High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)

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) u...

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Autores principales:	Idrovo Encalada, A.M., Pérez, C.D., Calderón, P.A., Zukowski, E., Gerschenson, L.N., Rojas, A.M., Fissore, E.N.
Formato:	JOUR
Materias:	Alpha-tocopherol Calcium-crosslinked gels Carotenes Discarded carrots Power intensity Ultrasound-extracted pectin-fraction Electric sparks Shear thinning Sodium Carbonate Sodium compounds Ultrasonics Cross-linked gels Antioxidants
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_02608774_v256_n_p28_IdrovoEncalada
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_02608774_v256_n_p28_IdrovoEncalada
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spelling	todo:paper_02608774_v256_n_p28_IdrovoEncalada2023-10-03T15:12:03Z High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.) Idrovo Encalada, A.M. Pérez, C.D. Calderón, P.A. Zukowski, E. Gerschenson, L.N. Rojas, A.M. Fissore, E.N. 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 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 JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02608774_v256_n_p28_IdrovoEncalada
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Idrovo Encalada, A.M. Pérez, C.D. Calderón, P.A. Zukowski, E. Gerschenson, L.N. Rojas, A.M. Fissore, E.N. High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)
topic_facet	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
description	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
format	JOUR
author	Idrovo Encalada, A.M. Pérez, C.D. Calderón, P.A. Zukowski, E. Gerschenson, L.N. Rojas, A.M. Fissore, E.N.
author_facet	Idrovo Encalada, A.M. Pérez, C.D. Calderón, P.A. Zukowski, E. Gerschenson, L.N. Rojas, A.M. Fissore, E.N.
author_sort	Idrovo Encalada, A.M.
title	High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)
title_short	High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)
title_full	High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)
title_fullStr	High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)
title_full_unstemmed	High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)
title_sort	high-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (daucus carota l.)
url	http://hdl.handle.net/20.500.12110/paper_02608774_v256_n_p28_IdrovoEncalada
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High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.)

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