Structural properties and antioxidant activities of polysaccharides isolated from sunflower meal after oil extraction

Liu, Hua‐Min; Liu, Xiaoyan; Yan, Yuanyuan; Gao, Jing-Hao; Qin, Zhao; Wang, Xuede

doi:10.1016/j.arabjc.2021.103420

Cited by 14 publications

(4 citation statements)

References 41 publications

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“…The heterotopic hydrogen proton signal appeared at 4.90~5.20 ppm, indicating that the ORPs-V was pyranose. Three small high-field signals at 4.43, 4.47, and 4.50 ppm were considered to suggest that there was a β-anomeric configuration in the ORPs-V, which was consistent with the results of the FT-IR analysis [46]. The signals in the region of 2.00~2.40 ppm suggested that some acetyl groups were binding in the ORPs-V, which agreed with both the literature and the FT-IR results (signal peak at 1730 cm −1 ).…”

Section: Nmr Analysissupporting

confidence: 76%

Extraction, Isolation, Screening, and Preliminary Characterization of Polysaccharides with Anti–Oxidant Activities from Oudemansiella raphanipies

et al. 2023

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Response surface methodology (RSM) was used to find the optimal extraction process of Oudemansiella raphanipies polysaccharides (ORPs). The results showed that the optimal extraction parameters were an alkali concentration of 0.02 mol/L, a ratio of material to liquid of 1:112.7 g/mL, an extraction temperature of 66.0 °C, and an extraction time of 4.0 h. Under the optimal conditions, the yield of ORPs was raised to 16.2 ± 0.1%. The antioxidant activities of ORPs–I~V were determined and compared, and ORPs–V was further purified by chromatography, with an average molecular weight (Mw) of 18.86 kDa. The structure of ORPs–V was determined by Fourier transform–infrared spectroscopy (FT–IR), monosaccharide analysis, and nuclear magnetic resonance (NMR) spectroscopy. The ORPs–V comprised fucose, rhamnose, arabinose, glucose, galactose, mannose, xylose, fructose, galacturonic acid, and glucuronic acid at a ratio of 1.73:1.20:1.13:2.87:8.71:2.89:1.42:0.81. Compared to other ORPs, ORPs–V showed the strongest antioxidant activities (ABTS radical cation, hydroxyl radical and DPPH scavenging activities, and reducing power), and were able to significantly increase the activities of superoxide dismutase, catalase, lactate dehydrogenase, and glutathione peroxidase. However, they reduced the malondialdehyde content in mice fed a high-fat diet. These results indicate that ORPs–V may be good anti–oxidant agents to be applied in functional foods.

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Section: Nmr Analysissupporting

confidence: 76%

Extraction, Isolation, Screening, and Preliminary Characterization of Polysaccharides with Anti–Oxidant Activities from Oudemansiella raphanipies

et al. 2023

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“…Increasing evidence has indicated that natural plant polysaccharides possessed superior immunomodulatory effects. Additionally, numerous plant polysaccharides possess obvious oxidation resistances, which can protect the body against free radical damage, and decrease the disease risk [ 17 , 18 ]. The abundant antioxidant capacity of polysaccharides had a clear impact on their effective application as supplements in pharmaceuticals and health foods fields [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Extraction, Structure and Immunoregulatory Activity of Low Molecular Weight Polysaccharide from Dendrobium officinale

et al. 2022

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The ethanol precipitation method has been widely-used for Dendrobium officinale polysaccharides preparation. However, the alcohol-soluble fractions have always been ignored, which causes significant wastes of resources and energies. In this study, the extraction, physicochemical properties, and immune regulation activity of an edible D. officinale polysaccharide (DOPs) isolated from the supernatant after 75% ethanol precipitation were systematically investigated. The structural characteristics determination results showed that DOPs was mainly composed of glucose and mannose at a molar ratio of 1.00:5.78 with an average molecular weight of 4.56 × 103 Da, which was made up of α-(1,3)-Glcp as the main skeleton, and the α-(1,4)-Glcp and β-(1,4)-Manp as the branches. Subsequently, the cyclophosphamide (CTX)-induced immunosuppressive mice model was established, and the results demonstrated that DOPs could dose-dependently protect the immune organs against CTX damage, improve the immune cells activities, and promote the immune-related cytokines (IL-2, IFN-γ and TNF-α) secretions. Furthermore, DOPs treatment also effectively enhanced the antioxidant enzymes levels (SOD, GSH-Px) in sera and livers, therefore weakening the oxidative damage of CTX-treated mice. Considering these above data, DOPs presented great potential to be explored as a natural antioxidant and supplement for functional foods.

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“…The signals in the HSQC NMR spectra were assigned based on earlier studies (Yan et al ., 2019; Liu et al ., 2021). According to the HSQC spectra, the five fractions' monosaccharide and glycosidic linkage conformations varied, as listed in Table 3.…”

Section: Resultsmentioning

confidence: 99%

Physicochemical characteristics and digestive properties of cell wall polysaccharides fractionated from sunflower meal

Xu,

Wu,

Shi

et al. 2023

Int J of Food Sci Tech

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SummaryTo further utilize plant protein in oilseeds, it is vital to understand the structural and digestive characteristics of cell wall polysaccharides fractionated from sunflower meal. Water, chelator (cyclohexane‐trans‐1,2‐diaminetetra‐acetate, CDTA), sodium carbonate, 1 mol/L KOH, and 4 mol/L KOH were used to sequentially extract polysaccharides from sunflower meal, yielding samples that were labeled WSP, CSP, NSP, KS1, and KS4, respectively. Results indicated that galactose (1,6‐β‐D‐Galp) was the major sugar unit in WSP, while arabinose (1,3‐α‐L‐Araf and 1,5‐α‐L‐Araf) was the major sugar in the other four fractions. KS4 showed the highest molecular weight and the lowest thermal stability. The surface of the five polysaccharides was shown to be heterogeneous using SEM and AFM, with KS4 having the highest average size. The molecular weight of the five polysaccharides decreased during simulated digestion in vitro. It was noteworthy that the structures of KS1 and KS4 were harder to destroy than the other three fractions. These two polysaccharides are perhaps what makes sunflower protein difficult to digest, thereby decreasing its nutritional value.

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Structural properties and antioxidant activities of polysaccharides isolated from sunflower meal after oil extraction

Cited by 14 publications

References 41 publications

Extraction, Isolation, Screening, and Preliminary Characterization of Polysaccharides with Anti–Oxidant Activities from Oudemansiella raphanipies

Extraction, Isolation, Screening, and Preliminary Characterization of Polysaccharides with Anti–Oxidant Activities from Oudemansiella raphanipies

Extraction, Structure and Immunoregulatory Activity of Low Molecular Weight Polysaccharide from Dendrobium officinale

Physicochemical characteristics and digestive properties of cell wall polysaccharides fractionated from sunflower meal

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