Objective: To study the antiviral effect of polysaccharides from brown seaweed Lobophora variegata. Method: The crude polysaccharide was extracted with boiling water and precipitated with ethanol,and then fractionated with ion exchange chromatography. Its antiviral activity was tested by cytopathic effect (CPE) reduction assay and plaque reduction assay. The cytotoxicity of the water crude extract was determined by MTT method. Results: The crude water extract showed markedly antiviral activity against herpes simplex virus (HSV) type 1 and type 2 including ACV resistant strain and clinical strains with low EC50 values of 18.2 and 6.25 μg/ml respectively. It also showed very low cytotoxicity to Vero, HEp-2 and MDCK cells. Therefore, the crude extract possessed high selective index for antiviral effect. It also had some inhibitory effect on respiratory syncytial virus (RSV) but had no effect on influenza A virus. Two fractions were isolated from the water crude extract and they exhibited anti-HSV activity in the test of CPE reduction assay in Vero cells. Conclusion: Seaweed Lobophora variegata contains antiviral polysaccharides with high inhibitory effect on herpes simplex virus.

Iron deficiency (ID) and iron deficiency anemia (IDA) remain prevalent nutritional problems in many parts of the world. Among infants and young children, IDA has adverse effects on growth and development. Mental deficits exhibited in infancy can be long lasting. Efforts are being made to combat these problems. However, in the past decade little success was made. Currently there is interest in developing home fortificants that are versatile, inexpensive, efficacious and effective. One of these is the Sprinkles, which contain iron fumarate coated with a soy lipid and other micronutrients. The Sprinkles is packaged in small sachets and intended to be added to ready-to-eat home-prepared complementary foods once a day. An acceptance test was conducted in 5 cities in China. The Sprinkles was provided for the acceptance by infants aged 6-24 months and children of 2-5 years in 4 successive weeks. Their mothers were interviewed 4 times during the period of the study. The results showed that both the mothers, the infants and young children accepted the foods with added Sprinkles well.

40 years old in 6 Uygur communities of Urumqi. The multi-phasic stratified cluster sampling method was adopted. Finally 191 men with high risk were selected as samples in the study and classified into two groups according to oral glucose tolerance test(OGTT)results, anthropometric and biochemical indicators. Results The prevalence of type 2 diabetes and IGR was 17.39% and 7.56% respecfively in the Uygur nationality. Waist-hip ratio, abdominal and waist circumference,the level of HbA1c and serum insulin of male diabetic patients were significantly higher than those of male IGR potieuts. But another four indicators of blood lipid and three indicators of renal function were not significantly different between two groups. Conclusion The indicators releted to abdominal obesity may be sensitive to diabetes and valuable to screen diabetic patients for giving effective health education and behavioral intervention in high risk population.

Objective To investigate the effect of ginsenoside on degeneration of learning and memory in aged mice and the mechanism. Method Eighty female C57BL/6J mice aged 20-mo were randomly divided into control group and three ginsenoside treatment groups at dosage of 25,50,100 mg/(kg bw?d) respectively by drinking. In addition, 20 female C57BL/6J mice aged 3 mo were used to be young control group. Eight mo later, the learning and memory abilities of the mice were checked by Morris water maze. Thereafter, the mice were killed by decapitation,and their serum was collected to determine the level of SOD, GSH-Px and MDA. Hippocampal morphology was examined by Nissl stain; and the expression of brain-derived neurotrophic factor (BDNF) in hippocampus was studied using Western blot method. Results 50,100 mg/(kg bw?d) ginsenosides administration could significantly shorten the escape latency of the aged mice in Morris water maze. Furthermore,the alleviated oxidative stress and up-regulated expression of BDNF were observed in 50, 100 (mg/kg?d) ginsenosides groups compared with aged control group. Serum level of GSH-Px was higher in 25 (mg/kg bw?d) ginsenosides group compared to that of aged control group. The number of Nissl-positive cell had no significant difference between all groups. Conclusion 50,100 mg/(kg bw?d) ginsenoside can significantly delay the degeneration of learning and memory in aged mice by lowering oxidative damage and up-regulating BDNF expression in hippocampus.

Objective To study the effects of Ginkgo biloba extract (GBE) on free radical metabolism of different fiber types of quadriceps in exercised rats and its mechanism. Method Increasing load exercised rat model was selected. The test rats were orally given GBE aqueous suspension (100 mg/ kg?d), and the controls with water. The levels of malondialdehyde (MDA) and the activities of total superoxide dismutase (T-SOD), glutathione peroxidase (GSH-Px) of red muscle, white muscle and whole quadriceps of exercised rats were examined before exhaustive exercise, at instant,24h and 48h after strenuous exhaustive exercise. Results Compared with the controls,MDA contents were 49.69% higher in white muscle (P

To revise Chinese Diet Balance Index (DBI) based on the current Chinese Dietary Guidelines and Food Guide Pagoda . Method: Seven food components [(cereals ,vegetables and fruits, bean and dairy , animal food , alcohol ,condiments (salt and edible oil))were selected in combination with food varieties and drinking water to build up Diet Balance Index Revision (DBI-07) .The components were weighed and assigned cut-offs and scores based on the Chinese Food Guide Pagoda. Three scoring methods (LBS-low bound score, HBS-high bound score, DQD-diet quality distance) were used to evaluate the dietary quality of 26300 adults aged 18 to 79 years from 2002 China National Nutrition and Health Survey. Results: The mean LBS, HBS and DQD were 11.5,30.0 and 41.5 respectively. About 78% adult were in moderate or severe deficit of food intake, 35.1% in moderate or severe surplus of food intake, and 43.8% in severe dietary imbalance. Conclusion: DBI-07 can reflect the principles of dietary guidelines, and the scoring method can reflect both deficit and surplus of food intake. DBI-07 can be used to evaluate the dietary quality of individual or the population.

Objective To compare the chemical composition of Auricularia auricula polysaccharide and the colloid, and the property of the different component-Fe complex. Method Auricularia auricula polysaccharide and the colloid were prepared first, then Auricularia auricula polysaccharide iron complex (APIC)and Aurcularia auricula glia iron complex (AGIC) were synthesized respectively with FeCl3 under alkaline condition, and their physicochemical property was determined. Results The stablility of AGIC was better than APIC and AGIC could be reduced to Fe(Ⅱ)by ascorbic acid more easily. Conclusion The Auricularia auricula colloid could combine with Fe(Ⅲ)easier than the polysaccharide, and would be expected to become a higher bioavailable iron-supplement.

Objective To study the effect of diet containing different proportions of porphyra powder on relieving constipation, volatile organic compounds and inhibiting intestinal E. coli. Method Mice were divided into 3 groups: blank group, 2 test groups. After the mice were allotted for different concentrations of porphyra powder diet for 30 d, the body weight of mice, water-holding capacity, the number and weight of feces within 24 h, the feces pH, E. coli counts and the first black defecating time were detected. The odorous compounds in feces were also measured by headspace solid phase microextraction coupled with GC-MS. Results Compared with the blank group, the water absorbed and number and weight of feces were significantly increased(P

Objective To investigate the antiradiation effect of sinapine in Drosophita. Method Sinapine in cauliflower was quantified by HPLC, and added in Drosophila culture substrate. We observed the effect of sinapine from cauliflower on reproductive rate, sex ratio, mutation rate of Drosophila after UV radiation. Results Sinapine in cauliflower contained 4.429 ?g/ml thiocyanate. After adding sinapine thiocyanate 0.29075 mg/ml to the media,the reproductive rate of UV irradiated Drosophila culture increased 27.083%, the sex ratio (female/male) and mutation rate declined 23.457% and 97.202% respectively, and the growth cycle became normal again. Conclusion Cauliflower’s sinapine thiocynate has quite favorable anti-radiation function.