LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 23

Search options

  1. Article ; Online: Two alternative multiplex PCRs for the identification of the seven species of anglerfish (Lophius spp.) using an end-point or a melting curve analysis real-time protocol.

    Castigliego, Lorenzo / Armani, Andrea / Tinacci, Lara / Gianfaldoni, Daniela / Guidi, Alessandra

    Food chemistry

    2014  Volume 166, Page(s) 1–9

    Abstract: Anglerfish (Lophius spp.) is consumed worldwide and is an important economic resource though its seven species are often fraudulently interchanged due to their different commercial value, especially when sold in the form of fillets or pieces. Molecular ... ...

    Abstract Anglerfish (Lophius spp.) is consumed worldwide and is an important economic resource though its seven species are often fraudulently interchanged due to their different commercial value, especially when sold in the form of fillets or pieces. Molecular analysis is the only possible mean to verify traceability and counteract fraud. We developed two multiplex PCRs, one end-point and one real-time with melting curve post-amplification analysis, which can even be run with the simplest two-channel thermocyclers. The two methods were tested on seventy-five reference samples. Their specificity was checked in twenty more species of those most commonly available on the market and in other species of the Lophiidae family. Both methods, the choice of which depends on the equipment and budget of the lab, provide a rapid and easy-to-read response, improving both the simplicity and cost-effectiveness of existing methods for identifying Lophius species.
    MeSH term(s) Animals ; Fishes ; Multiplex Polymerase Chain Reaction/methods ; Sensitivity and Specificity
    Language English
    Publishing date 2014-06-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2014.06.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: A Conventional Multiplex PCR Assay for the Detection of Toxic Gemfish Species (Ruvettus pretiosus and Lepidocybium flavobrunneum): A Simple Method To Combat Health Frauds.

    Giusti, Alice / Castigliego, Lorenzo / Rubino, Rossella / Gianfaldoni, Daniela / Guidi, Alessandra / Armani, Andrea

    Journal of agricultural and food chemistry

    2016  Volume 64, Issue 4, Page(s) 960–968

    Abstract: The meat of Ruvettus pretiosus and Lepidocybium flavobrunneum (gemfishes) contains high amounts of indigestible wax esters that provoke gastrointestinal disorders. Although some countries have banned the sale of these species, mislabeling cases have been ...

    Abstract The meat of Ruvettus pretiosus and Lepidocybium flavobrunneum (gemfishes) contains high amounts of indigestible wax esters that provoke gastrointestinal disorders. Although some countries have banned the sale of these species, mislabeling cases have been reported in sushi catering. This work developed a simple conventional multiplex PCR, which discriminates the two toxic gemfishes from other potentially replaced species, such as tunas, cod, and sablefish. A common degenerate forward primer and three species-specific reverse primers were designed to amplify cytochrome oxidase subunit I (COI) gene regions of different lengths (479, 403, and 291 bp) of gemfishes, tunas, and sablefish, respectively. A primer pair was designed to amplify a fragment (193 bp) of the cytb gene of cod species. Furthermore, a primer pair targeting the 16S rRNA gene was intended as common positive control (115 bp). The method developed in this study, by producing the expected amplicon for all of the DNA samples tested (reference and commercial), provides a rapid and reliable response in identifying the two toxic species to combat health frauds.
    MeSH term(s) Animals ; DNA Primers/genetics ; Fish Proteins/genetics ; Food Contamination/analysis ; Multiplex Polymerase Chain Reaction/methods ; Perciformes/genetics ; Seafood/analysis
    Chemical Substances DNA Primers ; Fish Proteins
    Language English
    Publishing date 2016-02-03
    Publishing country United States
    Document type Evaluation Studies ; Journal Article
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/acs.jafc.5b04899
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Serum responsiveness to recombinant bovine somatotropin in buffalo: a three-month lactation study using an acid-stripping ELISA for screening.

    Castigliego, Lorenzo / Tinacci, Lara / Armani, Andrea / Boselli, Carlo / Grifoni, Goffredo / Mazzi, Marco / Guidi, Alessandra

    Drug testing and analysis

    2016  Volume 9, Issue 4, Page(s) 646–656

    Abstract: The misuse of recombinant bovine somatotropin (rbST) to increase milk yield involves buffalo not just cows. Screening methods to identify rbST-treated cattle have already been proposed. However, there have been no studies on prolonged periods with a high ...

    Abstract The misuse of recombinant bovine somatotropin (rbST) to increase milk yield involves buffalo not just cows. Screening methods to identify rbST-treated cattle have already been proposed. However, there have been no studies on prolonged periods with a high number of animals. In this study, we developed a new enzyme-linked immunosorbent assay (ELISA) to measure the serum responsiveness towards rbST, based on an acid-stripping procedure and relatively simple integral calculation dilution curves. We also applied the analysis to 640 serum and 96 milk samples collected from 16 buffalo treated with rbST and 16 controls, over a period of approximately three months. Its suitability as a screening method, in compliance with EU law, was also assessed. A bi-factorial approach was also evaluated, including the measurement of insulin-like growth factor 1 concentration in serum. Results showed that our ELISA could be used on its own for screening purposes, without the need to assess other biomarkers. Copyright © 2016 John Wiley & Sons, Ltd.
    MeSH term(s) Animals ; Buffaloes/blood ; Buffaloes/physiology ; Cattle ; Enzyme-Linked Immunosorbent Assay/methods ; Female ; Growth Hormone/analysis ; Growth Hormone/blood ; Insulin-Like Growth Factor I/analysis ; Lactation ; Limit of Detection ; Milk/chemistry ; Substance Abuse Detection/methods
    Chemical Substances Insulin-Like Growth Factor I (67763-96-6) ; Growth Hormone (9002-72-6)
    Language English
    Publishing date 2016-06-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 2462336-2
    ISSN 1942-7611 ; 1942-7603
    ISSN (online) 1942-7611
    ISSN 1942-7603
    DOI 10.1002/dta.1994
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: A LC-MS-MS method to detect recombinant bovine somatotropin misuse in buffalos

    Castigliego, Lorenzo / Andrea Armani / Goffredo Grifoni / Marco Mazzi / Carlo Boselli / Alessandra Guidi / Riccardo Donzelli / Alessandro Saba

    Analytical and bioanalytical chemistry. 2016 July, v. 408, no. 18

    2016  

    Abstract: Recombinant bovine somatotropin (rbST) is a peptide hormone used to increase milk yield in cows and buffalos. In Europe, its use has been banned. However, rbST is sometimes illegally included in zootechnical practices for profit purposes, undermining the ...

    Abstract Recombinant bovine somatotropin (rbST) is a peptide hormone used to increase milk yield in cows and buffalos. In Europe, its use has been banned. However, rbST is sometimes illegally included in zootechnical practices for profit purposes, undermining the fair trade and the law prescriptions. For this reason, efficient and reliable analytical techniques are required to contrast rbST misuse. A few LC-MS-MS methods have been developed to detect, in cow serum, methyonil-rbST, one of the two main rbST forms available on the market. The other form, which is widespread, is identical to the most abundant variant of bovine somatotropin (bST) and differs from the buffalo somatotropin for one amino acid in the N-terminus. For this reason, it is technically possible to distinguish both rbST forms in serum of buffalos. In this work, we describe a novel LC-MS-MS-based method, capable to quantify, with a high sensitivity and selectivity, the methyonil-rbST and the other bST-identical recombinant form in buffalo serum, previously purified using a solid-phase extraction procedure. The method was internally validated and used to analyse 152 serum samples, collected from eight buffalos administered with rbST for a period of 3 months, according to conventional protocols. The obtained results confirmed the suitability of the method in the detection of illegal hormonal treatments. Graphical abstract ᅟ
    Keywords amino acids ; blood serum ; buffaloes ; cows ; liquid chromatography ; markets ; milk yield ; solid phase extraction ; somatotropin ; tandem mass spectrometry ; Europe
    Language English
    Dates of publication 2016-07
    Size p. 4917-4926.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    ISSN 1618-2642
    DOI 10.1007/s00216-016-9578-9
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  5. Article ; Online: Pentaplex PCR as screening assay for jellyfish species identification in food products.

    Armani, Andrea / Giusti, Alice / Castigliego, Lorenzo / Rossi, Aurelio / Tinacci, Lara / Gianfaldoni, Daniela / Guidi, Alessandra

    Journal of agricultural and food chemistry

    2014  Volume 62, Issue 50, Page(s) 12134–12143

    Abstract: Salted jellyfish, a traditional food in Asian Countries, is nowadays spreading on the Western markets. In this work, we developed a Pentaplex PCR for the identification of five edible species (Nemopilema nomurai, Rhopilema esculentum, Rhizostoma pulmo, ... ...

    Abstract Salted jellyfish, a traditional food in Asian Countries, is nowadays spreading on the Western markets. In this work, we developed a Pentaplex PCR for the identification of five edible species (Nemopilema nomurai, Rhopilema esculentum, Rhizostoma pulmo, Pelagia noctiluca, and Cotylorhiza tuberculata), which cannot be identified by a mere visual inspection in jellyfish products sold as food. A common degenerated forward primer and five specie-specific reverse primers were designed to amplify COI gene regions of different lengths. Another primer pair targeted the 28SrRNA gene and was intended as common positive reaction control. Considering the high level of degradation in the DNA extracted from acidified and salted products, the maximum length of the amplicons was set at 200 bp. The PCR was developed using 66 reference DNA samples. It gave successful amplifications in 85.4% of 48 ready to eat products (REs) and in 60% of 30 classical salted products (CPs) collected on the market.
    MeSH term(s) Animals ; DNA Primers/genetics ; Polymerase Chain Reaction/methods ; RNA, Ribosomal, 28S/genetics ; Scyphozoa/classification ; Scyphozoa/genetics ; Seafood/analysis
    Chemical Substances DNA Primers ; RNA, Ribosomal, 28S
    Language English
    Publishing date 2014-12-17
    Publishing country United States
    Document type Evaluation Studies ; Journal Article
    ZDB-ID 241619-0
    ISSN 1520-5118 ; 0021-8561
    ISSN (online) 1520-5118
    ISSN 0021-8561
    DOI 10.1021/jf504654b
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: What is inside the jar? Forensically informative nucleotide sequencing (FINS) of a short mitochondrial COI gene fragment reveals a high percentage of mislabeling in jellyfish food products

    Armani, Andrea / Tinacci, Lara / Giusti, Alice / Castigliego, Lorenzo / Gianfaldoni, Daniela / Guidi, Alessandra

    Food research international. 2013 Dec., v. 54, no. 2

    2013  

    Abstract: The jellyfish belonging to the Rhizostomeae order are a typical Asian seafood and are nowadays also marketed in the Western countries. The jellyfish species used for food cannot be identified due to the loss of the morphological characteristics during ... ...

    Abstract The jellyfish belonging to the Rhizostomeae order are a typical Asian seafood and are nowadays also marketed in the Western countries. The jellyfish species used for food cannot be identified due to the loss of the morphological characteristics during processing. In this work, a pre-extraction treatment consisting of desalting under running water for 48h, followed by incubation in 400mM EDTA solution for 1h, was developed for products containing high concentration of salts. Moreover, considering the DNA degradation observed in both classical (CPs) and ready to eat (RE) commercial samples, five sets of primers for the amplification of fragments with different lengths belonging to the mitochondrial COI gene were designed and used to obtain the sequences from 54 reference specimens and 70 market samples. A phylogenetic analysis was then performed using the neighbor-joining method. It was found that a fragment of 142bp was enough informative to allow identification at the species level. The results showed that most of the products were made of Nemopilema nomurai (94% of RE and 45.5% of CPs). The analysis permitted to uncover an alarming level of mislabeling which reaches 79% for CPs and 100% for ready-to-eat products.
    Keywords DNA ; EDTA (chelating agent) ; Scyphozoa ; genes ; markets ; phylogeny ; ready-to-eat foods ; salts ; seafoods ; species identification ; water
    Language English
    Dates of publication 2013-12
    Size p. 1383-1393.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1111695-x
    ISSN 0963-9969
    ISSN 0963-9969
    DOI 10.1016/j.foodres.2013.10.003
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  7. Article ; Online: A LC-MS-MS method to detect recombinant bovine somatotropin misuse in buffalos.

    Castigliego, Lorenzo / Armani, Andrea / Grifoni, Goffredo / Mazzi, Marco / Boselli, Carlo / Guidi, Alessandra / Donzelli, Riccardo / Saba, Alessandro

    Analytical and bioanalytical chemistry

    2016  Volume 408, Issue 18, Page(s) 4917–4926

    Abstract: Recombinant bovine somatotropin (rbST) is a peptide hormone used to increase milk yield in cows and buffalos. In Europe, its use has been banned. However, rbST is sometimes illegally included in zootechnical practices for profit purposes, undermining the ...

    Abstract Recombinant bovine somatotropin (rbST) is a peptide hormone used to increase milk yield in cows and buffalos. In Europe, its use has been banned. However, rbST is sometimes illegally included in zootechnical practices for profit purposes, undermining the fair trade and the law prescriptions. For this reason, efficient and reliable analytical techniques are required to contrast rbST misuse. A few LC-MS-MS methods have been developed to detect, in cow serum, methyonil-rbST, one of the two main rbST forms available on the market. The other form, which is widespread, is identical to the most abundant variant of bovine somatotropin (bST) and differs from the buffalo somatotropin for one amino acid in the N-terminus. For this reason, it is technically possible to distinguish both rbST forms in serum of buffalos. In this work, we describe a novel LC-MS-MS-based method, capable to quantify, with a high sensitivity and selectivity, the methyonil-rbST and the other bST-identical recombinant form in buffalo serum, previously purified using a solid-phase extraction procedure. The method was internally validated and used to analyse 152 serum samples, collected from eight buffalos administered with rbST for a period of 3 months, according to conventional protocols. The obtained results confirmed the suitability of the method in the detection of illegal hormonal treatments. Graphical abstract ᅟ.
    MeSH term(s) Animals ; Buffaloes/blood ; Cattle/genetics ; Chromatography, High Pressure Liquid/methods ; Chromatography, High Pressure Liquid/veterinary ; Growth Hormone/blood ; Growth Hormone/genetics ; Reproducibility of Results ; Sensitivity and Specificity ; Substance Abuse Detection/methods ; Substance Abuse Detection/veterinary ; Tandem Mass Spectrometry/methods ; Tandem Mass Spectrometry/veterinary
    Chemical Substances Growth Hormone (9002-72-6) ; sometribove (PBK5EQG5CQ)
    Language English
    Publishing date 2016-05-05
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 201093-8
    ISSN 1618-2650 ; 0016-1152 ; 0372-7920
    ISSN (online) 1618-2650
    ISSN 0016-1152 ; 0372-7920
    DOI 10.1007/s00216-016-9578-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Multiplex conventional and real-time PCR for fish species identification of Bianchetto (juvenile form of Sardina pilchardus), Rossetto (Aphia minuta), and Icefish in fresh, marinated and cooked products

    Armani, Andrea / Castigliego, Lorenzo / Tinacci, Lara / Gianfaldoni, Daniela / Guidi, Alessandra

    Food chemistry. 2012 July 1, v. 133, no. 1

    2012  

    Abstract: A conventional and a realtime multiplex PCR were developed to detect fraudulent substitutions of Bianchetto (juvenile form of Sardina philcardus) and Rossetto (Aphia minuta) with Icefish (Neosalanx spp.), which show similar morphological characteristics. ...

    Abstract A conventional and a realtime multiplex PCR were developed to detect fraudulent substitutions of Bianchetto (juvenile form of Sardina philcardus) and Rossetto (Aphia minuta) with Icefish (Neosalanx spp.), which show similar morphological characteristics. Since it is the major by-catch species, Engraulis encrasicolus was also included in the analytical procedure. A common reverse primer and forward species-specific primer were designed on the mitochondrial cytochrome b gene to amplify sequences of different lengths by conventional PCR. Specific peaks were therefore also provided after melting temperature analysis in real-time PCR, thus enabling each species to be clearly differentiated. The two PCR methods were validated on fresh and processed products after preparing four typical dishes: two marinades (from raw or lightly boiled fish), a pasta sauce, and batter-fried fish cakes. All samples were correctly identified, although there was some DNA degradation after processing.
    Keywords DNA ; Engraulis encrasicolus ; Sardina pilchardus ; cooked foods ; cytochrome b ; fish ; fish cakes ; marinating ; melting point ; nucleotide sequences ; pasta ; polymerase chain reaction ; sauces ; taxonomy
    Language English
    Dates of publication 2012-0701
    Size p. 184-192.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2011.12.076
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  9. Article: A rapid PCR–RFLP method for the identification of Lophius species

    Armani, Andrea / Castigliego, Lorenzo / Tinacci, Lara / Gandini, Gabriele / Gianfaldoni, Daniela / Guidi, Alessandra

    European food research & technology. 2012 Aug., v. 235, no. 2

    2012  

    Abstract: The seven Anglerfish species, which belong to the genus Lophius, have a different value on the market, worldwide. If whole fishes can be identified by their morphological characteristics, they become indistinguishable when prepared or processed. In this ... ...

    Abstract The seven Anglerfish species, which belong to the genus Lophius, have a different value on the market, worldwide. If whole fishes can be identified by their morphological characteristics, they become indistinguishable when prepared or processed. In this study, a rapid method based on polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) was developed for the authentication of the seven Lophius species, using a cytochrome b gene fragment of 566 bp. After a genus-specific PCR, a fast digestion with the restriction enzyme BfaI, followed by agarose gel electrophoresis, allowed a clear species identification by producing specific restriction patterns. The total time required was as low as 6 h, DNA extraction included. The method was then used to analyse 48 commercial samples, whose phylogenetic analysis confirmed the PCR–RFLP response at 100 %. Results showed that mislabelling occurs on the market regardless the kind of processing.
    Keywords DNA ; Lophius ; cytochrome b ; digestion ; enzymes ; fish ; gel electrophoresis ; genes ; market value ; markets ; phylogeny ; polymerase chain reaction ; rapid methods ; taxonomy
    Language English
    Dates of publication 2012-08
    Size p. 253-263.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 1359456-4
    ISSN 1431-4630 ; 1438-2377
    ISSN 1431-4630 ; 1438-2377
    DOI 10.1007/s00217-012-1754-3
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Article: Mislabeling of an “unlabelable” seafood sold on the European market: The jellyfish

    Armani, Andrea / D’Amico, Priscilla / Castigliego, Lorenzo / Sheng, Gan / Gianfaldoni, Daniela / Guidi, Alessandra

    Food control. 2012 Aug., v. 26, no. 2

    2012  

    Abstract: The jellyfish is a popular seafood in South-East Asia. It can also be found throughout Europe in many Chinese shops, which despite being well-organized from a commercial perspective, often disregard rules on product traceability. Therefore because ... ...

    Abstract The jellyfish is a popular seafood in South-East Asia. It can also be found throughout Europe in many Chinese shops, which despite being well-organized from a commercial perspective, often disregard rules on product traceability. Therefore because jellyfish has still not been officially defined by the European Legislation on Food Hygiene, we performed a survey on fifty-six jellyfish products sold on the Italian market. This was done by assessing label compliance with European law and with the new Chinese Food Safety Law of 2009. Our survey found many incongruences and shortfalls including the presence of a trade name referring to vegetables or a lack of an unequivocal specification of ingredients. Focus is therefore needed on the possible hazards associated with the consumption of jellyfish products. In addition, regulations need adjusting in order to create more transparent marketing and sales practices.
    Keywords Scyphozoa ; compliance ; food law ; food sanitation ; ingredients ; markets ; sales ; seafoods ; surveys ; traceability ; trade ; vegetables
    Language English
    Dates of publication 2012-08
    Size p. 247-251.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1027805-9
    ISSN 0956-7135
    ISSN 0956-7135
    DOI 10.1016/j.foodcont.2012.01.059
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

To top