International Journal of Food Agriculture and Environment, 2010
Résumé/Abstract This study was conducted to determine the betacyanin, chlorophyll, total polyphen... more Résumé/Abstract This study was conducted to determine the betacyanin, chlorophyll, total polyphenol, antioxidant activity and leaf color parameters of three edible amaranth (Amaranthus tricolor L. subsp. mangostanus L. Allen) cultivars grown under five different shade levels. Red-fleshed leaf cultivars Rocto Alta and Altopati and a greenfleshed leaf cultivar SAT-072 were grown in the open field (no shading) and four selected shading regimes covered by one layer of white, one layer of black, two layers of black and four ...
Biomass yield and accumulations of betacyanin, chlorophyll, total polyphenol, and antioxidant act... more Biomass yield and accumulations of betacyanin, chlorophyll, total polyphenol, and antioxidant activity were evaluated growing red amaranth (Amaranthus tricolor L.) in spring season under five different shades made of white, blue, green, yellow, and black polyethylene, and non-shaded frame. Temperature and light intensity varied significantly (P< 0.05) under the different colored polyethylene shades, and these differences in microclimate are implicated for the variability in growth and accumulations of bioactive compounds. The ...
Journal of the Japanese Society for Horticultural Science, 2008
抄録 The total polyphenol content and antioxidant activity were compared in the leaves of seven red... more 抄録 The total polyphenol content and antioxidant activity were compared in the leaves of seven red amaranth (Amaranthus tricolor L.) cultivars. The effect of the sunlight level on the accumulation of total polyphenol content and antioxidant activity was also investigated by growing plants under full sunlight and shaded conditions. The total phenolic content and antioxidant activity differed among the cultivars studied, and leaves from the cultivar'Rocto Joba'and'Rocto Lal'had the highest phenolics and antioxidant activity, respectively. These ...
Abstract Seven cultivars of red amaranth (Amaranthus tricolor L.) with different leaf color were ... more Abstract Seven cultivars of red amaranth (Amaranthus tricolor L.) with different leaf color were evaluated for their betacyanin and chlorophyll content at two stages of development. The effects of food processing factors such as thermal treatment, light, H 2 O 2, and prolonged storage on betacyanin extracts were also examined. Betacyanin concentrations were highly correlated with the leaf color index and the cultivars (Rocto joba, BARI-1, and Altopati) with better color index tended to be associated with high betacyanin. Within a ...
Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627 MATTHEW A. AND ... more Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627 MATTHEW A. AND SHOBITA GREENHOUSE SATYAPAL Goddard Space Flight Center, Greenbelt, MD 20771 HOWARD A. SMITH Smithsonian Astrophysical Observatory, Cambridge, MA ...
ABSTRACT We present Herschel PACS spectra of Spitzer identified protostars in the Orion molecular... more ABSTRACT We present Herschel PACS spectra of Spitzer identified protostars in the Orion molecular clouds, obtained as part of the Herschel Orion Protostar Survey (HOPS). HOPS is a 200-hour Herschel open-time key program which will obtain PACS photometry at 70 and 160 microns for 286 protostars and PACS spectra from 55 to 210 microns for 36 protostars. We will use the Spitzer IRAC/MIPS and PACS photometry and SED modeling to characterize the envelope and disk properties and the evolutionary states of the Orion protostars. The spatial distribution and excitation states of the fine structure lines such as [OI] and [CII] and molecular lines such as H2O, OH and CO in the PACS spectra will be used to study the physical conditions and heating mechanisms in the envelopes and outflows in protostars. Complementing the PACS spectra with high resolution Spitzer IRS spectra, we will measure various flow rates in these protostellar systems and study the jet/outflow feedback onto the surrounding molecular material.
We present estimates for the effective temperature, luminosity, extinction and excess infrared em... more We present estimates for the effective temperature, luminosity, extinction and excess infrared emission for ~ 40 members of the young embedded cluster NGC 2024. These results were derived from infrared (2.15-2.35 mu m) spectroscopy and J, H, K and L(') \ photometry. We estimate the masses and ages of these stars by comparing their location on the H-R diagram to
Charles A. Poteet 1, S. Thomas Megeath 1, Dan M. Watson 2, Nuria Calvet 3, Ian S. Remming 2, Meli... more Charles A. Poteet 1, S. Thomas Megeath 1, Dan M. Watson 2, Nuria Calvet 3, Ian S. Remming 2, Melissa K. McClure 2, 3, Benjamin A. Sargent 4, William J. Fischer 1, Elise Furlan 5, Lori E. Allen 6, Jon E. Bjorkman 1, Lee Hartmann 3, James Muzerolle 4, John J. ...
ABSTRACT We present the Spitzer Space Telescope Infrared Spectrograph spectrum of the Orion A pro... more ABSTRACT We present the Spitzer Space Telescope Infrared Spectrograph spectrum of the Orion A protostar HOPS-68. The mid-infrared spectrum reveals crystalline substructure at 11.1, 16.1, 18.8, 23.6, 27.9, and 33.6 microns superimposed on the broad 9.7 and 18 micron amorphous silicate features; the substructure is well matched by the presence of the olivine end-member forsterite. Crystalline silicates are often observed as infrared emission features around the circumstellar disks of Herbig Ae/Be stars and T Tauri stars. However, this is the first unambiguous detection of crystalline silicate absorption in a cold, infalling, protostellar envelope. We estimate the crystalline mass fraction along the line-of-sight by first assuming that the crystalline silicates are located in a cold absorbing screen and secondly by utilizing radiative transfer models. The resulting crystalline mass fractions of 0.14 and 0.17, respectively, are significantly greater than the upper limit found in the interstellar medium (< 0.02-0.05). We propose that the amorphous silicates were annealed within the hot inner disk and/or envelope regions and subsequently transported outward into the envelope by entrainment in a protostellar outflow
We present an analysis of the L 1641 outflow region using broad-band and narrow-band imaging data... more We present an analysis of the L 1641 outflow region using broad-band and narrow-band imaging data at mid-infrared wavelengths from ISOCAM. We detect a total of 34 sources in the $7.65^{\prime}$ x $8.40^{\prime}$ region covered by the broad-band filters. Four of these sources have no reported detection in previous studies of the region. We find that the source previously identified as the near-IR counter-part to the IRAS detected point-source (IRAS 05338-0624) is not the brightest source in the wavelength region of the IRAS 12 \micron\ filter. We find instead that a nearby object (within the beam of IRAS and not detected at near-IR wavelengths) outshines all others sources in the area by a factor of $\sim$2. We submit that this source is likely to be the IRAS detected point source. A comparison of the near-IR (J-H vs H-K) and mid-IR (J-K vs [6.7 um]-[14 um]) color-color plots shows only four sources with excess emission at near-IR wavelengths, but atleast 85% of all sources show excess emission at mid-IR wavelengths. The CVF spectra suggest a range of evolutionary status in the program stars ranging from embedded YSOs to the young disks. When combined with optical and near-IR age estimates, these results show active current star-formation in the region that has been on-going for at least 2 Myr.
Iso Beyond the Peaks the 2nd Iso Workshop on Analytical Spectroscopy, Nov 1, 2000
273 NGC 7027: A COMPARISON OF ISOCAM CVF AND GROUND-BASED MID-INFARED CVF IMAGES Babar Au and Adi... more 273 NGC 7027: A COMPARISON OF ISOCAM CVF AND GROUND-BASED MID-INFARED CVF IMAGES Babar Au and Aditya Dayal Infrared Processing and Analysis Center, Caltech MS-100, 770 S. Wilson Ave., Pasadena, CA 91125 USA ABSTRACT We present a ...
ABSTRACT The effect of galactooligosaccharides (GOS) on infection caused by Listeria monocytogene... more ABSTRACT The effect of galactooligosaccharides (GOS) on infection caused by Listeria monocytogenes and levels of immunoglobulins (IgG and IgA) was studied in mice. β-Galactosidase extracted from native strains of Streptococcus thermophilus was used for GOS production. Seventy two mice were divided in to four groups; normal control group (NCG), pathogenic control group (PCG), and test groups 1 and 2. NCG and PCG were fed with standard rodent diet and the remaining groups were fed with standard diet supplemented with GOS (6% of diet). Six mice from each group were sacrificed on days 2, 5 and 8 post-challenge. Lower counts of L. monocytogenes were observed in the intestine, liver and spleen of groups fed with GOS. Feeding of GOS augmented the IgA (small intestine) and IgG (blood) concentration in mice. Findings of the study indicate that GOS have potential to modulate the immune system along with a protective effect against L. monocytogenes.
From diffuse interstellar cirrus to dense atomic and molecular clouds, from protostellar to post-... more From diffuse interstellar cirrus to dense atomic and molecular clouds, from protostellar to post-AGB envelopes, from supershells to supernovae remnants, the equatorial plane of our Galaxy provides the ideal laboratory to carry out investigations of the global and integrated ...
Efficiency of different methods for disruption of Streptococcus thermophilus cells, isolated from... more Efficiency of different methods for disruption of Streptococcus thermophilus cells, isolated from different dairy products, to release β-galactosidase and synthesis of GOS by extracted enzyme using whey supplemented with different concentrations of lactose as a substrate was studied. Unlike most other studies on GOS synthesis which used only one method of cell disruption and only few microbial strains, we compared five different cell disruption methods and used 30 strains of S. thermophilus in order to find out the most effective method and efficient strain for production of β-galactosidase. Appreciable amount of GOS (53.45 gL(-1)) was synthesized at a lactose concentration of 30 %, using enzyme (10 U mL(-1) of reaction medium), extracted from S. thermophilus within a very short incubation time of 5 h at a temperature of 40 °C and pH 6.8. S. thermophilus is heavily employed in the preparation of fermented dairy products but this study extends the use of this organism for the production of GOS, a potential prebiotic.
International Journal of Food Agriculture and Environment, 2010
Résumé/Abstract This study was conducted to determine the betacyanin, chlorophyll, total polyphen... more Résumé/Abstract This study was conducted to determine the betacyanin, chlorophyll, total polyphenol, antioxidant activity and leaf color parameters of three edible amaranth (Amaranthus tricolor L. subsp. mangostanus L. Allen) cultivars grown under five different shade levels. Red-fleshed leaf cultivars Rocto Alta and Altopati and a greenfleshed leaf cultivar SAT-072 were grown in the open field (no shading) and four selected shading regimes covered by one layer of white, one layer of black, two layers of black and four ...
Biomass yield and accumulations of betacyanin, chlorophyll, total polyphenol, and antioxidant act... more Biomass yield and accumulations of betacyanin, chlorophyll, total polyphenol, and antioxidant activity were evaluated growing red amaranth (Amaranthus tricolor L.) in spring season under five different shades made of white, blue, green, yellow, and black polyethylene, and non-shaded frame. Temperature and light intensity varied significantly (P< 0.05) under the different colored polyethylene shades, and these differences in microclimate are implicated for the variability in growth and accumulations of bioactive compounds. The ...
Journal of the Japanese Society for Horticultural Science, 2008
抄録 The total polyphenol content and antioxidant activity were compared in the leaves of seven red... more 抄録 The total polyphenol content and antioxidant activity were compared in the leaves of seven red amaranth (Amaranthus tricolor L.) cultivars. The effect of the sunlight level on the accumulation of total polyphenol content and antioxidant activity was also investigated by growing plants under full sunlight and shaded conditions. The total phenolic content and antioxidant activity differed among the cultivars studied, and leaves from the cultivar'Rocto Joba'and'Rocto Lal'had the highest phenolics and antioxidant activity, respectively. These ...
Abstract Seven cultivars of red amaranth (Amaranthus tricolor L.) with different leaf color were ... more Abstract Seven cultivars of red amaranth (Amaranthus tricolor L.) with different leaf color were evaluated for their betacyanin and chlorophyll content at two stages of development. The effects of food processing factors such as thermal treatment, light, H 2 O 2, and prolonged storage on betacyanin extracts were also examined. Betacyanin concentrations were highly correlated with the leaf color index and the cultivars (Rocto joba, BARI-1, and Altopati) with better color index tended to be associated with high betacyanin. Within a ...
Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627 MATTHEW A. AND ... more Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627 MATTHEW A. AND SHOBITA GREENHOUSE SATYAPAL Goddard Space Flight Center, Greenbelt, MD 20771 HOWARD A. SMITH Smithsonian Astrophysical Observatory, Cambridge, MA ...
ABSTRACT We present Herschel PACS spectra of Spitzer identified protostars in the Orion molecular... more ABSTRACT We present Herschel PACS spectra of Spitzer identified protostars in the Orion molecular clouds, obtained as part of the Herschel Orion Protostar Survey (HOPS). HOPS is a 200-hour Herschel open-time key program which will obtain PACS photometry at 70 and 160 microns for 286 protostars and PACS spectra from 55 to 210 microns for 36 protostars. We will use the Spitzer IRAC/MIPS and PACS photometry and SED modeling to characterize the envelope and disk properties and the evolutionary states of the Orion protostars. The spatial distribution and excitation states of the fine structure lines such as [OI] and [CII] and molecular lines such as H2O, OH and CO in the PACS spectra will be used to study the physical conditions and heating mechanisms in the envelopes and outflows in protostars. Complementing the PACS spectra with high resolution Spitzer IRS spectra, we will measure various flow rates in these protostellar systems and study the jet/outflow feedback onto the surrounding molecular material.
We present estimates for the effective temperature, luminosity, extinction and excess infrared em... more We present estimates for the effective temperature, luminosity, extinction and excess infrared emission for ~ 40 members of the young embedded cluster NGC 2024. These results were derived from infrared (2.15-2.35 mu m) spectroscopy and J, H, K and L(') \ photometry. We estimate the masses and ages of these stars by comparing their location on the H-R diagram to
Charles A. Poteet 1, S. Thomas Megeath 1, Dan M. Watson 2, Nuria Calvet 3, Ian S. Remming 2, Meli... more Charles A. Poteet 1, S. Thomas Megeath 1, Dan M. Watson 2, Nuria Calvet 3, Ian S. Remming 2, Melissa K. McClure 2, 3, Benjamin A. Sargent 4, William J. Fischer 1, Elise Furlan 5, Lori E. Allen 6, Jon E. Bjorkman 1, Lee Hartmann 3, James Muzerolle 4, John J. ...
ABSTRACT We present the Spitzer Space Telescope Infrared Spectrograph spectrum of the Orion A pro... more ABSTRACT We present the Spitzer Space Telescope Infrared Spectrograph spectrum of the Orion A protostar HOPS-68. The mid-infrared spectrum reveals crystalline substructure at 11.1, 16.1, 18.8, 23.6, 27.9, and 33.6 microns superimposed on the broad 9.7 and 18 micron amorphous silicate features; the substructure is well matched by the presence of the olivine end-member forsterite. Crystalline silicates are often observed as infrared emission features around the circumstellar disks of Herbig Ae/Be stars and T Tauri stars. However, this is the first unambiguous detection of crystalline silicate absorption in a cold, infalling, protostellar envelope. We estimate the crystalline mass fraction along the line-of-sight by first assuming that the crystalline silicates are located in a cold absorbing screen and secondly by utilizing radiative transfer models. The resulting crystalline mass fractions of 0.14 and 0.17, respectively, are significantly greater than the upper limit found in the interstellar medium (< 0.02-0.05). We propose that the amorphous silicates were annealed within the hot inner disk and/or envelope regions and subsequently transported outward into the envelope by entrainment in a protostellar outflow
We present an analysis of the L 1641 outflow region using broad-band and narrow-band imaging data... more We present an analysis of the L 1641 outflow region using broad-band and narrow-band imaging data at mid-infrared wavelengths from ISOCAM. We detect a total of 34 sources in the $7.65^{\prime}$ x $8.40^{\prime}$ region covered by the broad-band filters. Four of these sources have no reported detection in previous studies of the region. We find that the source previously identified as the near-IR counter-part to the IRAS detected point-source (IRAS 05338-0624) is not the brightest source in the wavelength region of the IRAS 12 \micron\ filter. We find instead that a nearby object (within the beam of IRAS and not detected at near-IR wavelengths) outshines all others sources in the area by a factor of $\sim$2. We submit that this source is likely to be the IRAS detected point source. A comparison of the near-IR (J-H vs H-K) and mid-IR (J-K vs [6.7 um]-[14 um]) color-color plots shows only four sources with excess emission at near-IR wavelengths, but atleast 85% of all sources show excess emission at mid-IR wavelengths. The CVF spectra suggest a range of evolutionary status in the program stars ranging from embedded YSOs to the young disks. When combined with optical and near-IR age estimates, these results show active current star-formation in the region that has been on-going for at least 2 Myr.
Iso Beyond the Peaks the 2nd Iso Workshop on Analytical Spectroscopy, Nov 1, 2000
273 NGC 7027: A COMPARISON OF ISOCAM CVF AND GROUND-BASED MID-INFARED CVF IMAGES Babar Au and Adi... more 273 NGC 7027: A COMPARISON OF ISOCAM CVF AND GROUND-BASED MID-INFARED CVF IMAGES Babar Au and Aditya Dayal Infrared Processing and Analysis Center, Caltech MS-100, 770 S. Wilson Ave., Pasadena, CA 91125 USA ABSTRACT We present a ...
ABSTRACT The effect of galactooligosaccharides (GOS) on infection caused by Listeria monocytogene... more ABSTRACT The effect of galactooligosaccharides (GOS) on infection caused by Listeria monocytogenes and levels of immunoglobulins (IgG and IgA) was studied in mice. β-Galactosidase extracted from native strains of Streptococcus thermophilus was used for GOS production. Seventy two mice were divided in to four groups; normal control group (NCG), pathogenic control group (PCG), and test groups 1 and 2. NCG and PCG were fed with standard rodent diet and the remaining groups were fed with standard diet supplemented with GOS (6% of diet). Six mice from each group were sacrificed on days 2, 5 and 8 post-challenge. Lower counts of L. monocytogenes were observed in the intestine, liver and spleen of groups fed with GOS. Feeding of GOS augmented the IgA (small intestine) and IgG (blood) concentration in mice. Findings of the study indicate that GOS have potential to modulate the immune system along with a protective effect against L. monocytogenes.
From diffuse interstellar cirrus to dense atomic and molecular clouds, from protostellar to post-... more From diffuse interstellar cirrus to dense atomic and molecular clouds, from protostellar to post-AGB envelopes, from supershells to supernovae remnants, the equatorial plane of our Galaxy provides the ideal laboratory to carry out investigations of the global and integrated ...
Efficiency of different methods for disruption of Streptococcus thermophilus cells, isolated from... more Efficiency of different methods for disruption of Streptococcus thermophilus cells, isolated from different dairy products, to release β-galactosidase and synthesis of GOS by extracted enzyme using whey supplemented with different concentrations of lactose as a substrate was studied. Unlike most other studies on GOS synthesis which used only one method of cell disruption and only few microbial strains, we compared five different cell disruption methods and used 30 strains of S. thermophilus in order to find out the most effective method and efficient strain for production of β-galactosidase. Appreciable amount of GOS (53.45 gL(-1)) was synthesized at a lactose concentration of 30 %, using enzyme (10 U mL(-1) of reaction medium), extracted from S. thermophilus within a very short incubation time of 5 h at a temperature of 40 °C and pH 6.8. S. thermophilus is heavily employed in the preparation of fermented dairy products but this study extends the use of this organism for the production of GOS, a potential prebiotic.
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