This study analyzed the inhibition activity of Swietenia mahagoni seeds extract on α-glucosidase and α-amylase enzymes inhibition assays.  Swietenia mahagoni seeds were extracted by using Supercritical Carbon Dioxide (SC-CO2) extraction at pressures of 20- 30 MPa and temperatures of 40- 60°C.  The oil yields obtained were analyzed with α- glucosidase and α- amylase enzymes inhibition assays.  A...

polyphenol oxidase (ppo) activity varied in differentiation from hyphae to rhizomorph and croute in a. mellea. in undifferentiated hyphae there was not any ppo activity, while croute showed the highest activity. electrophoresis in the presence of sds allows the detection of intensive enzyme forms of ppo, and can also convert slower migrating enzyme forms to faster ones. some fluorescent compoun...

adenylyl cyclase is a membrane-bound enzyme that catalyzes the conversion of atp to camp. the inhibition of adenylyl cyclase was carried out by measuring the ability of the macrophage chemotactic protein-1 to inhibit the torskolin-induced enzyme activity. adenylyl cyclase activity in the presenc of macrophage chemotactic protein-1 was decreased compared to that in controls [2.11+/-0.15 (mean +/...

in the present study, some techniques were used for soybean peroxidase (sbp) purification including: ammonium sulfate fractionation, deae sephadex anion exchange chromatography and concanavalin a sepharose 4b affinity chromatography. molecular weight of purified sbp was estimated about 44 kda by sds-page as a single polypeptide band. the optimal ph and temperature for enzyme activity were found...

objective(s): tyrosinase is a key enzyme in pigment synthesis. overproduction of melanin in parts of the skin results in hyperpigmentation diseases. this enzyme is also responsible for the enzymatic browning in fruits and vegetables. thus, its inhibitors are of great importance in the medical, cosmetic and agricultural fields. materials and methods: a series of twelve kojic acid derivatives wer...