS, compounds by HPLC, GCMS ABTS+ DPPH methods. freeze-dried 1.89 g·100 g-1, 2.43 4.78 g-1 90.89 ashes, lipids, proteins total carbohydrates on a dry base, respectively. concentration carotenoids 52.22 mg·100 for flavonoid rutin 78.56 g-1. gallic ellagic acid contents 5.45 mg·g-1 2.21...
Coffee is currently the second largest commodity on world market today, and there great concern about quality of beans exported from producer countries to Europe USA. Practices such as using blends different species adding low-cost raw materials, chicory, corn, soybean, impair sensory functional characteristics drink made roasted ground coffee beans. There a need adopt more efficient analytical methods than microscopy technique used. The first chromatographic method used determine fraud was...
Introduction. Tropical fruit have a good commercial potential as natural colorants; however, they are underexploited. Anthocyanins from jamelao (Syzygium cumini ) peel been shown to be an alternative source of pigments for the food industry. Due toxicity some synthetic colorants environment and human health, these artificial being replaced by pigments. This study was carried out evaluate properties technological feasibility using powder colorant. Materials methods. Over 5 month period...
Pomegranate (Punica granatum L.) is a fruit with long medicinal history, especially due to its phenolic compounds content, such as the anthocyanins, which are reported one of most important natural antioxidants. The analysis anthocyanins by high performance liquid chromatography (HPLC) can be considered an tool evaluate quality pomegranate juice. For research laboratories major challenge in using HPLC for quantitative analyses acquisition purity analytical standards, since these expensive...
Acylated anthocyanins from a purple-fleshed sweet potato (PFSP), obtained by organic cultivation in Brazil, were characterized after separation high performance liquid chromatography-diode array detector (HPLC-PDA). These manually collected at the output, concentrated and injected into resolution mass spectrometer (ESI-QTOF-MS2). Twenty-two acylated detected. Among them, sixteen had been reported literature six, derived peonidin for first time roots this study. compounds showed molecular...
Fruit juices consumption has increased in recent years due to the perception of as a natural source compounds that provide health benefits, such anthocyanins, an important antioxidant. For industrial production blackberry, juice microfiltration process is commonly used, but high viscosity this fruit, enzymatic pretreatment necessary. The objectives study were select operating variables (temperature and enzyme concentration) for evaluate its effect on anthocyanins content clarifi ed...
O arroz preto, nutricionalmente superior ao branco por possuir teores mais elevados de proteínas e fibras tem sido alvo do interesse gastronômico nacional internacional devido à presença pigmentos, sabor aroma diferenciados. pigmento presente no pericarpo preto pertence classe das antocianinas, substâncias que têm pesquisadas as suas contribuições na redução risco doenças crônicas. Neste trabalho tais foram investigadas da cultivar IAC 600, desenvolvida pelo Instituto Agronômico Campinas...
A qualidade do café é um fator muito importante para a industria cafeeira e sobretudo o Brasil, que atualmente considerado principal produtor exportador produto. Destaca-se ocorrência de adulterações no pela adição milho, cevada, soja centeio. Visando desenvolver método detecção com alta sensibilidade seletividade, objetivo trabalho foi determinar perfil fragmentação cinco açúcares potencialmente marcadores químicos adulteração otimizar os parâmetros operacionais técnica espectrometria...
The present study analyzed the nutricosmetics adequacy referring to carotenoids contents, such as β-carotene, lutein, lycopene and zeaxanthin, these findings were compared with contents declared by manufacturers. Nineteen carotenoids-containing purchased at retail market in Rio de Janeiro city 2012. Two methodologies of extraction used according type shell (capsules), carriers (excipients) carotenoids. Quantification determination profile performed a High Performed Liquid Chromatograph...