Liquid handling properties of hollow viscose rayon/super absorbent fibers nonwovens for reusable incontinence products     

Ga Hee Kim  Ji Ho Youk  Yoon Jin Kim  Jung Nam Im 《Fibers and Polymers》2016,17(7):1104-1110

To develop reusable incontinence products, blend nonwovens of hollow viscose rayon (HVR) and super absorbent fibers (SAFs) were prepared using a needle-punching process and their liquid handling properties, such as the fluid absorption capacity, fluid retention capacity, fluid absorption under load, moisture evaporation rate, and repeated water absorption were investigated. As the SAF content in the HVR/SAF blend nonwovens was increased, the fluid absorption capacity, fluid retention capacity, and fluid absorption under load increased, whereas the moisture evaporation rate decreased. SAF had a more significant effect on fluid retention than fluid absorption. In the case of HVR/SAF(8/2) and HVR/SAF(7/3), more than 100 % of the fluid absorption capacity was retained even after 5 cycles of repeated water absorption tests. Overall, the HVR/SAF blend nonwovens are good candidates for reusable incontinence products.  相似文献   

Solar Photocatalytic Mineralization of Dye New Coccine in Aqueous Phase Using Different Photocatalysts     

Wan Fadhilah Khalik  Li-Ngee Ho  Soon-An Ong  Yee-Sian Wong  Nik Athirah Yusoff  Fahmi Ridwan 《Water, air, and soil pollution》2016,227(4):118

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Cloning of a novel phytase from an anaerobic rumen bacterium,Mitsuokella jalaludinii,and its expression in Escherichia coli     

TAN Wan-qin  Phang Chiun Yee  Sieo Chin Chin  Yiap Beow Chin  Clemente Michael Wong Vui Ling  Norhani Abdullah  Son Radu  Ho Yin Wan 《农业科学学报》2015,14(9):1816-1826

The full length phytase gene of Mitsuokella jalaludinii was successfully cloned and was found to be 1 047 bp in length, with 348 amino acids, and was designated as PHY7 phytase gene. A comparison of the sequence of PHY7 phytase gene of M. jalaludinii with various microbial phytase gene sequences showed that it was not similar to those from other bacteria except Selenomonas ruminatium, thus suggesting that they may both express a new class of phytase. The PHY7 phytase gene was subsequently subcloned into bacterial expression vector, p ET32 a, for expression in Escherichia coli strain Rosetta-gami. Expression of the recombinant phytase gene was optimised and characterised. The recombinant phytase was estimated to be approximately 55 k Da by SDS-PAGE analysis. The recombinant phytase exhibited optimum activity at 55°C, p H 4.5 and showed good p H stability from p H 3.5 to 5.5(78% relative activity). Metal ions such as Ca2+, Mg2+, and K+ were found to exert significant stimulatory effect on the recombinant phytase activity while Cu2+, Fe3+, and Zn2+ greatly inhibited the enzyme activity. The recombinant phytase showed moderate resistance to trypsin proteolysis, but susceptible to pepsin proteolysis. The results of the study showed that several characteristics of recombinant phytase were slightly different from the native enzyme. Unfavourable characteristics such as reduced p H stability and metal ion effects should be taken into consideration during feed enzyme formulation.  相似文献   

Rapid testing methods for food contaminants and toxicants     

Jiachi Chiou  Arthur Ho Hon Leung  Hang Wai Lee  Wing-tak Wong 《农业科学学报》2015,14(11):2243-2264

Food safety is one of the major concerns in every country regardless of the economic and social development. The frequent occurrence of food scandals in the world has led the Chinese government to implement several strategies to fortify the food supply system to a high food safety standard. This relies heavily on laboratory testing services but conventional methods for detection of food contaminants and toxicants are limited by sophisticated sample preparation procedures,long analysis time,large instruments and professional personnel to meet the increasing demands. In this review,we have incorporated most of the current and potential rapid detection methods for many notorious food contaminants and toxicants including microbial agents,toxic ions,pesticides,veterinary drugs and preservatives,as well as detection of genetically modified food genes and adulterated edible oil. Development of rapid,accurate,easy-to-use and affordable testing methods could urge food handlers and the public to actively screen for food contaminants and toxicants instead of passively relying on monitoring by the government examination facility. This review also provides several recommendations including how to encourage the public to engage in the food safety management system and provide optimal education and financial assistance that may improve the current Chinese food safety control system.  相似文献   

Relationship between mineral composition or soil texture and available silicon in alluvial paddy soils on the Shounai Plain, Japan   总被引：1，自引：0，他引：1  

Shuhei MAKABE  Ken-ichi KAKUDA  Yuka SASAKI  Tadashi ANDO  Hiroshi FUJII  Ho ANDO 《Soil Science and Plant Nutrition》2009,55(2):300-308

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Rat bite fever     

Wim Gaastra  Ron Boot  Hoa T.K. Ho  Len J.A. Lipman 《Veterinary microbiology》2009

Rat bite fever (RBF) is a bacterial zoonosis for which two causal bacterial species have been identified: Streptobacillis moniliformis and Spirillum minus. Haverhill fever (HF) is a form of S. moniliformis infection believed to develop after ingestion of contaminated food or water.  相似文献   

Anti-obesity activity of diglyceride containing conjugated linoleic acid in C57BL/6J ob/ob mice     

Jin-Joo Hue  Ki Nam Lee  Jae-Hwang Jeong  Sang-Hwa Lee  Young Ho Lee  Seong-woon Jeong  Sang Yoon Nam  Young Won Yun  Beom Jun Lee 《Journal of veterinary science (Suw?n-si, Korea)》2009,10(3):189-195

This study was to investigate the anti-obesity effects of diglyceride (DG)-conjugated linoleic acid (CLA) containing 22% CLA as fatty acids in C57BL/6J ob/ob male mice. There were four experimental groups including vehicle control, DG, CLA, and DG-CLA. The test solutions of 750 mg/kg dose were orally administered to the mice everyday for 5 weeks. CLA treatments significantly decreased mean body weight in the obese mice throughout the experimental period compared to the control (p < 0.01). All test solutions significantly decreased the levels of triglyceride, glucose and free fatty acids in the serum compared with control (p < 0.05). The levels of total cholesterol were also significantly reduced in DG and DG-CLA groups compared with the control group (p < 0.05). CLA significantly decreased weights of renal and epididymal fats compared with the control (p < 0.05). DG and DG-CLA also significantly decreased the epididymal fat weights compared with the control (p < 0.05). A remarkable decrease in the number of lipid droplets and fat globules was observed in the livers of mice treated with DG, CLA, and DG-CLA compared to control. Treatments of DG and CLA actually increased the expression of peroxisome proliferator-activated receptor gamma. These results suggest that DG-CLA containing 22% CLA have a respectable anti-obesity effect by controlling serum lipids and fat metabolism.  相似文献   

Determining the origin of Al in the outflow from a forest watershed of a suburban forest in Japan by analysis of size distribution     

Min Sik?KimEmail author  Chisato?Takenaka  Ho Taek?Park 《Journal of Forest Research》2006,11(1):27-33

This study clarified the origin of Al in spring water and stream water by analyzing the size distribution of Al of ground water, spring water, stream water, and soil extracts obtained by batch and column experiments using samples from a suburban secondary forest on granite bedrock in Aichi Prefecture. The high concentration of dissolved Al (Al_0.45; fraction through 0.45-μm filter) in water samples obtained from this study site was divided into completely dissolved and small colloidal forms (<0.20 μm; Al_0.20) and large colloidal forms (0.20–0.45 μm). More than 50% of dissolved Al (Al_0.45) in spring water existed in large colloidal form. By comparing the size distribution and concentration of various elements including Al in the samples from soil batch and column experiments, we suggest that the high concentration of Al in spring water is caused by the release of Al from surface soils when ground water emerges as spring water.  相似文献   

Green tea polyphenol epigallocatechin-3-gallate protects cells against peroxynitrite-induced cytotoxicity: modulatory effect of cellular G6PD status     

Ho HY  Wei TT  Cheng ML  Chiu DT 《Journal of agricultural and food chemistry》2006,54(5):1638-1645

Glucose-6-phosphate dehydrogenase (G6PD) plays important roles in the maintenance of cellular redox balance. It was not until recently that the importance of G6PD in regulation of cellular growth and apoptosis emerged. In the present study, we found that G6PD-deficient fibroblasts were more susceptible to peroxynitrite-induced cytotoxicity. Treatment with peroxynitrite generator 3-morpholinosydnonimine (SIN-1) hydrochloride caused apoptosis in human fibroblast in a dose-dependent manner. This was preceded by a decrease in the intracellular level of glutathione (GSH) as well as accumulation of p53. The extent of apoptosis and glutathione depletion were greater in G6PD-deficient fibroblasts than in the normal counterpart. Pretreatment with green tea polyphenol epigallocatechin-3-gallate (EGCG) effectively blocked peroxynitrite-induced glutathione depletion, p53 accumulation, and apoptosis in both normal and G6PD-deficient cells. EGCG, administered to cells alone or as pretreatment, caused activation of Akt. The protective effect was abolished by phosphatidylinositol 3-kinase (PI3K) inhibitors, wortmannin, and LY294002. Our findings suggest that G6PD deficiency enhances the toxicity of peroxynitrite and that EGCG initiates cell survival signaling via the PI3K/akt pathway.  相似文献   

Preparation and properties of antibacterial Poly(vinyl alcohol) nanofibers by nanoparticles     

Hyoung Guen Kim  Joon Ho Kim 《Fibers and Polymers》2011,12(5):602-609

Poly(vinyl alcohol) (PVA)/Ag-zeolite nanofiber webs were prepared with different concentrations of Ag-zeolite nanoparticles by the electrospinning technique. Scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), transmission electron microscopy (TEM), Fourier transform-infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Instron, and antibacterial activities analysis were utilized to characterize the morphology and properties of the PVA/Ag-zeolite nanofiber webs. The study results showed that the polymer concentration, applied voltages and tip-to-collector distances were the main factors influencing the morphology of the electrospun nanofiber webs. The introduction of Ag-zeolite nanoparticles improved the mechanical properties and thermal stability of the PVA nanofiber webs. TEM data demonstrated that the Ag-zeolite nanoparticles were well distributed within the nanofiber. FTIR revealed a possible interaction between the PVA matrix and the Ag-zeolite nanoparticles. These fibers showed an antibacterial efficacy of 99.8 % and over against Staphylococcus aureus and Klebsiella pneumoniae at Ag-zeolite concentrations of 1 % and over, because of the presence of the silver nanoparticles in the zeolite.  相似文献