Fermentation biotechnology is an important industrial process for the production of alcoholic beverages including wine. However, ageing of wine is always an important issue during production. In present study a attempt has made to produce wine by fermentation process along with the assesment of ageing of wine. In this experiment Grape fruit (jufeng) was used as a raw material and fermentation p...

Polymer gels undergo volume phase transition in a thermodynamically poor solvent as a result of changes in molecular interactions. The osmotic pressure of gels, both synthetic and biological in nature, induces swelling and imparts the materials with the capacity to resist compressive loads. We have investigated the mechanical and swelling properties of poly(vinyl alcohol) (PVA) gels brought int...

Strain improvement and medium optimization to increase the productivity of spiramycin were carried out. Of oil tolerant mutant strains screened, one mutant, Streptomyces ambofaciens XC 2-37, produced 9% more spiramycin than the parent strain S. ambofaciens XC 1-29. The effects of soybean oil and propyl alcohol on spiramycin production with S. ambofaciens XC 2-37 were studied. The potency of S. ...

Various chemicals including p-phenylenediamine, n-propyl gallate, 1,4-diazobicyclo[2,2,2]-octane and Citifluor were tested to determine their effectiveness in retarding the fading of fluorescein-conjugated antibody bound to eosinophil granule major basic protein in tissues. Immunofluorescence fading and intensity were measured quantitatively using the Zeiss Zonax microphotometer system. All of ...

Esters are organic compounds that widely used even on an industrial scale, so their production has been extensively investigated. The aim of this work is to carry out the optimization process esterification propionic acid with lower monohydric alcohols. influence amount catalyst (H2SO4), size and structure alcohol, a-substituent, molar acid/alcohol ratio temperature were descending order reacti...

A study was carried out in order to determine the effect of vitamins (biotin, thiamine, pantotheniic acid and pyridoxal) and micronutrient (zinc, boron, manganese and iron) deficiencies on higher alcohol production during alcoholic fermentation with the industrially used yeast Saccharomyces cerevisiae M-300-A. Zinc deficiency induced a reduction on the levels of isobutyl and isoamyl alcohols. A...

The catalytic esterification of n-propyl propionate using propionic acid and n-propyl alcohol as reactants via a conventional pilot plant reactive distillation column was carried-out. The strongly acidic ion-exchange resin Amberlyst46TM was used as the solid acid catalyst. The influence of the reflux ratio (from 2.0 to 2.5), the molar feed ratio (from 2.0 to 2.5), and total feed (from 3.0 to 4....

Naltrexone [systematic name: 17-(cyclo-propyl-meth-yl)-3,14-di-hydroxy-4,5α-epoxymorphinan-6-one] is an opioid receptor competitive antagonist that has been widely used to prevent relapse in opioid- and alcohol-dependent subjects. Its chloride salt forms non-isomorphic solvates with ethanol (C20H24NO4+·Cl-·C2H5OH) (I), propan-2-ol (C20H24NO4+·Cl-·C3H7OH) (II), and 2-methyl-propan-2-ol (C20H24NO...