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Abstract:

A useful pectin-enriched fraction (PEF) extracted through high-power-ultrasound (HPUS) pretreatment and sodium carbonate was efficiently obtained from discarded carrots. Formerly, the effect of HPUS-power intensity and time (A: 40 min-2.08 W/cm 2 ; B-E: 5–20 min ≈ 10 W/cm 2 ) on carrot powder (CP) used for PEF-isolation, was investigated. Reducing carbohydrates-, cell-wall neutral sugars- (NS), uronic acids- (UA) of pectins, and protein releases increased with HPUS-energy. CP had antioxidant capacity, containing α- and β-carotene, lutein, α-tocopherol. Only HPUS B-E treatments (≈10 W/cm 2 ) were capable to produce matrix disruption, promoting polymers’ release. CP pretreated through selected E-treatment (20 min; ≈10 W/cm 2 ) followed by 0.1M-Na 2 CO 3 (1 h-stirring) extracted the whole pectin content of CP (UA = 14.0%). PEFs were orange, with co-extracted antioxidants. More substituted (1.27 NS/UA ratio) three lower molecular weights’ components of HPUS-PEF produced higher Newtonian viscosity before shear-thinning, and calcium-crosslinked gels with lower elastic modulus (G’ = 12Pa). Sustainable HPUS/Na 2 CO 3 method isolated efficiently an antioxidants-carrying PEF useful as functional food additive. © 2019 Elsevier Ltd

Registro:

Documento: Artículo
Título:High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)
Autor:Idrovo Encalada, A.M.; Pérez, C.D.; Calderón, P.A.; Zukowski, E.; Gerschenson, L.N.; Rojas, A.M.; Fissore, E.N.
Filiación:Departamento de Industrias, ITAPROQ (CONICET-UBA), Facultad de Ciencias Exactas y Naturales, University of Buenos Aires (UBA), Ciudad Universitaria, Buenos Aires, C1428BGA, Argentina
Instituto de Tecnología de Alimentos (ITA), Instituto Nacional de Tecnología Agropecuaria (INTA), CC-77, B1708WAB-Morón, Province of Buenos Aires, Argentina
Fellow and Member of the National Research Council (CONICET), Argentina
Member of the National Research Council (CONICET), Argentina
Fellow of Agencia Nacional de Promoción Científica y Tecnológica, Argentina
Palabras clave:Alpha-tocopherol; Calcium-crosslinked gels; Carotenes; Discarded carrots; Power intensity; Ultrasound-extracted pectin-fraction; Electric sparks; Shear thinning; Sodium Carbonate; Sodium compounds; Ultrasonics; Alpha-tocopherol; Carotenes; Cross-linked gels; Discarded carrots; Power intensity; Antioxidants
Año:2019
Volumen:256
Página de inicio:28
Página de fin:36
DOI: http://dx.doi.org/10.1016/j.jfoodeng.2019.03.007
Título revista:Journal of Food Engineering
Título revista abreviado:J Food Eng
ISSN:02608774
CODEN:JFOED
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_02608774_v256_n_p28_IdrovoEncalada

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Citas:

---------- APA ----------
Idrovo Encalada, A.M., Pérez, C.D., Calderón, P.A., Zukowski, E., Gerschenson, L.N., Rojas, A.M. & Fissore, E.N. (2019) . High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.). Journal of Food Engineering, 256, 28-36.
http://dx.doi.org/10.1016/j.jfoodeng.2019.03.007
---------- CHICAGO ----------
Idrovo Encalada, A.M., Pérez, C.D., Calderón, P.A., Zukowski, E., Gerschenson, L.N., Rojas, A.M., et al. "High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)" . Journal of Food Engineering 256 (2019) : 28-36.
http://dx.doi.org/10.1016/j.jfoodeng.2019.03.007
---------- MLA ----------
Idrovo Encalada, A.M., Pérez, C.D., Calderón, P.A., Zukowski, E., Gerschenson, L.N., Rojas, A.M., et al. "High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)" . Journal of Food Engineering, vol. 256, 2019, pp. 28-36.
http://dx.doi.org/10.1016/j.jfoodeng.2019.03.007
---------- VANCOUVER ----------
Idrovo Encalada, A.M., Pérez, C.D., Calderón, P.A., Zukowski, E., Gerschenson, L.N., Rojas, A.M., et al. High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.). J Food Eng. 2019;256:28-36.
http://dx.doi.org/10.1016/j.jfoodeng.2019.03.007