The immobilization of α-amylase via adsorption on magnetic particles coated with polyaniline was studied. support characterized by field emission scanning electron microscopy (FESEM). obtained were agglomerates nanoparticles sizes below 100 nm. effects various factors immobilization, including time, the initial enzyme concentration, pH, and temperature, examined. optimum time for established to be 7, 45°C 75 min, respectively. maximum amount adsorbed 10/100 mg determined at 5 mg/mL...

The aim of this work was to produce biscuits from wheat flour substituted with different amounts sprout powder (2.5–7.5%). were subjected chemical, phytochemical, and microbial evaluations. crude protein, fat, ash contents the energy value increased increasing percentage powder. Adding sprouts resulted in higher values phenolics, alpha-tocopherol, antioxidant activity. There no statistically significant difference total phenolics alpha-tocopherol between supplemented 5% 7.5% sprouts....

Honey is a natural product which has high nutritional value. Also, it health benefits, the reason for its been used prevention of diseases caused by oxidative stress centuries in many countries. antibacterial and antioxidant properties, are result presence enzymes chemical phytochemical components, where phenolic acids flavonoids play significant role. The aim this study was to examine physico-chemical parameters, properties antimicrobial activity forest-meadow, acacia sunflower honey from...

It was analyzed the industrial plum pekmez production: blanching, mashing, cooking blanched pulp with invert sugar solution and caramel, final heat treatment, cooling surface treatment. The aim to determine critical stages in which hydroxymethylfurfural (HMF) forms. HMF is synthesized by thermal decomposition or as one product of Maillard reaction can be an indicator degree food processing. Also, a quality parameter due its potentially harmful effect on consumer health. stage when content...

The aim of the present study was to investigate biological activities extracts obtained from leaf Ziziphus jujuba. To reach this purpose, total phenolic content (TPC), flavonoid (TFC), DPPH and ABTS radical scavenging activity, as well antibacterial activity were evaluated. phenols in ranged 22.71 28.69 mg GAE/g, flavonoids 5.15 RE/g 8.25 depending on applied extraction method. All showed very high antioxidant activity. ethanol jujuba screened for against Salmonella typhimurium, enteritidis,...

Hazelnut oil is a high-quality nutritional product, especially the obtained by cold pressing. Cold-pressed oils generally retain original chemical composition and value of hazelnut kernel. Due to presence unsaturated fatty acids, subject oxidative thermo-oxidative changes depending on whether or kernels have been subjected inappropriate storage heat treatment. In this study, influence roasting at 180 °C for 24 minutes cold-pressed was investigated. Roasting caused an increase in acid oil,...

In commercial apiculture, beekepers usually remove honey from hives and replenish food reserves with sugar syrup. When honeybees use syrup (sucrose solution), they break down sucrose into glucose fructose. These processes exhaust weaken bees. order to prevent bee exhaustion resulting this processing, bees should preferably be supplied ready made before winter, i.e., in which has already been inverted. Feeding inverted syrups is the most popular way of honeybee feeding. Beekeepers prepare by...

The changes in the spectrum, peroxide numbers and specific absorbances (at 232 nm 270 nm) of fresh storaged oils (4 months at 4 °C) obtained by different hazelnuts pressing were monitored. results showed reduced viability oil from hazelnut exposed to elevated temperature during conditioning pressing: spectrum about 290 nm, a number close legally allowed maximum (7.5 mmolkg-1) possible presence secondary oxidation products. Sensory evaluation biscuits with that samples belonged categories...

A field trial with four red clover cultivars ('K-39', 'K-17', 'Una' and 'Viola') was conducted on a leached vertisol acid in reaction (pHH2O 4.8) to assess the effect of foliar treatment phosphorus potassium seed yield components. single application (P52K34) made at intensive growth stage during second year cultivation. Seed components were analyzed from experiment. Foliar had significant positive some years. The most recorded 'K-17' 'Viola'. different effects foliar-applied mineral...

The aim of this work was to investigate the content phytochemicals in celery root and its antioxidant antibacterial potential. total phenols 2.99 mg GAE g-1, flavonoids 1.38 RE tannins 1.87 g-1 vitamin C 12.7 100 g-1. Antioxidant activity measured by DPPH method expressed % inhibition were 42.26 or 2.38 µmol TE Antibacterial tested on pure cultures Enterococcus faecium, Listeria monocytogenes, Staphylococcus aureus, Salmonella enteritidis, E. Coli Serratia marcescens. monocytogenes showed...

Magnetic particles (MAG), obtained by standard procedure of coprecipitation Fe2+and Fe3+ in an excess ammonia, and polyaniline modified magnetic MAG-PANI were used as carriers for immobilization ?-amylase from Bacillus licheniformis. The formation a layer (PANI) on MAG was achieved chemical polymerization aniline. Immobilization carried out adsorption, simple, inexpensive fast method that allows retention large portion the initial activity immobilized enzyme. FTIR spectroscopy to...

Tehnologija razvija in spodbuja različna področja delovanja organizacij ter spreminja ustaljene okvire poslovnega sveta v smislu digitalnega. Ekosistem se skozi različne plasti posameznika, družbe, nacionalnih globalnih okvirov prepleta z osnovno celico družbe. Zagotavlja osnovo za preživetje trajnost. Zaradi kulturnih, družbenih ekonomskih sprememb, ki so med drugim tudi pod vplivom digitalnih tehnologij, je svet prešel pozitivne spremembe življenja zaposlenih, družbe nasploh. Povezovanje...

Many farms grow pumpkins, which they use to feed people and domestic animals. A by-product of this production is pumpkin seeds. He can get very high quality salad oil from it, has a market price. Pumpkin seeds contain up 55% oil. The paper analyzes 19 genotypes originating Central Western Serbia. Fruit weight, dry seed weight randman were measured. highest fruit found in G13 G4, while the was G19 G3 inversely proportional weight. Genotypes suitable for should have larger number smaller...