Rheological properties of polysaccharides from Dioscorea opposita Thunb.

Ma, Fuqiu; Zhang, Yun; Liu, Nanhua; Zhang, Jie; Tan, Gai-Xiu; Balan, Kannan; Xiu-hua, Liu; Bell, Alan

doi:10.1016/j.foodchem.2017.01.072

Cited by 75 publications

(22 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, if G′ < G″, the solution has prevalently viscous properties, which are observed to be more ‘‘liquid-like”. When G′ > G″, the system will exhibit prevalent elastic properties [11,36,37,38]. Figure 4 presents the viscoelastic behaviors of TSP solutions at different concentrations at a strain of 2%, which is chosen by the linear viscoelastic region checked in Figure S2.…”

Section: Resultsmentioning

confidence: 99%

“…The mechanical loss of the TSP solution during oscillation measurements can be reflected by loss tangent (tan δ = G″/G′), which is a measure of the energy lost compared to energy stored in a cyclic deformation [41]. When tan δ = 1, the same degree of viscous and elastic components can be expected for the systems with typically weak gel properties [37]. As shown in Figure 4b, the system revealed liquid-like properties indicated by an increased tan δ with decreasing TSP concentration.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Composition and Rheological Properties of Polysaccharide Extracted from Tamarind (Tamarindus indica L.) Seed

et al. 2019

View full text Add to dashboard Cite

A polysaccharide was extracted in high yield from tamarind (Tamarindus indica L.) seed (TSP) by acidic hot water extraction and ethanol precipitation. It was composed of 86.2% neutral polysaccharide, 5.4% uronic acid and 1.3% protein. The molecular weight of TSP was estimated to be about 1735 kDa, with glucose, xylose, and galactose in a molar ratio of 2.9:1.8:1.0 as the major monosaccharides. The steady shear and viscoelastic properties of TSP aqueous solutions were investigated by dynamic rheometry. Results revealed that TSP aqueous solution at a concentration above 0.5% (w/v) exhibited non-Newtonian shear-thinning behavior. Dynamic oscillatory analysis revealed that 10% (w/v) TSP showed as a “weak gel” structure. Apparent viscosities and viscoelastic parameters of TSP solutions decreased drastically in an alkaline solution of pH > 10, but slightly influenced by acidic solution, high temperature and the presence of salt ions and sucrose. These results indicated that TSP possessed excellent pH-resistance and thermo-stability, which might be suitable for applications in acidic beverages and high-temperature processed foodstuffs.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Composition and Rheological Properties of Polysaccharide Extracted from Tamarind (Tamarindus indica L.) Seed

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Studies on rheological properties of polysaccharides may provide useful information for their application as potential thickeners and stabilizers in food industry [17,18]. Bao et al [19] reported that water-soluble polysaccharides from Auricularia auricular-judae exhibited desirable functional properties including high viscosity with shear-thinning behavior and forming thermal stable gels ability, which were useful for application in food industry.…”

Section: Introductionmentioning

confidence: 99%

“…Bao et al [19] reported that water-soluble polysaccharides from Auricularia auricular-judae exhibited desirable functional properties including high viscosity with shear-thinning behavior and forming thermal stable gels ability, which were useful for application in food industry. Ma et al [17] investigated effects of different concentration, temperature and pH on rheological properties of polysaccharides from Dioscorea opposite Thunb , which contributed to the function and applications of natural thickeners in food industry.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasound Treatment on Extraction and Rheological Properties of Polysaccharides from Auricularia Cornea var. Li.

Wang

Guo

2019

Molecules

View full text Add to dashboard Cite

Auricularia cornea var. Li. is an edible fungi and polysaccharides in Auricularia cornea var. Li. may have bioactive activities. Polysaccharides from Auricularia cornea var. Li. (ACP) was extracted using ultrasound-assisted extraction (UAE) method and compared with hot water extraction (HWE) for extraction yield, extraction rate, purity of polysaccharides, microstructure of residues after extraction, preliminary structure and rheological properties of polysaccharides. Optimum conditions for UAE (particle size of 150–200 mesh, water to raw material ratio of 70:1, extraction temperature at 70 °C for 40 min, ultrasonic amplitude of 40%) and HWE (particle size of 150–200 mesh, water to raw material ratio of 60:1, extraction temperature at 90 °C for 3.0 h) were obtained via single-factor experiment. Under optimum conditions, extraction yield of polysaccharides by UAE was 30.99 ± 1.93% which showed no significant difference with that by HWE (30.35 ± 1.67%) (P > 0.05). Extraction rate (29.29 ± 1.41%) and purity (88.62 ± 2.80%) of polysaccharides by UAE were higher than those by HWE (extraction rate of 24.95 ± 2.78% and purity of 75.33 ± 6.15%) (P < 0.05). Scanning Electron Microscopy (SEM) images of residues by UAE showed more broken cells than those by HWE. Fourier Transform Infrared (FTIR) spectra showed that the dialyzed ACP extracted by HWE and UAE (DACP-HWE and DACP-UAE) had similar characteristic absorption peaks of polysaccharides. Both DACP-HWE and DACP-UAE solutions showed typical shear thinning and temperature-independent behaviors (25–90 °C) and UAE resulted in polysaccharides with remarkably lower viscosity in comparison with HWE. DACP-UAE solutions exhibited more liquid-like state while DACP-HWE solutions solid-like system. Data indicated that ultrasound treatment may be a useful means for extraction of polysaccharides from Auricularia cornea var. Li.

show abstract

“…Dioscorea oppositifolia L. is documented in the "Shennong Bencaojing" and is regarded as a model of the "chemical similarity of medicine and food" principle in ancient China, besides promoting the functions of lungs and kidneys (Ren et al, 2019a). Modern pharmacological research shows that it has the biological activities of lowering blood sugar and blood pressure, as well as the anti-inflammatory and anti-tumour effects (Hsu et al, 2014;Ma et al, 2017;Ren et al, 2019b). However, during the collecting process of D. oppositifolia L., its aerial parts (stems and leaves) are piled up in the field as waste, causing environmental pollution and a waste of resource.…”

Section: Introductionmentioning

confidence: 99%

In vitro Non-Small Cell Lung Cancer Inhibitory Effect by New Diphenylethane Isolated From Stems and Leaves of Dioscorea oppositifolia L. via ERβ-STAT3 Pathway

et al. 2021

View full text Add to dashboard Cite

Lung cancer is the most leading cause of cancer mortality throughout the world, of which about 85% cases comprise the non-small cell lung cancer (NSCLC). Estrogen and estrogen receptors are known to be involved in the pathogenesis and development of lung cancer. Dioscorea oppositifolia L. is a traditional Chinese medicine and a nutritious food, and can be an excellent candidate as an anti-cancer agent owing to its estrogen-like effects. However, the stems and leaves of D. oppositifolia L. are piled up in the field as a waste, causing environmental pollution and waste of resources. In the present study, a new diphenylethane (D1) was isolated from the stems and leaves of D. oppositifolia L. It was observed that D1 reduced the cell viability, migration, energy metabolism, and induced apoptosis in the A549 cells. Mechanistic studies showed that D1 reduced the STAT3 nuclear localization and downregulated the expression of the STAT3 target genes like Mcl-1, Bcl-xL and MMP-2 that are involved in the cell survival and mobility. Moreover, our results indicated that D1 exhibited estrogenic activities mediated by ERβ, and antagonising ERβ decreased the cytotoxic effect of D1 in A549 cells. In addition, inhibition of the nuclear translocation of STAT3 did not interfere with the binding of D1 and ERβ. However, after antagonizing ERβ, the nuclear translocation of STAT3 increased, thereby demonstrating that STAT3 was the downstream signaling molecule of ERβ. In conclusion, the D1 mediated anti-NSCLC in vitro effects or at least in part can be attributed to the ERβ-STAT3 signaling. Our ﬁndings suggest the role of D1 in treating NSCLC on a molecular level, and can help to improve the comprehensive utilization rate of D. oppositifolia L.

show abstract

Rheological properties of polysaccharides from Dioscorea opposita Thunb.

Cited by 75 publications

References 28 publications

Composition and Rheological Properties of Polysaccharide Extracted from Tamarind (Tamarindus indica L.) Seed

Composition and Rheological Properties of Polysaccharide Extracted from Tamarind (Tamarindus indica L.) Seed

Effects of Ultrasound Treatment on Extraction and Rheological Properties of Polysaccharides from Auricularia Cornea var. Li.

In vitro Non-Small Cell Lung Cancer Inhibitory Effect by New Diphenylethane Isolated From Stems and Leaves of Dioscorea oppositifolia L. via ERβ-STAT3 Pathway

Contact Info

Product

Resources

About