Evaluation of 2-alkylcyclobutanones in irradiated cured pork products during vacuum-packed storage     

Zanardi E  Battaglia A  Ghidini S  Conter M  Badiani A  Ianieri A 《Journal of agricultural and food chemistry》2007,55(10):4264-4270

The 2-Alkylcyclobutanones (2-ACBs) content was determined in three Italian cured pork products (salame Milano, coppa, and pancetta) irradiated at different targeted irradiation doses (2, 5, and 8 kGy) during vacuum-packed storage. Among 2-ACBs, three different compounds were investigated, namely, 2-dodecylcyclobutanone, 2-tetradecylcyclobutanone, and 2-(tetradec-5'-enyl)cyclobutanone. 2-ACBs were absent from the nonirradiated samples, whereas their content increased with irradiation dose. Their presence was recorded occasionally at 2 kGy and constantly at higher irradiation doses (5 and 8 kGy). The plot of 2-ACBs content against targeted irradiation doses showed an exponential relationship. The effect of vacuum-packed storage time on the 2-ACBs content was dependent on the irradiation dose. During vacuum-packed storage for up to 60 days, the 2-ACBs content remained unchanged in the cured pork products irradiated at 2 and 5 kGy, whereas a significant increase was observed in the pork products irradiated at 8 kGy.  相似文献   

A revised description of Gyrodactylus cichlidarum Paperna, 1968 (Gyrodactylidae) from the Nile tilapia, Oreochromis niloticus niloticus (Cichlidae), and its synonymy with G. niloticus Cone, Arthur et Bondad-Reantaso, 1995     

García-Vásquez A  Hansen H  Shinn AP 《Folia parasitologica》2007,54(2):129-140

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Mini‐cutting technique application in Corymbia and Eucalyptus: effects of mini‐tunnel use across seasons of the year     

de Lima  Marllos Santos  Araujo  Maristela Machado  Berghetti  Álvaro Luís Pasquetti  Aimi  Suelen Carpenedo  Costella  Claudia  Griebeler  Adriana Maria  Somavilla  Luiza Michelon  dos Santos  Osmarino Pires  dos Reis Teixeira Valente  Brígida Maria 《New Forests》2022,53(1):161-179

New Forests - The forestry sector has been able to sustainably satisfy the increasing global demand for forest products, thereby positively impacting the economy, while mitigating climate change....  相似文献   

The conservation of the endangered Mediterranean common dolphin (Delphinus delphis): Current knowledge and research priorities     

Adriana Vella  Sinéad Murphy  Joan Giménez  Renaud de Stephanis  Barbara Mussi  Joseph G. Vella  Kamel Larbi Doukara  Daniela Silvia Pace 《水产资源保护:海洋与淡水生态系统》2021,31(Z1):110-136

1. Preservation of endangered species is now recognized as a relevant component of regional and global conservation actions achieved through the maintenance of the remaining populations in a favourable conservation status. The Mediterranean common dolphin (Delphinus delphis) is listed as an Endangered subpopulation in the International Union for Conservation of Nature Red List, with declining numbers in some of the areas where it has been studied for numerous years. Prey depletion, fisheries bycatch, pollution, health risks, and climate change are among the recognized threats that the species is facing in the region.
2. The existing national, regional, and international legislation pertinent to Mediterranean countries should aid greater science–policy–management integration and support innovative research and monitoring towards effective conservation. The challenges inherent in studying the pelagic D. delphis should not preclude the use of long-term, year-round, multiplatform surveys, side by side with the latest molecular tools, which aid our understanding of its populations' genetic diversity, resistance to diseases, and resilience in a semi-enclosed fast-changing sea.
3. Addressing the multiplicity of problems confronting the species requires collaborative effort at all levels to share and merge resources, data, and expertise more efficiently. In this review, we provide an overview of the current knowledge on the Mediterranean common dolphin, the main threats, and knowledge gaps that are priorities for addressing its conservation, while providing clear recommendations for effectively safeguarding the species and its habitat at both local and regional levels.

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Effects of Artemisia annua and Foeniculum vulgare on chickens highly infected with Eimeria tenella (Phylum Apicomplexa)     

Liviu Dr?gan  Adriana Gy?rke  Jorge FS Ferreira  Ioan A Pop  Ioan Dunca  Maria Dr?gan  Viorica Mircean  Iosif Dan  Vasile Cozma 《Acta veterinaria Scandinavica》2014,56(1):22

Background

Intensive poultry production systems depend on chemoprophylaxis with anticoccidial drugs to combat infection. A floor-pen study was conducted to evaluate the anticoccidial effect of Artemisia annua and Foeniculum vulgare on Eimeria tenella infection. Five experimental groups were established: negative control (untreated, unchallenged); positive control (untreated, challenged); a group medicated with 125 ppm lasalocid and challenged; a group medicated with A. annua leaf powder at 1.5% in feed and challenged; and a group treated with the mixed oils of A. annua and Foeniculum vulgare in equal parts, 7.5% in water and challenged. The effects of A. annua and oil extract of A. annua + F. vulgare on E. tenella infection were assessed by clinical signs, mortality, fecal oocyst output, faeces, lesion score, weight gain, and feed conversion.

Results

Clinical signs were noticed only in three chickens from the lasalocid group, six from the A. annua group, and nine from the A. annua + F. vulgare group, but were present in 19 infected chickens from the positive control group. Bloody diarrhea was registered in only two chickens from A. annua group, but in 17 chickens from the positive control group. Mortality also occurred in the positive control group (7/20). Chickens treated with A. annua had a significant reduction in faecal oocysts (95.6%; P = 0.027) and in lesion score (56.3%; P = 0.005) when compared to the positive control. At the end of experiment, chickens treated with A. annua leaf powder had the highest body weight gain (68.2 g/day), after the negative control group, and the best feed conversion (1.85) among all experimental groups.

Conclusions

Our results suggest that A. annua leaf powder (Aa-p), at 1.5% of the daily diet post-infection, can be a valuable alternative for synthetic coccidiostats, such as lasalocid.  相似文献   

Higher feeding diets effects on age and liveweight gain at puberty in crossbred Nelore × Hereford heifers   总被引：1，自引：1，他引：0  

Júlio Otávio Jardim Barcellos  Gabriel Ribas Pereira  Eduardo Antunes Dias  Concepta McManus  Leonardo Canellas  Mari Lourdes Bernardi  Adriana Tarouco  Ênio Rosa Prates 《Tropical animal health and production》2014,46(6):953-960

This study was conducted to determine the age and liveweight at puberty of 120 crossbred beef heifers submitted to four diets to achieve predetermined weight gains (kg/day): 0.5 (G500; n?=?32), 0.75 (G750; n?=?32), 1.0 (G1000; n?=?29), and 1.25 (G1250; n?=?27). Animals were classified depending on their level of crossing between Nelore (N) and Hereford (H): 25%N-75%H, 37.5%N-63.5%H, 43.7%N-56.7%H, 50%N-50%H, and 75%N-25%H. Reproductive evaluation was performed at the beginning and at the end of the experimental period by ultrasonography and hormone analysis. The average age and liveweight at puberty were 388.0?±?1.9 days and 331.4?±?1.3 kg, respectively. Animals from the 25%N-75%H group reached puberty earlier than heifers from other genetic groups supplemented with G1250 diet (P?<?0.05). Heifers with higher degree of Nelore (75%N-25%H) fed with G1000 diet showed estrus 42 days prior to mating, but only 57 % reached puberty at mating (P?<?0.05). Heifers with follicles of higher diameter reached puberty (P?<?0.05) earlier. Higher average daily weight gain showed a positive effect on follicular diameter and IGF-I level at puberty (P?<?0.01). Concentrations of GH were lower in heifers fed G1250 compared to G1000 diet (P?<?0.05). There was a significant interaction between nutritional level and insulin levels at puberty (P?<?0.01). We demonstrated the relationship between IGF-I and average daily gain on the onset of puberty in heifers. In conclusion, heifers submitted to the higher feeding level showed a higher follicular diameter and were younger at puberty.  相似文献   

Effects of antiproteolytic agents on corneal epithelial viability and matrix metalloproteinase‐2 and metalloproteinase‐9 activity in alkali‐burned corneas of rats     

Dunia Y. Trujillo Piso  Alexandre P. Ribeiro  Miguel L. Silva  Patrícia J. Guimarães  Adriana Morales  Bianca C. Martins  Ivan M. Padua  Roberta Renzo  Alexandre L. Andrade  Ricardo R. Uscátegui  José L. Laus 《Veterinary ophthalmology》2014,17(1):23-31

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Phaseolus vulgaris L. Leaves Increase Short-Chain Fatty Acid (SCFA) Production,Ameliorating Early Metabolic Alterations     

Becerril-Campos  Adriana Araceli  Ocampo-Anguiano  Perla Viridiana  Mondragón-Jacobo  Candelario  Escobar-García  Konisgmar  Camacho-Barrón  Mariela  Anaya-Loyola  Miriam Aracely  Feregrino-Perez  Ana Angélica  García-Gasca  Teresa  Ahumada-Solórzano  Santiaga Marisela 《Plant foods for human nutrition (Dordrecht, Netherlands)》2022,77(3):421-426

Plant Foods for Human Nutrition - High-fat/high-fructose diets promote early metabolic disorders in weight and lipid and glucose metabolism. Bioactive compounds such as polyphenols and fiber...  相似文献   

Evaluating Binary Sorption of Phenol/Aniline fromAqueous Solutions onto Granular Activated Carbon and Hypercrosslinked Polymeric Resin (MN200)     

César Valderrama  Joan I. Barios  Adriana Farran  José Luis Cortina 《Water, air, and soil pollution》2010,210(1-4):421-434

Sorption equilibrium of phenol and aniline onto the granular activated carbon and hyperreticulated un-functionalized polymeric resin (MN200) was investigated in single and binary component aqueous systems. Higher loading was obtained for aniline than phenol onto both sorbents, which is probably due to hydrophobic difference between both solutes and the greater electronic density of the aromatic ring of the aniline. Granular activated carbon reported larger uptake than resin MN200 for both solutes, which may be attributed to the better physical properties of the granular activated carbon, for instance, larger surface area. The experimental sorption could be properly described by the Langmuir and Freundlich isotherms. Five models for predicting the binary equilibrium sorption isotherm were compared in order to determine the best fit model to correlate binary experimental data: the extended Langmuir isotherm with and without a constant interaction factor, a simplified model based on the single equilibrium factors, the empirical extended Freundlich isotherm and the modified extended Langmuir equation, which considers the synergistic interactions between sorbate–sorbate and not only the competition between them defined by the extended Langmuir model. The modified extended Langmuir model provides the best agreement between predicted and experimental data indicating that the synergistic interactions between solutes play an important role in the binary phenol/aniline sorption system.  相似文献   

Phosphorus Fractions Transformation in Sediments Before and After Cyanobacterial Bloom: Implications for Reduction of Eutrophication Symptoms in Dam Reservoir     

Adriana Anna Trojanowska  Katarzyna Izydorczyk 《Water, air, and soil pollution》2010,211(1-4):287-298

In order to observe the spatial phosphorus (P) fractions transformations in sediments in relation to bacterial abundance and enzyme hydrolysing organic P-alkaline phosphatase (APA), samples from 35 stations from eutrophic Sulejow Reservoir were taken in spring after flood and in summer after cyanobacterial bloom breakdown. The results show pronounced fluctuations: decrease of average total P in sediments, despite organic matter delivery after cyanobacterial bloom, in parallel with increase of labile P (8.3%) and Ca-bounded P (16.6%) fractions and decline of organic P fraction (28.5%). Higher alkaline activity in sediments in the spring delivered nutrients to water column and supported cyanobacterial bloom development during the summer. Positive correlation between APA and organic P (r?=?0.37, p?<?0.01, n?=?70) and negative with labile inorganic P (r?=??0.44, p?<?0.01, n?=?70) in sediments proved significant role of the APA in phosphorus transformation in sediments and internal loading in the reservoir. During summer, APA was significantly related to bacterial number (r?=?0.36, p?<?0.01, n?=?35) and bacterial abundance was correlated to organic matter content (r?=?0.36, p?<?0.01, n?=?35). Such pattern of temporal variations of P transformation in sediments indicates order of solutions for enhancement of recultivation effects of eutrophic dam reservoirs: (1) reduction of organic matter supply in spring and (2) sediment inactivation during summer.  相似文献