0000000000080540
AUTHOR
Settanni L.
Utilizzo del pied de cuve fortificato per la fermentazione spontanea di vini rossi di qualità
La fermentazione spontanea è un processo biologico incontrollato durante il quale molti lieviti e/o batteri potrebbero aumentare rapidamente in concentrazioni tali incidere negativamente sulla qualità del prodotto finale. A tal proposito, al fine di ottimizzare la crescita di lieviti con buone attitudini enologiche, si utilizza il metodo “pied de cuve”. Questa tecnica enologica è in grado di realizzare in una determinata massa di mosto dal volume ridotto, una fermentazione alcolica con un ceppo di lievito opportunamente inoculato o con ceppi di lieviti indigeni, naturalmente presenti nel mosto. Al fine di valorizzazione ed aumentare la diffusione di pratiche enologiche basate su un ridotto …
Sustainable sparkling base wines obtained from waste matrices of the wine and honey supply chain
The present work was performed to improve the general quality characteristics of sparkling wines produced in Southern Italy (Sicily region) as well as the sustainability of the production process. To this purpose, two novel approaches were applied during experimental winemaking: (i), the use of raceme grapes (formed from the secondary shoots) of Grillo cultivar to improve the chemical characteristics of sparkling base wine; (ii), the technological selection of potential fructophilic Saccharomyces cerevisiae strains isolated from honey by-product to improve the alcoholic fermentations and the organoleptic features of bottled wines. The racemes are typical of Grillo cugrapes and mature 20 day…
Processi tradizionali e polifenoli naturali per formaggi innovativi e nutraceutici
l’aggiunta di composti antiossidanti naturali nei prodotti caseari ne aumenta il valore nutrizionale e il periodo di conservabilità
Evaluation of curd cooking on microbiological characteristics of “Grana” type pressed cheeses processed from raw ewes’ milk
This work was carried out to pursue a double objective: to improve the hygienic safety of cheeses produced from raw ewes’ milk; and to produce a new typology of cheese through the application of “Grana” technology. With this in mind, raw milk from an individual farm was transformed under controlled condition at a pilot dairy plant. The production technology included the partial skimming of the evening and morning milk mixture by cream surfacing, the addition of a natural whey starter cultures (NWSC) prepared with four selected Streptococcus thermophilus strains (PON6, PON244, PON261 e PON413) isolated from raw ewes’ cheese productions (Gaglio et al., 2014), milk clotting at 38°C, curd cooki…
Development of new dairy products using raw ewe’s milk to produce a “Swiss” type cheese
Evolution of lactic acid bacterial populations during lysine fortification of sourdough breads by addition of pistachio powder
Food fortification is a current practise to increase the bioavailability of certain nutrients. In this study, 5% (w/w) pistachio powder was added to tender wheat flour or durum wheat semolina to evaluate its contribution to augment the amount of lysine in bread. Bread production was carried out by sourdough technology using a selected 3-species lactic acid bacterial (LAB) starter culture (Lactobacillus sanfranciscensis PON100336, Leuconostoc citreum PON10079 and Weissella cibaria PON10030). In order to determine the influence of pistachio powder on the evolution of LAB, sourdough bread productions were compared with control trials obtained from flour or semolina and evaluated for the develo…
Chemical composition of essential oils from Pantelleria Island autochthonous and naturalized spices and evaluation of their individual and combined antimicrobial activities
In this study, the antimicrobial activity of the essential oils (EOs) from Origanum majorana L. and Rosmarinus officinalis L. growing in Pantelleria (Sicily, Italy) were tested alone and in combination against some prokaryotic and eukaryotic food-borne pathogens. The chemical composition of the EOs as well as the minimum inhibitory concentrations (MIC) against the most sensitive strains were also determined. Both EOs showed interesting antimicrobial effects against all bacteria and yeasts tested. MIC was in the range 1.25–2.50 µl/ml. Interestingly, O. majorana was particularly rich in thymol acetate, while carvacrol was present at very low percentages. Also R. officinalis EOs composition wa…
Biotecnologie applicate alla valorizzazione della “Pagnotta di Piana degli Albanesi”
Il presente articolo riassume il progetto di valorizzazione della Pagnotta di Piana degli Albanesi attraverso lo sviluppo di un impasto acido ottenuto da batteri lattici selezionati dalle materie prime, al fine di legare la produzione al territorio e permettere di recuperare le note di tipicità. Le farine e le semole rappresentano dei veri e propri habitat microbici, la cui composizione può variare in funzione dell’area geografica e delle condizioni di conservazione. Trattandosi di materie prime che non possono essere trattate termicamente prima della trasformazione, esse trasferiscono i loro microrganismi al prodotto in lavorazione. Pertanto, qualora tali microorganismi esprimano proprietà…