Antioxidant activities of polysaccharides from Hyriopsis cumingii

Qiao, Dan; Ke, Chunling; Hu, Bing; Luo, Jianguang; Ye, Hong; Sun, Yi; Yan, Xiaoyan; Zeng, Xiaoxiong

doi:10.1016/j.carbpol.2009.03.018

Cited by 233 publications

(106 citation statements)

References 19 publications

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“…Thus it is necessary to prevent the case happen by introducing antioxidant to inhibit the activity of free radical. Some reports pointed that metal chelate could reduce the concentration of the catalyzing transition metal in lipid peroxidation, which means it plays an important role in antioxidant mechanisms (Qiao et al, 2009). …”

Section: +mentioning

confidence: 99%

Extraction optimization of antioxidant polysaccharides from leaves of Gynura bicolor (Roxb. & Willd.) DC

Yang

Liu

et al. 2014

Food Sci. Technol (Campinas)

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Section: +mentioning

confidence: 99%

Extraction optimization of antioxidant polysaccharides from leaves of Gynura bicolor (Roxb. & Willd.) DC

Yang

Liu

et al. 2014

Food Sci. Technol (Campinas)

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“…The free radical scavenging effects of native and degraded HA were estimated according to the method of Qiao et al (2009). Briefly 1 mL of each sample was mixed with 0.2 mL of methanolic solution of DPPH (400 lM), and then 2.0 mL of water was added.…”

Section: 2-diphenyl-1-picrylhydrazyl (Dpph) Radical Scavenging Assaymentioning

confidence: 99%

Effect of ultrasonic degradation of hyaluronic acid extracted from rooster comb on antioxidant and antiglycation activities

Hafsa

Chaouch

Charfeddine

et al. 2016

Pharmaceutical Biology

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Content:Recently, low-molecular-weight hyaluronic acid (LMWHA) has been reported to have novel features, such as free radical scavenging activities, antioxidant activities and dietary supplements. Objective: In this study, hyaluronic acid (HA) was extracted from rooster comb and LMWHA was obtained by ultrasonic degradation in order to assess their antioxidant and antiglycation activities. Materials and methods: Molecular weight (Mw) and the content of glucuronic acid (GlcA) were used as the index for comparison of the effect of ultrasonic treatment. The effects on the structure were determined by ultraviolet (UV) spectra and Fourier transform infrared spectra (FTIR). The antioxidant activity was determined by three analytical assays (DPPH, NO and TBARS), and the inhibitory effect against glycated-BSA was also assessed. Results: The GlcA content of HA and LMWHA was estimated at about 48.6% and 47.3%, respectively. The results demonstrate that ultrasonic irradiation decreases the Mw (1090-181 kDa) and intrinsic viscosity (1550-473 mL/g), which indicate the cleavage of the glycosidic bonds. The FTIR and UV spectra did not significantly change before and after degradation. The IC 50 value of HA and LWMHA was 1.43, 0.76 and 0.36 mg/mL and 1.20, 0.89 and 0.17 mg/mL toward DPPH, NO and TBARS, respectively. Likewise LMWHA exhibited significant inhibitory effects on the AGEs formation than HA. Discussion and conclusion: The results demonstrated that the ultrasonic irradiation did not damage and change the chemical structure of HA after degradation; furthermore, decreasing Mw and viscosity of LMWHA after degradation may enhance the antioxidant and antiglycation activity.

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“…The peak at 2926.11 cm -1 indicated the weak C-H stretching frequency [28]. The vibration at 1647.26 cm -1 was due to the presence of N-H bonding vibrations of protein content in polysaccharides [29]. Peaks at 1543.1, 1219.05 cm −1 were characteristic of carboxyl groups or carboxylates.…”

Section: Eps Purification and Characterizationmentioning

confidence: 97%

Multidrug resistant pathogenic bacterial biofilm inhibition by Lactobacillus plantarum exopolysaccharide

Pradeepa¹,

Shetty²,

Matthews³

et al. 2016

Bioactive Carbohydrates and Dietary Fibre

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Antioxidant activities of polysaccharides from Hyriopsis cumingii

Cited by 233 publications

References 19 publications

Extraction optimization of antioxidant polysaccharides from leaves of Gynura bicolor (Roxb. & Willd.) DC

Extraction optimization of antioxidant polysaccharides from leaves of Gynura bicolor (Roxb. & Willd.) DC

Effect of ultrasonic degradation of hyaluronic acid extracted from rooster comb on antioxidant and antiglycation activities

Multidrug resistant pathogenic bacterial biofilm inhibition by Lactobacillus plantarum exopolysaccharide

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