Search results for "meat"

Comparison of Different Processing Methods to Prepare Poly(lactid acid)–Hydrotalcite Composites

2013

The effect of the compounding method on the morphology and on the properties of poly(lactic acid) (PLA)-hydrotalcite (HT) composites was studied. Moreover, the influence of two different kinds of HT - organically modified (OM-HT) and unmodified (U-HT) - and their concentration was evaluated. The composites were prepared using either a single screw extruder (SSE), a counter rotating twin-screw compounder (TSC) or a corotating twin-screw extruder (TSE). The prepared materials were characterized by scanning electron microscopy, gel permeation chromatography (GPC) analysis, mechanical and rheological measurements. The results indicated that the best morphology, i.e., particles dimension and dis…

Suzuki polycondensation with a hairpin monomer.

2009

Two straight monomers were subjected to an AA/BB-type Suzuki polycondensation with a hairpin-shaped 1,8-anthrylene monomer as the counterpart leading to a novel polyarylene which should have the preferred conformation of a folded chain. The molar masses were determined by gel permeation chromatography and dynamic light scattering and found to be M(w) = 14,000 and M(n) = 7,000. MALDI-TOF MS analysis of a fraction provides a fingerprint of the step-growth nature of this polymerization.

1981

The dynamical region of the measured calibration curves is investigated using the results of the theory published previously. The kinetic constants of the flow-equilibrium are calculated from the measurements according to two different models for a spontaneous polymer diffusion of the transported P-mer from sol into gel of the Phase Distribution Chromatography (PDC)-column. The corresponding lateral concentration profiles in the gel are found by analytical integration of Fick's second law under the corresponding boundaries. An energetic model of this flow-equilibrium is stated, giving the activation enthalpy and -entropy of the rediffusion of the polymer from gel into sol after some retarda…

Main pathologies causing confiscation of equine livestock intended for human consumption

2018

The horse is a herbivorous animal that is used for various purposes, one of them is the production of meat intended for human consumption. Worldwide, horse meat production is led by Asia, leaving Europe in third place. Spain is not a country with a great tradition of consumption of this meat, even so, 18,275 farms are dedicated to it, sacrificing 52,908 horses per year. Specifically, 6,368 horses are slaughtered approximately in a year in the Valencian Community. The objective of the present study is to determine, through antemortem and postmortem inspection, the causes of the main seizures produced in equine livestock destined for human consumption, recognizing the lesions and taking the p…

Food traditions and consumer preferences for cured meats: Role of information in geographical indications

2021

Abstract Growth and development are two economic concepts that should go hand in hand. In a specific territory, the search for sustainable development is intertwined with the objectives of private operators but also with the public ones of collective well-being. As we know from the economic literature, the presence of information asymmetries leads to market failure as sustainability in the production of food products determines positive externalities that are not adequately remunerated. In this work some evolutionary trends in the demand for cured meats are analyzed, highlighting the relevant innovations introduced by sustainable consumption. Faced with this evolution of demand, with consum…

La place de la viande dans le modèle alimentaire français

2008

The main objective of this article is to examine the consumption of meat in the French dietary pattern. In particular, we attempted to identify the current structure and evolution in the consumption of meat-based products, the sociological distribution of the meat-based consumption, and the culinary systems of food association/substitution in which it occurs. In this aim, we analyzed the individual data of consumption stemming from nutritional surveys performed by the CRÉDOC in 1999 and 2003, as well as the recent European data about the national indigenous consumption of meats. Both samples included 1,500 representative individuals of the French adult population (quota method) who reported…

Photoinduced DNA damage efficiency and cytotoxicity of novel viologen linked pyrene conjugates.

2010

Novel viologen linked pyrene conjugates permeate cells efficiently and exhibit spacer length dependent DNA damage and cytotoxicity upon photoexcitation.

A TaqMan-based real-time PCR assay for the specific detection and quantification ofLeuconostoc mesenteroidesin meat products

2007

A new real-time PCR procedure was developed for the specific detection and quantification of Leuconostoc mesenteroides in meat products. It is a TaqMan assay based on 23S rRNA gene targeted primers and probe. Specificity was evaluated using purified DNA from 132 strains: 102 lactic acid bacteria (LAB), including 57 reference strains and 46 food isolates, belonging to genus Leuconostoc and related genera, and 30 non-LAB strains. Quantification was linear over at least 5 log units using both serial dilutions of purified DNA and calibrated cell suspensions from Leuconostoc mesenteroides ssp. dextranicum CECT 912T. This assay was able to detect at least five genomic equivalents, using purified …

Staphylococcal food poisoning case and molecular analysis of toxin genes in Staphylococcus aureus strains isolated from food in Sicily, Italy.

2014

A case of staphylococcal food poisoning was observed in two individuals of the same family after consumption of primosale, a semiripened sheep cheese produced in Sicily. Staphylococcus aureus isolated from the cheese produced enterotoxin C (SEC) and carried both the enterotoxin C (sec) and the toxic shock syndrome toxin (tsst-1) gene. Following this case, an extensive survey was conducted on 971 food samples (raw milk, cheese, meat, and food preparations). S. aureus was detected in 102 of 971 food samples, from all types of food with the exception of ricotta cheese. The tsst-1 gene was present in 42% of the strains, either alone or in combination with other toxin genes. The enterotoxin C ge…

PCR-based procedures for detection and quantification of Staphylococcus aureus and their application in food.

2006

Aims:  To evaluate the specificity of nuc targeted primers for PCR detection of Staphylococcus aureus in different food matrices and to establish a RTQ-PCR procedure suitable for the routine detection and quantification of this pathogen in food. Methods and Results:  Specificity of nuc targeted primers (Pri1–Pri2 and the newly designed RTQ-PCR primers) was tested on a total of 157 strains of genetically confirmed identity, including reference and food isolates. PCR detection on artificially inoculated beef samples by DNA extraction using a DNeasy Tissue Kit (Qiagen GmhH, Hilden, Germany) showed a sensitivity value around 103 CFU g−1. The two RTQ-PCR systems, incorporating SYBR-Green I and T…