Substitusi Minyak Jagung dengan Minyak Sawit Merah dalam Produksi Susu Bubuk Rekombinasi: Pengaruhnya pada Sifat Fisik dan Gizi

A research on substitution of milk fat with red palm oil in Milk Powder (MP) production has been conducted. The aim of this research was to investigate the effects of corn oil substitution with red palm oil on physical, chemical and nutritional properties of the recombined milk powder (RMP). Pre-formulated milk powder (PMP) was prepared by mixing of corn oil, skim milk powder, stabilizer and water followed by filtering, preheating, homogenization and spray drying. The corn oil was substituted with 0, 25, 50, 75 and 100% of red palm oil (RPO-0, RPO-25, RPO-50, RPO- 75 and RPO-100). RMP formula were prepared as a commercial milk powder formula with protein and fat content of 20% and 18%, respectively. Chemical and physical properties of the RMPs were analyzed. The RMPs were then reconstituted and sensory character as well as nutritional properties was examined. The result showed that substitution of 50% corn oil with red palm oil resulted in a red palm oil milk powder (RPOMP) similar to the corn oil milk powder (control milk powder) in term of panelist acceptability. This RPOMP have a higher wet ability and solubility index but lower dispersibility and similar density to the control milk powder. The RPOMP contain a lower total and beta carotene content but higher tocoferol content than the control milk powder. Spray drying in the pre-formulated milk powder processing decrease 90% of carotene content of the pre-formulated milk powder but the tocoferol content was not affected by the process. In Wistar rats, consumption of RPOMP for 4 weeks had no effects on the lipids profiles

Sifat Prooksidatif Fortifikan NaFeEDTA Dan Fe-SULFAT Pada Kecap Hasil Fortifikasi

Iron in iron-fortified soy sauce may have oxidative effect in both oil and amino acids or protein component. In order to evaluate the possible oxidative properties of both NaFeEDTA and FeSO fortificants, a study of oxidation in soy sauce fortified with the fortificants was conducted. Level of fortificant was 266 mg Fe/L of soy sauce. The extent of oxidation was measured by the level of peroxide value and TBARS value of oil component of fortified soy sauce, as well as car- bonyls content of soy sauce model. The effect of H O addition on level of oxidation was also evaluated. It was found that in soy sauce fortified with either NaFeEDTA or FeSO , the fortificants did not promote oxidation of oil and amino acids components. However, addition of H O made peroxide value, TBARS value, and carbonyls content of fortified samples increased

Experimental Signature of Medium Modifications for rho and omega Mesons in the 12 GeV p + A Reactions

The invariant mass spectra of e+e- pairs produced in 12-GeV proton-induced nuclear reactions are measured at the KEK Proton-Synchrotron. On the low-mass side of the omega meson peak, a significant enhancement over the known hadronic sources has been observed. The mass spectra, including the excess, are well reproduced by a model that takes into account the density dependence of the vector meson mass modification, as theoretically predicted.Comment: 4 pages, 3 figures, Version accepted for Physical Review Lette

In-medium hadronic spectral functions through the soft-wall holographic model of QCD

We study the scalar glueball and vector meson spectral functions in a hot and dense medium by means of the soft-wall holographic model of QCD. Finite temperature and density effects are implemented through the AdS/RN metric. We analyse the behaviour of the hadron masses and widths in the $(T,\mu)$ plane, and compare our results with the experimental ones and with other theoretical determinations.Comment: 16 pages, 6 figures. matching the published versio

Chiral Symmetry and light resonances in hot and dense matter

We present a study of the $\pi\pi$ scattering amplitude in the $\sigma$ and $\rho$ channels at finite temperature and nuclear density within a chiral unitary framework. Meson resonances are dynamically generated in our approach, which allows us to analyze the behavior of their associated scattering poles when the system is driven towards chiral symmetry restoration. Medium effects are incorporated in three ways: (a) by thermal corrections of the unitarized scattering amplitudes, (b) by finite nuclear density effects associated to a renormalization of the pion decay constant, and complementarily (c) by extending our calculation of the scalar-isoscalar channel to account for finite nuclear density and temperature effects in a microscopic many-body implementation of pion dynamics. Our results are discussed in connection with several phenomenological aspects relevant for nuclear matter and Heavy-Ion Collision experiments, such as $\rho$ mass scaling vs broadening from dilepton spectra and chiral restoration signals in the $\sigma$ channel. We also elaborate on the molecular nature of $\pi\pi$ resonances.Comment: 14 pages, 14 figures. Contribution to Hard Probes 2008, Illa de A Toxa, Spain, June 8th-14th 200

Search for the Θ+\Theta^{+} pentaquark via the π−p→K−X\pi^-p\to K^-X reaction at 1.92 GeV/cc

The $\Theta^+$ pentaquark baryon was searched for via the $\pi^-p\to K^-X$ reaction in a missing-mass resolution of 1.4 MeV/$c^2$(FWHM) at J-PARC. $\pi^-$ meson beams were incident on the liquid hydrogen target with the beam momentum of 1.92 GeV/$c$. No peak structure corresponding to the $\Theta^+$ mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2$^{\circ}$ to 15$^{\circ}$ in the laboratory frame was obtained to be 0.26 $\mu$b/sr in the mass region of 1.51$-$1.55 GeV/$c^2$.The upper limit of the $\Theta^+$ decay width using the effective Lagrangian approach was obtained to be 0.72 MeV/$c^2$ and 3.1 MeV/$c^2$ for $J^P_{\Theta}=1/2^+$ and $J^P_{\Theta}=1/2^-$, respectively.Comment: 5 pages, 3 figures, 1 tabl

Substitusi Minyak Jagung dengan Minyak Sawit Merah dalam Produksi Susu Bubuk Rekombinasi: Pengaruhnya pada Sifat Fisik dan Gizi

A research on substitution of milk fat with red palm oil in Milk Powder (MP) production has been conducted. The aim of this research was to investigate the effects of corn oil substitution with red palm oil on physical, chemical and nutritional properties of the recombined milk powder (RMP). Pre-formulated milk powder (PMP) was prepared by mixing of corn oil, skim milk powder, stabilizer and water followed by filtering, preheating, homogenization and spray drying. The corn oil was substituted with 0, 25, 50, 75 and 100% of red palm oil (RPO-0, RPO-25, RPO-50, RPO- 75 and RPO-100). RMP formula were prepared as a commercial milk powder formula with protein and fat content of 20% and 18%, respectively. Chemical and physical properties of the RMPs were analyzed. The RMPs were then reconstituted and sensory character as well as nutritional properties was examined. The result showed that substitution of 50% corn oil with red palm oil resulted in a red palm oil milk powder (RPOMP) similar to the corn oil milk powder (control milk powder) in term of panelist acceptability. This RPOMP have a higher wet ability and solubility index but lower dispersibility and similar density to the control milk powder. The RPOMP contain a lower total and beta carotene content but higher tocoferol content than the control milk powder. Spray drying in the pre-formulated milk powder processing decrease 90% of carotene content of the pre-formulated milk powder but the tocoferol content was not affected by the process. In Wistar rats, consumption of RPOMP for 4 weeks had no effects on the lipids profiles