Proposals for the residues recovery: Orange waste as raw material for new products

Rezzadori, Kátia; Benedetti, Silvia; Amante, Edna Regina

doi:10.1016/j.fbp.2012.06.002

Cited by 205 publications

(122 citation statements)

References 39 publications

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“…80-90%) and has a low pH (3)(4) and inappropriate handling could cause severe damage to the environment [6]. Orange waste also contains pectin, soluble sugars, hemicelluloses, cellulose, starch, protein, lignin, ash, fat, and flavonoids [7,8], which have been shown to be beneficial to many yet imperfect disposal and recovery applications [6]. These compounds on the other hand could be interesting for bioplastics applications.…”

Section: Introductionmentioning

confidence: 99%

Production of Pectin-Cellulose Biofilms: A New Approach for Citrus Waste Recycling

Bátori

Jabbari

Åkesson

et al. 2017

International Journal of Polymer Science

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While citrus waste is abundantly generated, the disposal methods used today remain unsatisfactory: they can be deleterious for ruminants, can cause soil salinity, or are not economically feasible; yet citrus waste consists of various valuable polymers. This paper introduces a novel environmentally safe approach that utilizes citrus waste polymers as a biobased and biodegradable film, for example, for food packaging. Orange waste has been investigated for biofilm production, using the gelling ability of pectin and the strength of cellulosic fibres. A casting method was used to form a film from the previously washed, dried, and milled orange waste. Two film-drying methods, a laboratory oven and an incubator shaker, were compared. FE-SEM images confirmed a smoother film morphology when the incubator shaker was used for drying. The tensile strength of the films was 31.67 ± 4.21 and 34.76 ± 2.64 MPa, respectively, for the oven-dried and incubator-dried films, which is within the range of different commodity plastics. Additionally, biodegradability of the films was confirmed under anaerobic conditions. Films showed an opaque appearance with yellowish colour.

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Section: Introductionmentioning

confidence: 99%

Production of Pectin-Cellulose Biofilms: A New Approach for Citrus Waste Recycling

Bátori

Jabbari

Åkesson

et al. 2017

International Journal of Polymer Science

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“…Solo para el año 2013, Colombia tuvo una producción de cítricos que ascendió a 1.151.121,9 toneladas (Agronet 2016). Se ha señalado que estos residuos contienen metabolitos bioactivos tales como flavonoides, lactonas y triterpenoides con acción fungicida e insecticida (Del Río et al 2004, Macias et al 2005, Rezzadori et al 2012, pudiéndose emplear para la elaboración de extractos con potencial antimicrobiano. Por tal razón, el presente trabajo tuvo como objetivo evaluar la actividad antimicrobiana de extractos etanólicos y fracciones de subproductos de dos especies de cítricos: Citrus sinensis (L) Osbeck.…”

Section: Introductionunclassified

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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“…En la agricultura y producción tradicionales, estos residuos (cáscaras) tienen valor bajo o nulo y aún pueden constituir un problema ambiental debido a su acumulación cerca de las zonas industriales. Los residuos generados han sido tradicionalmente transformados en salvado peletizado para alimento de animales (Rezzadori et al, 2012) Sin embargo, se ha encontrado que las cascaras son la principal fuente de polifenoles en frutas cítricas (PadillaCamberos et al, 2014). Residuos de cáscara de naranjas dulces y amargas, limones y mandarinas han probado ser fuente importante de ácidos fenólicos y flavonoides, principalmente polimetoxiflavonas (PMFs), flavanonas, y flavanonas glicosiladas (Wang et al, 2014;Xi et al, 2014).…”

Section: Introductionunclassified

Flavonoids extracted from orange peelings tangelo (Citrus reticulata x Citrus paradisi) and their application as a natural antioxidant in sacha inchi (Plukenetia volubilis) vegetable oil

DomÃnguez¹

2016

Sc.Agropec

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Proposals for the residues recovery: Orange waste as raw material for new products

Cited by 205 publications

References 39 publications

Production of Pectin-Cellulose Biofilms: A New Approach for Citrus Waste Recycling

Production of Pectin-Cellulose Biofilms: A New Approach for Citrus Waste Recycling

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

Flavonoids extracted from orange peelings tangelo (Citrus reticulata x Citrus paradisi) and their application as a natural antioxidant in sacha inchi (Plukenetia volubilis) vegetable oil

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