Abstract: The present invention is related to an improved method for production of 7-dehydrocholesterol (7-DHC), an important intermediate towards biotechnological production of vitamin D3 or derivatives/metabolites thereof. The invention features modified host strains expressing enzymes having improved C-5 sterol 5 desaturase activity and their use in a process for production of vitamin D3 or derivatives and/or metabolites thereof.

Abstract: A heat-transfer label assembly and method of using the same. In one embodiment, the assembly is adapted for decorating glass articles and comprises a carrier, the carrier comprising a paper substrate overcoated with a layer of polyethylene. The polyethylene layer is overcoated with a skim coat of wax. One or more heat-transfer labels are printed onto the skim coat and are spaced apart from one another. Each label consists of one or more ink design layers, each ink design layer comprising a binder resin, a pigment, a cross-linking resin and a catalyst. The catalyst is capable of causing the cross-linking resin to cross-link the binder resin within 1-2 minutes after the label has been transferred to a glass article that has been preheated to a temperature of about 250° F.-325° F.