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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Publicado:	2019
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:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v256_n_p28_IdrovoEncalada 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	paper:paper_02608774_v256_n_p28_IdrovoEncalada
record_format	dspace
spelling	paper:paper_02608774_v256_n_p28_IdrovoEncalada2023-06-08T15:22:23Z High-power ultrasound pretreatment for efficient extraction of fractions enriched in pectins and antioxidants from discarded carrots (Daucus carota L.) 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 2019 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v256_n_p28_IdrovoEncalada 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 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
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.)
publishDate	2019
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v256_n_p28_IdrovoEncalada http://hdl.handle.net/20.500.12110/paper_02608774_v256_n_p28_IdrovoEncalada
_version_	1768543750205734912

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

Ejemplares similares