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Thermal and Antioxidant Properties of Polysaccharides Sequentially Extracted from Mulberry Leaves (Morus alba L.)

Molecules (Basel, Switzerland), 2017-12, Vol.22 (12), p.2271 [Peer Reviewed Journal]

Copyright MDPI AG 2017 ;2017 by the authors. 2017 ;ISSN: 1420-3049 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules22122271 ;PMID: 29261150

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Title:
Thermal and Antioxidant Properties of Polysaccharides Sequentially Extracted from Mulberry Leaves (Morus alba L.)
Author: Liao, Bu-Yan ; Zhu, Dan-Ye ; Thakur, Kiran ; Li, Ling ; Zhang, Jian-Guo ; Wei, Zhao-Jun
Subjects: antioxidant activities ; Antioxidants ; Antioxidants - chemistry ; Antioxidants - isolation & purification ; Arabinose ; Chelation ; Dilution ; Endothermic reactions ; Enthalpy ; Food industry ; Food production ; Free Radical Scavengers - chemistry ; Fruit - chemistry ; Galactose ; Humans ; Hydroxyl Radical - chemistry ; Hydroxyl radicals ; Iron ; Iron - chemistry ; Iron Chelating Agents - chemistry ; Leaves ; Monosaccharides - chemistry ; Morus - chemistry ; mulberry leaves ; Plant extracts ; Plant Extracts - chemistry ; Plant Extracts - isolation & purification ; Plant Leaves - chemistry ; Polysaccharides ; Polysaccharides - chemistry ; Polysaccharides - isolation & purification ; Saccharides ; Scavenging ; sequential extraction ; Sugar ; Sugars ; Temperature ; thermal properties ; Thermodynamics
Is Part Of: Molecules (Basel, Switzerland), 2017-12, Vol.22 (12), p.2271
Description: Polysaccharides from natural plant products are gaining considerable attention due to their multi-faceted health effects, as well their functional applications in food production. We reported the sequential extraction of mulberry leaf polysaccharides (MLPs) with hot buffer (HBSS), chelating agent (CHSS), dilute alkali (DASS) and concentrated alkali (CASS), in order to obtain polysaccharide fractions. Monosaccharide analysis proved that galactose (27.07%) and arabinose (25.99%) were the major sugars in HBSS, whereas arabinose (30.55%) was the major sugar in CHSS, and glucose was the major sugar in DASS (24.96%) and CASS (27.51%). The molecular weights of the polysaccharide fractions were 7.812 × 10³ (HBSS), 3.279 × 10³ (CHSS), 6.912 × 10³ (DASS), and 1.408 × 10³ kDa (CASS). HBSS and CASS showed the largest peak temperature and the highest endothermic enthalpy, respectively. Different antioxidant assays showed that the MLPs possessed appreciable antioxidant activities in a dose-dependent manner. At 5 mg/mL, HBSS and DASS possessed the largest 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) radical scavenging activity (96.82%). HBSS exhibited the highest reducing power, and DASS rendered the strongest ABTS radical scavenging activity (99.69%). CHSS performed the best hydroxyl radical scavenging activity (64.22%) and Fe -chelating ability (96.36%). Our results suggested that MLPs could be a promising source of natural antioxidants for use in the food, pharmaceutical, and cosmetic industries.
Publisher: Switzerland: MDPI AG
Language: English
Identifier: ISSN: 1420-3049
EISSN: 1420-3049
DOI: 10.3390/molecules22122271
PMID: 29261150
Source: Geneva Foundation Free Medical Journals at publisher websites
MEDLINE
PubMed Central
Alma/SFX Local Collection
ProQuest Central
DOAJ Directory of Open Access Journals

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Thermal and Antioxidant Properties of Polysaccharides Sequentially Extracted from Mulberry Leaves (Morus alba L.)

Copyright MDPI AG 2017 ;2017 by the authors. 2017 ;ISSN: 1420-3049 ;EISSN: 1420-3049 ;DOI: 10.3390/molecules22122271 ;PMID: 29261150

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