Xin Liu
Organic chemistryChemistryApostichopus japonicusFungusBiochemistry
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Publications 14
#1Peipei Yin (Qilu University of Technology)
#2Airong Jia (Qilu University of Technology)H-Index: 6
Last. Changheng Liu (Qilu University of Technology)H-Index: 1
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Abstract Hot water pretreatment of sea cucumbers potentially changes nutritional benefits. This study aimed to quantify hot water pretreatment-induced changes in metabolite profiles of sea cucumber body walls. ICP-OES, GC-MS, and LC-MS analyses of untreated- (UT-BW), hot water-treated body walls (HW-BW) of Apostichopus japonicus, and the hot water extract (HW-E) determined significant losses of minerals (25-50% w/w), protein (∼11% w/w), carbohydrate (33% w/w), saponins (∼41% w/w), and spermidine...
#1Xin LiuH-Index: 7
#2Jifa Zhang (Southern Medical University)
Last. Zhenliang Sun (Southern Medical University)H-Index: 8
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AbstractPhytochemical investigation of the 1-butanol soluble fraction of 60% ethanol extract of the seeds of Celosia cristata L. led to the identification of three new oleanane-type triterpenoid saponins. Using 1D and 2D NMR experiment methods, ESI-MS analysis and acid hydrolysis, their structures were identified as 3-O-[β-D-xylopyranosyl-(1 → 3)-β-D-glucuronopyranosyl]-2β-hydroxy-oleanolic acid-28-O-β-D-glucopyranoside (1), 3-O-[β-D-xylopyranosyl-(1 → 3)-β-D-glucuronopyranosyl]-2β, 23-dihydroxy...
#1Xin LiuH-Index: 7
#2Miansong ZhangH-Index: 6
Last. Zhenliang Sun (Southern Medical University)H-Index: 8
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BACKGROUND Angiotensin I converting enzyme (ACE) plays an important role in regulating blood pressure in the human body. ACE inhibitory peptides derived from food proteins could exert antihypertensive effects without side effects. Jellyfish (Rhopilema esculentum) is an important fishery resource suitable for production of ACE inhibitory peptides. The objective of this study was to optimize the hydrolysis conditions for production of protein hydrolysate from R. esculentum (RPH) with ACE inhibitor...
5 CitationsSource
Abstract Cellulase-assisted extraction of polysaccharides from Polygonatum odoratum (CPP) was optimized by response surface methodology (RSM) and the extracted CPP's preliminary chemical characteristics, as well as antioxidant and immunomodulatory activities were also investigated. The optimal extraction parameters comprised an extraction temperature of 58.21 °C, an extraction time of 3.18 h, pH value of 5.8, and cellulase amount of 6.0%. Under these conditions, the relative yield was 15.76%, hi...
21 CitationsSource
#1Xuekui Xia (Yeungnam University)H-Index: 1
#2Xin LiuH-Index: 7
Last. Sanghee Shim (Yeungnam University)H-Index: 1
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1 CitationsSource
This study describes the extraction, preliminary characterization and evaluation of the in vitro antitumor and antioxidant activities of polysaccharides extracted from Mentha piperita (MPP). The optimal parameters for the extraction of MPP were obtained by Box-Behnken experimental design and response surface methodology (RSM) at the ratio of water to raw material of 20, extraction time of 1.5 h and extraction temperature at 80 °C. Chemical composition analysis showed that MPP was mainly composed...
15 CitationsSource
#1Xin LiuH-Index: 7
#2Miansong ZhangH-Index: 6
Last. Changheng LiuH-Index: 8
view all 8 authors...
Abstract Two angiotensin I converting enzyme (ACE) inhibitory peptides were isolated from jellyfish Rhopilema esculentum protein hydrolysates prepared with pepsin and papain. Consecutive purification methods, including ion-exchange chromatography, size-exclusion chromatography and reverse-phase high-performance liquid chromatography, were used for isolation of ACE inhibitory peptides. The amino acid sequence of the peptides was identified as Gln-Pro-Gly-Pro-Thr and Gly-Asp-Ile-Gly-Tyr, respectiv...
24 CitationsSource
#1Xin LiuH-Index: 7
#2Zhenliang SunH-Index: 8
Last. Changheng LiuH-Index: 8
view all 8 authors...
Abstract Polysaccharides (AJP) were prepared from Apostichopus japonicus by protease hydrolysis method. Antioxidant activity in vitro and antihyperlipidemic activity in vivo was investigated. Chemical composition analysis indicated that AJP was mainly composed of glucosamine, galactosamine, glucuronic acid, mannose, glucose, galactose and fucose, with an average molecular weight of about 36.2 kDa. The antioxidant capacities of AJP were, respectively, evaluated by the assays of scavenging DPPH, h...
101 CitationsSource
#1Xin LiuH-Index: 7
#2Miansong ZhangH-Index: 6
Last. Changheng LiuH-Index: 8
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Abstract Angiotensin-converting enzyme (ACE) inhibitory, antihypertensive and antihyperlipidaemic activities of protein hydrolysates (RPH) from the jellyfish Rhopilema esculentum were investigated. R. esculentum was hydrolysed sequentially with pepsin and papain, and then the hydrolysate was ultrafiltered with a 2000 Da cut-off membrane. It was found that RPH contained high levels of Gly, Glu, Pro, Asp and Ala, having potential ACE inhibitory activity in vitro with an IC 50 of 1.28 mg/ml. It was...
41 CitationsSource
#1Xuekui XiaH-Index: 11
#2Jianye ZhangH-Index: 5
Last. Yongcheng LinH-Index: 35
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Three new pimarane diterpenes (I)—(III) and a known structurally related compound are isolated from the marine-derived fungus HS-1 associated with a sea cucumber.