Preparation and properties of microfibrillated cellulose with different carboxyethyl content.

Carboxyethyl reaction was used as a pretreatment method before grinding and homogenization to prepare microfibrillated cellulose (MFC). The effect of carboxyethylation on the properties of cellulose materials and prepared MFC samples were investigated. Results showed that cellulose materials with different carboxyethyl content were obtained by controlling the chemical dosage.

Integrated hot-compressed water and laccase-mediator treatments of Eucalyptus grandis fibers: structural changes of fiber and lignin.

Eucalyptus grandis fibers were treated with hot-compressed water (HCW) and laccase mediator to enhance the fiber characteristics and to produce an active lignin substrate for binderless fiberboard production. The composition, morphology, and crystallinity index (CrI) analysis of fibers showed that the HCW treatment increased the CrI and lignin content of the treated fibers through partial removal of hemicelluloses. Simultaneously, the HCW treatment produced some granules and holes on the surface of the fibers, which possibly facilitated the accessibility of the laccase mediator.

Preparation and Characterization of Lignocellulosic Oil Sorbent by Hydrothermal Treatment of Fiber.

This study is aimed at achieving the optimum conditions of hydrothermal treatment and acetylation of fiber to improve its oil sorption capacity (OSC) in an oil-water mixture. The characteristics of the hydrolyzed and acetylated fibers were comparatively investigated by FT-IR, CP-MAS C-NMR, SEM and TGA. The optimum conditions of the hydrothermal treatment and acetylation were obtained at170 °C for 1 h and 120 °C for 2 h, respectively.

[Improvement effect of vitamins B1, B2 and PP supplementation on substance metabolism of mice exposed to acute hypoxia].

Objective: To explore the improvement effect of vitamins B1, B2, PP supplementation to the metabolism changes of carbohydrates, lipids, protein and energy in mice exposed to acute hypoxia.

Methods: Fifty male Kunming mice were randomly divided into normal, acute hypoxia, acute hypoxia plus 2 times, 4 times and 8 times vitamins B1, B2, PP supplemented groups. All mice were fed corresponding diets for two weeks and then except the normal group were exposed to a simulated altitude of 6 000 meters for 8 hours.

[The metabolic changes of mice serum after loaded swimming].

Objective: To investigate the metabolic changes of mice serum after loaded swimming and to provide a basis for the study of anti-fatigue functional food.

Methods: The male Kunming mice were randomly divided into four group, fed an AIN-93 diet for 14 days, and forced to swim for 30, 60 or 120 min, respectively, with a load on their tails. The mice were executed after swimming immediately and the changes of serum metabolic profiles were analyzed using metabolomic approach.

Metabolomic study on vitamins B₁, B₂, and PP supplementation to improve serum metabolic profiles in mice under acute hypoxia based on ¹H NMR analysis.

Objective: To explore metabolic changes after acute hypoxia and modulating effect of vitamins B₁, B₂, and PP supplementation in mice exposed to acute hypoxia.

Methods: Fifty male Kunming mice were randomly divided into 5 groups: normal, acute hypoxia, acute hypoxia with 2, 4 and 8 time-vitamins B₁, B₂, and PP supplementation. All mice were fed with corresponding diets for two weeks and then were exposed to a simulated altitude of 6,000 meters for 8 h, except for the normal group.

[Effects of soybean isoflavones on the cell cycles, the cell apoptosis and the proliferation of spleen in radiated mice].

Aim: To study effect of soybean isoflavones (SI) on spleen in radiated mice.

Methods: 90 male mice were randomly divided into control group, radiated group, radiated plus 0.5% dose SI group.