Structure, rheological, thermal and antioxidant properties of cell wall polysaccharides from Chinese quince fruits

Qin, Zhao; Liu, Hua‐Min; Lv, Ting‐Ting; Wang, Xuede

doi:10.1016/j.ijbiomac.2019.10.083

Cited by 72 publications

(23 citation statements)

References 56 publications

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“…These include pectins of sunflower head [ 30 ], stems of Equisetum sp. [ 12 ], grapefruits [ 31 ], cladodes of Opuntia ficus indica [ 32 ], riang pod [ 26 ] and Chinese quince fruits [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Isolation, Chemical Characterization and Antioxidant Activity of Pectic Polysaccharides of Fireweed (Epilobium angustifolium L.)

Popov¹,

Смирнов²,

Kvashninova³

et al. 2021

Molecules

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The aim of this study was to isolate pectins with antioxidant activity from the leaves of Epilobium angustifolium L. Two pectins, EA-4.0 and EA-0.8, with galacturonic acid contents of 88 and 91% were isolated from the leaves of E. angustifolium L. by the treatment of plant raw materials with aqueous hydrochloric acid at pH 4.0 and 0.8, respectively. EA-4.0 and EA-0.8 were found to scavenge the DPPH radical in a concentration-dependent manner at 17–133 μg/mL, whereas commercial apple pectin scavenged at 0.5–2 mg/mL. The antioxidant activity of EA-4.0 was the highest and exceeded the activity of EA-0.8 and a commercial apple pectin by 2 and 39 times (IC50—0.050, 0.109 and 1.961 mg/mL), respectively. Pectins EA-4.0 and EA-0.8 were found to possess superoxide radical scavenging activity, with IC50s equal to 0.27 and 0.97 mg/mL, respectively. Correlation analysis of the composition and activity of 32 polysaccharide fractions obtained by enzyme hydrolysis and anionic exchange chromatography revealed that the antioxidant capacity of fireweed pectins is mainly due to phenolics and is partially associated with xylogalacturonan chains. The data obtained demonstrate that pectic polysaccharides appeared to be bioactive components of fireweed leaves with high antioxidant activity, which depend on pH at their extraction.

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Section: Resultsmentioning

confidence: 99%

Isolation, Chemical Characterization and Antioxidant Activity of Pectic Polysaccharides of Fireweed (Epilobium angustifolium L.)

Popov¹,

Смирнов²,

Kvashninova³

et al. 2021

Molecules

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“…As shown in Figure 4 , the DHPs-1 was characterized by one peak at 87.6°C corresponding to the glass transition temperature. One exothermic peak at 200–350°C was detected, which might be attributed to the chemical decomposition of DHPs-1 ( 27 ). Taking into consideration of TG, DTG, and DSC curves, DHPs-1 was relatively stable below 300°C.…”

Section: Resultsmentioning

confidence: 99%

Structure and Bioactivities of a Novel Polysaccharide Extracted From Dendrobium huoshanense by Subcritical Water

et al. 2022

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In this study, the polysaccharide was extracted by subcritical water from Dendrobium huoshanense. A novel polysaccharide (DHPs-1) was obtained through several purification steps and its structure and bioactivity were investigated. Structural analysis indicated that the weight-average molecular weight of DHPs-1 was 5.0 × 104 Da and it was mainly composed of glucose (65.04%), mannose (14.23%), galactose (8.17%), galacturonic acid (6.41%), rhamnose (2.34%), and xylose (1.25%). 1,4-Glcp, and 1,4,6-Galp were existed in the backbone of DHPs-1. The residues of 1,3,4-Galp, 1,4-Manp, 1,4-Galp, and 1,3,4,6-Galp could be in the backbone or the side chains with the non-reducing terminal of α-Manp. Bioactivity tests indicated that DHPs-1 had immunomodulatory activity in that it significantly enhanced transcript levels of cytokines [Tumor necrosis factor-α (TNF-α), Interleukin-6 (IL-6), Interleukin-1β (IL-1β), and Interleukin-10 (IL-10)]. DPPH and hydroxyl radical scavenging tests showed that it had good antioxidant activity. These results reveal that DHPs-1 could be developed as a safe immunomodulatory agent and antioxidant for pharmacological or functional food applications.

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“…The apparent absorption peaks were located at 1590–1630 cm −1 and 1410–1420 cm −1 ; one of the five purified polysaccharides was attributed to the antisymmetric C = O stretching vibration and symmetric C = O stretching vibration of ionic carboxyl ( 30 , 32 , 33 ). The absorption band in the range of 1,000–1,200 cm −1 belonged to the C-O-C and O-C-O tensile vibration of glycosidic bonds and rings in polysaccharides or the C-O-H tensile vibration of side groups, in which two/three absorption bands appeared in PAP3 and PAP4, but only one absorption band exists in PAP1a, PAP1b, and PAP2 ( 7 , 34 ). The absorption peak was located at 835.1 cm −1 and appeared in PAP1a, indicating the presence of the areca polysaccharide α-type glycosidic bond ( 35 , 36 ).…”

Section: Resultsmentioning

confidence: 99%

Structural Elucidation and Antioxidant Activities of a Neutral Polysaccharide From Arecanut (Areca catechu L.)

Guo

Pan³

et al. 2022

Front. Nutr.

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A novel neutral polysaccharide designated as PAP1b was isolated from Areca catechu L. by hot water extraction, ethanol precipitation, and column chromatography. PAP1b was mainly composed of mannose, galactose, xylose, and arabinose in a ratio of 4.1:3.3:0.9:1.7, with an average molecular weight of 37.3 kDa. Structural characterization indicated that the backbone of PAP1b appeared to be composed mainly of → 6-β-Manp-(1 →, → 4)-α-Galp-(1 → and → 3,6)-β-Manp-(1 →) residues with some branches, and terminal of (1 →)-linked-β-Manp residues. The results of bioactivity experiments showed that PAP1b had antioxidant in vitro, esspecially on scavenging DPPH and hydroxyl radicals. Therefore, the polysaccharide from Areca catechu L. could be used as a potential antioxidant in functional food.

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Structure, rheological, thermal and antioxidant properties of cell wall polysaccharides from Chinese quince fruits

Cited by 72 publications

References 56 publications

Isolation, Chemical Characterization and Antioxidant Activity of Pectic Polysaccharides of Fireweed (Epilobium angustifolium L.)

Isolation, Chemical Characterization and Antioxidant Activity of Pectic Polysaccharides of Fireweed (Epilobium angustifolium L.)

Structure and Bioactivities of a Novel Polysaccharide Extracted From Dendrobium huoshanense by Subcritical Water

Structural Elucidation and Antioxidant Activities of a Neutral Polysaccharide From Arecanut (Areca catechu L.)

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