Naphthalene diimides have electrochromic applications due to their highly stable dark reduced state along with a transparent colourless neutral state. Here we show the morphology of aggregated structures at different pHs has greater influence on chromic properties than chemical structure.

The production of extracellular amylase by the halotolerant fungus Penicillium sp. was statistically optimized in a submerged cultivation. Maximum enzyme production was obtained after two days of incubation in a medium containing 10% (w/v) NaCl, in addition to MgSO .7H O 1% and 1% (w/v) of 4 2 starch. The optimum pH for growth and enzyme production was 4. Partial characterization of the crude e...

The aim of this study was to compare the results of the surgery of inguinal hernias using flat polypropylene mesh and three-dimensional prolene (PHS) mesh. The study included two groups of 40 male patients, aged 18-50 years, with the diagnosis of inguinal hernia. One group was operated with a flat polypropylene mesh, while the second group was operated with three-dimensional prolene (PHS) mesh....

Solid-state fermentation (SSF) was carried out to produce α-amylase from Aspergillus oryzae (IFO 30103) using spent brewing grains (SBG) as substrate. A maximum of 11296 U/gds amylase activity was obtained after 48 h of fermentation. The extracted enzyme was subjected to partial purification by ammonium sulphate fractionation. Maximum specific activity was obtained with 40-70% fraction. SDS-PAG...

Amylase is an enzyme that catalyzes the breakdown of starch into sugars and plays a pivotal role in a variety of areas like use as digestives, for the production of ethanol and high fructose corn syrup, detergents, desiring of textiles, modified starches, hydrolysis of oil-field drilling fluids, and paper recycling. In the present work, solid state fermentation (SSF) for α -amylase production h...

the snail caucasotachea lencoranea mousson is a pest of citrus in the north provinces of iran. in order to adopt a better control of the pest and develop optimal management strategies, an understanding of the digestive enzymes’ function is inevitable. snails were collected from some citrus orchards in the northern provinces of the country and digestive carbohydrases including ?-glucosidase, ?-g...

introduction: selected probiotic lactobacilli have inhibitory effect and therefore may be use as biological preservative, so, the aim of this study was to present some data on isolation, growth, antimicrobial activity, effect of ph, heat, and sensitivity to proteolytic enzymes of lactobacillus. material and methods: isolation of lactic acid bacteria from sausage was done by using 1g of samples ...

An alkaliphilic and highly thermostable α-amylase producing Bacillus sp. was isolated from Van soda lake. Enzyme synthesis occurred at temperatures between 25°C and 40°C. Analysis of the enzyme by SDS-PAGE revealed a single band which was estimated to be 66 kDa. The enzyme was active in a broad temperature range, between 20°C and 90°C, with an optimum at 50°C; and maximum activity was at pH 10....