Guiqing Zheng
South China University of Technology
PolysaccharideMonosaccharideHaCaTSulfationDigestionTumor necrosis factor alphaHigh-performance liquid chromatographyChemistryMannoseLuteolinHyperosideFucoseAntioxidant2,2'-Azobis(2-amidinopropane) dihydrochlorideGalactoseCrataegus pinnatifidaMalus doumeriCarbohydrateMacrophageCatechinUrsolic acidChlorogenic acidABAPGlycosylQuercetinChinese hawthornFood scienceMethylationReactive oxygen speciesNitric oxideBiochemistryGel permeation chromatographyBiology
4Publications
4H-index
135Citations
Publications 4
Newest
#1Guiqing Zheng (SCUT: South China University of Technology)H-Index: 4
#2Jie Deng (SCUT: South China University of Technology)H-Index: 1
Last. Lin Zhou (Guangdong Pharmaceutical University)H-Index: 7
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Abstract In order to evaluate the release of phenolics and the changes in antioxidant activities, fruits of Crataegus pinnatifida were subjected to in vitro digestion including simulated oral, gastric, small/large intestine digestion. Results showed that totally 37.41 ± 3.09 and 31.51 ± 2.35 mg GAE/g fruit, DW of phenolics were released for Shanlihong and Dajinxing, respectively, and the phenolics released were mainly flavonoids. Catechin, chlorogenic acid, procyanidine B 2 , epicatechin, paraco...
24 CitationsSource
#1Desheng Ji (SCUT: South China University of Technology)H-Index: 2
#2Lijun You (SCUT: South China University of Technology)H-Index: 31
Last. Chao Li (SCUT: South China University of Technology)H-Index: 25
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Abstract In this study, Sargassum fusiforme polysaccharide was purified using a DEAE-Sepharose fast-flow column to obtain Sargassum fusiforme polysaccharides fraction (SFP-P1). As expected, the SFP-P1 contains mainly carbohydrates (87%) with less than 1% protein. Within the carbohydrate, it contains about 10% sulfate and 18% uronic acids. SFP-P1 consisted of l -fucose (13.17%), galactose (4.28%), glucose (1.95%), xylose (5.50%), and mannose (75.10%) with an average molecular weight of 113 kDa. M...
22 CitationsSource
#1Yinglang Ren (SCUT: South China University of Technology)H-Index: 2
#2Guiqing Zheng (SCUT: South China University of Technology)H-Index: 4
Last. Lin Zhou (SCUT: South China University of Technology)H-Index: 7
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Abstract Polysaccharides from Gracilaria lemaneiformis possess various beneficial bioactive functions, but the immunomodulatory activity remains incompletely known. In the present study, a new low molecular-weight sulfated polysaccharide named as GLP-2 was isolated from G. lemaneiformis. The chemical composition and structural characteristics of GLP-2 were determined by high-performance gel permeation chromatography (HPGPC), gas chromatography (GC), infrared (IR) spectrum, methylation and nuclea...
88 CitationsSource
#1Lingrong Wen (SCUT: South China University of Technology)H-Index: 20
#2Guiqing Zheng (SCUT: South China University of Technology)H-Index: 4
Last. Rui Hai Liu (Cornell University)H-Index: 79
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Abstract The phenolic contents, antioxidant, and antiproliferative activities of Malus doumeri were evaluated. Heyuanxiaoguo variety contained higher level of total phenolics (101.9 mg GAE/g fruit, DW), whereas Xinyishanzha variety exhibited the highest total flavonoids (85.35 mg CE/g fruit, DW), and highest cellular antioxidant and antiproliferative activities. Higher ORAC and PSC values were found in Limushan variety. Chlorogenic acid, phloretin-2′-xyloglucoside and ursolic acid were the predo...
19 CitationsSource