[Adsorption Properties of Magnetic Phosphorous Camellia Oleifera Shells Biochar to Sulfamethoxazole in Water].

Magnetic phosphorous biochar （MPBC） was prepared from Camellia oleifera shells using phosphoric acid activation and iron co-deposition. The materials were characterized and analyzed through scanning electron microscopy （SEM）， X-ray diffractometry （XRD）， specific surface area and pore size analysis （BET）， Fourier infrared spectroscopy （FT-IR）， and X-ray photoelectron spectroscopy （XPS）. MPBC had a high surface area （1 139.28 m2·g-1） and abundant surface functional groups， and it could achieve fast solid-liquid separation under the action of an external magnetic field. The adsorption behavior and influencing factors of sulfamethoxazole （SMX） in water were investigated. The adsorbent showed excellent adsorption properties for SMX under acidic and neutral conditions， and alkaline conditions and the presence of CO32- had obvious inhibition on adsorption. The adsorption process conformed to the quasi-second-order kinetics and Langmuir model. The adsorption rate was fast， and the maximum adsorption capacity reached 356.49 mg·g-1. The adsorption process was a spontaneous exothermic reaction， and low temperature was beneficial to the adsorption. The adsorption mechanism was mainly the chemisorption of pyrophosphate surface functional groups （C-O-P bond） between the SMX molecule and MPBC and also included hydrogen bonding， π-π electron donor-acceptor （π-πEDA） interaction， and a pore filling effect. The development of MPBC adsorbent provides an effective way for resource utilization of waste Camellia oleifera shells and treatment of sulfamethoxazole wastewater.

Effect of vinegar steaming on the composition and structure of Schisandra chinensis polysaccharide and its anti-colitis activity.

In this study, infrared spectroscopy, high-performance liquid chromatography, and matrix-assisted laser desorption ionization-time-of-flight-mass spectrometry (MALDI-TOF-MS) technology were applied to systematically explain the Schisandra chinensis's polysaccharide transformation in configuration, molecular weight, monosaccharide composition, and anti-ulcerative colitis (UC) activity after vinegar processing. Scanning electron microscopic results showed that the appearance of S. chinensis polysaccharide changed significantly after steaming with vinegar. The MALDI-TOF-MS results showed that the mass spectra of raw S. chinensis polysaccharides (RSCP) were slightly lower than those of vinegar-processed S. chinensis polysaccharides (VSCP). The RSCP showed higher peaks at m/z 1350.790, 2016.796, and 2665.985, all with left-skewed distribution, and the molecular weights were concentrated in the range of 1300-3100, with no higher peak above m/z 5000. The VSCPs showed a whole band below m/z 3000, with m/z 1021.096 being the highest peak, and the intensity decreased with the increase of m/z. In addition, compared to RSCPs, VSCPs can significantly increase the content of intestinal short-chain fatty acids (SCFAs). This study showed that the apparent morphology and molecular weight of S. chinensis's polysaccharides significantly changed after steaming with vinegar. These changes directly affect its anti-UC effect significantly, and its mechanism is closely related to improving the structure and diversity of gut microbiota and SCFA metabolism.

[Optimization of processing technology of wine-processed Polygonati Rhizoma based on orthogonal test and AHP-comprehensive scoring method and comparison of immunomodulation functions of Polygonati Rhizoma processed with different methods].

This study employed orthogonal design and AHP-comprehensive scoring method to optimize the processing technology of wine-processed Polygonati Rhizoma, and then explored the immunomodulation performance of the product. Orthogonal test was established based on single factor test results to study the effects of soaking time, steaming time, and drying temperature on the quality of wine-processed Polygonati Rhizoma. Further, the analytic hierarchy process(AHP) and comprehensive scoring method were employed to determine the optimum processing parameters. The immunosuppression model of mice was established by injecting cyclophosphamide intraperitoneally. The body weight, immune organ index, and white blood cell count(WBC) and red blood cell count(RBC) in peripheral blood were compared between the mice administrated with the non-processed Polygonati Rhizoma and the wine-processed Polygonati Rhizoma prepared with modern and traditional methods. Further, the levels of interleukin-2(IL-2) and interferon-gamma(IFN-γ) in serum were determined by enzyme-linked immunosorbent assay(ELISA) for comparison. The processing parameters were optimized as follows: soaking in Chinese rice wine for 10 h, steaming for 20 h, and drying thick slices at 60 ℃. The wine-processed Polygonati Rhizoma prepared with both modern and traditional methods can significantly enhance the immune function, with similar performance. The optimized processing technology of wine-processed Polygonati Rhizoma is stable and feasible and the product prepared with this process has obvious immune-enhancing effect, which provides a basis for the quality standard formulation and the modern research of wine-processed Polygonati Rhizoma.

Five new degraded diterpenoids from Trigonostemon xyphophylloides.

Five new degraded diterpenoids trigoxyphins J-N (1-5), among them trigoxyphins K and L have a novel carbon skeleton, together with four known analogues (6-9) have been obtained from the ethanol extract of the twigs of Trigonostemon xyphophylloides. Compounds 1-5 were evaluated for their cytotoxic activity in vitro against three human tumor cell lines by MTT assay. The results exhibited that Trigoxyphin N (5) showed moderate cytotoxicities against SPC-A-1 and SGC-7901 cancer cell lines.