- Email: [email protected]
Silsesquioxane nanohybrids as sun protection factor ingredients and films of greenhouse
Abstracts / Journal of Biotechnology 136S (2008) S402–S459
nitrogen limited condition (Tian et al., 2005). Kinetics of granule formation was studied using TEM.
S449
Zhang, X., Hu, L., Sun, D., Zhao, W., 2008. Three-dimensional configurations of organic/inorganic hybrid nanostructureal blocks: a quantum chemical investigation for cage structure of (␥-glycidoxypropyl) sisesquioxane. J. Mol. Stuct. 872, 197–204.
References doi:10.1016/j.jbiotec.2008.07.1042 Anderson, A.J., Dawes, E.A., 1990. Occurrence, metabolism, metabolic role and industrial uses of bacterial polyhydroxyalkanoates. Microbiol Rev 54, 450–472. Braunegg, G., Sonnleitner, B., Lafferty, R.M., 1978. A rapid gas chromatographic method for the determination of Poly-ß-Hydroxybutyric Acid in microbial biomass. Eur J Appl Microbiol Biotechnol 6, 29–37. Tian, J., He, A., Lawrence, A.G., Liu, P., Watson, N., Sinskey, A.J., Stubbe, J., 2005. Analysis of transient polyhydroxybutyrate production in Wautersia eutropha H16 by quantitative Western analysis and transmission electron microscopy. J. Bacteriol. 187, 3825–3832.
doi:10.1016/j.jbiotec.2008.07.1041
V4-P-127 Researches of novel supergiant cyanobacterial sugar chains with high viscosity and high water-absorption Yasuhiro Kaneso ∗ , Maiko Okajima, Tatsuo Kaneko School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan E-mail address: [email protected] (Y. Kaneso).
V4-P-125 Silsesquioxane nanohybrids as sun protection factor ingredients and films of greenhouse Di Wang 1,2 , Xiaodong Chen 3 , Xuandong Li 1 , Yu Liu 1 , Lijiang Hu 1,∗ 1
Department of Applied Chemistry, Harbin Institute of technology, Harbin 150001, China 2 Material Science and Engineering College, Northeast Forest University, Harbin 150040, China 3 School of Economics and Management, Harbin Institute of Technology, Harbin 150001, China E-mail address: [email protected] (L. Hu). Based on silsesquioxanes (SSO) derived from hydrolytic condensation of (3-methacrylpropyl) trimethoxysilane (MPMS), (3glycidoxypropyl)trimethoxysilane (GPMS) and vinyltrimethoxysilane (VMS), three hybrid nanofilms, f-MPMS-SSO (f-MS), f-GPMSSSO (f-GS) and f-VMS-SSO (f-VS), were prepared using sol–gel process and crosslinking (Hu et al., 2004). The average transparency (AT) and average absorption coefficients (AAC) of the films were measured in the ranges of 280–2500 nm. Two the film transparency applications were described in this work: (1) The AT values of the SSO films in the range of the ultraviolet B (UV-B) spectrum (280–320 nm) (a skin cancer-causing agent (Sunlight, 2008)) and (2) the AT values in the visible light (VIS) region (400–750 nm) and the near infrared (NIR) region (750–2500 nm) (Both the VIS and NIR light can give crops growth energy and the improvement of the photosynthetic process efficiency You and Barnett, 2004.). The AT values of the SSO films in the UV-B range is only about 12–17%, and the AAC values in this region are higher than 1.00, indicating these films can provide a physical barrier to block UV-B absorption by the skin, and therefore are possible SSO materials for sunscreen ingredients. The AT values in the VIS region are 85–92%, and the AT values in the near infrared region (750–2500 nm) are 89–92%; these high-AT films are good candidates for greenhouse covers. The average transparency values among three films were different due to the size of organic branches covalently bonded to the silica network in the molecular structures (Zhang et al., 2008), which was discussed in the article. References Hu, L., Zhang, X., You, H., Liu, Y., Sun, D., 2004. Characterization and coating properties of silsesquioxanes derived from the hydrolytic condensation of GPSM. J. Mater. Sci. 39, 1331–1335. Sunlight and skin cancer. Biomed. biotechnol. 1(2): 49. You, T., Barnett, S.M., 2004. Effect of light quality on production of extracellular polysaccharides and growth rate of Porphyridium cruentum. Biochem. Eng. J. 19, 251–258.
Today, the issue of petroleum substitutes does need to be addressed for increase in oil prices and environmentally concerns. Aphanothece sacrum is endemic cyanobacteria in Japan. To use of materials from cyanobacteria is useful. Novel supergiant sugar chains were successfully extracted for two methods from the jelly-like extracellular matrix of cyanobacteria, Aphanothece sacrum. The fact that the sugar chain extracted from Aphanothece sacrum was analyzed by NMR and IR, etc., therefore the sugar chain was suggested that have the sulfuric acid radical, the carboxyl group, and the amido group, and it is the bisexual sugar. Gemetilfcors found as the composition monosaccharide of the suger chains. The molecular weight was 16 million, and it was discovered a new Muramin of making to sulfuric acid as a monosaccharide by light scattering techniques, it has been understood that this sugar chain is a huge new sugar chain. When the percentage of absorption was measured by using the improvement type of the tea bag method that was about five times the hyaluronic acid in the alkaline extraction, and about four times in the autoclave extraction. In addition, when the percentage of absorption to the physiological saline was measured, about 11 times in the alkaline extraction and about 13 times in the autoclave extractions. This difference is thought to be related the bisexual sugar. It was changed the viscosity’s increasing in the alkaline extraction while the viscosity decreased when the hyaluronic acid added NaCl, and without existing in the autoclave extraction. We deduced that ion of the bisexual sugar acts salt, and it thinks whether to have eased the one that Na+ usually obstructs the adsorption of water. We will report on the day that the DSC and AFM were observed the effect of the salt on the shape of the polymer chain. References Kabata, K., et al., 2005. Kyuusyuu Toukai Univ. Bull. 24, 37–43. Panoff, J.-M., et al., 1988. Arch Microbiol. 150, 558–563.
doi:10.1016/j.jbiotec.2008.07.1043
nitrogen limited condition (Tian et al., 2005). Kinetics of granule formation was studied using TEM.
S449
Zhang, X., Hu, L., Sun, D., Zhao, W., 2008. Three-dimensional configurations of organic/inorganic hybrid nanostructureal blocks: a quantum chemical investigation for cage structure of (␥-glycidoxypropyl) sisesquioxane. J. Mol. Stuct. 872, 197–204.
References doi:10.1016/j.jbiotec.2008.07.1042 Anderson, A.J., Dawes, E.A., 1990. Occurrence, metabolism, metabolic role and industrial uses of bacterial polyhydroxyalkanoates. Microbiol Rev 54, 450–472. Braunegg, G., Sonnleitner, B., Lafferty, R.M., 1978. A rapid gas chromatographic method for the determination of Poly-ß-Hydroxybutyric Acid in microbial biomass. Eur J Appl Microbiol Biotechnol 6, 29–37. Tian, J., He, A., Lawrence, A.G., Liu, P., Watson, N., Sinskey, A.J., Stubbe, J., 2005. Analysis of transient polyhydroxybutyrate production in Wautersia eutropha H16 by quantitative Western analysis and transmission electron microscopy. J. Bacteriol. 187, 3825–3832.
doi:10.1016/j.jbiotec.2008.07.1041
V4-P-127 Researches of novel supergiant cyanobacterial sugar chains with high viscosity and high water-absorption Yasuhiro Kaneso ∗ , Maiko Okajima, Tatsuo Kaneko School of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan E-mail address: [email protected] (Y. Kaneso).
V4-P-125 Silsesquioxane nanohybrids as sun protection factor ingredients and films of greenhouse Di Wang 1,2 , Xiaodong Chen 3 , Xuandong Li 1 , Yu Liu 1 , Lijiang Hu 1,∗ 1
Department of Applied Chemistry, Harbin Institute of technology, Harbin 150001, China 2 Material Science and Engineering College, Northeast Forest University, Harbin 150040, China 3 School of Economics and Management, Harbin Institute of Technology, Harbin 150001, China E-mail address: [email protected] (L. Hu). Based on silsesquioxanes (SSO) derived from hydrolytic condensation of (3-methacrylpropyl) trimethoxysilane (MPMS), (3glycidoxypropyl)trimethoxysilane (GPMS) and vinyltrimethoxysilane (VMS), three hybrid nanofilms, f-MPMS-SSO (f-MS), f-GPMSSSO (f-GS) and f-VMS-SSO (f-VS), were prepared using sol–gel process and crosslinking (Hu et al., 2004). The average transparency (AT) and average absorption coefficients (AAC) of the films were measured in the ranges of 280–2500 nm. Two the film transparency applications were described in this work: (1) The AT values of the SSO films in the range of the ultraviolet B (UV-B) spectrum (280–320 nm) (a skin cancer-causing agent (Sunlight, 2008)) and (2) the AT values in the visible light (VIS) region (400–750 nm) and the near infrared (NIR) region (750–2500 nm) (Both the VIS and NIR light can give crops growth energy and the improvement of the photosynthetic process efficiency You and Barnett, 2004.). The AT values of the SSO films in the UV-B range is only about 12–17%, and the AAC values in this region are higher than 1.00, indicating these films can provide a physical barrier to block UV-B absorption by the skin, and therefore are possible SSO materials for sunscreen ingredients. The AT values in the VIS region are 85–92%, and the AT values in the near infrared region (750–2500 nm) are 89–92%; these high-AT films are good candidates for greenhouse covers. The average transparency values among three films were different due to the size of organic branches covalently bonded to the silica network in the molecular structures (Zhang et al., 2008), which was discussed in the article. References Hu, L., Zhang, X., You, H., Liu, Y., Sun, D., 2004. Characterization and coating properties of silsesquioxanes derived from the hydrolytic condensation of GPSM. J. Mater. Sci. 39, 1331–1335. Sunlight and skin cancer. Biomed. biotechnol. 1(2): 49. You, T., Barnett, S.M., 2004. Effect of light quality on production of extracellular polysaccharides and growth rate of Porphyridium cruentum. Biochem. Eng. J. 19, 251–258.
Today, the issue of petroleum substitutes does need to be addressed for increase in oil prices and environmentally concerns. Aphanothece sacrum is endemic cyanobacteria in Japan. To use of materials from cyanobacteria is useful. Novel supergiant sugar chains were successfully extracted for two methods from the jelly-like extracellular matrix of cyanobacteria, Aphanothece sacrum. The fact that the sugar chain extracted from Aphanothece sacrum was analyzed by NMR and IR, etc., therefore the sugar chain was suggested that have the sulfuric acid radical, the carboxyl group, and the amido group, and it is the bisexual sugar. Gemetilfcors found as the composition monosaccharide of the suger chains. The molecular weight was 16 million, and it was discovered a new Muramin of making to sulfuric acid as a monosaccharide by light scattering techniques, it has been understood that this sugar chain is a huge new sugar chain. When the percentage of absorption was measured by using the improvement type of the tea bag method that was about five times the hyaluronic acid in the alkaline extraction, and about four times in the autoclave extraction. In addition, when the percentage of absorption to the physiological saline was measured, about 11 times in the alkaline extraction and about 13 times in the autoclave extractions. This difference is thought to be related the bisexual sugar. It was changed the viscosity’s increasing in the alkaline extraction while the viscosity decreased when the hyaluronic acid added NaCl, and without existing in the autoclave extraction. We deduced that ion of the bisexual sugar acts salt, and it thinks whether to have eased the one that Na+ usually obstructs the adsorption of water. We will report on the day that the DSC and AFM were observed the effect of the salt on the shape of the polymer chain. References Kabata, K., et al., 2005. Kyuusyuu Toukai Univ. Bull. 24, 37–43. Panoff, J.-M., et al., 1988. Arch Microbiol. 150, 558–563.
doi:10.1016/j.jbiotec.2008.07.1043