Activite de la lipase de Rhizopus arrhizus en milieux eau-glycerol et eau-glycols

illus. 39 ref.National audienc

Lipides libres et lies de farines de bles tendres (Triticum aestivum)

National audienc

Lipides libres et lies de farines de bles tendres (Triticum aestivum)

National audienc

Spectrofluorimetrie appliquee a de la farine et du gluten de ble tendre pour l'etude des interactions lipide-proteine

illus. 27 ref.International audienc

Application de la fluorescence frontale a l'etude de la conformation des proteines et des interactions lipides-proteines de produits alimentaires au comportement viscoelastique. 2- Cas du gluten

International audienc

Phospholipid and fatty acid enrichment of Phanerochaete chrysosporium INA-12 in relation to ligninase production

International audienceLigninase activity of Phanerochaete chrysosporium INA-12 was increased when vegetable oils emulsified with sorbitan polyoxyethylene monooleate (Tween 80) were added to growth medium. Maximal enzyme yield was 22.0 nkat·ml-1 in olive oil cultures after 4 days incubation. P. chrysosporium INA-12 was also able to utilize tall oil fatty acids for ligninase synthesis. An extracellular lipase activity was detected during the primary phase of growth in culture containing vegetable oils. On the other hand, ligninase production was 1.5-fold enhanced when olive oil cultures were supplemented with soybean asolectin as a phospholipid source. In cultures supplied with olive oil plus asolectin, P. chrysosporium INA-12 mycelium exhibited a preferential enrichment of oleic acid (C18:1), phosphatidylcholine (PC) and lysophosphatidylcholine (LPC) as compared to lipid-free medium. PC and LPC enrichment was associated with an increased ratio of saturated versus unsaturated fatty acids of phospholipids

Application de la fluorescence frontale a l'etude de la conformation des proteines et des interactions lipides-proteines de produits alimentaires au comportement viscoelastique. 1- Dispositif experimental et validite des mesures de fluorescence frontale

International audienc