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Suhong Li
Shenyang Normal University
10Publications
7H-index
179Citations
Publications 10
Newest
#1Tuoping Li (Liaoning University)H-Index: 9
#2Suhong Li (SYNU: Shenyang Normal University)H-Index: 7
Last.Yonghui Liu (Liaoning University)H-Index: 4
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Abstract To expand application of hawthorn ( Crataegus pinnatifida Bge) fruit, the antioxidant and anti-lipidemic effects of haw pectin penta-oligogalacturonide (HPPS) prepared from hawthorn fruit were investigated in vitro and in mice. HPPS exhibited concentration-dependent scavenging activities against superoxide anion, hydroxyl and DPPH radicals. Additionally, HPPS supplementation significantly enhanced the antioxidant enzyme activities of superoxide dismutase, catalase, glutathione peroxidas...
#1Tuoping LiH-Index: 9
#2Yonghui LiuH-Index: 4
Last.Rugang ZhuH-Index: 7
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Pectin and its acidic oligosaccharide derivatives are believed to have many potential applications in the food and pharmaceutical industries. In this article, we have investigated the effects of haw pectic oligosaccharide (HPOS) on hyperlipidemia (HL) and oxidative stress in mice induced by a high-fat diet. The results showed that HPOS significantly suppressed the fat deposition in the liver of HL mice. In addition, it significantly increased superoxide dismutase activity and suppressed the prod...
#1Rugang Zhu (Liaoning University)H-Index: 7
#2Tuoping Li (Liaoning University)H-Index: 9
Last.Youfeng Jia (Liaoning University)H-Index: 3
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Abstract The effects of haw pectin pentasaccharide (HPPS) on hypercholesterolemia were investigated in high-fat fed mice. HPPS significantly decreased the levels of serum total cholesterol (TC) and low density lipoprotein cholesterol (LDL-c), and hepatic TC. It also significantly decreased the activities and gene expressions of 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGCR) and acyl-coenzyme A: cholesterol acyl-transferase (ACAT) in the liver. While, the serum high density lipoprotein cholest...
The regulatory effects of haw pectin pentaoligosaccharide (HPPS) on fatty acid oxidation-related enzyme activities and mRNA levels were investigated in the liver of high fat diet induced hyperlipidemic mice. Results showed that HPPS (150 mg/kg for 10 weeks) significantly suppresses weight gain (32.3 ± 0.26 and 21.1 ± 0.14 g for high-fat diet and HPPS groups, respectively), decreases serum triacylglycerol levels (1.64 ± 0.09 and 0.91 ± 0.02 mmol/L, respectively), and increases lipid excretion in ...
#1Suhong Li (SYNU: Shenyang Normal University)H-Index: 7
#2Tuoping Li (Liaoning University)H-Index: 9
Last.Mei Guo (Tianjin Agricultural University)H-Index: 5
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Haw pectic oligosaccharides, lactic acid, sodium lactate, and tea polyphenol showed dose and pH dependent antibacterial activity against E. coli. The activity of haw pectic oligosaccharides could be enhanced by combination with lactic acid, sodium lactate, or tea polyphenol. However, combination of haw pectic oligosaccharides with nisin resulted in no significant enhancement of antibacterial activity against E. coli. These results revealed that haw pectic oligosaccharides is valuable as a food p...
#1Suhong Li (SYNU: Shenyang Normal University)H-Index: 7
#2Tuoping Li (Liaoning University)H-Index: 9
Last.Mei GuoH-Index: 5
view all 7 authors...
Although haw pectin and its hydrolysates are believed to have various functions in food industries, correlation of the structure with the functionality of oligomers has not yet been clarified. In the present study, haw pectin oligosaccharides were fractionated, and their structural characterizations were analyzed. The results showed that ultrafiltered haw pectin hydrolysates yielded 11 fractions (F1~F11) on a DEAE-Sephadex A-25 column chromatograph. One fraction (F1) was galacturonic acid, where...
#1Tuoping Li (Liaoning University)H-Index: 9
#2Suhong Li (SYNU: Shenyang Normal University)H-Index: 7
Last.Huili Zhang (Liaoning University)H-Index: 1
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The anti-hyperlipidemic and antioxidant effects of haw pectic oligosaccharide (HPOS) were investigated using a model of hyperlipidemia induced by a high-fat diet in mice. HPOS significantly lowered the serum levels of total cholesterol (p < 0.01) and triglycerides (p < 0.05) and inhibited the accumulation of body fat in this model. It significantly enhanced the activity of superoxide dismutase to suppress oxidative reactions (p < 0.01) and inhibited the synthesis and accumulation of malondialdeh...
#1Tuoping LiH-Index: 9
#2Suhong Li (SYNU: Shenyang Normal University)H-Index: 7
Last.Lirui TainH-Index: 1
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Pectinase was immobilized on an activated agar-gel support by multipoint attachment. The maximal activity of immobilized pectinase was obtained at 5 °C, pH 3.6, with a 24 h reaction time at an enzyme dose of 0.52 mg protein/g gel, and the gel was activated with 1.0 M glycidol. These conditions increased the thermal stability of the immobilized pectinase 19-fold compared with the free enzyme at 65 °C. The optimal temperature for pectinase activity changed from 40 to 50 °C after immobilization; ho...
#1Tuoping LiH-Index: 9
#2Suhong Li (SYNU: Shenyang Normal University)H-Index: 7
Last.Jinfu LiuH-Index: 1
view all 4 authors...
Haw pectin obtained by cold-water extraction displayed higher viscosity than that of commercially available lemon pectin. After hydrolysis using purified polygalacturonase, haw and lemon pectins yielded polygalacturonase-resistant fractions (CP1-1 and LP1-1, respectively) in the high-molecular-weight region. Anion-exchange chromatography of the resistant fractions yielded additional three fractions (Hf1, Hf2, Hf3) for CP1-1 and 2 fractions (Lf1, Lf3) for LP1-1. The acidic fractions Hf3 and Lf3 w...
Pectinase was immobilized onto chitosan support using glutaraldehyde as a coupling agent to obtain high activity and stability of pectinase.x A maximum residual activity of 55% was obtained with 0.4 mg protein/g chitosan (w/w), 5% (v/v) glutaraldehyde, and 4℃ for the crosslinking reaction. The optimal pH and temperature for pectinase activity changed from 3.0 and 40℃ to 3.5 and 50℃, respectively, after immobilization. The immobilized enzyme exhibited higher stability under varying conditions of ...
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