Ion chromatographic determination of chloride in mustard sauces.     

E López Agüero  N Bosch Bosch  C Barrera Vázquez  B López Ruiz 《Journal of agricultural and food chemistry》1999,47(11):4682-4685

A new, simple, precise, and rapid ion chromatography (IC) method has been developed to determine chloride in mustard sauces using a mixture of phthalic acid, acetone, and water adjusted to pH 5.0 as eluent. Conductometric detection was carried out. The retention time for chloride was 1.5 min. Linearity was obtained up to a concentration level of 100 mg/L NaCl. The method was statistically evaluated for accuracy and precision after being used to assay the chloride from mustard sauces. Within the same samples, the chloride levels obtained by IC were compared with the sodium concentrations quantified by atomic absorption spectrophotometry.  相似文献   

Levels of circulating plasma immune complexes after thiacetarsamide treatment in dogs naturally infected with Dirofilaria immitis.     

J M Molina  A Ruiz  O Ferrer  M C Mu?oz  J Orós  M Morales 《The Veterinary record》1999,144(18):506-507

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Histological alterations in gills of shrimp Litopenaeus vannamei in low‐salinity waters under different stocking densities: Potential relationship with nitrogen compounds          下载免费PDF全文

Marcela G. Fregoso‐López  María S. Morales‐Covarrubias  Miguel A Franco‐Nava  Javier Ramírez‐Rochín  Juan F Fierro‐Sañudo  Jesús T Ponce‐Palafox  Federico Páez‐Osuna 《Aquaculture Research》2017,48(12):5854-5863

Two experimental modules with different stocking densities (M1 = 70 and M2 = 120 shrimp /m²) were examined weekly over a culture cycle in tanks with low‐salinity water (1.9 g/L) and zero water exchange. Results showed survival rates of 87.7 and 11.9% in M1 and M2, respectively. Water temperature, pH, dissolved oxygen, electrical conductivity and chlorophyll a were not significantly (p > .05) different between modules. In contrast, the concentrations of nitrogen compounds were significantly (p < .05) different between modules, except nitrite‐N (M2 were 2.31 ± 1.38 mg/L N‐TAN, 0.18 ± 0.49 mg/L N‐NO₂^? and 6.83 ± 6.52 mg/L N‐NO₃^?; in M1: 0.97 ± 0.73 mg/L N‐TAN, 0.05 ± 0.21 mg/L N‐NO₂^? and 0.63 ± 0.70 mg/L N‐NO₃^?). When waters of both modules reached higher levels of ammonia and nitrite, histological alterations were observed in gills. The histological alterations index (HAI) was higher in M2 (5‐112) than in M1 (2‐22).  相似文献   

Selecting and ranking areas for conservation of Aegla (Crustacea: Decapoda: Anomura) in southern South America integrating biogeography,phylogeny and assessments of extinction risk     

Georgina Tumini  Federico Giri  Vernica Williner  Pablo A. Collins  Juan J. Morrone 《水产资源保护:海洋与淡水生态系统》2019,29(5):693-705

Mechanisms of glyphosate resistance and response to alternative herbicide‐based management in populations of the three Conyza species introduced in southern Spain          下载免费PDF全文

Ignacio Amaro‐Blanco  Pablo Tomás Fernández‐Moreno  María Dolores Osuna‐Ruiz  Fernando Bastida  Rafael De Prado 《Pest management science》2018,74(8):1925-1937

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Designing a Score-Based Method for the Evaluation of the Nutritional Quality of the Gluten-Free Bakery Products and their Gluten-Containing Counterparts     

Federico Morreale  Donato Angelino  Nicoletta Pellegrini 《Plant foods for human nutrition (Dordrecht, Netherlands)》2018,73(2):154-159

Gluten-free (GF) products are consumed both by individuals with celiac disease and by an increasing number of people with no specific medical needs. Although the technological quality of GF products has been recently improved, their nutritional quality is still scarcely addressed. Moreover, the few published studies report conflicting results, mostly because the information from product nutrition facts is the only considered factor. The aim of the present study was to develop a score-based method for the nutritional evaluation of 134 packaged Italian GF bakery products and to compare it with that of 162 matched gluten-containing (GC) food items. The score included the information from the nutrition facts and the presence/absence of some nutritionally relevant components in the ingredients list. Results indicated an overall low nutritional quality of the considered GF bakery products. Additionally, with the sole exception of GF bread substitutes, there was no difference in nutritional quality between GF and equivalent GC bakery products. Future research and development of GF bakery products may take advantage of this scoring method, as it may represent an easy approach to evaluate their nutritional quality. The present findings do not justify the consumption of packaged GF bakery products by people without any specific medical needs.  相似文献   

Science mapping approach to analyze the research evolution on precision agriculture: world,EU and Italian situation     

Federico Pallottino  Marcello Biocca  Pierfrancesco Nardi  Simone Figorilli  Paolo Menesatti  Corrado Costa 《Precision Agriculture》2018,19(6):1011-1026

The relevance of precision agriculture produced a growth of the related literature over the years. However, a structured analysis of the published material is still missing. Thus, this study attempts to analyze the global scientific output of precision agriculture researches published during the period 2000–2016. By using a science mapping approach, mainly based on the application of network analysis tools, it was possible to investigate pivotal aspects of this research field such as publication trends, research topics and their geographical distribution. Using the Scopus database 17,756 scientific publications were retrieved from the chosen period. The number of publications increased after 2006, highlighting the vibrancy of the field. By authoring 35% of the publications, U.S.A. and China were the most active knowledge producer countries. Moreover, the generation of time resolved maps allowed us to identify agriculture engineering, computer science and agriculture studies as three main research areas characterizing precision agriculture panorama. The paper discusses the distribution of these topics at global level, among European countries and in Italy. Overall, this analysis represents the first holistic view of precision agriculture research providing valuable information for farmers, policy makers and researchers.  相似文献   

Cannibalism among <Emphasis Type="Italic">Lithodes santolla</Emphasis> (Molina 1782) juveniles: effect of stocking density,stage and molt condition     

M. Paula Sotelano  Gustavo A. Lovrich  Federico Tapella 《Aquaculture International》2016,24(4):1025-1037

Losses of king crabs (deaths) in massive rearing conditions are frequently attributed to cannibalism. As several factors could influence cannibalism intensity during culture, the aim of the present study was to determine the effect of molt condition, stage and density on cannibalism among Lithodes santolla juveniles. Comparisons between intermolt and molt conditions and between C1 and C2 stages during intermolt were performed at three densities (6, 12 and 18 individuals per flask; that is equivalent to 236, 472 and 708 individuals m^?2). After 16 days of juvenile coexistence, cannibalism (injured + dead) was higher during molting (33.9 ± 4.5 %) than intermolt (21.7 ± 3.9 %), even though only 36 % of crabs had molted. Although cannibalism was similar in C1 and C2 stages, the proportion of dead animals was higher by a factor of three in C1 stage, probably due to the fact that animals reach the first juvenile stage with low energetic reserves, after the lecithotrophic larval development. Density was the main factor influencing cannibalism in our experiments. Higher densities promoted higher deaths, while agonistic interactions evidenced by injured crabs remained constant. Walking appendages were lost more often than chelipeds during first agonistic encounters. We recommend the use of intermediate densities (450 crabs m^?2 at most), the early detection of exuviae and the sorting of crabs after molting, for L. santolla rearing.  相似文献   

Quantitative trait loci (QTLs) identification and the transmission of resistance to powdery mildew in apricot     

Juan Alfonso Salazar  Mohamed-Amine Batnini  Neila Trifi-Farah  David Ruiz  Pedro Martínez-Gómez  Manuel Rubio 《Euphytica》2016,207(2):245-254

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Effect of nitrogen fertilization on yield and quality of durum wheat cultivated in northern Italy and their interaction with different soils and growing seasons     

Federico Marinaccio  Amedeo Reyneri 《Journal of plant nutrition》2016,39(5):643-654

Durum wheat in temperate regions can lead to yields with higher technological quality and stability compared to Mediterranean areas. The aim of this study was to determine the effects of nitrogen (N fertilization on grain yield and quality, in different pedo-climatic conditions of temperate areas. Field experiments were conducted in two sites (sandy-loam and silty-clay-loam) in Northern-West Italy for three years: five different N rates, two different types of fertilizers (ammonium nitrate, nutritional activator, slow-release fertilizer) were compared considering yield, protein content and yellowberry. N fertilizer rate had a more consistent effect on protein than yield; the response was affected by soil texture and rainfall during the growing season. The use of different types of fertilizer seem to play a minor role. The management of N fertilization must consider mainly the effect on quality parameters of N rates and rainfall during the growing season and their interaction with soil texture.  相似文献