Antifungal activity of natural and enzymatically-modified flavonoids isolated from citrus species

Salas, María Paula; Céliz, Gustavo; Geronazzo, Hugo Isidoro; Daz, Mirta Elizabeth; Resnik, Silvia L.

doi:10.1016/j.foodchem.2010.07.100

Cited by 125 publications

(86 citation statements)

References 25 publications

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“…The most common flavonoids found in Citrus sp. can be classified as flavanones, flavones, flavanols and anthocyanins (Salas et al 2011). These compounds are reported to have antimicrobial activities (Cushnie and Lamb 2005).…”

Section: Resultsmentioning

confidence: 99%

Citrus peel extract incorporated ice cubes to protect the quality of common pandora

et al. 2015

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The objective of this study was to investigate the effects of ice with albedo and flavedo fragments of Citrus (Grapefruit (Citrus paradisi) and Bitter orange (Citrus aurantium L.)) extracts on the quality of common pandora (Pagellus erythrinus). Concentrated citrus extracts were diluted with distilled water (1/100w/v) before making of ice. The ice cubes were spread on each layer of fishes and stored at 0°C for 15 days. The pH value showed a regular increase in all samples. TVB-N levels of bitter orange treatment groups were recorded lower than the other groups reaching to 25.11± 0.02 mg/100 g at the end of the storage. The TMA-N values of bitter orange treatment groups were lower than that of control and grapefruit treatment groups. In terms of TBARS value, alteration was observed in the control samples and this value significantly (p<0.01) increased from 0.101±0.011 mg MA/ kg to 0.495±0.083 mg MA/kg, while remained lower in the citrus extracts treatment groups at the end of storage since their antioxidant capacity. The oxidation was suppressed in citrus extracts treatment groups, especially in bitter orange flavedo treatment. The results showed the bitter orange albedo and bitter orange flavedo extracts in combination with ice storage have more effectiveness in controlling the biochemical indices in common pandora.

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Section: Resultsmentioning

confidence: 99%

Citrus peel extract incorporated ice cubes to protect the quality of common pandora

et al. 2015

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“…Ortuño et al (2006), evidenciaron algunas modificaciones en hifas de Penicillium digitatum y la inhibición en la producción de esporas causada por neohesperidina y naringenina. Por otro lado, Salas et al (2011) mostraron un efecto sinérgico de la mezcla de flavonoides cítricos, sin embargo, los autores concluyen que los mecanismos comunes que reducen el crecimiento del micelio todavía no están claros. Comportamientos semejantes se apreciaron en este estudio, ya que en ocasiones un mismo extracto mostró efectos diferenciales sobre los hongos A. niger y R. oryzae, observándose mayor efecto sobre A. niger en relación con la esporulación y el crecimiento micelial.…”

Section: Discussionunclassified

Actividad antimicrobiana de cáscaras y semillas de <i>Citrus limonia</i> y <i>Citrus sinensis</i>

et al. 2017

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ResumenSe evaluó la actividad antimicrobiana de extractos etanólicos y fracciones en n-hexano, acetato de etilo, diclorometano y agua-etanol obtenidos a partir de semillas y cáscaras de Citrus sinensis y Citrus limonia, sobre los fitopatógenos Aspergillus niger, Botrytis cinerea, Phytophthora cinnamoni y Rhizopus oryzae. El efecto inhibitorio de los diferentes extractos se midió sobre el crecimiento micelial, la esporulación y sobre los daños en la micromorfología de los microorganismos por los métodos densidad óptica y difusión en agar; los extractos fueron caracterizados por cromatografía de capa delgada, verificándose la presencia de metabolitos secundarios de tipo flavonoide, alcaloide y limonoide. Se presentó un comportamiento diferencial en cuanto a la actividad antimicrobiana de los diferentes tratamientos siendo los más activos los diclorometánicos de las cáscaras, y en este orden con mayor actividad en la fracción diclorometánica de C. limonia. Se observó efecto inhibitorio sobre los microorganismos, el cual fue dependiente de la concentración, apreciándose daños micromorfológicos sobre hifas y estructuras reproductivas, como esporangios y conidios a concentraciones cercanas a los 7 mg/ml. Los resultados sugieren que residuos de la agroindustria de cítricos como las cáscaras son fuente de metabolitos, con potencial antimicrobiano en el control de fitopatógenos de importancia agrícola.Palabras clave: bio-plaguicidas, metabolitos secundarios, microorganismos fitopatógenos, residuos cítricos AbstractThe antimicrobial activity of ethanol extracts and fractions in n-hexane, ethyl acetate, dichloromethane, and water-ethanol obtained from seeds and peels of Citrus limonia and Citrus sinensis, against Aspergillus niger, Botrytis cinerea, Phytophthora cinnamoni, and Rhizopus oryzae was evaluated. The inhibitory effect of various extracts was measured on mycelial growth, sporulation, and damage on microscopic morphology of microorganisms by the following methods: optical density and agar diffusion, determining the inhibitory effect on mycelial growth, sporulation, and microscopic morphology of plant pathogens; the extracts were characterized by thin layer chromatography, verifying the presence of secondary metabolites of flavonoid type, alkaloid, and limonoids. A differential behavior arises in the antimicrobial activity of different treatments, being the most active dichloromethane shells extracts, and in this order with increased activity in the dichloromethane fraction of C. limonia. The inhibitory effect on the microorganisms tested was observed at concentrations close to 7 mg/ml, the result of micromorphological damage on hyphae and reproductive structures such as sporangia and conidia, which were dependent on the extracts concentration. The results suggest that residues as agribusiness citrus peels are a source of metabolites with antimicrobial potential in controlling agriculturally important plant pathogens.

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“…In addition, Psidium guajava has phenolic, lavonoid, carotenoid, terpenoid and triterpenes that demonstrated strong antimicrobial activity [30]. Salas et al [31] reported that lavonoids extracted from citrus species, not only naringin, hesperidin and neohesperidin but also enzymatically modiied derivatives of these compounds, have strong antifungal activity [31]. The limonoid compounds have important antibacterial and antiviral activity as shown in Table 1 [1].…”

Section: Name Plantmentioning

confidence: 99%

Phytochemicals in Fruits and Vegetables

Öz¹,

Kafkas²

2017

Superfood and Functional Food - An Overview of Their Processing and Utilization

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Fruits and vegetables are the most important sources of phytochemicals. Phytochemicals use for both human diets and natural antimicrobial agents in food preservation. Their beneits for health are mainly due to high antioxidant activity. Antimicrobials of plant origin are known as secondary metabolites that could play a role not only individually or jointly against food-borne pathogens but also contribute to food lavor. Phytochemicals have a strong efect on control and prevention of natural spoilage processes and growth of microorganisms, including pathogens causing food safety issues. Microorganisms are always associated with harvested plants and slaughtered animals, the basic unprocessed materials of the food industry. Since foods consumed by humans undergo several processing treatments, it is important to understand the efect of such treatments on the phytochemical composition of foods.

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Antifungal activity of natural and enzymatically-modified flavonoids isolated from citrus species

Cited by 125 publications

References 25 publications

Citrus peel extract incorporated ice cubes to protect the quality of common pandora

Citrus peel extract incorporated ice cubes to protect the quality of common pandora

Actividad antimicrobiana de cáscaras y semillas de <i>Citrus limonia</i> y <i>Citrus sinensis</i>

Phytochemicals in Fruits and Vegetables

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