1
|
Catzeddu P, Fois S, Tolu V, Sanna M, Braca A, Vitangeli I, Anedda R, Roggio T. Quality Evaluation of Fresh Pasta Fortified with Sourdough Containing Wheat Germ and Wholemeal Semolina. Foods 2023; 12:2641. [PMID: 37509733 PMCID: PMC10378388 DOI: 10.3390/foods12142641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Pasta is a staple food in the Mediterranean diet, primarily manufactured with two essential ingredients, semolina and water; nowadays, it is often supplemented with functional ingredients. In this work, a sourdough obtained with wheat germ and wholemeal semolina was used, in order to improve sensorial and nutritional properties of fresh pasta, to prevent lipids oxidation, and to improve the shelf life. Three different formulations were prepared, a first one using semolina, a second one with raw wheat germ, wholemeal semolina, and semolina, and the last one with semolina and sourdough. The study highlighted the improved nutritional properties of pasta with sourdough (reduced phytic acid content, higher antioxidant activity and phenolic content). Proteins, ashes, dietary fibers, lipids, and tocols (vitamin E) increased in pasta with wheat germ and wholemeal semolina, and with sourdough. The amount of tocols decreased in pasta samples after cooking, except for the β-tocopherol in sourdough pasta, the amount of which remained high, surprisingly. Lipase and lipoxygenase enzymes likely decreased as an effect of the pasteurization process. The NMR analysis showed that lipid oxidation was higher in semolina pasta than in pasta with wheat germ, most likely due to the protective effect of antioxidants deriving from wheat germ.
Collapse
Affiliation(s)
- Pasquale Catzeddu
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| | - Simonetta Fois
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| | - Valentina Tolu
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| | - Manuela Sanna
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| | - Angela Braca
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| | - Ilaria Vitangeli
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| | - Roberto Anedda
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| | - Tonina Roggio
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero, Italy
| |
Collapse
|
2
|
Fois S, Piu PP, Sanna M, Roggio T, Catzeddu P. In Vivo and In Vitro Starch Digestibility of Fresh Pasta Produced Using Semolina-Based or Wholemeal Semolina-Based Liquid Sourdough. Foods 2021; 10:foods10102507. [PMID: 34681556 PMCID: PMC8536165 DOI: 10.3390/foods10102507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 12/04/2022] Open
Abstract
The use of wholemeal flour and sourdough fermentation in different food matrices has received considerable attention in recent years due to its resulting health benefits. In this study, a semolina-based and a wholemeal semolina-based sourdough were prepared and added to the formulation of gnocchetti-type fresh pasta. Four types of gnocchetti were made, using semolina plus semolina-based sourdough (SS), semolina plus wholemeal semolina-based sourdough (SWS), semolina alone (S), and semolina plus wholemeal semolina (WS). The latter two were used as controls. The digestibility of starch was studied both in vitro and in vivo, and the glycemic response (GR) and glycemic load (GL) were determined. Starch digestibility, both in vivo and in vitro, was higher in wholemeal semolina than semolina pasta and the resulting GR values (mg dL−1 min−1) were also higher (2209 and 2277 for WS and SWS; 1584 and 1553 for S and SS, respectively). The use of sourdough significantly reduced the rapidly digestible starch (RDS) content and increased the inaccessible digestible starch (IDS) content. The addition of sourdough to the formulation had no effect on the GR values, but led to a reduction of the GL of the pasta. These are the first data on the GR and GL of fresh pasta made with sourdough.
Collapse
|
3
|
Fois S, Campus M, Piu PP, Siliani S, Sanna M, Roggio T, Catzeddu P. Fresh Pasta Manufactured with Fermented Whole Wheat Semolina: Physicochemical, Sensorial, and Nutritional Properties. Foods 2019; 8:E422. [PMID: 31540522 PMCID: PMC6770218 DOI: 10.3390/foods8090422] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/12/2019] [Accepted: 09/16/2019] [Indexed: 01/22/2023] Open
Abstract
Fresh pasta (SP) was prepared by mixing semolina with liquid sourdough, whole wheat semolina based, and the effects of sourdough inclusion were evaluated against a control sample (CP) prepared using semolina and whole wheat semolina. Physicochemical, nutritional, and sensorial analyses were performed on pasteurized fresh pasta, before and after cooking. The optimum cooking time was not affected by whole wheat sourdough, whereas differences were found in color, firmness, and cooking loss. Changes of in vitro digested starch fractions in SP pasta were affected by a higher cooking loss. Overall, SP samples were characterized by improved nutraceutical features, namely higher content of free essential amino acids and phenolic compounds, lower phytic acid content, and higher antioxidant activity. Sensory analyses (acceptability and check-all-that-apply (CATA) tests) showed significantly higher scores for the SP, and the differences were enhanced when the consumers were informed about the product composition and how it was manufactured. Consumers checked for more positive sensory parameters for the SP than the CP.
Collapse
Affiliation(s)
- Simonetta Fois
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero (SS), Italy.
| | - Marco Campus
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero (SS), Italy.
| | | | - Silvia Siliani
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero (SS), Italy.
| | - Manuela Sanna
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero (SS), Italy.
| | - Tonina Roggio
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero (SS), Italy
| | - Pasquale Catzeddu
- Porto Conte Ricerche Srl, Località Tramariglio, 07041 Alghero (SS), Italy.
| |
Collapse
|
4
|
Sanna M, Fois S, Falchi G, Campus M, Roggio T, Catzeddu P. Effect of liquid sourdough technology on the pre-biotic, texture, and sensory properties of a crispy flatbread. Food Sci Biotechnol 2019; 28:721-730. [PMID: 31093429 PMCID: PMC6484046 DOI: 10.1007/s10068-018-0530-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 11/27/2018] [Accepted: 12/03/2018] [Indexed: 11/26/2022] Open
Abstract
The present study compared liquid sourdough technology with baker's yeast leavening when applied to the production of a semolina-based crispy flatbread. Following in vitro starch digestion, the results revealed the sourdough leavened flatbread to contain a lower percentage of rapidly digestible starch (16%), higher amounts of slowly digestible starch (27%) and inaccessible digestible starch (4.1%) compared with the baker's yeast leavened flatbread (20, 20, and 2.4%, respectively), making the former nutritionally healthier. The sourdough leavened bread was crispier, stiffer and more solid, as shown by texture analyses, although Raman spectroscopy revealed no differences in the crystallinity status of starch. The descriptive analyses show that the use of sourdough enhances the positive sensory traits, as rated by the consumer panel scores (6.08 vs. 5.56). In summary, the results indicate that the implementation of sourdough technology in the production of flat crispy breads could confer economic advantages to this product.
Collapse
Affiliation(s)
- Manuela Sanna
- Porto Conte Ricerche srl, Loc. Tramariglio, 07041 Alghero, SS Italy
| | - Simonetta Fois
- Porto Conte Ricerche srl, Loc. Tramariglio, 07041 Alghero, SS Italy
| | - Giovanni Falchi
- Porto Conte Ricerche srl, Loc. Tramariglio, 07041 Alghero, SS Italy
| | - Marco Campus
- Porto Conte Ricerche srl, Loc. Tramariglio, 07041 Alghero, SS Italy
| | - Tonina Roggio
- Porto Conte Ricerche srl, Loc. Tramariglio, 07041 Alghero, SS Italy
| | | |
Collapse
|
5
|
Melis R, Braca A, Mulas G, Sanna R, Spada S, Serra G, Fadda ML, Roggio T, Uzzau S, Anedda R. Effect of freezing and drying processes on the molecular traits of edible yellow mealworm. INNOV FOOD SCI EMERG 2018. [DOI: 10.1016/j.ifset.2018.06.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
6
|
Sanna R, Siliani S, Melis R, Loi B, Baroli M, Roggio T, Uzzau S, Anedda R. The role of fatty acids and triglycerides in the gonads of Paracentrotus lividus from Sardinia: Growth, reproduction and cold acclimatization. Mar Environ Res 2017; 130:113-121. [PMID: 28754521 DOI: 10.1016/j.marenvres.2017.07.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/30/2017] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
A detailed characterization of lipid extracts from gonads of P. lividus over a year has been performed combining GC and NMR measurements. For this purpose, sea urchins from two different Sardinian coastal areas were collected monthly. The results underlined a correlation between gonad fatty acids profiles and both water temperature and reproduction process. In particular, EPA and ARA appear to be the most altered fatty acids following seasonal changes. It is suggested that EPA could represent a biomarker of reproduction, reaching a content around 14% during gametogenesis, mainly due to an increase of the sn-1,3 position in TAGs. On the contrary, ARA seems to play a more important role in response to cold acclimatization, which is reflected in a modulation of ARA content in the sn-1,3 position in TAGs.
Collapse
Affiliation(s)
- Roberta Sanna
- Porto Conte Ricerche S. r. l. - S.P. 55 Porto Conte - Capo Caccia, Km 8.400, Loc. Tramariglio, 07041, Alghero, SS, Italy.
| | - Silvia Siliani
- Porto Conte Ricerche S. r. l. - S.P. 55 Porto Conte - Capo Caccia, Km 8.400, Loc. Tramariglio, 07041, Alghero, SS, Italy.
| | - Riccardo Melis
- Porto Conte Ricerche S. r. l. - S.P. 55 Porto Conte - Capo Caccia, Km 8.400, Loc. Tramariglio, 07041, Alghero, SS, Italy.
| | - Barbara Loi
- IMC - International Marine Centre, Loc. Sa Mardini, 09170, Torregrande, OR, Italy; University of Tuscia, Department of Ecological and Biological Sciences, Via S. Camillo de Lellis, 01100, Viterbo, VT, Italy.
| | - Maura Baroli
- IMC - International Marine Centre, Loc. Sa Mardini, 09170, Torregrande, OR, Italy.
| | - Tonina Roggio
- Porto Conte Ricerche S. r. l. - S.P. 55 Porto Conte - Capo Caccia, Km 8.400, Loc. Tramariglio, 07041, Alghero, SS, Italy.
| | - Sergio Uzzau
- Porto Conte Ricerche S. r. l. - S.P. 55 Porto Conte - Capo Caccia, Km 8.400, Loc. Tramariglio, 07041, Alghero, SS, Italy.
| | - Roberto Anedda
- Porto Conte Ricerche S. r. l. - S.P. 55 Porto Conte - Capo Caccia, Km 8.400, Loc. Tramariglio, 07041, Alghero, SS, Italy.
| |
Collapse
|
7
|
Siliani S, Melis R, Loi B, Guala I, Baroli M, Sanna R, Uzzau S, Roggio T, Addis MF, Anedda R. Influence of seasonal and environmental patterns on the lipid content and fatty acid profiles in gonads of the edible sea urchin Paracentrotus lividus from Sardinia. Mar Environ Res 2016; 113:124-133. [PMID: 26713559 DOI: 10.1016/j.marenvres.2015.12.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/30/2015] [Accepted: 12/01/2015] [Indexed: 06/05/2023]
Abstract
The influence of seasonal and environmental patterns on the lipid fraction of Paracentrotus lividus gonads was investigated. For this purpose, sea urchins were collected monthly over a year from two Sardinian coastal areas. Total lipids in gonads follow an annual cyclical trend, described by a sine wave curve, that it is more influenced by season than by growing area. The lowest lipid content in gonads corresponds to a high percentage of mature reproductive stages (i.e. winter season), independently of sampling area. A variation in total lipid content follows a change in photoperiod, while it is related to sea surface temperature. Multivariate analysis on fatty acid profiles of gonads, detected by gas chromatography, clusters the collected specimens mainly according to the sampling area, secondly according to the sites within the same sampling area and finally according to season.
Collapse
Affiliation(s)
- Silvia Siliani
- Porto Conte Ricerche S. r. l., S.P. 55 Porto Conte, Capo Caccia, Km 8.400, Loc. Tramariglio, Alghero, SS, Italy.
| | - Riccardo Melis
- Porto Conte Ricerche S. r. l., S.P. 55 Porto Conte, Capo Caccia, Km 8.400, Loc. Tramariglio, Alghero, SS, Italy.
| | - Barbara Loi
- IMC - International Marine Centre, Loc. Sa Mardini, 09170 Torregrande, OR, Italy.
| | - Ivan Guala
- IMC - International Marine Centre, Loc. Sa Mardini, 09170 Torregrande, OR, Italy.
| | - Maura Baroli
- IMC - International Marine Centre, Loc. Sa Mardini, 09170 Torregrande, OR, Italy.
| | - Roberta Sanna
- Porto Conte Ricerche S. r. l., S.P. 55 Porto Conte, Capo Caccia, Km 8.400, Loc. Tramariglio, Alghero, SS, Italy.
| | - Sergio Uzzau
- Porto Conte Ricerche S. r. l., S.P. 55 Porto Conte, Capo Caccia, Km 8.400, Loc. Tramariglio, Alghero, SS, Italy.
| | - Tonina Roggio
- Porto Conte Ricerche S. r. l., S.P. 55 Porto Conte, Capo Caccia, Km 8.400, Loc. Tramariglio, Alghero, SS, Italy.
| | - Maria Filippa Addis
- Porto Conte Ricerche S. r. l., S.P. 55 Porto Conte, Capo Caccia, Km 8.400, Loc. Tramariglio, Alghero, SS, Italy.
| | - Roberto Anedda
- Porto Conte Ricerche S. r. l., S.P. 55 Porto Conte, Capo Caccia, Km 8.400, Loc. Tramariglio, Alghero, SS, Italy.
| |
Collapse
|
8
|
|
9
|
Pisanu S, Pagnozzi D, Pes M, Pirisi A, Roggio T, Uzzau S, Addis MF. Differences in the peptide profile of raw and pasteurised ovine milk cheese and implications for its bioactive potential. Int Dairy J 2015. [DOI: 10.1016/j.idairyj.2014.10.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
10
|
Ghisaura S, Anedda R, Pagnozzi D, Biosa G, Spada S, Bonaglini E, Cappuccinelli R, Roggio T, Uzzau S, Addis MF. Impact of three commercial feed formulations on farmed gilthead sea bream (Sparus aurata, L.) metabolism as inferred from liver and blood serum proteomics. Proteome Sci 2014; 12:44. [PMID: 25342931 PMCID: PMC4200174 DOI: 10.1186/s12953-014-0044-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 07/31/2014] [Indexed: 11/10/2022] Open
Abstract
Background The zootechnical performance of three different commercial feeds and their impact on liver and serum proteins of gilthead sea bream (Sparus aurata, L.) were assessed in a 12 week feeding trial. The three feeds, named A, B, and C, were subjected to lipid and protein characterization by gas chromatography (GC) and liquid chromatography-tandem mass spectrometry (LC-MS/MS), respectively. Results Feed B was higher in fish-derived lipids and proteins, while feeds C and A were higher in vegetable components, although the largest proportion of feed C proteins was represented by pig hemoglobin. According to biometric measurements, the feeds had significantly different impacts on fish growth, producing a higher average weight gain and a lower liver somatic index in feed B over feeds A and C, respectively. 2D DIGE/MS analysis of liver tissue and Ingenuity pathways analysis (IPA) highlighted differential changes in proteins involved in key metabolic pathways of liver, spanning carbohydrate, lipid, protein, and oxidative metabolism. In addition, serum proteomics revealed interesting changes in apolipoproteins, transferrin, warm temperature acclimation-related 65 kDa protein (Wap65), fibrinogen, F-type lectin, and alpha-1-antitrypsin. Conclusions This study highlights the contribution of proteomics for understanding and improving the metabolic compatibility of feeds for marine aquaculture, and opens new perspectives for its monitoring with serological tests. Electronic supplementary material The online version of this article (doi:10.1186/s12953-014-0044-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Stefania Ghisaura
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Roberto Anedda
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Daniela Pagnozzi
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Grazia Biosa
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Simona Spada
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Elia Bonaglini
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Roberto Cappuccinelli
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Tonina Roggio
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Sergio Uzzau
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| | - Maria Filippa Addis
- Porto Conte Ricerche, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero, Italy
| |
Collapse
|
11
|
Melis R, Cappuccinelli R, Roggio T, Anedda R. Addressing marketplace gilthead sea bream (Sparus aurata L.) differentiation by 1H NMR-based lipid fingerprinting. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.05.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
12
|
Salvatore E, Pes M, Falchi G, Pagnozzi D, Furesi S, Fiori M, Roggio T, Addis MF, Pirisi A. Effect of whey concentration on protein recovery in fresh ovine ricotta cheese. J Dairy Sci 2014; 97:4686-94. [PMID: 24856986 DOI: 10.3168/jds.2013-7762] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 04/09/2014] [Indexed: 11/19/2022]
Abstract
Ricotta cheese, particularly the ovine type, is a typical Italian dairy product obtained by heat-coagulation of the proteins in whey. The aim of this work was to investigate the influence of whey protein concentration, obtained by ultrafiltration, on yield of fresh ovine ricotta cheese. Ricotta cheeses were obtained by thermocoagulation of mixtures with protein content of 1.56, 3.10, 4.16, and 7.09g/100g from the mixing of skim whey and ultrafiltered skim whey. A fat-to-protein ratio of 1.1 (wt/wt) was obtained for all mixtures by adding fresh cream. The initial mixtures, as well as the final ricotta cheeses, were analyzed for their composition and by SDS-PAGE. Protein bands were quantified by QuantityOne software (Bio-Rad, Hercules, CA) and identified by liquid chromatography-tandem mass spectrometry. Significant differences in the composition of the ricotta cheese were observed depending on protein concentration. Particularly, ricotta cheese resulting from the mixture containing 7.09g/100g of protein presented higher moisture (72.88±1.50g/100g) and protein (10.18±0.45g/100g) contents than that prepared from the mixture with 1.56g/100g of protein (69.52±1.75 and 6.70±0.85g/100g, respectively), and fat content was lower in this sample (12.20±1.60g/100g) compared with the other treatments, with mean values between 15.72 and 20.50g/100g. Each protein fraction presented a different behavior during thermocoagulation. In particular, the recovery of β-lactoglobulin and α-lactalbumin in the cheese increased as their content increased in the mixtures. It was concluded that concentrating ovine rennet whey improved the extent of heat-induced protein aggregation during the thermal coagulation process. This resulted in a better recovery of each protein fraction in the product, and in a consequent increase of ricotta cheese yield.
Collapse
Affiliation(s)
- E Salvatore
- Agris Sardegna, Department of Animal Science, Loc. Bonassai, 07040 Olmedo, Italy.
| | - M Pes
- Agris Sardegna, Department of Animal Science, Loc. Bonassai, 07040 Olmedo, Italy
| | - G Falchi
- Porto Conte Ricerche Srl, Tramariglio, 07041 Alghero, Italy
| | - D Pagnozzi
- Porto Conte Ricerche Srl, Tramariglio, 07041 Alghero, Italy
| | - S Furesi
- Agris Sardegna, Department of Animal Science, Loc. Bonassai, 07040 Olmedo, Italy
| | - M Fiori
- Agris Sardegna, Department of Animal Science, Loc. Bonassai, 07040 Olmedo, Italy
| | - T Roggio
- Porto Conte Ricerche Srl, Tramariglio, 07041 Alghero, Italy
| | - M F Addis
- Porto Conte Ricerche Srl, Tramariglio, 07041 Alghero, Italy
| | - A Pirisi
- Agris Sardegna, Department of Animal Science, Loc. Bonassai, 07040 Olmedo, Italy
| |
Collapse
|
13
|
Terova G, Pisanu S, Roggio T, Preziosa E, Saroglia M, Addis MF. Proteomic profiling of sea bass muscle by two-dimensional gel electrophoresis and tandem mass spectrometry. Fish Physiol Biochem 2014; 40:311-322. [PMID: 24057758 DOI: 10.1007/s10695-013-9855-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 08/24/2013] [Indexed: 06/02/2023]
Abstract
In this study, the proteome profile of European sea bass (Dicentrarchus labrax) muscle was analyzed using two-dimensional electrophoresis (2-DE) and tandem mass spectrometry with the aim of providing a more detailed characterization of its specific protein expression profile. A highly populated and well-resolved 2-DE map of the sea bass muscle tissue was generated, and the corresponding protein identity was provided for a total of 49 abundant protein spots. Upon Ingenuity Pathway Analysis, the proteins mapped in the sea bass muscle profile were mostly related to glycolysis and to the muscle myofibril structure, together with other biological activities crucial to fish muscle metabolism and contraction, and therefore to fish locomotor performance. The data presented in this work provide important and novel information on the sea bass muscle tissue-specific protein expression, which can be useful for future studies aimed to improve seafood traceability, food safety/risk management and authentication analysis. This work is also important for understanding the proteome map of the sea bass toward establishing the animal as a potential model for muscular studies.
Collapse
Affiliation(s)
- Genciana Terova
- Department of Biotechnology and Life Sciences (DBSV), University of Insubria, Via J. H. Dunant, 3, 21100, Varese, Italy,
| | | | | | | | | | | |
Collapse
|
14
|
Mulas G, Roggio T, Uzzau S, Anedda R. A new magnetic resonance imaging approach for discriminating Sardinian sheep milk cheese made from heat-treated or raw milk. J Dairy Sci 2013; 96:7393-403. [PMID: 24119804 DOI: 10.3168/jds.2013-6607] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 08/24/2013] [Indexed: 11/19/2022]
Abstract
The evaluation of milk heat treatment on dairy products via reliable analytical methods is a challenging issue that involves both industrial and fundamental research. We describe a new magnetic resonance imaging (MRI) protocol for discriminating Sardinian sheep milk cheese originating from heat-treated or raw milk. Thirty-six samples (18 pecorino cheeses manufactured from heat-treated milk and 18 Fiore Sardo cheeses made from raw milk) were investigated by means of MRI and bi-exponential signal decay analysis. The protocol is capable of discerning cheeses by virtue of the different distribution of the transversal (T2) relaxation time constant. Cheeses from heat-treated milk showed a significantly higher area fraction (≈70-80%), corresponding to the fast relaxing water protons (T2 ≈ 9 ms), compared with raw milk cheeses, whereas the opposite was observed for the long T2 (T2 ≈ 35 ms) proton population. The MRI protocol described is rapid and nondestructive, and it provides statistically significant discrimination between ewe milk cheeses made from heat-treated and raw milk.
Collapse
Affiliation(s)
- G Mulas
- Porto Conte Ricerche S.r.l., SP 55 Porto Conte/Capo Caccia Km 8.400, Loc Tramariglio 07041 Alghero (SS), Italy
| | | | | | | |
Collapse
|
15
|
Vinci P, Fois S, Parente E, Roggio T, Catzeddu P. A study on relationships between durum wheat semolina properties, technological mixing parameters and the properties of dough after mixing. Int J Food Sci Technol 2013. [DOI: 10.1111/ijfs.12247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paolo Vinci
- Porto Conte Ricerche Srl; Località Tramariglio 07041 Alghero Italy
| | - Simonetta Fois
- Porto Conte Ricerche Srl; Località Tramariglio 07041 Alghero Italy
| | - Eugenio Parente
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali; Università della Basilicata; 85100 Potenza Italy
- Istituto di Scienze dell'Alimentazione; CNR; 83100 Avellino Italy
| | - Tonina Roggio
- Porto Conte Ricerche Srl; Località Tramariglio 07041 Alghero Italy
| | | |
Collapse
|
16
|
Anedda R, Piga C, Santercole V, Spada S, Bonaglini E, Cappuccinelli R, Mulas G, Roggio T, Uzzau S. Multidisciplinary analytical investigation of phospholipids and triglycerides in offshore farmed gilthead sea bream (Sparus aurata) fed commercial diets. Food Chem 2013; 138:1135-44. [DOI: 10.1016/j.foodchem.2012.11.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 11/21/2012] [Accepted: 11/22/2012] [Indexed: 10/27/2022]
|
17
|
Fois S, Fadda C, Tonelli R, Sanna M, Urgeghe PP, Roggio T, Catzeddu P. Effects of the fermentation process on gas-cell size two-dimensional distribution and rheological characteristics of durum-wheat-based doughs. Food Res Int 2012. [DOI: 10.1016/j.foodres.2012.07.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
18
|
Pisanu S, Ghisaura S, Pagnozzi D, Falchi G, Biosa G, Tanca A, Roggio T, Uzzau S, Addis MF. Characterization of sheep milk fat globule proteins by two-dimensional polyacrylamide gel electrophoresis/mass spectrometry and generation of a reference map. Int Dairy J 2012. [DOI: 10.1016/j.idairyj.2011.05.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
19
|
Addis MF, Pisanu S, Preziosa E, Bernardini G, Pagnozzi D, Roggio T, Uzzau S, Saroglia M, Terova G. 2D DIGE/MS to investigate the impact of slaughtering techniques on postmortem integrity of fish filet proteins. J Proteomics 2012; 75:3654-64. [DOI: 10.1016/j.jprot.2012.04.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 03/27/2012] [Accepted: 04/17/2012] [Indexed: 02/05/2023]
|
20
|
Secchi N, Giunta D, Pretti L, García MR, Roggio T, Mannazzu I, Catzeddu P. Bioconversion of ovine scotta into lactic acid with pure and mixed cultures of lactic acid bacteria. ACTA ACUST UNITED AC 2012; 39:175-81. [DOI: 10.1007/s10295-011-1013-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Accepted: 06/25/2011] [Indexed: 11/27/2022]
Abstract
Abstract
Scotta is the main by-product in the making of ricotta cheese. It is widely produced in southern Europe and particularly in Italy where it represents a serious environmental pollutant due to its high lactose content. With the aim of evaluating whether scotta bioconversion into lactic acid can be considered as an alternative to its disposal, besides providing it with an added value, here the growth, fermentative performances, and lactic acid productions of pure and mixed cultures of Lactobacillus casei, Lactobacillus helveticus, and Streptococcus thermophilus were evaluated on ovine scotta-based media, without and with the addition of nutritional supplements. The outcomes indicate that ovine scotta can be utilized for the biotechnological production of lactic acid with yields up to 92%, comparable to those obtained on cheese-whey. Indeed, the addition of nutritional supplements generally improves the fermentative performances of lactic acid bacteria leading to about 2 g l−1 h−1 of lactic acid. Moreover, the use of mixed cultures for scotta bioconversion reduces the need for nutritional supplements, with no detrimental effects on the productive parameters compared to pure cultures. Finally, by using L. casei and S. thermophilus in pure and mixed cultures, up to 99% optically pure l-lactic acid can be obtained.
Collapse
Affiliation(s)
- Nicola Secchi
- grid.452739.e Porto Conte Ricerche Srl Località Tramariglio 07041 Alghero (SS) Italy
| | - Daniela Giunta
- grid.452739.e Porto Conte Ricerche Srl Località Tramariglio 07041 Alghero (SS) Italy
| | - Luca Pretti
- grid.452739.e Porto Conte Ricerche Srl Località Tramariglio 07041 Alghero (SS) Italy
| | - Mónica Ruiz García
- División Químico-Alimentaria CARTIF Centro Tecnológico, Parque Tecnológico de Boecillo Parcela 205 47151 Valladolid Spain
| | - Tonina Roggio
- grid.452739.e Porto Conte Ricerche Srl Località Tramariglio 07041 Alghero (SS) Italy
| | - Ilaria Mannazzu
- grid.11450.31 0000000120979138 Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari Università degli Studi di Sassari Viale Italia 39/A 07100 Sassari Italy
| | - Pasquale Catzeddu
- grid.452739.e Porto Conte Ricerche Srl Località Tramariglio 07041 Alghero (SS) Italy
| |
Collapse
|
21
|
Addis MF, Pisanu S, Ghisaura S, Pagnozzi D, Marogna G, Tanca A, Biosa G, Cacciotto C, Alberti A, Pittau M, Roggio T, Uzzau S. Proteomics and pathway analyses of the milk fat globule in sheep naturally infected by Mycoplasma agalactiae provide indications of the in vivo response of the mammary epithelium to bacterial infection. Infect Immun 2011; 79:3833-45. [PMID: 21690237 PMCID: PMC3165467 DOI: 10.1128/iai.00040-11] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 06/01/2011] [Indexed: 12/27/2022] Open
Abstract
Milk fat globules (MFGs) are vesicles released in milk as fat droplets surrounded by the endoplasmic reticulum and apical cell membranes. During formation and apocrine secretion by lactocytes, various amounts of cytoplasmic crescents remain trapped within the released vesicle, making MFGs a natural sampling mechanism of the lactating cell contents. With the aim of investigating the events occurring in the mammary epithelium during bacterial infection, the MFG proteome was characterized by two-dimensional difference gel electrophoresis (2-D DIGE), SDS-PAGE followed by shotgun liquid chromatography-tandem mass spectrometry (GeLC-MS/MS), label-free quantification by the normalized spectral abundance factor (NSAF) approach, Western blotting, and pathway analysis, using sheep naturally infected by Mycoplasma agalactiae. A number of protein classes were found to increase in MFGs upon infection, including proteins involved in inflammation and host defense, cortical cytoskeleton proteins, heat shock proteins, and proteins related to oxidative stress. Conversely, a strikingly lower abundance was observed for proteins devoted to MFG metabolism and secretion. To our knowledge, this is the first report describing proteomic changes occurring in MFGs during sheep infectious mastitis. The results presented here offer new insights into the in vivo response of mammary epithelial cells to bacterial infection and open the way to the discovery of protein biomarkers for monitoring clinical and subclinical mastitis.
Collapse
Affiliation(s)
- Maria Filippa Addis
- Porto Conte Ricerche Srl, S.P. 55 Porto Conte/Capo Caccia Km 8.400, Tramariglio, 07041 Alghero SS, Italy.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Biosa G, Addis MF, Tanca A, Pisanu S, Roggio T, Uzzau S, Pagnozzi D. Comparison of blood serum peptide enrichment methods by Tricine SDS-PAGE and mass spectrometry. J Proteomics 2011; 75:93-9. [PMID: 21757041 DOI: 10.1016/j.jprot.2011.06.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 05/30/2011] [Accepted: 06/25/2011] [Indexed: 11/18/2022]
Abstract
Characterisation of blood serum peptides can provide valuable information on physiological and pathological processes. However, the analysis of raw serum samples by MS results in the identification of a limited number of peptides. In order to improve sensitivity, many peptide enrichment methods have been proposed during the last ten years. Here, we present a comparison of fractionation methods aimed to simplify analysis of small proteins and peptides in blood serum, one of the most promising sources of putative biomarkers. Specifically, three methods based on ultrafiltration, differential precipitation, and peptide ligand libraries (ProteoMiner) were evaluated for the enrichment of peptides and low molecular weight proteins, as demonstrated by Tricine SDS-PAGE and subsequent LC-MS/MS (GeLC-MS/MS). As a result, differential solubilisation (DS) allowed the identification of the highest number of peptides. Moreover, the DS method enabled also the quantitative comparison of samples, producing fundamental information in biomarker discovery approaches.
Collapse
Affiliation(s)
- Grazia Biosa
- Porto Conte Ricerche Srl, Tramariglio, Alghero Sassari, Italy
| | | | | | | | | | | | | |
Collapse
|
23
|
Scano P, Anedda R, Melis MP, Dessi’ MA, Lai A, Roggio T. 1
H‐ and
13
C‐NMR Characterization of the Molecular Components of the Lipid Fraction of Pecorino Sardo Cheese. J AM OIL CHEM SOC 2011. [DOI: 10.1007/s11746-011-1797-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P. Scano
- Dipartimento di Scienze Chimiche, Università degli Studi di CagliariCittadella Universitaria di MonserratoS. S. 554‐Bivio per SestuMonserratoCagliari09042Italy
| | - R. Anedda
- Porto Conte Ricerche SrlS. P. 55 Porto Conte/Capo CacciaTramariglio‐AlgheroSS07041Italy
| | - M. P. Melis
- Dipartimento di Biologia Sperimentale, Sezione di Patologia SperimentaleUniversità degli Studi di Cagliari, Cittadella UniversitariaMonserratoCAItaly
| | - M. A. Dessi’
- Dipartimento di Biologia Sperimentale, Sezione di Patologia SperimentaleUniversità degli Studi di Cagliari, Cittadella UniversitariaMonserratoCAItaly
| | - A. Lai
- Dipartimento di Scienze Chimiche, Università degli Studi di CagliariCittadella Universitaria di MonserratoS. S. 554‐Bivio per SestuMonserratoCagliari09042Italy
| | - T. Roggio
- Porto Conte Ricerche SrlS. P. 55 Porto Conte/Capo CacciaTramariglio‐AlgheroSS07041Italy
| |
Collapse
|
24
|
Campus M, Bonaglini E, Cappuccinelli R, Porcu MC, Tonelli R, Roggio T. Effect of Modified Atmosphere Packaging on Quality Index Method (QIM) Scores of Farmed Gilthead Seabream (Sparus aurata L.) at Low and Abused Temperatures. J Food Sci 2011; 76:S185-91. [DOI: 10.1111/j.1750-3841.2011.02051.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
25
|
Tanca A, Pagnozzi D, Falchi G, Tonelli R, Rocca S, Roggio T, Uzzau S, Addis MF. Application of 2-D DIGE to formalin-fixed, paraffin-embedded tissues. Proteomics 2011; 11:1005-11. [DOI: 10.1002/pmic.201000353] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2010] [Revised: 12/01/2010] [Accepted: 12/10/2010] [Indexed: 11/10/2022]
|
26
|
Pisanu S, Ghisaura S, Pagnozzi D, Biosa G, Tanca A, Roggio T, Uzzau S, Addis MF. The sheep milk fat globule membrane proteome. J Proteomics 2010; 74:350-8. [PMID: 21147282 DOI: 10.1016/j.jprot.2010.11.011] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 11/24/2010] [Accepted: 11/29/2010] [Indexed: 02/07/2023]
Abstract
Milk fat globule membranes (MFGM) are three-layered structures that enclose fat droplets, and are composed by an internal monolayer of endoplasmic reticulum origin, surrounded by a bilayer derived from the apical membrane of the lactating cell. In this work, an optimized protein extraction method was applied to sheep MFGM, and extracts were subjected to SDS-PAGE separation followed by shotgun LC tandem mass spectrometry (GeLC-MS/MS) for identification and characterization. In total, 140 unique sheep MFGM proteins (MFGMPs) were identified. All protein identification data were subjected to Gene Ontology (GO) classification for localization and function. Moreover, the relative abundance of all identified MFGMPs was estimated by means of the normalized spectral abundance factor (NSAF) approach, and GO abundance classes were obtained. The data gathered in this work provide a detailed picture of the proteome expressed in healthy sheep MFGs, and lay the foundations for future studies on sheep lactation physiology and on its alterations in pathological conditions.
Collapse
|
27
|
Tanca A, Addis MF, Pagnozzi D, Cossu-Rocca P, Tonelli R, Falchi G, Eccher A, Roggio T, Fanciulli G, Uzzau S. Proteomic analysis of formalin-fixed, paraffin-embedded lung neuroendocrine tumor samples from hospital archives. J Proteomics 2010; 74:359-70. [PMID: 21147281 DOI: 10.1016/j.jprot.2010.12.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Revised: 12/01/2010] [Accepted: 12/03/2010] [Indexed: 10/18/2022]
Abstract
Hospital tissue repositories host an invaluable supply of diseased samples with matched retrospective clinical information. In this work, a recently optimized method for extracting full-length proteins from formalin-fixed, paraffin-embedded (FFPE) tissues was evaluated on lung neuroendocrine tumor (LNET) samples collected from hospital repositories. LNETs comprise a heterogeneous spectrum of diseases, for which subtype-specific diagnostic markers are lacking. Six archival samples diagnosed as typical carcinoid (TC) or small cell lung carcinoma (SCLC) were subjected to a full-length protein extraction followed by a GeLC-MS/MS analysis, enabling the identification of over 300 distinct proteins per tumor subtype. All identified proteins were categorized through DAVID software, revealing a differential distribution of functional classes, such as those involved in RNA processing, response to oxidative stress and ion homeostasis. Moreover, using spectral counting for protein abundance estimation and beta-binomial test as statistical filter, a list of 28 differentially expressed proteins was generated and submitted to pathway analysis by means of Ingenuity Pathway Analysis software. Differential expression of chromogranin-A (more expressed in TCs) and stathmin (more expressed in SCLCs) was consistently confirmed by immunohistochemistry. Therefore, FFPE hospital archival samples can be successfully subjected to proteomic investigations aimed to biomarker discovery following a GeLC-MS/MS label-free approach.
Collapse
|
28
|
Addis MF, Cappuccinelli R, Tedde V, Pagnozzi D, Viale I, Meloni M, Salati F, Roggio T, Uzzau S. Influence of Moraxella sp. colonization on the kidney proteome of farmed gilthead sea breams (Sparus aurata, L.). Proteome Sci 2010; 8:50. [PMID: 20939867 PMCID: PMC2964643 DOI: 10.1186/1477-5956-8-50] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 10/12/2010] [Indexed: 12/02/2022] Open
Abstract
Background Currently, presence of Moraxella sp. in internal organs of fish is not considered detrimental for fish farming. However, bacterial colonization of internal organs can affect fish wellness and decrease growth rate, stress resistance, and immune response. Recently, there have been reports by farmers concerning slow growth, poor feed conversion, and low average weight increase of fish farmed in offshore floating sea cages, often associated with internal organ colonization by Moraxella sp. Therefore, presence of these opportunistic bacteria deserves further investigations for elucidating incidence and impact on fish metabolism. Results A total of 960 gilthead sea breams (Sparus aurata, L.), collected along 17 months from four offshore sea cage plants and two natural lagoons in Sardinia, were subjected to routine microbiological examination of internal organs throughout the production cycle. Thirteen subjects (1.35%) were found positive for Moraxella sp. in the kidney (7), brain (3), eye (1), spleen (1), and perivisceral fat (1). In order to investigate the influence of Moraxella sp. colonization, positive and negative kidney samples were subjected to a differential proteomics study by means of 2-D PAGE and mass spectrometry. Interestingly, Moraxella sp. infected kidneys displayed a concerted upregulation of several mitochondrial enzymes compared to negative tissues, reinforcing previous observations following lipopolysaccharide (LPS) challenge in fish. Conclusions Presence of Moraxella sp. in farmed sea bream kidney is able to induce proteome alterations similar to those described following LPS challenge in other fish species. This study revealed that Moraxella sp. might be causing metabolic alterations in fish, and provided indications on proteins that could be investigated as markers of infection by Gram-negative bacteria within farming plants.
Collapse
|
29
|
Maddau L, Cabras A, Franceschini A, Linaldeddu BT, Crobu S, Roggio T, Pagnozzi D. Occurrence and characterization of peptaibols from Trichoderma citrinoviride, an endophytic fungus of cork oak, using electrospray ionization quadrupole time-of-flight mass spectrometry. Microbiology (Reading) 2009; 155:3371-3381. [PMID: 19574303 DOI: 10.1099/mic.0.030916-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A cork oak endophytic strain of Trichoderma citrinoviride, previously selected for its antagonistic potential against various fungal pathogens involved in oak decline, was screened for the production of bioactive secondary metabolites. From liquid culture a mixture of polypeptide antibiotics (peptaibols) belonging to the paracelsin family was isolated and characterized. This peptide mixture was purified by column chromatography and preparative TLC on silica gel, and separated by analytical HPLC. It was analysed by MALDI-TOF MS and nano-ESI-QTOF MS. Tandem mass experiments were performed to determine the amino acid sequences based on the fragmentation pattern of selected parent ions. The mixture comprised 20-residue peptides with C-terminal phenylalaninol and N-terminal acetylation. Twenty-eight amino acid sequences were identified, and amino acid exchanges were located in positions 6, 9, 12 and 17. Among them, seven sequences are new as compared to those reported in the database specifically for peptaibols and in the literature. In addition, we obtained experimental evidence suggesting the existence of non-covalent dimeric forms (homo- and hetero-) of the various peptaibol species. The peptide mixture showed strong antifungal activity toward seven important forest tree pathogens, and it was highly toxic in an Artemia salina (brine shrimp) bioassay. These results emphasize the cryptic role of endophytic fungi as a source of novel bioactive natural products and biocontrol agents.
Collapse
Affiliation(s)
- Lucia Maddau
- Dipartimento di Protezione delle Piante, Sezione di Patologia Vegetale, Università di Sassari, Via E. De Nicola 9, 07100 Sassari, Italy
| | - Annalisa Cabras
- Dipartimento di Protezione delle Piante, Sezione di Patologia Vegetale, Università di Sassari, Via E. De Nicola 9, 07100 Sassari, Italy
| | - Antonio Franceschini
- Dipartimento di Protezione delle Piante, Sezione di Patologia Vegetale, Università di Sassari, Via E. De Nicola 9, 07100 Sassari, Italy
| | - Benedetto T Linaldeddu
- Dipartimento di Protezione delle Piante, Sezione di Patologia Vegetale, Università di Sassari, Via E. De Nicola 9, 07100 Sassari, Italy
| | | | - Tonina Roggio
- Porto Conte Ricerche Srl, Tramariglio, Alghero, Italy
| | | |
Collapse
|
30
|
Sanguinetti AM, Secchi N, Del Caro A, Stara G, Roggio T, Piga A. Effectiveness of active and modified atmosphere packaging on shelf life extension of a cheese tart. Int J Food Sci Technol 2009. [DOI: 10.1111/j.1365-2621.2009.01943.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
31
|
|