Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties

Abstract Pectin is a kind of natural and complex carbohydrates which is extensively used in food, chemical, cosmetic, and pharmaceutical industries. Fresh sunflower (Helianthus annuus L.) heads were utilized as a novel source of pectin extracted by ammonium oxalate. The conditions of the extraction...

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Autores principales:	Xuemei Ma, Jiayi Yu, Jing Jing, Qian Zhao, Liyong Ren, Zhiyong Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3e328627c8534ac3b359750d6d3fe831
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spelling	oai:doaj.org-article:3e328627c8534ac3b359750d6d3fe8312021-12-02T15:45:31ZOptimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties10.1038/s41598-021-89886-x2045-2322https://doaj.org/article/3e328627c8534ac3b359750d6d3fe8312021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89886-xhttps://doaj.org/toc/2045-2322Abstract Pectin is a kind of natural and complex carbohydrates which is extensively used in food, chemical, cosmetic, and pharmaceutical industries. Fresh sunflower (Helianthus annuus L.) heads were utilized as a novel source of pectin extracted by ammonium oxalate. The conditions of the extraction process were optimized implementing the response surface methodology. Under optimal extraction parameters (extraction time 1.34 h, liquid–solid ratio 15:1 mL/g, ammonium oxalate concentration 0.76% (w/v)), the maximum experimental yield was 7.36%. The effect of spray-drying and freeze-drying on the physiochemical properties, structural characteristics, and antioxidant activities was investigated by FT-IR spectroscopy, high performance size exclusion chromatography, and X-ray diffraction. The results showed freeze-drying lead to decrease in galacturonic acid (GalA) content (76.2%), molecular weight (M w 316 kDa), and crystallinity. The antioxidant activities of pectin were investigated utilizing the in-vitro DPPH and ABTS radical-scavenging systems. This study provided a novel and efficient extraction method of sunflower pectin, and confirmed that different drying processes had an effect on the structure and properties of pectin.Xuemei MaJiayi YuJing JingQian ZhaoLiyong RenZhiyong HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xuemei Ma Jiayi Yu Jing Jing Qian Zhao Liyong Ren Zhiyong Hu Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties
description	Abstract Pectin is a kind of natural and complex carbohydrates which is extensively used in food, chemical, cosmetic, and pharmaceutical industries. Fresh sunflower (Helianthus annuus L.) heads were utilized as a novel source of pectin extracted by ammonium oxalate. The conditions of the extraction process were optimized implementing the response surface methodology. Under optimal extraction parameters (extraction time 1.34 h, liquid–solid ratio 15:1 mL/g, ammonium oxalate concentration 0.76% (w/v)), the maximum experimental yield was 7.36%. The effect of spray-drying and freeze-drying on the physiochemical properties, structural characteristics, and antioxidant activities was investigated by FT-IR spectroscopy, high performance size exclusion chromatography, and X-ray diffraction. The results showed freeze-drying lead to decrease in galacturonic acid (GalA) content (76.2%), molecular weight (M w 316 kDa), and crystallinity. The antioxidant activities of pectin were investigated utilizing the in-vitro DPPH and ABTS radical-scavenging systems. This study provided a novel and efficient extraction method of sunflower pectin, and confirmed that different drying processes had an effect on the structure and properties of pectin.
format	article
author	Xuemei Ma Jiayi Yu Jing Jing Qian Zhao Liyong Ren Zhiyong Hu
author_facet	Xuemei Ma Jiayi Yu Jing Jing Qian Zhao Liyong Ren Zhiyong Hu
author_sort	Xuemei Ma
title	Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties
title_short	Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties
title_full	Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties
title_fullStr	Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties
title_full_unstemmed	Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties
title_sort	optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3e328627c8534ac3b359750d6d3fe831
work_keys_str_mv	AT xuemeima optimizationofsunflowerheadpectinextractionbyammoniumoxalateandtheeffectofdryingconditionsonproperties AT jiayiyu optimizationofsunflowerheadpectinextractionbyammoniumoxalateandtheeffectofdryingconditionsonproperties AT jingjing optimizationofsunflowerheadpectinextractionbyammoniumoxalateandtheeffectofdryingconditionsonproperties AT qianzhao optimizationofsunflowerheadpectinextractionbyammoniumoxalateandtheeffectofdryingconditionsonproperties AT liyongren optimizationofsunflowerheadpectinextractionbyammoniumoxalateandtheeffectofdryingconditionsonproperties AT zhiyonghu optimizationofsunflowerheadpectinextractionbyammoniumoxalateandtheeffectofdryingconditionsonproperties
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Optimization of sunflower head pectin extraction by ammonium oxalate and the effect of drying conditions on properties

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