Influence of magnetic field on gluten aggregation behavior and quality characteristics of dough enriched with potato pulp.

This study investigated the effect of varying magnetic field intensities (ranging from 0 to 10 mT) on the quality characteristics of dough with 40 % potato pulp substitution (DPP). The results indicated that the DPP fermented with a 4 mT magnetic field exhibited a significant enhancement in the combination of water and substrate, thereby elevating the viscoelastic properties of DPP through reinforcing the stability of gluten network. Meanwhile, DPP treated with a 4 mT magnetic field exhibited the highest amount of disulfide bonds (11.64 µmol SS/g sample). This is accompanied by a prominent cross-linkage structure, as evidenced by SDS-PAGE and CLSM. Notably, the application of a magnetic field substantially augments the dough's capacity to retain gas during fermentation. In addition, the application of magnetic field significantly increased the wet gluten content (20.85 %, P < 0.05) in DPP, which improved tensile properties and an acceptable color profile. The introduction of a magnetic field induces gluten aggregation, which in turn results in heightened particle size distribution and ζ-potential values. In conclusion, this study emphasize the potential of magnetic field technology as a viable method to enhance the overall quality attributes of dough enriched with potato pulp substitution.

[Genistein inhibits the promotive effect of IL-1beta on osteoclastic bone resorption].

OBJECTIVE: To investigate the effect of genistein, a soybean-derived isoflavone, on the stimulating effect on bone resorption of IL-1beta. METHODS: The osteoclasts (OCs) were isolated with the methods of Yu Shifeng. The rat calvaria were cultured as an organ. The cells in the experiment were grown in four respectively: Control (without genistein or IL-1beta), 10(-6) mol/L genistein,10 microg/L IL-1beta and 10(-6)mol/L genisteine + 10 microg/L IL-1beta. The area of bone resorption, the concentration of Ca(2+) in the supernatant liquid of OCs cultures and mice calvaria were tested. The contents of acid phosphatase(ACP) were also examined by biochemistry method. The index of bone resorption was counted as the ratio of the experiment average and control ones, which indicated the increase in bone resorption when it was above 1.0. RESULTS: The area of bone resorption of 10(-6) mol/L genisteine + 10 microg//L IL-1beta increased compared with that of 10(-6) mol/L genistein, while the concentration of Ca(2+) in the supernatant liquid of OCs cultures decreased significantly. The index of bone resorption of 10(-6) mol/L genisteine + 10 microg//L IL-1beta lied between 10(-6) mol/L genistein and 10 mug/L IL-1beta. In the organ culture, there was no difference in the content of ACP among all the groups. The index of bone resorption of 10(-6) mol/L genisteine + 10 microg//L IL-1beta was below that of 10 mug/L IL-1beta, but both were above 1.0. The index of bone resorption was below 1.0 in the group of 10(-6) mol/L genistein. CONCLUSION: Genistein can suppress obviously the bone resorption simulated by single IL-1beta.

In vitro study of the effects of Epimedium on osteoclastic bone resorption in various oral mineralized tissues.

OBJECTIVE: To investigated the bone resorption caused by osteoclasts and modulating functions of a Chinese herb, Epimedium on bone resorption. METHODS: Osteoclasts were separated from long-limb bones of new born rabbits, cultured with de-activated human tooth slices and glass slices, and treated with different concentrations of Epimedium. Osteoclasts on glass slices were stained by HE staining, TUNEL staining and absorption pits on tooth slices were observed by light microscope. RESULTS: HE staining shows that the Epimedium treated cells showed shrinkage of cytosol and condensation of nuclei. Some treated cells showed breakage of nuclei. TUNEL staining shows that treated cells showed shrinkage of cytosol, dark stained nuclei and light stained cytosol. These results indicate that Epimedium can induce osteoclast to commit apoptosis. Further study shows that the number and area of absorption pits formed on treated tissues are significantly different from those on control tissues. So the effect of Epimedium on bone resorption is dose-dependent. CONCLUSIONS: Epimedium can induce osteoclast apoptosis and inhibit bone resorption. The effect of Epimedium on bone resorption is dose-dependent.