A galacturonic acid-rich polysaccharide from Diospyros kaki peel: Isolation, characterization, rheological properties and antioxidant activities in vitro

Cui, Yanlong; Wang, Ruiling; Cao, Siyue; Ismael, Mohamedelfatieh; Wang, Xin; Lü, Xin

doi:10.1016/j.foodchem.2023.135781

Cited by 15 publications

(4 citation statements)

References 33 publications

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“…The peak at 1090 cm −1 indicates the existence of a pyranose ring in the main chain [ 25 ]. The characteristic absorption at 1020 cm −1 might represent an α-1,6 linkage [ 30 , 31 ]. The three AOPs by FT-IR analysis demonstrated the typical absorption peaks of polysaccharides.…”

Section: Resultsmentioning

confidence: 99%

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Physicochemical Characterization and Biological Properties of Polysaccharides from Alpiniae oxyphyllae Fructus

Wang,

Ruan,

Chen

et al. 2024

Polymers

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Polysaccharides (AOPs) were extracted from Alpiniae oxyphyllae fructus using three distinct methods: hot water (AOP-HW), hydrochloric acid (AOP-AC), and NaOH/NaBH4 (AOP-AL). This study systematically investigated and compared the physicochemical properties, structural characteristics, antioxidant activities, and α-amylase inhibitory activities of the extracted polysaccharides. Among the three AOPs, AOP-AC exhibited the highest yield (13.76%) and neutral sugar content (80.57%), but had the lowest molecular weight (121.28 kDa). Conversely, AOP-HW had the lowest yield (4.54%) but the highest molecular weight (385.42 kDa). AOP-AL was predominantly composed of arabinose (28.42 mol%), galacturonic acid (17.61 mol%), and galactose (17.09 mol%), while glucose was the major sugar in both AOP-HW (52.31 mol%) and AOP-AC (94.77 mol%). Functionally, AOP-AL demonstrated superior scavenging activities against DPPH, hydroxyl, and ABTS radicals, whereas AOP-AC exhibited the strongest inhibitory effect on α-amylase. These findings indicate that the extraction solvent significantly influences the physicochemical and biological properties of AOPs, thus guiding the selection of appropriate extraction methods for specific applications. The results of this study have broad implications for industries seeking natural polysaccharides with antioxidant and enzymatic inhibitory properties.

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Section: Resultsmentioning

confidence: 99%

“…The ABTS radical scavenging activity was measured in accordance with the procedures outlined in the literature [ 31 ] with certain adjustments. Initially, the ABTS stock solution was formulated following the documented protocol and subsequently diluted using phosphate buffer (pH 7.0) to achieve an absorbance of 0.700 ± 0.030 at 734 nm.…”

Section: Methodsmentioning

confidence: 99%

Physicochemical Characterization and Biological Properties of Polysaccharides from Alpiniae oxyphyllae Fructus

Wang,

Ruan,

Chen

et al. 2024

Polymers

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Section: Effect Of Structural Modifications On the Biological Activit...mentioning

confidence: 99%

“…Hazardous byproducts are produced during biological metabolism, and excessive free radicals will age the body more quickly, increase the risk of cancer, and damage the liver. 76 Polysaccharides, as oxidation inhibitors, can help the body remove excess free radicals. Based on natural polysaccharides, studies have demonstrated that modifying polysaccharides through physical, chemical, and biological methods can increase their antioxidant activity.…”

Section: Effect Of Structural Modifications On the Biological Activit...mentioning

confidence: 99%

Structurally Modified Polysaccharides: Physicochemical Properties, Biological Activities, Structure–Activity Relationship, and Applications

Chen,

Zhang,

Chen

2024

J. Agric. Food Chem.

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Polysaccharides are an important class of biomolecules derived from several sources. However, the inherent structure of polysaccharides prevents them from exhibiting favorable physicochemical properties, which restricts their development in agriculture, industry, food, and biomedicine. This paper systematically summarizes the changes in the primary and advanced structures of modified polysaccharides, and focuses on the effects of various modification methods on the hydrophobicity, rheological properties, emulsifying properties, antioxidant activity, hypoglycemic, and hypolipidemic activities of polysaccharides. Then there is a list the applications of modified polysaccharides in treating heavy metal pollutants, purifying water resources, improving beverage stability and bread quality, and precisely delivering the drug. When summarized and reviewed, the information above can shed further light on the relationship between polysaccharide structure and function. Determining the structure–activity relationship provides a scientific basis for the direction of molecular modifications of polysaccharides.

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Diospyros kaki fruit extract produces antiarthritic and antinociceptive effects in rats with complete Freund's adjuvant‐induced arthritis

Forouzanfar,

Mirdoosti,

Akaberi

et al. 2024

Food Science & Nutrition

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Current treatments for rheumatoid arthritis produce untoward effects; thus, considerable effort has been made to recognize effective herbal medicines against the condition. In the present study, the therapeutic effect of Diospyros kaki fruit hydroalcoholic extract (DFHE) on complete Freund's adjuvant (CFA)‐induced arthritis in rats was investigated. The extract was characterized using liquid chromatography–electrospray mass spectrometry (LC‐ESIMS). Male Wistar rats were grouped as follows (eight rats in each): control, CFA, CFA + indomethacin (5 mg/kg), CFA + DFHE (50 mg/kg), and CFA + DFHE (100 mg/kg). Paw volume, mechanical allodynia, thermal hyperalgesia, and arthritis score were evaluated. Serum levels of malondialdehyde (MDA), thiol groups, tumor necrosis factor‐alpha (TNF‐α), as well as glutathione peroxidase (GPx) and superoxide dismutase (SOD) activities were evaluated. Carotenoids were found to be the major components of DFHE. Administration of DFHE (100 mg/kg) significantly decreased arthritis score, paw volume, and thermal hyperalgesia, and improved mechanical allodynia. MDA and TNF‐α levels were decreased while thiol levels and SOD and GPx activities were increased in DFHE‐treated groups compared to the CFA group. These results suggest that D. kaki extract caused an improvement in clinical signs of rheumatoid arthritis symptoms possibly through suppression of oxidative stress and inflammation.

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A galacturonic acid-rich polysaccharide from Diospyros kaki peel: Isolation, characterization, rheological properties and antioxidant activities in vitro

Cited by 15 publications

References 33 publications

Physicochemical Characterization and Biological Properties of Polysaccharides from Alpiniae oxyphyllae Fructus

Physicochemical Characterization and Biological Properties of Polysaccharides from Alpiniae oxyphyllae Fructus

Structurally Modified Polysaccharides: Physicochemical Properties, Biological Activities, Structure–Activity Relationship, and Applications

Diospyros kaki fruit extract produces antiarthritic and antinociceptive effects in rats with complete Freund's adjuvant‐induced arthritis

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