Breast muscles from three different birds
were subjected to hydrostatic high-pressure (400 MPa)/temperature (10–75°C)
combinations, and the denaturation-induced effects on the pressurized proteins
monitored by DSC. Comparisons with parallel results from heating-alone processes
were established. Actin was the most labile moiety to pressurization and myosin
together with sarcoplasmic proteins were next in observing pressure-induced
denaturation at low temperatures. Some myosin derivatives (fragments or aggregates)
and collagen remained native-like under pressure at any temperature.
As previously reported, pressure and temperature showed interdependent
and antagonistic-like effects. Hydrostatic high-pressure caused severe proteins
denaturation at non thermal denaturing temperatures. At thermally active conditions,
pressure preserved proteins from subsequent thermal denaturation. This last
effect was lower than in similar but destructured myosystems (batters) because
of the absence of functional salts but presumably also by steric hindrance.
Authors:M.I. Piñon, A.D. Alarcon-Rojo, A.L. Renteria, G. Mendez and H. Janacua-Vidales
, E. , Karatapanis , A. , Savvaidis , I.N. & Kontominas , M.G.
2007 : Combined effect of oregano essential oil and modified atmosphere packaging on shelf-life extension of fresh chicken breast meat, stored at 4
Authors:Abraham Ajayi, Stella Ifeanyi Smith, Julien Coulibaly Kalpy, Ibidunni Oreoluwa Bode-Sojobi, Yao Kouamé René and Adeyemi Isaac Adeleye
be zoonotic. Establishing the route of transmission is more or less difficult, since the transmission chain is complex [ 2 , 5 , 6 ]. Food animals (chicken, pork, cattle, sheep, and even fish) are a major reservoir of diverse serovars of S
Authors:Katarzyna Szewczyk, Łukasz Komsta and Agnieszka Skalska-Kamińska
High performance thin-layer chromatography (HPTLC) combined with densitometry has been used for analysis of the triterpenoid content of acetone and ethyl acetate extracts of the leaves of
(Sims.) Opiz. After optimization of the extraction process, HPTLC separation was successfully standardized, using silica gel plates washed with methanol and dichloromethane, dichloromethane-ethyl acetate 18.5:1.5 as mobile phase, and 8% H
in ethanol (
) as spray reagent. Triterpenoids in the leaves of
were quantified by measurement of absorbance. Three spots were observed on chromatograms — the sum of α and β-amyrin, oleanolic acid, and an unidentified compound. All of the triterpenoid components were analyzed for the first time in this plant. The triterpenoid content was calculated statistically.
Authors:G. Sárközy, G. Semjén, P. Laczay and et al.
Charleston, B., Gate, J. J., Aitken, I. A., Stephan, B. and Froyman, R. (1998): Comparison of the efficacies of three fluoroquinolone antimicrobial agents, given as continuous or pulsed water medication, against E. coli infection in chickens. Antimicrob