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| Registros recuperados: 56 | |
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| Domínguez Martínez, Pablo Alfredo. |
| La oxidación causada por patógenos es un problema de suma importancia en animales. Pollos mixtos, de un día de edad (Cobb 500, n=624) fueron asignados al azar a uno de seis tratamientos. Como testigo se utilizó una dieta base (T; 40 mg de VE kg-1 de alimento y 1.5% de ARG). El segundo tratamiento fue la dieta base + ARG (ARG; + 0.3%). El tercer tratamiento fue la dieta base + ARG + VE (AVE; + 0.3% y + 40 mg kg-1 de alimento). El cuarto tratamiento fue la dieta base + ARG + VC (AVC; + 0.3% + 1 g kg-1 de alimento). El quinto tratamiento fue la dieta base suplementada con VE + VC (VEC; + 40 mg + 1 g kg-1 de alimento). El sexto tratamiento fue la dieta base + ARG + VE + VC (AVEC; + 0.3% + 40 mg + 1 g kg-1 de alimento). Al día 14 todos los pollitos fueron... |
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Palavras-chave: Arginina; Vitamina E; Vitamina C; Eimeria; Pollo de engorda; Arginine; Vitamin E; Vitamin C; Broiler; Ganadería; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2351 |
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| Cavalcante,Maisa D.; Belisário,Celso M.; Oliveira,Daniel Emanuel C. de; Maia,Geisa Priscilla A. G.. |
| ABSTRACT One of the factors that hinder the usability of Cerrado fruits is their perishable nature, requiring industrial processing to ensure prolonged shelf life. This study aims to determine the optimal foaming agent for industrial processing of this fruit, and to evaluate the physicochemical characteristics and antioxidant activity of dried cagaita powder (Eugenia dysenterica DC) in foam layers at temperatures of 40, 50, 60, and 70 °C. The effectiveness of three foaming agents at various concentrations were tested, and suitable agents were identified based on a factorial analysis of density, expansion, and stability. The physicochemical characteristics of the powder, along with its vitamin A and C and total carotenoid content and antioxidant activity,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado fruits; Cagaita powder; Bioactive compounds; Antioxidant activity; Vitamin C; Vitamin A; Carotenoids; Foam layer drying. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300381 |
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| Yan,Jian; Jiao,Yan; Li,Xinmin; Jiao,Feng; Beamer,Wesley G.; Rosen,Cliff J.; Gu,Weikuan. |
| Humans and guinea pigs are species which are unable to synthesize ascorbic acid (vitamin C) because, unlike rodents, they lack the enzyme L-gulonolactone oxidase (Gulo). Although the phenotype of lacking vitamin C in humans, named scurvy, has long been well known, information on the impact of lacking Gulo on the gene expression profiles of different tissues is still missing. This knowledge could improve our understanding of molecular pathways in which Gulo may be involved. Recently, we discovered a deletion that includes all 12 exons in the gene for Gulo in the sfx mouse, characterized by spontaneous bone fractures. We report here the initial analysis of the impact of the Gulo gene deletion on the murine gene expression profiles in the liver, femur and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spontaneous fracture; Bone; Gene expression; L-gulonolactone oxidase; Vitamin C. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300004 |
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| Jiao,Yan; Zhang,Jifei; Yan,Jian; Stuart,John; Gibson,Griffin; Lu,Lu; Willaims,Robert; Wang,Yong Jun; Gu,Weikuan. |
| The aim of this study was to test the hypothesis that hepatic vitamin C (VC) levels in VC deficient mice rescued with high doses of VC supplements still do not reach the optimal levels present in wild-type mice. For this, we used a mouse scurvy model (sfx) in which the L-gulonolactone oxidase gene (Gulo) is deleted. Six age- (6 weeks old) and gender- (female) matched wild-type (WT) and sfx mice (rescued by administering 500 mg of VC/L) were used as the control (WT) and treatment (MT) groups (n = 3 for each group), respectively. Total hepatic RNA was used in triplicate microarray assays for each group. EDGE software was used to identify differentially expressed genes and transcriptomic analysis was used to assess the potential genetic regulation of Gulo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gene expression; L-gulonolactone oxidase; Liver; Oxidative stress; Vitamin C. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300004 |
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| Moretti,Celso L.; Araújo,Alessandra L.; Mattos,Leonora M.. |
| Collard greens (Brassica oleracea var. acephala) "Manteiga" were harvested in commercial fields in Brasilia, Brazil, aiming to evaluate different oxygen, carbon dioxide and nitrogen combinations to extend the shelf life of the fresh-cut product. After harvest, leaves were taken to the postharvest laboratory, selected for external blemishes and minimally processed (3 mm thick) inside a cold room (13±2°C). After processing, fresh-cut collard greens were stored under two controlled atmosphere (CA) conditions (3% O2, 4% CO2; 5% O2, 5% CO2/balance N2), and normal air (control), at 5°C (95±2% RH), for six days. Daily, minimally processed collard greens were evaluated for total vitamin C, total chlorophyll, total soluble solids content, and titratable acidity.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var; Acephala; Brix; Chlorophyll; Controlled atmosphere; Quality; Postharvest; Vitamin C. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000400021 |
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| Wszelaczyńska,Elżbieta; Szczepanek,Małgorzata; Pobereżny,Jarosław; Kazula,Maciej J. |
| ABSTRACT The nutritional value of carrot is determined by the content of total sugars and monosaccharides, carotenoids and vitamins, including vitamin C, in its roots. In 2009-2011, field experiments were carried out concerning the effect of biostimulating preparations applied during the carrot vegetation period on selected nutrients of its roots (total sugars, monosaccharides, carotenoids and vitamin C). Two biostimulants were foliarly applied in doses of 2 or 3 L ha-1 on various dates. Kelpak SL and Asahi SL: one, two or three applications; where, second and third applied at 2-week interval, additionally Kelpak SL: one application at 4-leaf phase, followed by additional application after 4 weeks. The field study was conducted in a randomized block design... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Ecklonia maxima; Seaweed; Carotenoids; Vitamin C. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000400451 |
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| Baudin Laurencin, F; Messager, J; Stephan, Gwendal. |
| Symptoms recalling a nutritional pathology and more precisely a process of lipid peroxydation were observed during the last years in seabass Dicentrarchus labrax and other fishes cultured in tropical marine condition, Ocyurus chrysurus and Lutjanus analis . They included dark coloration, skin ulceration, lethargy, anorexy, emaciation. Histological examinations showed hepatic fatty degenerative lesions, pancreatitis, muscular degeneration and retinal atrophy. Additional vitamins E and C in the food suppressed that pathological symptoms. The previously evoked clinical or histological signs were not achieved in spite of an increase of the level of hepatic, muscular or blood malondialdehyde and of the conjugated dienes of the perivisceral fat. In the same... |
| Tipo: Text |
Palavras-chave: Lutjanus analis; Ocyurus chrysurus; Dicentrarchus labrax; Pisces; Marine fish; Diseases; Nutrient deficiency; Vitamin C; Vitamin E; Vitamin deficiencies; Nutritional requirements; Dietary deficiencies; Deficiency diseases. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/1989/acte-1501.pdf |
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| HERBAS, Maria Shirley; SUZUKI, Hiroshi; 鈴木, 宏志. |
| Nutritional deficiencies are frequent in malaria-endemic areas. It seems that micronutrient antioxidants play an important role in malaria parasite’s proliferation. Thus, the effect of vitamin C deficiency on malaria infection was examined in mice. When vitamin C deficient mice, L-gulono-γ-lactone oxidase gene knockout mice which are unable to synthesize ascorbic acid, were infected with a lethal dose of Plasmodium berghei NK65-infected red blood cells, the knockout mice showed similar parasitemia kinetics and survival rates as wild-type mice. The results indicate that deficiency of vitamin C might not affect the development of the malaria parasite in mice. |
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Palavras-chave: Free radical; Malaria; Vitamin C. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3016 |
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| Lavens, P.; Sorgeloos, P.. |
| It is generally accepted, that a major constraint in the further development of marine fish and crustacean aquaculture, is the variable quality of eggs and larvae used for the hatchery-production of fry. Nonetheless, valid criteria to evaluate optimal egg quality have not been identified yet. Instead, particular indicators, are used, e.g. the fertilization and hatching rate, overall culture success during the first rearing period, etc., but these are not totally objective because hatchery-specific conditions may interfere. The biochemical composition of the egg may be one of the possible determinants of egg quality, which can be evaluated on a more objectie basis. In this respect, studied have been initiated to analyze in freshly-released eggs, the levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquaculture techniques; Biochemical composition; Crustacean culture; Eggs; Fatty acids; Fish culture; Hatcheries; Quality control; Vitamin C. |
| Ano: 1991 |
URL: http://www.vliz.be/imisdocs/publications/262328.pdf |
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| Merchie, G.; Lavens, P.; Verreth, J.; Ollevier, F.P.; Nelis, H.; De Leenheer, A.P.; Storch, V.; Sorgeloos, P.. |
| The effect of three dietary ascorbic acid (AA) concentrations, each applied via two feed types, on production characteristics and physiological condition of African catfish (<i>Clarius gariepinus</i>) larvae has been assessed in two 10-day culture trials. Three treatments received only <i>Artemia</i> nauplii enriched with an experimental emulsion containing 0, 10 or 20% ascorbyl palmitate (AP) and yielding 530, 1200 and 1600 µg AA g<sup>-1</sup> DW <i>Artemia</i> , respectively; the other three treatments were fed the same <i>Artemia</i> diets which were partially substituted by an artificial diet containing no vitamin C (ratio 20:80). No differences in survival could be observed: however, from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish larvae; Food organisms; Vitamin C; Clarias gariepinus. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2963 |
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| Merchie, G.; Lavens, P.; Sorgeloos, P.. |
| HPLC techniques were adapted and standardized for quantification of ascorbic acid (AA) and its derivates in both diets and target organisms. To assess the dietary needs for AA at start of exogenous feeding, the AA content in the various live diets currently used in aquaculture (algae, rotifers, <i>Artemia</i> ) was analyzed. Application of techniques for boosting vitamin C using ascorbyl palmitate as the source enabled the transfer of elevated levels (up to 2,500 µg AA/g DW) of bioactive vitamin C. Larvae of fish (<i>Clarias gariepinus, Dicentrarchus labrax, Scophthalmus maximus</i>), white shrimp (<i>Penaeus vannamei</i>) and prawn (<i>Macrobrachium rosenbergii</i>) were enriched via the live food chain.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crustacean larvae; Diets; Vitamin C. |
| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2962 |
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| Premuzic,Z; Palmucci,HE; Tamborenea,J; Nakama,M. |
| The addition of chlorine constitutes an economical disinfection method for closed, soil-less systems. Three quantities of sodium hypochlorite (0.55, 5.5 and 11 ppm) were applied to closed, soil-less greenhouse- grown lettuce (Lactuca sativa), to study the effect on its production (fresh weight and dry matter) and some commercial and nutritional quality factors (phytotoxicity, Vitamin C, nitrates). Sodium hypochlorite was weekly added within the nutrient solution, and the chemical properties (pH, EC and chlorides) of the recycled solution were measured. Damage to leaves was evaluated 15 days before harvest. Chlorination produced different effects regarding both production and quality. All treatments presented plants with excellent commercial weight,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorination; Lactuca sativa; Nitrates; Phytotoxicity; Vitamin C. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572007000100010 |
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| Sgavioli,S; Domingues,CHF; Santos,ET; Quadros,TCO de; Borges,LL; Garcia,RG; Louzada,MJQL; Boleli,IC. |
| Abstract This experiment was conducted to evaluate the effect of in-ovo ascorbic acid (AA) injection on the bone development of broilers submitted to heat stress during incubation and rearing. One thousand (1,000) Cobb(r)fertile broiler eggs were randomly distributed according to the weight into five incubators, with 200 eggs per incubator. The incubation treatments were: eggs not injected with AA and incubated at 37.5°C; eggs not injected with AA and incubated at 39°C; and eggs injected with 6 µg AA/100 µL water prior to incubation and incubated at 39ºC. The hatched birds were reared at three different house temperatures: cold, thermoneutral, or and hot. The high incubation temperature negatively influenced broilers' bone characteristics. The femur of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ash; Mineral density; Femoral bone strength; Tibia; Vitamin C. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100153 |
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| Registros recuperados: 56 | |
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