B P International

The heat stress tolerance of hen egg white lysozyme (HEWL) was markedly enhanced by the adsorption of HEWL on bamboo charcoal powder (BCP), which is a kind of biochar. HEWL was firmly adsorbed on BCP even at high temperatures. The secondary structure of HEWL was altered to some extent by the adsorption of HEWL on BCP. The remaining activity of BCP-adsorbed HEWL exhibited more than 20% after the incubation for 30 min at 90°C although that of free one was hardly observed. Moreover, the half-life of BCP-adsorbed HEWL was 13 min at 90°C while that of free one was 4 min. Author(s) Details Hidetaka Noritomi Department of Applied Chemistry for Environment, Tokyo Metropolitan University, Tokyo, 192-0397, Japan. View Book: http://bp.bookpi.org/index.php/bpi/catalog/book/123

The adsorption immobilization of the serine protease α-chymotrypsin (α-CT) onto bamboo charcoal powder (BCP), which is a kind of biochar, improved the transesterification rate of N-acetyl-L-tyrosine ethyl ester (N-Ac-Tyr-OEt) with n-butanol (BuOH) in 9 organic solvents. Organic solvents strongly affected the catalysis of BCP-adsorbed α-CT. The transesterification rate of BCP-adsorbed α-CT was much superior to that of free α-CT in every organic solvent. Especially, the transesterification rate of BCP-adsorbed α-CT was about 760 times higher than that of free α-CT in n-butyl acetate. Author(s) Details Hidetaka Noritomi Department of Applied Chemistry for Environment, Tokyo Metropolitan University, Tokyo, 192-0397, Japan. View Book: http://bp.bookpi.org/index.php/bpi/catalog/book/123

Global warming caused by the greenhouse gases has resulted in unprecedented climatic changes. Various anthropogenic as well as natural processes serve as sources for emission of carbon dioxide, the most potent greenhouse gas. Soil carbon stocks, a key determinant of soil health is getting depleted at a fast rate, indirectly placing the global food security at stake. Considerable variability in the soil organic carbon stocks exists in above and below ground phytomass, which vary with latitude and climatic regions and with different land use systems. The recalcitrant carbon fraction not only reduces the losses of soil organic carbon but also serve in locking up the carbon by way of soil carbon sequestration thus reducing carbon dioxide emissions and global warming to a considerable extent. Soil carbon sequestration includes a host of technologies that are employed which has the potential to greatly reduce, capture and store carbon produced both by anthropogenic factors and natural mean...