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1	Author	R. Steiner, E. Cm, H. Scheer	Requires cookie*
	Title	Chemistry of Bacteriochlorophyll b: Identification of Some (Photo)Oxidation Products
	Abstract	Photoreactions o f bacteriochlorophyll b have been studied. They all arise from reactions at the A8,8' double-bond. The A7,8-isom erisation product 3 is formed under anaerobic conditions. Irradiation in the presence o f oxygen leads to three products arising from an autoxidation reaction involving singlet oxygen. The structures o f two o f them (4, 5) have been established from their m ethylpheophorbides 10 and 11 containing an 8-acetyl and 8-(m eth)oxyethyl-substituent, respectively, in addition to the isom erized A7,8-double bond.
	Reference	Z. Naturforsch. 38c, 748—7 (1983); received June 15 1983
	Published	1983
	Keywords	Bacteriochlorophyll, Ethylidene Group, Isomerisation, O xidation, Photosynthesis
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	TEI-XML for	default:Reihe_C/38/ZNC-1983-38c-0748.pdf
	Identifier	ZNC-1983-38c-0748
	Volume	38

2	Author	Y. Yamazaki, M.-R Kula	Requires cookie*
	Title	Entwicklung neuer Plattentests zum Nachweis mikrobieller Hydrolysen von Estern und Oxidationen von 2-Hydroxycarbonsäuren Developm ent of New Plate Tests for the D etection of Microbial Hydrolysis of Esters and Oxidations of 2-HydroxycarboxyIic Acids
	Abstract	The application o f the thin-agar-layer coated filter culture technique (Z. Naturforsch. 42c, 1082 (1987)) has been extended to the detection of ester hydrolysis and 2-hydroxyacid oxidation by microbial colonies. The former was perform ed by spraying with brom ocresol purple and the latter with a salicylhydrazide reagent. Under the optim ized conditions, the hydrolysis activity of more than 20 [imol/h • g-wet cells and the oxidation activity o f more than 40 \|j.mol/h • g-wet cells were usually detected directly on the filter-plate cultures o f bacteria, yeasts and molds.
	Reference	Z. Naturforsch. 42c, 1187—1192 (1987); received July 30 1987
	Published	1987
	Keywords	Esterase, M icrobial, O xidation, Indicator, Salicylhydrazide
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	TEI-XML for	default:Reihe_C/42/ZNC-1987-42c-1187.pdf
	Identifier	ZNC-1987-42c-1187
	Volume	42